Sample records for xiphias gladius linnaeus

  1. Discrimination of prey species of juvenile swordfish Xiphias gladius (Linnaeus, 1758) using signature fatty acid analyses

    NASA Astrophysics Data System (ADS)

    Young, Jock W.; Guest, Michaela A.; Lansdell, Matt; Phleger, Charles F.; Nichols, Peter D.

    2010-07-01

    Signature lipid and fatty acid analysis were used to discriminate the diet of swordfish ( Xiphias gladius, orbital fork length: 60-203 cm) from waters off eastern Australia. The fatty acid (FA) composition of a range of known prey (squid, myctophids, and other fishes) of swordfish, taken from stomach samples and from net tows, was compared with that of the white muscle tissue (WMT) of swordfish from the same region. Swordfish muscle was lipid rich (average 24-42% dry weight), as was the skeleton (28-41%). The robustness of the approach was also tested by comparison against a key squid prey species that was collected and stored using different protocols: (i) fresh frozen, (ii) fresh frozen, then thawed, and (iii) stomach content collection. The FA profiles were generally similar, with the ratio of docosahexaenoic acid (DHA) and palmitic acid (16:0) in particular showing no significant difference. Major fatty acids in swordfish WMT were 18:1?9c, 16:0, 22:6?3, and 18:0. Multidimensional scaling showed that the swordfish WMT grouped closely with small fish prey including myctophids, and not with squid. Squid contained markedly higher 22:6?3 than swordfish. Individual prey species of the myctophidae could also be separated by the same technique. These results were supported by traditional stomach content analyses (SCA) that showed fish were the dominant prey for small swordfish sampled from southern waters whereas squid were the main prey in more northern waters, matching the FA patterns we found for the two regions. We propose that where general diet patterns are established, signature FA analysis has good potential to compliment or in some cases, replace temporal and spatial monitoring of trophic pathways for swordfish and other marine species.

  2. Genetic stock structure of the swordfish ( Xiphias gladius ?) inferred by PCR-RFLP analysis of the mitochondrial DNA control region

    Microsoft Academic Search

    S. Chow; H. Okamoto; Y. Uozumi; Y. Takeuchi; H. Takeyama

    1997-01-01

    Restriction fragment length polymorphism (RFLP) analysis was performed on PCR amplified DNA fragments containing the control\\u000a region of the swordfish (Xiphias gladius Linnaeus, 1758) mitochondrial DNA. A total of 456 individuals comprising 13 local samples (six Pacific, three Atlantic, the\\u000a Mediterranean Sea, two Indian Ocean and the Cape of Good Hope) were surveyed with four endonucleases (Alu I, Dde I,

  3. Bayesian Analyses of Genetic Variation and Population Differentiation in Pacific Swordfish (Xiphias gladius L.) and the Development of High Resolution Melting Assays for Species Identification and Potential Sex-Linked Marker Survey in Istiophorid Billfish 

    E-print Network

    Lu, Ching-Ping

    2014-08-06

    Swordfish (Xiphias gladius L.) and istiophorid billfish fisheries in all ocean basins are important commercially and recreationally. Proper assessments of these fisheries are hampered by species misidentification, unknown sex ratios, and unclarified...

  4. Multilocus Bayesian Estimates of Intra-Oceanic Genetic Differentiation, Connectivity, and Admixture in Atlantic Swordfish (Xiphias gladius L.)

    PubMed Central

    Smith, Brad L.; Lu, Ching-Ping; García-Cortés, Blanca; Viñas, Jordi; Yeh, Shean-Ya; Alvarado Bremer, Jaime R.

    2015-01-01

    Previous genetic studies of Atlantic swordfish (Xiphias gladius L.) revealed significant differentiation among Mediterranean, North Atlantic and South Atlantic populations using both mitochondrial and nuclear DNA data. However, limitations in geographic sampling coverage, and the use of single loci, precluded an accurate placement of boundaries and of estimates of admixture. In this study, we present multilocus analyses of 26 single nucleotide polymorphisms (SNPs) within 10 nuclear genes to estimate population differentiation and admixture based on the characterization of 774 individuals representing North Atlantic, South Atlantic, and Mediterranean swordfish populations. Pairwise FST values, AMOVA, PCoA, and Bayesian individual assignments support the differentiation of swordfish inhabiting these three basins, but not the current placement of the boundaries that separate them. Specifically, the range of the South Atlantic population extends beyond 5°N management boundary to 20°N-25°N from 45°W. Likewise the Mediterranean population extends beyond the current management boundary at the Strait of Gibraltar to approximately 10°W. Further, admixture zones, characterized by asymmetric contributions of adjacent populations within samples, are confined to the Northeast Atlantic. While South Atlantic and Mediterranean migrants were identified within these Northeast Atlantic admixture zones no North Atlantic migrants were identified respectively in these two neighboring basins. Owing to both, the characterization of larger number of loci and a more ample spatial sampling coverage, it was possible to provide a finer resolution of the boundaries separating Atlantic swordfish populations than previous studies. Finally, the patterns of population structure and admixture are discussed in the light of the reproductive biology, the known patterns of dispersal, and oceanographic features that may act as barriers to gene flow to Atlantic swordfish. PMID:26057382

  5. Shelf-life of chilled fresh Mediterranean swordfish (Xiphias gladius) stored under various packaging conditions: microbiological, biochemical and sensory attributes.

    PubMed

    Pantazi, D; Papavergou, A; Pournis, N; Kontominas, M G; Savvaidis, I N

    2008-02-01

    The present work evaluated the effect of air, vacuum and modified atmosphere packaging (MAP) on the shelf-life of chilled Mediterranean swordfish (Xiphias gladius). Fresh swordfish slices were stored in air, under vacuum and MAP (40%/30%/30%, CO(2)/N(2)/O(2)) under refrigeration (4 degrees C) for a period of 16 days. Of the three treatments used (vacuum, MAP and air), both MAP and vacuum packaging (VP) were the most effective for inhibiting growth of aerobic microflora in swordfish samples until days 9-10 of refrigerated storage. Of the microbial species determined, both Pseudomonas spp. and H(2)S-producing bacteria (including Shewanella putrefaciens) were dominant in swordfish samples stored in air, whereas growth of these species was partly inhibited under VP and MAP conditions. Lactic acid bacteria (LAB) and Enterobacteriaceae were also found to be members of the final swordfish microbial flora, irrespective of packaging conditions throughout the entire storage period. Of the chemical freshness indices determined, thiobarbituric acid (TBA) values were variable in swordfish samples, indicative of no specific oxidative rancidity trend. Trimethylamine nitrogen (TMA-N) values of swordfish samples stored in air, under VP and MAP exceeded the limit value of 5mgN/100g fish muscle after days 7, 8-9 and 11 days of storage, respectively. In a similar trend, total volatile basic nitrogen (TVB-N) for swordfish samples stored in air, under VP and MAP exceeded the limit value of 25mgN/100g fish muscle after 7-8, 10 and 12 days of storage, respectively. Sensory analyses (odor and taste attributes) indicated a shelf-life of ca. 7 days for air, 9 days for VP and 11-12 days for the MA-packaged swordfish samples. PMID:17993387

  6. Abstract--Lengths and ages of sword-fish (Xiphias gladius) estimated from

    E-print Network

    in diet, and in jaw and alimentary canal structure. The diet of swordfish larvae is limited. Larvae eat exclusively neustonic fish larvae. This diet indicates that young larvae enclosed basins such the range of these highly migratory as the Caribbean and Mediterranean fishes

  7. Determination of age and growth of swordfish, Xiphias gladius L., 1758,

    E-print Network

    . Because Ehrhardt (1992) reported that the von Bert- alanffy growth function did not ad- equately represent swordfish growth, we propose a second objec- tive, namely to compare the growth function proposed and Dean, 1983; Prince et aI., 1984; Hill et al., 1989) but sev- eral authors have pointed out that the use

  8. Linnaeus turns 300... Carl Linnaeus

    Microsoft Academic Search

    Hans Wohlmuth

    2007-01-01

    The article highlights the celebration of the 300th birthday of Carl Linnaeus, or Carl von Linne (as he is known in Scandinavi). Three centuries after his birth Linnaeus remains among the most famous and influential Swedes of all time, indeed his fame as a naturalist is eclipsed only by the great Charles Darwin (1809-1882).

  9. Assessing fishing policies for northeastern Brazil

    Microsoft Academic Search

    KÁTIA M. F. FREIRE; VILLY CHRISTENSEN; DANIEL PAULY

    2007-01-01

    This study is a first contribution towards the development of ecosystem-based fisheries management in northeastern Brazil, through the exploration of fishing policies based on a trophic model (Ecopath with Ecosim). Our simulations for 1978-2028 indicated that current fishing effort is completely unsustainable for lobsters (Panulirus argus (Latreille, 1804) and Panulirus laevicauda (Latreille, 1817)) and swordfish (Xiphias gladius Linnaeus, 1758). The

  10. Linnaeus in Uppsala, Sweden.

    ERIC Educational Resources Information Center

    Cohen, Paul; Cohen, Brenda

    1997-01-01

    Presents a brief life history of Carl Linnaeus, a professor of medicine and botany in Uppsala, Sweden. Highlights his work in developing a classification system for plants and animals, and his botanical lectures and demonstrations. (JRH)

  11. Hierarchical analyses of genetic variation of samples from breeding and feeding grounds confirm the genetic partitioning of northwest Atlantic and South Atlantic populations of swordfish ( Xiphias gladius L.)

    Microsoft Academic Search

    J. R. Alvarado Bremer; J. Mejuto; J. Gómez-Márquez; F. Boand; P. Carpintero; J. M. Rodríguez; J. Vinase; T. W. Greig; B. Ely

    2005-01-01

    In species with high migratory potential, the genetic signal revealing population differentiation is often obscured by population admixture. To our knowledge, the explicit comparison of genetic samples from known spawning and feeding areas has not been conducted for any highly migratory pelagic fish species. This study examines the geographic heterogeneity of swordfish mitochondrial DNA (mtDNA) lineages within the Atlantic Ocean

  12. Bayesian Analyses of Genetic Variation and Population Differentiation in Pacific Swordfish (Xiphias gladius L.) and the Development of High Resolution Melting Assays for Species Identification and Potential Sex-Linked Marker Survey in Istiophorid Billfish

    E-print Network

    Lu, Ching-Ping

    2014-08-06

    population structure. This dissertation focuses on: 1) genetic assays to identify Pacific billfishes, 2) the characterization of molecular markers potentially linked to gender determination in swordfish and billfishes, and 3) the characterization...

  13. Assessment of the Contemporary Population Structure and Admixture of Atlantic Swordfish (Xiphias gladius L.) via Mixed Stock Analysis and Bayesian Clustering of Multiple Nuclear SNPS Genotyped through High Resolution Melting 

    E-print Network

    Smith, Brad 1979-

    2012-11-28

    stocks, sampling coverage has not been uniform or representative of all areas and estimates of admixture in areas of contact have not been provided. In this study, we examined: 1) the applicability of high-resolution melting analysis (HRMA) in population...

  14. Assessment of the Contemporary Population Structure and Admixture of Atlantic Swordfish (Xiphias gladius L.) via Mixed Stock Analysis and Bayesian Clustering of Multiple Nuclear SNPS Genotyped through High Resolution Melting

    E-print Network

    Smith, Brad 1979-

    2012-11-28

    assignment. High resolution melting analysis (HRMA) is shown to be a highly sensitive, rapid, closed-tube genotyping method amenable to high throughput and, though until recently primarily confined to clinical studies, suitable for population studies in non...

  15. The Microscope of Linnaeus and His Blind Spot1

    Microsoft Academic Search

    Brian J. Ford

    Carl von Linné (Linnaeus) was the pioneering tax- onomist of the 18th century. His microscope survives along with the collections at his former residence in Sweden, though little has been known about it. The instrument is here described and its performance is demonstrated. Curiously, Linnaeus showed little in- terest in, or knowledge of, microscopic organisms. Very few of his drawings

  16. LINNAEUS: BOOSTING NEAR EARTH ASTEROID CHARACTERIZATION RATES

    NASA Astrophysics Data System (ADS)

    Elvis, Martin; Beeson, C.; Galache, J.; DeMeo, F.; Evans, I.; Evans, J.; Konidaris, N.; Najita, J.; Allen, L.; Christensen, E.; Spahr, T.

    2013-10-01

    Near Earth objects (NEOs) are being discovered at a rate of about 1000 per year, and this rate is set to double by 2015. However, the physical characterization of NEOs is only ~100 per year for each type of follow-up observation. We have proposed the LINNAEUS program to NASA to raise the characterization rate of NEOs to the rate of their discovery. This rate matching is necessary as any given NEO is only available for a relatively short time (days to weeks), and they are usually fainter on subsequent apparitions. Hence follow-up observations must be initiated rapidly, without time to cherry-pick the optimum objects. LINNAEUS concentrates on NEO composition. Optical spectra, preferably extending into the near-infrared, provide compositions that can distinguish major compositional classes of NEOs with reasonable confidence (Bus and Binzel 2002, DeMeo et al. 2009). Armed with a taxonomic type the albedo, pV, of an NEO is better constrained, leading to more accurate sizes and masses. Time-resolved spectroscopy can give indications of period, axial ratio and surface homogeneity. A reasonable program of spectroscopy could keep pace with the NEO discovery rate. A ground-based telescope can observe faint NEOs about 210 nights a year, due to time lost due to weather, bright time, and equipment downtime (e.g. Gemini), for a total of ~2000 hours/year. At 1 hour per NEO spectrum, a well-run, dedicated, telescope could obtain almost 2000 spectra per year, about the rate required. If near-IR spectra are required then a 4 m or larger telescope is necessary to reach 20. However, if the Bus-Binzel taxomonmy suffices then only optical spectra are needed and a 2 meter class telescope is sufficient. LINNAEUS would use 50% of the KPNO 2.1 m telescope with an IFU spectrometer, the SED-machine (Ben-Ami et al. 2013), to obtain time-resolved optical spectra of 1200-2000 NEOs/year, or 4200-7000 in 3.5 years observing in an NEOO program. Robust pipeline analysis will release taxonomic types via the Minor Planet Center within 24 hours and a full archive of spectra and products will be provided.

  17. LINNAEUS: A species name identification system for biomedical literature

    PubMed Central

    2010-01-01

    Background The task of recognizing and identifying species names in biomedical literature has recently been regarded as critical for a number of applications in text and data mining, including gene name recognition, species-specific document retrieval, and semantic enrichment of biomedical articles. Results In this paper we describe an open-source species name recognition and normalization software system, LINNAEUS, and evaluate its performance relative to several automatically generated biomedical corpora, as well as a novel corpus of full-text documents manually annotated for species mentions. LINNAEUS uses a dictionary-based approach (implemented as an efficient deterministic finite-state automaton) to identify species names and a set of heuristics to resolve ambiguous mentions. When compared against our manually annotated corpus, LINNAEUS performs with 94% recall and 97% precision at the mention level, and 98% recall and 90% precision at the document level. Our system successfully solves the problem of disambiguating uncertain species mentions, with 97% of all mentions in PubMed Central full-text documents resolved to unambiguous NCBI taxonomy identifiers. Conclusions LINNAEUS is an open source, stand-alone software system capable of recognizing and normalizing species name mentions with speed and accuracy, and can therefore be integrated into a range of bioinformatics and text-mining applications. The software and manually annotated corpus can be downloaded freely at http://linnaeus.sourceforge.net/. PMID:20149233

  18. Systems and How Linnaeus Looked at Them in Retrospect

    PubMed Central

    Müller-Wille, S.

    2013-01-01

    Summary A famous debate between John Ray, Joseph Pitton de Tournefort and Augustus Quirinus Rivinus at the end of the seventeenth century has often been referred to as signalling the beginning of a rift between classificatory methods relying on logical division and classificatory methods relying on empirical grouping. Interestingly, a couple of decades later, Linnaeus showed very little excitement in reviewing this debate, and this although he was the first to introduce the terminological distinction of artificial vs. natural methods. In this paper, I will explain Linnaeus's indifference by the fact that earlier debates were revolving around problems of plant diagnosis rather than classification. From Linnaeus's perspective, they were therefore concerned with what he called artificial methods alone – diagnostic tools, that is, which were artificial no matter which characters were taken into account. The natural method Linnaeus proposed, on the other hand, was not about diagnosis, but about relations of equivalence which played a vital, although largely implicit role in the practices of specimen exchange on which naturalists relied to acquire knowledge of the natural world.

  19. Linnaeus' herbarium cabinet: a piece of furniture and its function

    E-print Network

    the foun- dations of modern taxonomy through the invention of binominal nomenclature. However, another plant and 4378 animal species that Linnaeus identified and named in his Species Plantarum and Systema. Each species is defined by reference to a single specimen, the so-called `holotype', which

  20. Antioxidative activity of polysaccharide fractions isolated from Lycium barbarum Linnaeus

    Microsoft Academic Search

    C. L. Lin; C. C. Wang; S. C. Chang; B. Stephen Inbaraj; B. H. Chen

    2009-01-01

    Antioxidant activity of polysaccharide fractions isolated from Lycium barbarum Linnaeus was evaluated. Polysaccharides were extracted with boiling water, followed by precipitating with ethanol, protein hydrolysis, dialysis, and fractionation with a DEAE–Sepharose CL-6B column. A total of 4 fractions, including 1 neutral polysaccharide (LBPN) and 3 acidic polysaccharides were obtained, and compared with crude polysaccharide (CP), crude extract of polysaccharide (CE),

  1. Solid state characterization of ?-chitin from Vanessa cardui Linnaeus wings

    Microsoft Academic Search

    Jessica D. Schiffman; Caroline L. Schauer

    2009-01-01

    Material properties of the painted lady butterfly, Vanessa cardui Linnaeus were investigated using typical material science techniques. The examined butterflies were raised and hatched from the larvae stage and their chemical and crystalline structure evaluated and compared to that of crab shell (?-chitin) and squid pens from Notodarus sloanii and Loligo pealei (?-chitin). Fourier transmission infrared spectroscopy (FTIR) and X-ray

  2. Functional genomics of the horn fly, Haematobia irritans (Linnaeus, 1758)

    Microsoft Academic Search

    Lorena Torres; Consuelo Almazán; Nieves Ayllón; Ruth C Galindo; Rodrigo Rosario-Cruz; Héctor Quiroz-Romero; José de la Fuente

    2011-01-01

    BACKGROUND: The horn fly, Haematobia irritans (Linnaeus, 1758) (Diptera: Muscidae) is one of the most important ectoparasites of pastured cattle. Horn flies infestations reduce cattle weight gain and milk production. Additionally, horn flies are mechanical vectors of different pathogens that cause disease in cattle. The aim of this study was to conduct a functional genomics study in female horn flies

  3. Chromatographic determination of polysaccharides in Lycium barbarum Linnaeus

    Microsoft Academic Search

    Chia Chi Wang; Shyh Chung Chang; Bing Huei Chen

    2009-01-01

    Polysaccharides in Lycium barbarum Linnaeus have been shown to be effective in preventing cancer. The objectives of this study were to develop an appropriate method for molecular weight determination of polysaccharides in L. barbarum. The most suitable analytical condition was: a volume-ratio of L. barbarum sample to deionized water at 1:10, followed by shaking in a 100°C water bath for

  4. Zur Morphologie des Zentralnervensystems von Erethizon dorsatum , Linnaeus (Rodentia, Hystricomorpha)

    Microsoft Academic Search

    G. Pilleri

    1960-01-01

    Das Gehirn von Erethizon dorsatum (E. dorsatum dorsatum, Linnaeus 1758) wird beschrieben. Es ergibt sich bei der Analyse von 6 Gehirnen aus der gleichen Subspecies eine starke Variabilität in der Form der Hemisphären. Der Quotient Hypothalamuslänge: Großhirnlänge schwankt zwischen 0,21 und 0,29 mit einem Durchschnittswert von 0,25 Für Hystrix cristata, hodgsoni und javanicus wurde ein Wert von 0,26 errechnet. Der

  5. Human Lice: Body Louse, Pediculus humanus humanus Linnaeus and Head Louse, Pediculus humanus capitis De

    E-print Network

    Florida, University of

    EENY-104 Human Lice: Body Louse, Pediculus humanus humanus Linnaeus and Head Louse, Pediculus humans: the body louse, Pediculus humanus humanus Linnaeus, also known as Pediculus humanus corporis than body lice. Head lice and pubic lice are highly dependent upon human body warmth and will die

  6. LINNAEUS: Boosting near-Earth asteroid characterization rates

    NASA Astrophysics Data System (ADS)

    Elvis, M.; Allen, L.; Christensen, E.; DeMeo, F.; Evans, I.; DePonte Evans, J.; Galache, J.; Konidaris, N.; Najita, J.; Spahr, T.

    2014-07-01

    Without knowing the size and composition of Near-Earth asteroids (NEAs) it is hard to assess their threat or their promise as either Earth-impactors or targets for exploration, retrieval or resources. The factor of about 10 uncertainty in albedo that exists with only an optical H magnitude in hand leads to a factor 30 uncertainty in volume and more in mass. A simple classification into carbonaceous, stony or metallic limits the albedo range to a factor about 2, the volume to a factor of about 2.5 and mass to about 5 (Mainzer et al. 2011, Thomas et al. 2011). NEAs are being discovered at a rate of about 1000/year, and this rate will soon increase by a factor of several with upgrades to the Catalina Sky Survey and the greater use of Pan-STARRS-1 for NEA work from 2014 onwards. However, NEA characterization is falling well behind discovery, forming a bottleneck for programs. The largest program of 0.8-2.5 micron near-IR spectroscopy, the MIT-IRTF program, obtains about 100 NEA spectra/year, for an accumulated total of about 1000 spectra (mostly at H < 15, R.P. Binzel, priv.comm.). At current rates it will take 100 years to obtain compositions, sizes, and shapes of the roughly 20,000 H<22 NEAs. Moreover, NEAs fade quickly after discovery and are mostly much fainter on a subsequent apparition, so that rapid follow-up at discovery is essential (Beeson et al. 2014, see also Galache et al., this meeting). LINNAEUS is the program we have proposed in response to this need. Optical spectroscopy is sufficient to accomplish C/S/X classification and is much more sensitive than near-infrared spectroscopy. LINNAEUS combines 50% of the observing time on the Kitt Peak 2.1 meter telescope with an optimized low-resolution 0.4-0.9 micron optical spectrograph, the SED Machine (Ben-Mazi et al. 2013), to obtain 1200-2000 NEO spectra per year for a total of 4200 - 7000 spectra in 3.5 years of observing. LINNAEUS would provide an order of magnitude increase over current rates, keeping characterization up to the pace of expected discoveries. For a 20% extra investment LINNAEUS could use 100% of the Kitt Peak 2.1 meter, roughly doubling the number of NEAs with spectra.

  7. The phylum Cnidaria: A review of phylogenetic patterns and diversity 300 years after Linnaeus

    E-print Network

    Daly, Marymegan; Brugler, Mercer R.; Cartwright, Paulyn; Collins, Allen G.; Dawson, Michael N.; Fautin, Daphne G.; France, Scott C.; McFadden, Catherine; Opresko, Dennis M.; Rodriguez, Estefania; Romano, Sandra L.; Stake, Joel L.

    2007-12-21

    Systema Naturae includes representatives of every major lineage of the animal phylum Cnidaria. However, Linnaeus did not classify the members of the phylum as is now done, and the diversity of the group is not well ...

  8. ESPÉCIES DO GÊNERO Eimeria (APICOMPLEXA: EIMERIIDAE) EM TAMANDUÁS-BANDEIRA (Myrmecophaga tridactyla LINNAEUS, 1758) EM CATIVEIRO

    Microsoft Academic Search

    FAGNER LUIZ DA C. FREITAS; ANDRÉ S. ZANETTI; CÉLIO R. MACHADO; ROSANGELA Z. MACHADO

    1 ABSTRACT:- FREITAS, F.L. DA C.; ALMEIDA, K. DE S.; ZANETTI, A.S.; NASCIMENTO, A.A. DO; MACHADO, C. R.; MACHADO, R.Z. (Species of the genus Eimeria (Apicomplexa: Eimeriidae) in giant anteaters (Myrmecophaga tridactyla Linnaeus, 1758) in captivity). Espécies do gênero Eimeria (Apicomplexa: Eimeriidae) em Tamanduás-bandeira (Myrmecophaga tridactyla Linnaeus, 1758) em cativeiro. Revista Brasileira de Parasitologia Veterinária, v. 15, n. 1, p.

  9. The Resurgence of the U.S. Swordfish Market DOUGLAS W. LIPTON

    E-print Network

    by consumers because of mercury contamination, the sword- fish, Xiphias gladius, is today making a comeback. As fears about contamina- tion have waned and the trend toward more "upscale" seafood products has grown the discovery of mercury contamination affected the swordfish market, historical trends are examined from 1965

  10. Relative Abundance and Fishery Potential of Pelagic Sharks Along Florida's East Coast

    E-print Network

    Relative Abundance and Fishery Potential of Pelagic Sharks Along Florida's East Coast STEVEN A. BERKELEY AND WILFREDa L. CAMPOS Introduction Relative abundance and fishery poten tial of pelagic sharks were investigated by sampling the shark by-catch aboard commercial swordfish, Xiphias gladius, longline

  11. The distribution and abundance of threatened and endangered species

    E-print Network

    200 The distribution and abundance of threatened and endangered species of sea turtles in offshore, Xiphias gladius, incidentally cap- tures threatened and endangered sea turtles, which have either in form in 1992. Only sets targeting tuna or swordfish, or both, are analyzed here because the shark

  12. Mercury content in commercial pelagic fish and its risk assessment in the Western Indian

    E-print Network

    Paris-Sud XI, Université de

    Rochelle, France dIRD, 97 715 Saint-Denis de La R´eunion, France Abstract As top predators of pelagic food webs, large fish naturally bioaccumulate mercury (Hg). Determining Hg burdens in commercialized fish (Xiphias gladius) caught in waters surrounding Reunion Island (3.97 ± 2.67 µg.g-1 dry weight). Following

  13. Nymphal Growth, Life Cycle, and Feeding Habits of Potamanthus luteus (Linnaeus, 1767) (Insecta: Ephemeroptera) in the Bormida River, Northwestern Italy

    Microsoft Academic Search

    Stefano Fenoglio; Tiziano Bo; José Manuel Tierno de Figueroa; Marco Cucco

    Stefano Fenoglio, Tiziano Bo, José Manuel Tierno de Figueroa, and Marco Cucco (2008) Nymphal growth, life cycle, and feeding habits of Potamanthus luteus (Linnaeus, 1767) (Insecta: Ephemeroptera) in the Bormida River, northwestern Italy. Zoological Studies 47(2): 185-190. Potamanthus luteus (Linnaeus, 1767), the only representative of the family Potamanthidae in Europe, exhibits explosive growth in terms of its numerical presence and

  14. A STUDY OF THE REPRODUCTIVE ORGAN'S OF THE COMMON MARINE SHRIMP, PENAEUS SETIFERUS (LINNAEUS)

    Microsoft Academic Search

    JOSEPH E. KING

    In connection with the investigations of the common commercial shrimp, Penaeus setiferus (Linnaeus) , carried on by the U. S. Fish and Wildlife Service, studies have been made of the structure of the reproductive organs and accessory sex characters and the general nature of the reproductive process. This report gives information on the anatomy and histology of the male and

  15. Severe neurotoxic envenoming by the Malayan krait Bungarus candidus (Linnaeus): response to antivenom and anticholinesterase

    Microsoft Academic Search

    D A Warrell; S Looareesuwan; N J White; R D Theakston; M J Warrell; W Kosakarn; H A Reid

    1983-01-01

    Five patients were bitten by the Malayan krait Bungarus candidus (Linnaeus) in eastern Thailand or north western Malaya. Two patients were not envenomed but the other three developed generalised paralysis which progressed to respiratory paralysis in two cases, one of which ended fatally. One patient showed parasympathetic abnormalities. Anticholinesterase produced a dramatic improvement in one patient. Another patient probably benefited

  16. A field experiment on the selection of basking sites by Emys orbicularis (LINNAEUS, 1758)

    Microsoft Academic Search

    MASSIMO CAPULA; LUCA LUISELLI; LORENZO RUGIERO; ERNESTO FILIPPI

    The European Pond Terrapin, Emys orbicularis (LINNAEUS, 17S8), is a semi-aquatic emydid that spends a considerable part of its time basking. Pond terrapins usually bask on the banks of water bodies or on small 'islets' like large stones, tree trunks etc., emerging from the water. We tested whether a certain type of basking site (bank or 'islet') is preferred significantly

  17. Cryopreservation of lumpfish Cyclopterus lumpus (Linnaeus, 1758) milt

    PubMed Central

    Johannesen, Asa; Arge, Regin

    2015-01-01

    This study has established a successful protocol to cryopreserve lumpfish Cyclopterus lumpus (Linnaeus, 1758) milt. Three cryosolutions were tested based on Mounib’s medium; the original medium including reduced l-glutathione (GSH), the basic sucrose and potassium bicarbonate medium without GSH, or with hen’s egg yolk (EY). Dimethyl sulphoxide (DMSO) was used as the cryoprotectant along with all three diluents in a 1–2 dilution. Cryopreservation was performed with the mentioned cryosolutions at two freezing rates. Motility percentages of spermatozoa were evaluated using ImageJ with a computer assisted sperm analyzer (CASA) plug-in. Findings revealed that spermatozoa cryopreserved in Mounib’s medium without GSH had a post-thaw motility score of 6.4 percentage points (pp) higher than those in the original Mounib’s medium, and an addition of EY to the modified Mounib’s medium lowered the post-thaw motility score by 19.3 pp. The difference in motility between both freezing rates was 13.0 pp, and samples cryopreserved on a 4.8 cm high tray resulted in a better post-thaw motility score. On average, cryopreserved milt had a 24.1 pp lower post-thaw motility score than fresh milt. There was no significant difference in fertilisation success between cryopreserved and fresh milt. Cryopreservation of lumpfish milt has, to our knowledge, never been successfully carried out before. The established protocol will be a main contributing factor in a stable production of lumpfish juveniles in future.

  18. INTRODUCED LEAF BEETLES OF THE MARITIME PROVINCES, 6: THE COMMON ASPARAGUS BEETLE,CRIOCERIS ASPARAGI(LINNAEUS), AND THE TWELVE-SPOTTED ASPARAGUS BEETLE,CRIOCERIS DUODECIMPUNCTATA(LINNAEUS) (COLEOPTERA: CHRYSOMELIDAE)

    Microsoft Academic Search

    K. W. Neatby

    The common asparagus beetle,Crioceris asparagi(Linnaeus) and the twelve-spotted asparagus beetle,Crioceris duodecimpunctata(Linnaeus) are intro- duced Palearctic leaf beetles that feed exclusively on asparagus. The introduction history of these species in North America is reviewed and their dispersal to and distribution in the Maritime Provinces of Canada are described. Both species were first reported in Canada in 1899 in asparagus production areas

  19. Karyological studies in ten species of Citrus(Linnaeus, 1753) (Rutaceae) of North-East India

    PubMed Central

    Hynniewta, Marlykynti; Malik, Surendra Kumar; Rao, Satyawada Rama

    2011-01-01

    Abstract Ten Citrus (Linnaeus, 1753) species of North-East India have been karyo-morphologically analysed. All studied species had 2n=18 chromosomes without any evidence of numerical variation. All the chromosomes were found to be of metacentric and sub-metacentric in all the species; the morphology of the chromosomes showing size difference only. Symmetrical karyotype which does not have much difference in the ratio of longest to shortest chromosome in all the species was observed. Three species, Citrus grandis (Osbeck, 1757), Citrus reticulata (Blanco, 1837) and Citrus medica (Linnaeus, 1753) are identified as true basic species from asymmetry studies of karyotypes as they reflect on the primitive nature of their genomes. Citrus indica (Tanaka, 1937)occupies a special taxonomic position within the genus Citrus as a progenitor for other cultivated species. PMID:24260635

  20. Extract of Meretrix meretrix Linnaeus induces angiogenesis in vitro and activates endothelial nitric oxide synthase

    NASA Astrophysics Data System (ADS)

    Liu, Ming; Wei, Jianteng; Wang, Hui; Ding, Lili; Zhang, Yuyan; Lin, Xiukun

    2012-09-01

    Meretrix meretrix Linnaeus has long been used as traditional Chinese medicine in oriental medicine. The angiogentic activity of the extract of M. meretrix was investigated in this study, using human umbilical vein endothelial cells (HUVECs). Extract of M. meretrix Linnaeus (AFG-25) was prepared with acetone and ethanol precipitation, and further separated by Sephadex G-25 column. The results show that AFG-25 promoted proliferation, migration, and capillary-like tube formation in HUVECs, and in the presence of eNOS inhibitor NMA, the tube formation induced by AFG-25 is inhibited significantly. Moreover, AFG-25 could also promote the activation of endothelial nitric oxide synthase (eNOS) and the resultant elevation of nitric oxide (NO) production. The results suggested that M. meretrix contains active ingredients with angiogentic activity and eNOS/NO signal pathway is in part involved in the proangiogenesis effect induced by AFG-25.

  1. Severe neurotoxic envenoming by the Malayan krait Bungarus candidus (Linnaeus): response to antivenom and anticholinesterase.

    PubMed Central

    Warrell, D A; Looareesuwan, S; White, N J; Theakston, R D; Warrell, M J; Kosakarn, W; Reid, H A

    1983-01-01

    Five patients were bitten by the Malayan krait Bungarus candidus (Linnaeus) in eastern Thailand or north western Malaya. Two patients were not envenomed but the other three developed generalised paralysis which progressed to respiratory paralysis in two cases, one of which ended fatally. One patient showed parasympathetic abnormalities. Anticholinesterase produced a dramatic improvement in one patient. Another patient probably benefited from paraspecific antivenom. The efficacy of antivenoms and adjuvants such as anticholinesterases in patients with neurotoxic envenoming requires further study. PMID:6402200

  2. Severe neurotoxic envenoming by the Malayan krait Bungarus candidus (Linnaeus): response to antivenom and anticholinesterase.

    PubMed

    Warrell, D A; Looareesuwan, S; White, N J; Theakston, R D; Warrell, M J; Kosakarn, W; Reid, H A

    1983-02-26

    Five patients were bitten by the Malayan krait Bungarus candidus (Linnaeus) in eastern Thailand or north western Malaya. Two patients were not envenomed but the other three developed generalised paralysis which progressed to respiratory paralysis in two cases, one of which ended fatally. One patient showed parasympathetic abnormalities. Anticholinesterase produced a dramatic improvement in one patient. Another patient probably benefited from paraspecific antivenom. The efficacy of antivenoms and adjuvants such as anticholinesterases in patients with neurotoxic envenoming requires further study. PMID:6402200

  3. Social recognition using chemical cues in cuttlefish ( Sepia officinalis Linnaeus, 1758)

    Microsoft Academic Search

    J. G. Boal; S. E. Marsh

    1998-01-01

    Forty-five full-sized, virgin cuttlefish (Sepia officinalis Linnaeus) were tested for social discriminations on the basis of chemical cues alone. Subjects were tested by placing them in the base of a Y-maze and permitting them to choose between the two arms of the maze, each arm with a different water supply. Each subject was tested three times: once with water from

  4. Effect of meal size on postprandial metabolic response in Chinese catfish ( Silurus asotus Linnaeus)

    Microsoft Academic Search

    Shi-Jian Fu; Zhen-Dong Cao; Jiang-Lan Peng

    2006-01-01

    The effect of relative meal size (0.5–24% body mass) on specific dynamic action (SDA) was assessed in Chinese catfish (Silurus asotus Linnaeus) (30.90±1.30 g) at 25.0°C; the cutlets of freshly killed loach without viscera, head and tail were used as a test meal. There was no significant difference in either SDA duration or peak oxygen consumption (VO2) among low meal size

  5. Foraging ecology of Cookiecutter Sharks ( Isistius brasiliensis ) on pelagic fishes in Hawaii, inferred from prey bite wounds

    Microsoft Academic Search

    Yannis P. Papastamatiou; Brad M. Wetherbee; John O’Sullivan; Gwen D. Goodmanlowe; Christopher G. Lowe

    2010-01-01

    The Cookiecutter Shark (Isistius brasiliensis) is an ecto-parasitic predator of numerous large pelagic fish and mammals. However, little is known of its foraging ecology\\u000a due to its elusive foraging tactics in the pelagic environment. We used bite scar patterns on pelagic fishes landed at the\\u000a Honolulu Fish Auction to assess some of the Cookiecutter Shark foraging habits. Swordfish (Xiphias gladius)

  6. Decreases in Shark Catches and Mortality in the Hawaii-Based Longline Fishery as Documented by Fishery Observers

    Microsoft Academic Search

    William A. Walsh; Keith A. Bigelow; Karen L. Sender

    2009-01-01

    This article summarizes catch data for sharks collected by fishery observers during two periods (1995–2000 and 2004–2006) in the Hawaii-based pelagic longline fishery, which targets swordfish Xiphias gladius in the shallow-set sector and bigeye tuna Thunnus obesus in the deep-set sector. The blue shark Prionace glauca was the predominant shark species caught throughout the study period (84.5% of all sharks).

  7. An up-date of Verster's (1969) `Taxonomic revision of the genus Taenia Linnaeus' (Cestoda) in table format

    Microsoft Academic Search

    Brigitte Loos-Frank

    2000-01-01

    The paper `A taxonomic revision of the genus Taenia Linnaeus, 1758 s. str.' (Verster, 1969) gives concise characterisations, together with drawings of rostellar hooks and the terminal genital organs, of the 32 Taenia species and three subspecies which this author found to be valid. Yet, it is hardly possible to quickly identify a questionable species or to readily access information on their

  8. Patterns of immune response to environmental bacteria in natural populations of the red drum, Sciaenops ocellatus (Linnaeus)

    Microsoft Academic Search

    Mark R. Evans; Sara-Jane Larsen; George H. M. Riekerk; Karen G. Burnett

    1997-01-01

    The mechanisms by which natural populations of teleost fish resist infection in spite of the wide variety of microorganisms in their environment are poorly understood. To begin evaluating the relevance of an intact immune system to natural populations of a marine teleost, we monitored age and seasonal patterns of serum antibody responses of feral red drum (Sciaenops ocellatus, (Linnaeus)) against

  9. 1. ORIENTAL COCKROACH, Blatta orientalis Linnaeus. Pictured (l. to r.) are a female, male, nymph, and egg capsule. The oriental

    E-print Network

    Ginzel, Matthew

    1. ORIENTAL COCKROACH, Blatta orientalis Linnaeus. Pictured (l. to r.) are a female, male, nymph, and egg capsule. The oriental cockroach prefers dampness and is sometimes called a "water bug). Pictured (l. to r.) are a female, male, nymph, and egg capsule. The American cockroach is large -- up to 1

  10. Induction of metamorphosis in queen conch, Strombus gigas Linnaeus, larvae by cues associated with red algae from their nursery grounds

    Microsoft Academic Search

    Anne A. Boettcher; Nancy M. Targett

    1996-01-01

    Strombus gigas Linnaeus larvae are induced to metamorphose by a selection of substrata from their nursery grounds. The most effective inducers are cues associated with red algae, specifically Laurencia poitei (Lamouroux) Howe and the epiphyte Fosliella sp. (Foslie) found on Thalassia testudinum Köenig detritus. Larvae metamorphose in response to these intact rhodophytes and to aqueous extracts of these species. The

  11. Role of Chemical Inducers in Larval Metamorphosis of Queen Conch, Strombus gigas Linnaeus: Relationship to Other Marine Invertebrate Systems

    Microsoft Academic Search

    ANNE A. BOETTCHER; NANCY M. TARGETT

    Chemical cues are important in the exoge- nous and endogenous control of metamorphosis in many marine invertebrate larvae. In the queen conch, Strombus gigas Linnaeus, larval metamorphosis is induced by low molecular weight compounds associated with dominant species of red algae found in conch nursery grounds; these species include the foliose rhodophyte Laurencia poitei (Lamouroux). The responses of conch larvae

  12. Consumption and gastric evacuation in juvenile red drum Sciaenops ocellatus (Linnaeus): Estimation of prey type effects and validation of field-based

    E-print Network

    Scharf, Fred

    Consumption and gastric evacuation in juvenile red drum Sciaenops ocellatus (Linnaeus): Estimation xxxx Keywords: Evacuation model Gross growth efficiency Maximum consumption The red drum Sciaenops species of commercial and recreational value. Recovering red drum stocks highlight the need

  13. Description and evaluation of imposex in Strombus canarium Linnaeus, 1758 (Gastropoda, Strombidae): a potential bio-indicator of tributyltin pollution

    Microsoft Academic Search

    Zaidi Che Cob; Aziz Arshad; Japar Sidik Bujang; Mazlan Abd. Ghaffar

    2011-01-01

    Strombus canarium Linnaeus, 1758 is an important gastropod species within the study area and was traditionally collected for food by the locals.\\u000a The objective of the present study is to assess the incidence of imposex and its severity in this species. Adult conchs were\\u000a sampled during their main reproductive period, from October 2005 to January 2006, at Sungai Pulai estuary,

  14. Simultaneous determination of phenolic acids and flavonoids in Lycium barbarum Linnaeus by HPLC–DAD–ESI-MS

    Microsoft Academic Search

    B. Stephen Inbaraj; H. Lu; T. H. Kao; B. H. Chen

    2010-01-01

    A high-performance liquid chromatography–diode array detection–mass spectrometry method with electrospray ionization mode (HPLC–DAD–ESI-MS) was developed for simultaneous determination of phenolic acids and flavonoids in fruits of Lycium barbarum Linnaeus, a widely used traditional Chinese herb possessing vital biological activity. Both phenolic acids and flavonoids were extracted with 50% ethanol and purified using a polymeric solid phase extraction cartridge followed by

  15. Determination of carotenoids and their esters in fruits of Lycium barbarum Linnaeus by HPLC–DAD–APCI–MS

    Microsoft Academic Search

    B. Stephen Inbaraj; H. Lua; C. F. Hung; W. B. Wu; C. L. Lin; B. H. Chen

    2008-01-01

    The fruit of Lycium barbarum Linnaeus, a traditional Chinese herb containing functional components such as carotenoids, flavonoids and polysaccharides, has been widely used in the health food industry because of its possible role in the prevention of chronic disease like age-related macular degeneration. The objectives of this study were to develop a high performance liquid chromatography–photo diode array detection–mass spectrometry

  16. Characterization of polymorphic microsatellites for the periwinkle gastropod, Littorina littorea (Linnaeus, 1758) and their cross-amplification in four congeners

    Microsoft Academic Search

    Caitríona E. McInerney; A. Louise Allcock; Mark P. Johnson; Paulo A. Prodöhl

    2009-01-01

    Eight polymorphic microsatellite loci are described for Littorina littorea (Linnaeus, 1758). Data on allelic variation in Irish and Celtic Sea samples are reported. The average number of alleles per\\u000a locus was 11 (range 4–29), and observed and expected heterozygosities ranged from 6.9 to 84.3% and from 9.4 to 95.2%, respectively.\\u000a Loci did not deviate from Hardy–Weinberg equilibrium and no linkage

  17. ON THE BIOLOGY AND BASIC CHARACTERISTICS OF THE POPULATION DYNAMIC OF THE DOG CONCH, STROMBUS CANARIUM LINNAEUS, 1758 (STROMBIDAE)

    Microsoft Academic Search

    Zaidi Che Cob; Aziz Arshad; Japar Sidik Bujang

    Abstrak: Strombus canarium Linnaeus, 1758 merupakan antara sumber perikanan gastropoda paling utama di perairan Selat Johor, Malaysia. Dalam kajian ini, persampelan dilakukan secara rawak menggunakan kaedah jalur transek, bermula dari Januari hingga Disember 2005. Data panjang cangkerang dibahagikan mengikut jantina dan panjang, dengan sela-kelas 2 mm. Secara keseluruhannya, nisbah jantan kepada betina adalah pada kadar 1:1.73, yang tidak berbeza secara

  18. Metacercariae of Clinostomum schizothoraxi Kaw, 1950 (Digenea: Clinostomatidae) in Carassius carassius (Linnaeus) under different environmental conditions.

    PubMed

    Shah, Humaira Bashir; Yousuf, Abdul R; Chishti, Mohammad Z; Ahmad, Fayaz

    2013-05-01

    This report addresses the possible impacts of local habitat characteristics on the metacercariae of Clinostomum schizothoraxi Kaw, 1950 infecting crucian carp, Carassius carassius (Linnaeus), from three lakes in Kashmir. The lakes chosen encompass an extremely wide gradient in trophic status--Manasbal (less polluted and mesotrophic), Dal (moderately polluted and eutrophic) and Anchar (strongly polluted and hypertrophic). The results indicate that infrapopulation-level descriptors of abundance of C. schizothoraxi in fish differed between the three lakes and revealed that the infection levels were greater at Anchar Lake. Furthermore, the prevalence, mean abundance and mean intensity of infection also changed during the period of investigation along the seasonal gradient of water temperature. The fact that the abundance patterns of the parasite differed in different populations of the same host provided a unique opportunity for a comparative study on the temporal variations in infection patterns attained during different seasons. In particular, the lake environments showed a high degree of variability in the density profiles of mollusc intermediate hosts and, thus, the differences in the infection status of crucian carp were derived on the basis of intermediate host population size which, in turn, was influenced by the trophic characteristics of the three lakes. PMID:23724736

  19. Antitumor effects of a polypeptide isolated from Tegillarca granosa linnaeus and the related molecular mechanism.

    PubMed

    Xu, Wenhua; Chang, Zhishang; Liu, Xiaoyan; Jiang, Changqing; Wang, Chunbo; Xu, Luo

    2014-05-01

    This study is to investigate the anticancer effects and mechanisms of Tegillarca granosa Linnaeus-1 (TG-1) on renal carcinoma OS-RC-2 cells in vitro. The proliferation of OS-RC-2 cells was evaluated under various concentrations of TG-1 using MTT assay. The apoptosis of OS-RC-2 cells was analyzed using acridine orange/ethidium bromide staining. And the cell cycle distribution of OS-RC-2 cells was detected by flow cytometry. In addition, the expression level of Ki67 mRNA was examined by RT-PCR and level of casepase-3 was examined by Western blot analysis. TG-1 incubation significantly inhibited the proliferation of renal carcinoma OS-RC-2 cells and arrested cells at G0/G1 phase (P <0.05). And TG-1 also significantly inhibited the expression of Ki67 mRNA (P<0.05). Additionally, TG-1 significantly promoted apoptosis and the expression of caspase-3 in cells (P<0.05). Moreover, the optimal effects of TG-1 was achieved at the concentration of 100 mg/L The results indicate that TG-1 has antitumor effects on renal carcinoma OS-RC-2 cells and that the underlying mechanisms may be acted through inhibiting proliferation and Ki67 mRNA expression, and promoting apoptosis and caspase-3 expression. PMID:24811818

  20. First data on trace elements in Haliotis tuberculata (Linnaeus, 1758) from southern Italy: Safety issues.

    PubMed

    Conte, Francesca; Copat, Chiara; Longo, Sabrina; Oliveri Conti, Gea; Grasso, Alfina; Arena, Giovanni; Brundo, Maria Violetta; Ferrante, Margherita

    2015-07-01

    This study evaluated for the first time the concentrations of 10 metals in wild specimens of abalone, Haliotis tuberculata (Ht) (Linnaeus, 1758) from three sites along the southern Italian coast: Gulf of Catania (CT), the Northern Coast of Messina (ME) and the harbor of Villa San Giovanni (VSG). The species is commonly found in the area and has significant commercial value. Additionally, it is long lived, thus suitable as bioindicator of the environmental monitoring. The potential human health risks due to consumption of Ht have been assessed by estimated average daily intake (EDI) and target hazard quotient (THQ) of metals, respectively. In particular arsenic (As), cadmium (Cd), copper (Cu), chromium (Cr), iron (Fe), lead (Pb), manganese (Mn), mercury (Hg), selenium (Se) and vanadium (V) were quantified in the edible tissue of specimens by acid digestion of the samples and ICP-MS determination. The highest concentrations were found in CT sample area for most metals analyzed. Mean values for Pb, Cd and Hg were lower than the maximum levels (MLs) set for bivalve mollusks by Regulation (CE) no. 1881/2006 in all sites, and average intake values below the risk levels for human consumption. PMID:25912965

  1. Some Investigations on the Taxonomy of the Emys orbicularis (Linnaeus, 1758) (Testudinata: Emydidae) Specimens from Aegean Region of Turkey

    Microsoft Academic Search

    Dinçer Ayaz; Abidin Budak

    Özet: Türkiye'nin Ege Bölgesi'nden Emys orbicularis (Linnaeus, 1758) (Testudinata: Emydidae) örneklerinin taksonomisi üzerine bazi ara?tirmalar. Bu çali?mada Türkiye'nin Ege Bölgesi'ndeki dokuz farkli lokaliteden toplanan 71 E. orbicularis örne?i incelenmi?tir. Morfolojik kar?ila?tirma için örneklerin 19 metrik karakteri ve bu metrik karakterlerden geli?tirilmi? 35 oran çe?itli populasyonlar arasindaki fark ve benzerlikleri ortaya koymak için incelenmi?tir. Farkli populasyonlara arasindaki morphometrik kar?ila?tirmalara ilaveten, renk

  2. Light trap transects – a field method for ascertaining the habitat preferences of night-flying Lepidoptera, using Mythimna turca (Linnaeus 1761) (Lepidoptera: Noctuidae) as an example

    Microsoft Academic Search

    Adrian Spalding; Mark Parsons

    2004-01-01

    The habitat associations of the noctuid moth Double Line Mythimna turca (Linnaeus 1761) were studied in three areas in Britain by setting up light traps equidistant along transects which passed through different habitat types. Counts were made of M. turca at each trap station and the results compared with the habitat present in the vicinity of each trap. The results

  3. Light trap transects – a field method for ascertaining the habitat preferences of night-flying Lepidoptera, using Mythimna turca (Linnaeus 1761) (Lepidoptera: Noctuidae) as an example

    Microsoft Academic Search

    Adrian Spalding; Mark Parsons

    2004-01-01

    The habitat associations of the noctuid moth Double Line Mythimna turca (Linnaeus 1761) were studied in three areas in Britain by setting up light traps equidistant alon0g transects which passed through different habitat types. Counts were made of M. turca at each trap station and the results compared with the habitat present in the vicinity of each trap. The results

  4. On the identity of lacerta punctata Linnaeus 1758, the type species of the genus Euprepis Wagler 1830, and the generic assignment of Afro?Malagasy skinks

    Microsoft Academic Search

    Aaron M. Bauer

    2003-01-01

    A recent phylogenetic revision placed Afro?Malagasy Mabuya Fitzinger, 1826 into the genus Euprepis Wagler, 1830, with the type species Lacerta punctata Linnaeus, 1758 (syn. Mabuya homalocephala fide Andersson [1900]). Identification of L. punctatus with Euprepis destabilizes existing name usage for both a common southern African skink and a common south Asian skink. Reconsideration of the types of this taxon reveals

  5. Leaf litter removal by the snail Terebralia palustris (Linnaeus) and sesarmid crabs in an East African mangrove forest (Gazi Bay, Kenya)

    Microsoft Academic Search

    F. J Slim; M. A. Hemminga; C. Ochieng; N. T Jannink; E Cocheret de la Morinière; G. Van der Velde

    1997-01-01

    Quantitative data on leaf litter removal activity of macrozoobenthic organisms in the mangrove forests of East Africa are virtually non-existent. In the present study, litter removal activity was determined in two contrasting types of mangrove stands in Gazi Bay (Kenya). In the relatively elevated Ceriops tagal vegetation, which is only flooded during spring tides, the detritivorous snail Terebralia palustris (Linnaeus)

  6. Macroparasites and their communities of the European eel Anguilla anguilla (Linnaeus) in the Czech Republic.

    PubMed

    Moravec, Frantisek; Scholz, Tomas

    2015-01-01

    This paper summarises the results of parasitological examinations of the European eel Anguilla anguilla (Linnaeus) in the Czech Republic, carried out at the Institute of Parasitology, Czech Academy of Sciences (previously the Czechoslovak Academy of Sciences) within the period of 50 years (1958-2008). Even though this survey is limited to the Czech Republic, it provides extensive data probably incomparable with any other study anywhere regarding the number of eels examined and parasites found. A total of 723 eels was examined from 42 localities that belong to all of the three main river drainage systems in the country, i.e. the Elbe, Danube and Oder river basins. Of the 31 species of adult and larval macroparasites including Monogenea (4 species), Trematoda (3), Cestoda (3), Nematoda (11), Acanthocephala (5), Hirudinea (1), Bivalvia (1), Copepoda (1), Branchiura (1) and Acariformes (1), most of them (30) were recorded from the Elbe River basin. These parasites can be divided into three main groups regarding their host specificity: parasites specific for eels (26%), non-specific adult parasites occurring also in other fishes (61%) and non-specific larvae (13%). The highest number (19) of parasite species was recorded in the Mácha Lake fishpond system in northern Bohemia. The parasite communities in eels from the individual localities exhibited large differences in their species composition and diversity depending on local ecological conditions. The parasite fauna of A. anguilla in the Czech Republic is compared with that in other European countries. The nematode Cucullanus egyptae Abdel-Ghaffar, Bashtar, Abdel-Gaber, Morsy, Mehlhorn, Al Quraishy et Mohammed, 2014 is designated as a species inquirenda. PMID:26130652

  7. Characterization of Bacillus thuringiensis isolates with potential for control of Aedes aegypti (Linnaeus, 1762) (Diptera: Culicidae).

    PubMed

    Santos, F P; Lopes, J; Vilas-Bôas, G T; Zequi, J A C

    2012-04-01

    Aedes aegypti (Linnaeus) is the vector of dengue virus in Brazil. Bioinsecticides based on Bacillus thuringiensis have shown satisfactory results in the control of Diptera, due to the production of proteins called Cry and Cyt. The aim of the present study was to select B. thuringiensis isolates carrying the cry and cyt genes, which are efficient in the control of Ae. aegypti. A collection of 27 isolates of B. thuringiensis, derived from various regions in Brazil, was evaluated using selective bioassays against A. aegypti larvae. Of the 27 isolates, five showed 100% larval mortality at a concentration of 0.05 ppm and the toxicity of these isolates in quantitative bioassays did not differ significantly at temperatures of 15, 25 and 35 °C. In addition, these isolates showed statistical differences for the LC50 values only above pH 9, which indicates a maintenance in insecticide potential in a wide range of alkaline pH values. This result is promising, considering that waste treatment reservoirs generally show an acid pH and higher temperatures. These isolates were also evaluated by PCR using specific primers for the genes cry4A, cry4B, cry10A, cry11, cyt1 and cyt2. The analyses demonstrated that all the five isolates showed amplification products for all the studied genes showing four different Cry proteins, besides Cyt proteins. The obtained results of bioassays and PCR demonstrates the great potential for the use of these isolates in controlling populations of Ae. Aegypti and perhaps other species of mosquitoes in a wide range of environments. PMID:22178674

  8. Optimization of enzyme-assisted extraction and characterization of collagen from Chinese sturgeon (Acipenser sturio Linnaeus) skin

    PubMed Central

    Feng, Weiwei; Zhao, Ting; Zhou, Ye; Li, Fang; Zou, Ye; Bai, Shiqi; Wang, Wei; Yang, Liuqing; Wu, Xiangyang

    2013-01-01

    Background: Sturgeon (Acipenser sturio Linnaeus) skin contains high amount of nutrients including unsaturated fatty acids and collagen. A pepsin-assisted extraction procedure was developed and optimized for the extraction of collagen from Chinese sturgeon (Acipenser sturio Linnaeus) skins. Objective: To determine the optimum conditions with the maximum yield of the pepsin-soluble collagen (PSC) extraction. Materials and Methods: The conditions of the extraction were optimized using response surface methodology. The Box–Behnken design was used to evaluate the effects of the three independent variables (extraction time, enzyme concentration, and solid–liquid ratio) on the PSC yield of the sturgeon skin. Results: The optimal conditions were: solid–liquid ratio of 1:11.88, enzyme concentration of 2.42%, and extraction time of 6.45 h. The maximum yield of 86.69% of PSC was obtained under the optimal conditions. This value was not significantly different from the predicted value (87.4%) of the RSM (P < 0.05). Conclusion: The results of this study indicated that the production of PSC from sturgeon skin is feasible and beneficial. The patterns of sodium dodecyl sulfate-polyacrylamide gel electrophoretic patterns (SDS-PAGE) indicated that the sturgeon skin contains type I collagen, which is made of ?-chain and ?-chain. The infrared spectra of the collagens also indicated that pepsin hydrolysis does not affect the secondary structure of collagen, especially triple-helical structure. PMID:24143042

  9. Establishment and characterization of a cell line developed from the neonate larvae of Papilio demoleus Linnaeus (Lepidoptera: Papilionidae).

    PubMed

    Ding, Wei-Feng; Feng, Ying; Zhang, Xin; Li, Xian; Wang, Cheng-Ye

    2013-02-01

    A new cell line named RIRI-PaDe, developed from the neonate larvae of Papilio demoleus Linnaeus, was established in modified Grace's medium supplemented with 20% fetal bovine serum. The cell line was incubated at 28°C and consisted of attached round and short spindle-like cells. The population doubling time was 55 h. The chromosome numbers varied widely from 24 to 136 with a mode of 59 at the 71st passage. Comparison of mitochondrial cytochrome c oxidase subunit I gene of the cell line and neonate larvae confirmed that the cell line was of P. demoleus origin. This cell line was susceptible to the Autographa californica multicapsid nucleopolyhedrovirus and Apocheima cinerarius nucleopolyhedrovirus. PMID:23299317

  10. First evidence of presence of plastic debris in stomach of large pelagic fish in the Mediterranean Sea.

    PubMed

    Romeo, Teresa; Pietro, Battaglia; Pedà, Cristina; Consoli, Pierpaolo; Andaloro, Franco; Fossi, Maria Cristina

    2015-06-15

    This study focuses, for the first time, on the presence of plastic debris in the stomach contents of large pelagic fish (Xiphias gladius, Thunnus thynnus and Thunnus alalunga) caught in the Mediterranean Sea between 2012 and 2013. Results highlighted the ingestion of plastics in the 18.2% of samples. The plastics ingested were microplastics (<5mm), mesoplastics (5-25mm) and macroplastics (>25mm). These preliminary results represent an important initial phase in exploring two main ecotoxicological aspects: (a) the assessment of the presence and impact of plastic debris on these large pelagic fish, and (b) the potential effects related to the transfer of contaminants on human health. PMID:25936574

  11. Impact of elevated levels of atmospheric CO2 and herbivory on flavonoids of soybean (Glycine max Linnaeus).

    PubMed

    O'Neill, Bridget F; Zangerl, Arthur R; Dermody, Orla; Bilgin, Damla D; Casteel, Clare L; Zavala, Jorge A; DeLucia, Evan H; Berenbaum, May R

    2010-01-01

    Atmospheric levels of carbon dioxide (CO2) have been increasing steadily over the last century. Plants grown under elevated CO2 conditions experience physiological changes, particularly in phytochemical content, that can influence their suitability as food for insects. Flavonoids are important plant defense compounds and antioxidants that can have a large effect on leaf palatability and herbivore longevity. In this study, flavonoid content was examined in foliage of soybean (Glycine max Linnaeus) grown under ambient and elevated levels of CO2 and subjected to damage by herbivores in three feeding guilds: leaf skeletonizer (Popillia japonica Newman), leaf chewer (Vanessa cardui Linnaeus), and phloem feeder (Aphis glycines Matsumura). Flavonoid content also was examined in foliage of soybean grown under ambient and elevated levels of O3 and subjected to damage by the leaf skeletonizer P. japonica. The presence of the isoflavones genistein and daidzein and the flavonols quercetin and kaempferol was confirmed in all plants examined, as were their glycosides. All compounds significantly increased in concentration as the growing season progressed. Concentrations of quercetin glycosides were higher in plants grown under elevated levels of CO2. The majority of compounds in foliage were induced in response to leaf skeletonization damage but remained unchanged in response to non-skeletonizing feeding or phloem-feeding. Most compounds increased in concentration in plants grown under elevated levels of O3. Insects feeding on G. max foliage growing under elevated levels of CO2 may derive additional antioxidant benefits from their host plants as a consequence of the change in ratios of flavonoid classes. This nutritional benefit could lead to increased herbivore longevity and increased damage to soybean (and perhaps other crop plants) in the future. PMID:20077130

  12. Redescription of immatures and bionomy of the Palaearctic species dicladispa testacea (Linnaeus, 1767) (Coleoptera: Chrysomelidae: Cassidinae: Hispini), a leaf-mining hispine beetle.

    PubMed

    Swi?toja?ska, Jolanta; Borowiec, Lech; Stach, Ma?gorzata

    2014-01-01

    Dicladispa testacea (Linnaeus, 1767) is a member of the tribe Hispini Gyllenhal, 1813 associated with plants of the family Cistaceae Juss. and is widely distributed in the Mediterranean Basin. Immature stages are described in detail, including line drawings, chaetotaxy, sculpture of integument, and SEM photos of morphological details. This is the first detailed description of immatures in the tribe Hispini, and this can be regarded as a model description for studies of other species in the tribe. Diagnostic characters for this species in comparison with other described larvae and pupae of the genus Dicladispa and the sympatric Hispa atra Linnaeus, 1767 are discussed. Some remarks on the biology of Dicladispa testacea, such as host plants, feeding patterns of adults, structure of larval and pupal mines, are also given. PMID:24943146

  13. Molecular evidence for the occurrence of Contracaecum rudolphii A (Nematoda: Anisakidae) in shag Phalacrocorax aristotelis (Linnaeus) (Aves: Phalacrocoracidae) from Sardinia (western Mediterranean Sea)

    Microsoft Academic Search

    Sarra Farjallah; Paolo Merella; Sofia Ingrosso; Andrea Rotta; Badreddine Ben Slimane; Giovanni Garippa; Khaled Said; Marina Busi

    2008-01-01

    Specimens of Contracaecum rudolphii Hartwich, 1964 (Nematoda: Anisakidae) from Phalacrocorax aristotelis (Linnaeus) from the Archipelago of La Maddalena (Sardinia, western Mediterranean Sea) were characterised genetically and compared with C. rudolphii A sensu D’Amelio et al. 1990 and C. rudolphii B sensu D’Amelio et al. 1990 from Phalacrocorax carbo sinensis (Blumenbach) from north-eastern Italy, and with C. rudolphii C sensu D’Amelio

  14. Populations and home range relationships of the box turtle, Terrapene c. carolina (Linnaeus)

    USGS Publications Warehouse

    Stickel, L.F.

    1950-01-01

    SUMMARY: A population study of the box turtle (Terrapene c. carolina Linnaeus) was made during the years 1944 to 1947 at the Patuxent Research Refuge, Maryland. A thirty acre area in well drained bottomland forest on the flood plain of the Patuxent River was selected for intensive study. Similarly forested land extended in all directions from the study plot. Markers were established at eighty-three foot intervals over the study plot for reference in recording locality data. Individuals were marked by filing notches in the marginal scutes according to a code system. There were 2109 collections of study area turtles. Records of collecting sites and turtle behavior showed that in the bottomlands habitat cover is utilized extensively during the day as well as at night. Turtles not actively moving about are almost always found in or around brush piles, heaps of debris, and tangles of vines and briars. Gully banks and woods openings are used for sunning. Turtles are occasionally found in the mud or water of the gullies. The commonest type of night retreat is a cavity constructed by the turtle in leaves, debris, or earth. These cavities, termed 'forms,' may be used only once, but are sometimes used repeatedly, often at intervals of several days or more. Different turtles sometimes use the same form on successive nights. Weather conditions most favorable to turtle activity are high humidity, warm sunny days, and frequent rains. The most unfavorable influences are low temperatures and drought. On most summer days there are some active turtles but individual turtles are not active every day. Periods of activity are alternated with periods of quiet even in favorable weather. This behavior is most pronounced in early spring and late fall when inactive days are often more numerous than active ones. Adult turtles occupy specific home ranges which they maintain from year to year. The turtles living in the study plot retained their ranges even through a flood that completely covered the area. Maximum home range diameters were determined by measurements of the mapped ranges of individual turtles. The average range of adult males was 330 feet, adult females 370 feet. The difference between male and female ranges was not statistically significant. There was no evidence of defense of territory. Ranges of turtles of all ages and both sexes overlapped grossly. Turtles were frequently found near each other and no antagonistic behavior was observed. A trail-laying device was developed in order to follow individual travel routes. The trailer consists of a light weight housing fastened to the turtle's back. It contains a spool of white thread that unwinds as the turtle moves, thus marking its exact route. Turtles selected for this more detailed study were followed with trailers for a total of 456 turtle days. Maps illustrating their travels are shown. Normal movements within the home range are characterized by, (1) turns, doublings, detours, and criss-crossing paths completely covering the area, (2) interspersion of fairly direct traverses of the home range, (3) frequently repeated travels over certain paths or routes. Trailer records and mapped collection records both show that the maximum limits of the home range are ordinarily reached within a few days or weeks. This general procedure is varied by some turtles to include intensive coverage of only one portion of the range at a time. Some turtles have two home ranges and travel between them at infrequent intervals. One turtle showing this behavior was followed with a trailer for 161 days during 1946 and 1947. Trips outside the home range are made by some turtles. These include egg laying trips by females as well as trips of unexplained nature made by both males and females. Turtles from other areas occasionally occur as transients in the study plot. The size of the population was estimated on the basis of collections during on

  15. Populations and home range relationships of the box turtle, Terrapene carolina (Linnaeus)

    USGS Publications Warehouse

    Stickel, L.F.

    1949-01-01

    A population study of Terrapene carolina (Linnaeus) was made at the Patuxent Research Refuge, Maryland, from 1944 to 1947. A thirty acre area in bottomland forest was selected for intensive study. Turtles were marked by filing notches in marginal scutes according to a code. Turtles make extensive use of brushy shelter during the day as well.as at night. Gully banks and woods openings are used for sunning. Nights are usually spent in a 'form,' constructed by the turtle in leaves, debris, or earth. A form may be used once or it may be used repeatedly by the same or different turtles. Weather conditions most favorable to turtle activity are high humidity, warm sunny days, and frequent rains. Periods of activity are alternated with periods of quiet, even in favorable weather. There is no evidence for territorialism. Ranges of turtles of all ages and both sexes overlap grossly. Turtles are frequently found near each other but no antagonistic behavior has been observed. Adult turtles occupy specific home ranges which they maintain from year to year. Turtles retained their ranges even though a flood that completely covered the study area. Maximum home range diameters were determined by measurements of the mapped ranges of individual turtles. There was no significant difference between sizes of male and female ranges: males 33O+ 26 feet, females 37O+29 feet. A trail-laying device was used in following travel routes for 456 turtle days. Normal movements within the home range are characterized by (1) turns, doublings, detours, and criss-crossing paths, (2) interspersion of fairly direct traverses of the home range, (3) frequently repeated travels over certain routes. Maximum limits of the home range are ordinarily reached within a few days or weeks, although some turtles cover only one portion of the range at a time. Some turtles have two home ranges. One of these turtles was followed with a trailer for 161 days in 1946 and 1947. Trips outside the home range are made by females for egg laying. Trips of unexplained nature are made by both males and females. Turtles from other areas are occasional transients through the study plot. Standardized census trips provided data for estimating the size of the population. Census data were taken after females had returned from egg laying. The samples were spaced at intervals of a week or more to allow free movement of turtles over their ranges and assure more nearly equal availability of all turtles. These standard samples were compared by a collection ratio. Assumptions involved in the use of this ratio are discussed. Correction factors were applied to make allowance for turtles whose ranges.were partly inside and partly outside the study area, and for transient turtles. A second estimate, on the basis of the entire season's collecting, gave closely comparable results. The population of the study area is estimated to be between four and five turtles per acre, with juveniles constituting less than ten per cent of the total.

  16. Extensive fragmentation of the X chromosome in the bed bug Cimex lectularius Linnaeus, 1758 (Heteroptera, Cimicidae): a survey across Europe.

    PubMed

    Sadílek, David; S?áhlavský, František; Vilímová, Jitka; Zima, Jan

    2013-10-01

    Variation in the number of chromosomes was revealed in 61 samples of Cimex lectularius Linnaeus, 1758 from the Czech Republic and other European countries, hosted on Myotis Kaup, 1829 (4) and Homo sapiens Linnaeus, 1758 (57). The karyotype of all the specimens of Cimex lectularius analysed contained 26 autosomes and a varying number of the sex chromosomes. The number of sex chromosomes showed extensive variation, and up to 20 fragments were recorded. Altogether, 12 distinct karyotypes were distinguished. The male karyotypes consisted of 29, 30, 31, 32, 33, 34, 35, 36, 37, 40, 42 and 47 chromosomes. The females usually exhibited the number of chromosomes which was complementary to the number established in the males from the same sample. However, 11 polymorphic samples were revealed in which the karyotypes of females and males were not complementary each other. The complement with 2n = 26+X1X2Y was found in 44% of the specimens and 57,4% samples of bed bugs studied. The karyotypes with higher chromosome numbers as well as individuals with chromosomal mosaics were usually found within the samples exhibiting particularly extensive variation between individuals, and such complements were not found within samples contaning a few or single specimen. The occurrence of chromosomal mosaics with the karyotype constitution varying between cells of single individual was observed in five specimens (4.3%) from five samples. We assume that polymorphism caused by fragmentation of the X chromosome may result in meiotic problems and non-disjunction can produce unbalanced gametes and result in lowered fitness of individuals carrying higher numbers of the X chromosome fragments. This effect should be apparently enhanced with the increasing number of the fragments and this may be the reason for the observed distribution pattern of individual karyotypes in the studied samples and the rarity of individuals with extremely high chromosome numbers. The assumed lowering of the fitness of individuals carrying higher numbers of the X chromosome fragments could affect population dynamics of variable populations. PMID:24455100

  17. Bioaccumulation of trace metals in the brown shrimp Crangon crangon (Linnaeus, 1758) from the German Wadden Sea.

    PubMed

    Jung, K; Zauke, G-P

    2008-07-30

    The objective of the present study is to evaluate the suitability of the brown shrimp Crangon crangon (Linnaeus, 1758) from the German Wadden Sea as a biomonitor for the trace metals Cd, Pb, Cu, and Zn and to analyse whether the two-compartment model sensu OECD could be used as a predictive tool to assess environmental quality. The tested decapods accumulated Cd and Pb upon exposure and it was possible to estimate significant model parameters of two-compartment models, while they did not respond to waterborn Cu and Zn. Kinetic BCFs at theoretical equilibrium were 860 for Cd and 750 for Pb. A tentative estimation showed the following sensitivity of C. crangon to an increase of soluble metal exposure: 0.4 microg Cd l(-1) and 0.9 microg Pb l(-1). Available information can be used to quantify a measure of agreement or disagreement between bioaccumulation in various decapods. This can be regarded as an important step in the calibration of biomonitors, which is necessary to assess the potential for bioaccumulation on different temporal and geographical scales. PMID:18571744

  18. Effect of unialgal diets on the composition of fatty acids and sterols in juvenile ark shell Tegillarca granosa Linnaeus.

    PubMed

    Xu, Jilin; Zhou, Haibo; Yan, Xiaojun; Zhou, Chengxu; Zhu, Peng; Ma, Bin

    2012-04-18

    This study has investigated the effects of six different unialgal diets ( Chaetoceros calcitrans , Platymonas helgolandica , Chlorella sp., Isochrysis galbana , Nannochloropsis oculata , and Pavlova viridis ) on the composition of fatty acids and sterols in juvenile ark shell Tegillarca granosa Linnaeus. The best feeding effects on the growth of shellfish were found in C. calcitrans, followed by I. galbana and P. viridis, whereas Chlorella sp. and N. oculata exhibited relatively poor effects. The fatty acid and sterol compositions in the six microalgae and the juvenile ark shell after feeding were analyzed, and 39 fatty acids and 18 sterols were identified. Although the results demonstrate a close correlation between the sterol compositions in algal species and juvenile ark shell, a similar correlation was not observed between fatty acids. In the juvenile ark shell fed microalgae, the ratio of total saturated fatty acids (SFA) rapidly decreases, whereas the proportion of total polyunsaturated fatty acids (PUFAs) increases considerably. The abundances of AA, EPA, and DHA increase most significantly in shellfish with better growth (fed C. calcitrans, I. galbana, and P. viridis). The number of sterol species is reduced, but the total sterol content in groups fed corresponding microalgae increases, and abundant plant sterols, instead of cholesterol, are accumulated in juvenile ark shell fed appropriate microalgae I. galbana and P. viridis. Therefore, to be more conducive to human health, I. galbana and P. viridis, of the six experimental microalgae, are recommended for artificial ark shell culture. PMID:22443233

  19. Anti-Inflammatory Potential of Monogalactosyl Diacylglycerols and a Monoacylglycerol from the Edible Brown Seaweed Fucus spiralis Linnaeus

    PubMed Central

    Lopes, Graciliana; Daletos, Georgios; Proksch, Peter; Andrade, Paula B.; Valentão, Patrícia

    2014-01-01

    A monoacylglycerol (1) and a 1:1 mixture of two monogalactosyl diacylglycerols (MGDGs) (2 and 3) were isolated from the brown seaweed Fucus spiralis Linnaeus. The structures were elucidated by spectroscopic means (NMR and MS) and by comparison with the literature. Compound 1 was composed of a glycerol moiety linked to oleic acid (C18:1 ?9). Compounds 2 and 3 contained a glycerol moiety linked to a galactose unit and eicosapentaenoic acid (C20:5 ?3) combined with octadecatetraenoic acid (C18:4 ?3) or linolenic acid (C18:3 ?3), respectively. The isolated compounds were tested for their cytotoxic and anti-inflammatory activity in RAW 264.7 macrophage cells. All of them inhibited NO production at non-cytotoxic concentrations. The fraction consisting of compounds 2 and 3, in a ratio of 1:1, was slightly more effective than compound 1 (IC50 of 60.06 and 65.70 µg/mL, respectively). To our knowledge, this is the first report of these compounds from F. spiralis and on their anti-inflammatory capacity. PMID:24619274

  20. Description and evaluation of imposex in Strombus canarium Linnaeus, 1758 (Gastropoda, Strombidae): a potential bio-indicator of tributyltin pollution.

    PubMed

    Cob, Zaidi Che; Arshad, Aziz; Bujang, Japar Sidik; Abd Ghaffar, Mazlan

    2011-07-01

    Strombus canarium Linnaeus, 1758 is an important gastropod species within the study area and was traditionally collected for food by the locals. The objective of the present study is to assess the incidence of imposex and its severity in this species. Adult conchs were sampled during their main reproductive period, from October 2005 to January 2006, at Sungai Pulai estuary, Johor Straits, Malaysia. A total of 32.81% of adult females showed imposex characteristics, with varying degrees of severity though. The relative penis size (RPS) index ranged from 1.74 to 33.29 (mean = 13.40 ± 2.27, n = 21), while the relative penis length (RPL) index ranged from 6.28 to 55.19 (mean = 25.83 ± 3.33, n = 21). The use of vas deferens sequence (VDS) index was however cannot be applied as the presence of egg groove obscured any vas deferens development in affected females. Sequence of imposex (male penis) development in female conch, from merely a small stump to an advance male penis homologous was therefore carefully analyzed and described, and an alternative imposex classification scheme was proposed. S. canarium can be a good indicator for monitoring of organotin pollution within the study area. However, more studies are needed in order to further develop and test its validity and application, such as its correlation with levels of pollutant within the tissues and the environment, as well as its application on other Strombus species. PMID:20824325

  1. Interactions of 2,4,6-trinitrotoluene (TNT) with xenobiotic biotransformation system in European eel Anguilla anguilla (Linnaeus, 1758).

    PubMed

    Della Torre, Camilla; Corsi, Ilaria; Arukwe, Augustine; Valoti, Massimo; Focardi, Silvano

    2008-11-01

    The aim of the present study was to investigate the interaction of 2,4,6-trinitrotoluene (TNT) with liver biotransformation enzymes in European eel Anguilla anguilla (Linnaeus, 1758). Eels were exposed to 0.5, 1 and 2.5mg/l nominal concentrations of TNT for 6 and 24h. Modulation of CYP1A1, UDPGT and GST genes was investigated by real-time PCR. Total CYP450 content, NADPH cytochrome c reductase activity, CYP1A and CYP2B-like activities, such as EROD, MROD and BROD, as well as GST and UDPGT activities, were measured by biochemical assays. An in vitro study was performed on EROD in order to evaluate catalytic modulation by TNT. No modulation of the CYP1A1 gene or protein was observed in TNT-exposed eels. On the other hand, a significant decline of EROD and MROD activities was observed in vivo. An increase in NADPH cyt c reductase, and phase II enzymes (UDPGT and GST) were observed at both gene expression and activity levels. The overall results indicated that TNT is a potential competitive inhibitor of CYP1A activities. A TNT metabolic pathway involving NADPH cyt c reductase and phase II enzymes is also suggested. PMID:18407354

  2. Modification of the liver fatty acids by Hibiscus sabdariffa Linnaeus (Malvaceae) infusion, its possible effect on vascular reactivity in a metabolic syndrome model.

    PubMed

    Pérez-Torres, Israel; Zúñiga Muñoz, Alejandra; Beltrán-Rodríguez, Ulises; Díaz-Díaz, Eulises; Martínez-Memije, Raúl; Guarner Lans, Verónica

    2014-01-01

    We investigated the effects of Hibiscus sabdariffa Linnaeus (HSL)-fed infusion on the fatty acid (FA) profile in liver of metabolic syndrome (MS) rats and its possible effect on vascular reactivity. Body mass, intra-abdominal fat, triglycerides, insulin, blood pressure, saturated, monounsaturated FA, NEFAs, ?(9)-, ?(6)-desaturases and vasoconstriction were increased, while vasorelaxation, polyunsaturated FA, endothelial nitric oxide and [Formula: see text]/[Formula: see text] ratio decreased in MS versus Control, but HSL infusion modified it and increased ?(5)-desaturase. The results suggest that the alteration in FA liver metabolism in the MS contributes to impaired vascular reactivity, but treatment with of HSL infusion can improve this condition. PMID:23734849

  3. ANALYSIS OF ENVIRONMENTAL IMPACT WITH THE USE OF Echinometra lucunter (LINNAEUS, 1758) (ECHINODERMATA, ECHINOIDEA) ON THE ROCKY SHORES OF SÃO LOURENÇO BEACH, INDAIÁ BEACH AT BERTIOGA, AND PRAIA BRANCA ISLAND AND PERNAMBUCO BEACH AT GUARUJÁ (BAIXADA SANTISTA - SP)

    Microsoft Academic Search

    M. Silva; C. J. David

    The aim of this study is to improve the data concerning with the distributions of Echinometra lucunter (Linnaeus, 1758) (Echinoidea), for evaluations on the environmental impact and the state of threat of the class Echinoidea. The quantitative analysis of the biological parameters of E. lucunter were developed for the rocky shores of São Lourenço and Indaiá beach, and in the

  4. Induction of gynogenetic and androgenetic haploid and doubled haploid development in the brown trout (Salmo trutta Linnaeus 1758).

    PubMed

    Michalik, O; Dobosz, S; Zalewski, T; Sapota, M; Ocalewicz, K

    2015-04-01

    Gynogenetic and androgenetic brown trout (Salmo trutta Linnaeus 1758) haploids (Hs) and doubled haploids (DHs) were produced in the present research. Haploid development was induced by radiation-induced genetic inactivation of spermatozoa (gynogenesis) or eggs (androgenesis) before insemination. To provide DHs, gynogenetic and androgenetic haploid zygotes were subjected to the high pressure shock to suppress the first mitotic cleavage. Among haploids, gynogenetic embryos were showing lower mortality when compared to the androgenetic embryos; however, most of them die before the first feeding stage. Gynogenetic doubled haploids provided in the course of the brown trout eggs activation performed by homologous and heterologous sperm (rainbow trout) were developing equally showing hatching rates of 14.76 ± 2.4% and 16.14 ± 2.90% and the survival rates at the first feeding stage of 10.48 ± 3.48% and 12.78 ± 2.18%, respectively. Significantly, lower survival rate was observed among androgenetic progenies from the diploid groups with only few specimens that survived to the first feeding stage. Cytogenetic survey showed that among embryos from the diploid variants of the research, only gynogenetic individuals possessed doubled sets of chromosomes. Thus, it is reasonable to assume that radiation employed for the genetic inactivation of the brown trout eggs misaligned mechanism responsible for the cell divisions and might have delayed or even arrested the first mitotic cleavage in the androgenetic brown trout zygotes. Moreover, protocol for the radiation-induced inactivation of the paternal and maternal genome should be adjusted as some of the cytogenetically surveyed gynogenetic and androgenetic embryos exhibited fragments of the irradiated chromosomes. PMID:25601334

  5. Coccidia of New World psittaciform birds (Aves: Psittaciformes): Eimeria ararae n. sp. (Apicomplexa: Eimeriidae) from the blue-and-yellow macaw Ara ararauna (Linnaeus).

    PubMed

    do Bomfim Lopes, Bruno; Berto, Bruno Pereira; de Carvalho Balthazar, Lianna Maria; Coelho, Cleide Domingues; Neves, Daniel Medeiros; Lopes, Carlos Wilson Gomes

    2014-06-01

    In the New World, the avian order Psittaciformes comprises 142 species, yet to date only 3 (2%) of the species have been examined for coccidia, and from these only four species of Eimeria Schneider, 1875 have been described. In this study, a new coccidian species (Protozoa: Apicomplexa: Eimeriidae) obtained from the blue-and-yellow macaw Ara ararauna (Linnaeus) is reported from Brazil. Oöcysts of Eimeria ararae n. sp. are ovoidal, measure 28.7 × 20.2 ?m and have a smooth, bi-layered wall c.1.1 ?m thick. Both micropyle and oöcyst residuum are absent, but polar granules are present. Sporocysts are ovoidal and measure 17.0 × 8.3 µm, with knob-like, prominent Stieda body and sporocyst residuum is composed of granules; sub-Stieda body is absent. Sporozoites are vermiform with one refractile body and a nucleus. This is the fifth description of an eimerid coccidian infecting a New World psittaciform bird. PMID:24832188

  6. Two new species of Haliotrema Johnston & Tiegs, 1922 (Monogenea: Dactylogyridae) from Acanthurus nigrofuscus (Forsskål) and A. triostegus (Linnaeus) (Teleostei: Acanthuridae) in the South China Sea.

    PubMed

    Sun, Yuan; Yang, Chaopin; Yang, Tingbao

    2015-07-01

    Haliotrema nanhaiense n. sp. and Haliotrema triostegum n. sp. are described respectively from the gills of Acanthurus nigrofuscus (Forsskål) and Acanthurus triostegus (Linnaeus) in the South China Sea. Haliotrema nanhaiense n. sp. differs from other existing congeneric species by its male copulatory complex, comprising a C-shaped copulatory tube, a saucer-shaped base and a sickle-shaped accessory piece. Haliotrema triostegum n. sp. can be differentiated from all other members of Haliotrema by having a unique copulatory complex, a cup-shaped base, inverted L-shaped copulatory tube with a small sclerotised piece arising from its distal portion, and a large accessory piece from the proximal portion of copulatory tube. PMID:26063302

  7. Linnaeus University Vxj, Sweden

    E-print Network

    Duchowski, Andrew T.

    International business Japanese Journalism Languages Law Leadership and organization Legal studies international, with major opportunities for participation in both regional and worldwide networks. For more Biomedicine Business Administration Chemical Engineering Children, School, Society Communication

  8. Absorbed Dose Rate Due to Intake of Natural Radionuclides by Tilapia Fish (Tilapia nilotica,Linnaeus, 1758) Estimated Near Uranium Mining at Caetité, Bahia, Brazil

    NASA Astrophysics Data System (ADS)

    Pereira, Wagner de S.; Kelecom, Alphonse; Py Júnior, Delcy de Azevedo

    2008-08-01

    The uranium mining at Caetité (Uranium Concentrate Unit—URA) is in its operational phase. Aiming to estimate the radiological environmental impact of the URA, a monitoring program is underway. In order to preserve the biota of the deleterious effects from radiation and to act in a pro-active way as expected from a licensing body, the present work aims to use an environmental protection methodology based on the calculation of absorbed dose rate in biota. Thus, selected target organism was the Tilapia fish (Tilapia nilotica, Linnaeus, 1758) and the radionuclides were: uranium (U-238), thorium (Th-232), radium (Ra-226 and Ra-228) and lead (Pb-210). As, in Brazil there are no radiation exposure limits adopted for biota the value proposed by the Department of Energy (DOE) of the United States of 3.5×103 ?Gy y-1 has been used. The derived absorbed dose rate calculated for Tilapia was 2.51×100 ?Gy y-1, that is less than 0.1% of the dose limit established by DOE. The critical radionuclide was Ra-226, with 56% of the absorbed dose rate, followed by U-238 with 34% and Th-232 with 9%. This value of 0.1% of the limit allows to state that, in the operational conditions analyzed, natural radionuclides do not represent a radiological problem to biota.

  9. Assessment of heavy metal contamination in Hediste diversicolor (O.F. Müller, 1776), Mugil cephalus (Linnaeus, 1758), and surface sediments of Bafa Lake (Eastern Aegean).

    PubMed

    Aydin-Onen, S; Kucuksezgin, F; Kocak, F; Açik, S

    2015-06-01

    In the present study, the bioaccumulation of six heavy metals (Cd, Cr, Cu, Hg, Pb, and Zn) in Hediste (Nereis) diversicolor (O.F. Müller, 1776) and also in the muscle and liver of Mugil cephalus (Linnaeus, 1758) collected from seven stations in the Bafa Lake was investigated. Sediment samples were also collected in each site to assess heavy metal levels and to provide additional information on pollution of the lake. The mean concentrations of heavy metals in sediment, H. diversicolor, and muscle and liver of the fish were found to be in the magnitude of Cr>Pb>Zn>Cu>Cd>Hg, Zn>Cu>Cr>Pb>Hg>Cd, Zn>Cu>Pb>Cr?>Hg>Cd, and Cu>Zn>Cr>Cd>Pb>Hg, respectively. Hg, Cu, and Zn in H. diversicolor and Hg and Zn in muscle and also Hg, Cd, Cu, and Zn in liver of fish accumulated in a higher degree than in sediment. There was no clear relationship between metal concentrations in sediments, polychaetes, and fish, except Cr. According to international criteria and Turkish regulations, Pb and Zn values in edible muscle of the fish collected from stations S6 and S5 exceeded the food safety limits, respectively. The results of this study suggest that these sentinel species can be considered as good anthropogenic biological indicators for heavy metal pollution along the Bafa Lake. PMID:25567060

  10. A new species of Isospora Schneider, 1881 (Apicomplexa: Eimeriidae) infecting the intestine of the Mediterranean house gecko Hemidactylus turcicus Linnaeus (Reptilia: Gekkonidae).

    PubMed

    Abdel-Haleem, Heba M; Al-Quraishy, Saleh; Duszynski, Donald W; Abdel-Baki, Abdel-Azeem S

    2015-03-01

    A new species of Isospora Schneider, 1881 was discovered in the Mediterranean house gecko, Hemidactylus turcicus (Linnaeus) in Saudi Arabia. Both exogenous (sporulated oöcysts) and endogenous developmental stages (meronts, gamonts) were studied and measured. Sporulated oöcysts are spheroidal to slightly subspheroidal, 17-22 (18) µm wide, with a smooth, bi-layered oöcyst wall; micropyle, polar granule and oöcyst residuum are all absent. Sporocysts are ovoidal, 9-11 × 6-8 (10 × 7) µm, with both Stieda and sub-Stieda bodies, a dispersed granular sporocyst residuum, and four sporozoites. Endogenous stages develop extranuclearly in the cytoplasm of epithelial cells of the small intestine. Early uninucleate meronts are spheroidal, c.3-5 (4) µm wide. Multinucleated meronts are subspheroidal, 11-15 × 9-12 (13 × 10) µm, but mature meront and merozoites were not seen. Mature microgamonts, with up to 60 microgametes, are spheroidal, 11-15 (13) µm; macrogamonts are subspheroidal, with a prominent central nucleus, and measured 11-14 × 7-10 (12 × 8) µm. PMID:25693463

  11. Circulating Hemocytes from Larvae of the Japanese Rhinoceros Beetle Allomyrina dichotoma (Linnaeus) (Coleoptera: Scarabaeidae) and the Cellular Immune Response to Microorganisms

    PubMed Central

    Hwang, Sejung; Bang, Kyeongrin; Lee, Jiae; Cho, Saeyoull

    2015-01-01

    Hemocytes of the last larva of the Japanese rhinoceros beetle A. dichotoma (Linnaeus) (Coleoptera: Scarabaeidae) were classified as granulocytes, plasmatocytes, oenocytoids, spherulocytes, prohemocytes, and adipohemocytes. Among these cell types, only the granulocytes became immunologically activated with obvious morphological changes, displaying large amoeba-like, lobopodia-like, and fan-like structures. In addition, their cytoplasmic granules became larger and greatly increased in number. To explore whether these granules could be immunologically generated as phagosomes, total hemocytes were stained with LysoTracker. Greater than 90% of the granulocytes retained the LysoTracker dye at 4 h post-bacterial infection. In flow cytometry analysis, the red fluorescent signal was highly increased at 4 h post-bacterial infection (60.36%) compared to controls (5.08%), as was confirmed by fluorescent microscopy. After 12 h post-infection, these signals returned to basal levels. The uptake of pathogens by granulocytes rapidly triggered the translocation of the microtubule-associated protein 1 light chain 3 alpha (LC3) to the phagosome, which may result in enhanced pathogen killing. PMID:26030396

  12. The noncosmopolitanism paradigm of freshwater zooplankton: insights from the global phylogeography of the predatory cladoceran Polyphemus pediculus (Linnaeus, 1761) (Crustacea, Onychopoda).

    PubMed

    Xu, S; Hebert, P D N; Kotov, A A; Cristescu, M E

    2009-12-01

    A major question in our understanding of eukaryotic biodiversity is whether small bodied taxa have cosmopolitan distributions or consist of geographically localized cryptic taxa. Here, we explore the global phylogeography of the freshwater cladoceran Polyphemus pediculus (Linnaeus, 1761) (Crustacea, Onychopoda) using two mitochondrial genes, cytochrome c oxidase subunit I and 16s ribosomal RNA, and one nuclear marker, 18s ribosomal RNA. The results of neighbour-joining and Bayesian phylogenetic analyses reveal an exceptionally pronounced genetic structure at both inter- and intra-continental scales. The presence of well-supported, deeply divergent phylogroups across the Holarctic suggests that P. pediculus represents an assemblage of at least nine, largely allopatric cryptic species. Interestingly, all phylogenetic analyses support the reciprocal paraphyly of Nearctic and Palaearctic clades. Bayesian inference of ancestral distributions suggests that P. pediculus originated in North America or East Asia and that European lineages of Polyphemus were established by subsequent intercontinental dispersal events from North America. Japan and the Russian Far East harbour exceptionally high levels of genetic diversity at both regional and local scales. In contrast, little genetic subdivision is apparent across the formerly glaciated regions of Europe and North America, areas that historical demographic analyses suggest that were recolonized just 5500-24 000 years ago. PMID:19912535

  13. Antibacterial activity of GUAVA, Psidium guajava Linnaeus, leaf extracts on diarrhea-causing enteric bacteria isolated from Seabob shrimp, Xiphopenaeus kroyeri (Heller).

    PubMed

    Gonçalves, Flávia A; Andrade Neto, Manoel; Bezerra, José N S; Macrae, Andrew; Sousa, Oscarina Viana de; Fonteles-Filho, Antonio A; Vieira, Regine H S F

    2008-01-01

    Guava leaf tea of Psidium guajava Linnaeus is commonly used as a medicine against gastroenteritis and child diarrhea by those who cannot afford or do not have access to antibiotics. This study screened the antimicrobial effect of essential oils and methanol, hexane, ethyl acetate extracts from guava leaves. The extracts were tested against diarrhea-causing bacteria: Staphylococcus aureus, Salmonella spp. and Escherichia coli. Strains that were screened included isolates from seabob shrimp, Xiphopenaeus kroyeri (Heller) and laboratory-type strains. Of the bacteria tested, Staphylococcus aureus strains were most inhibited by the extracts. The methanol extract showed greatest bacterial inhibition. No statistically significant differences were observed between the tested extract concentrations and their effect. The essential oil extract showed inhibitory activity against S. aureus and Salmonella spp. The strains isolated from the shrimp showed some resistance to commercially available antibiotics. These data support the use of guava leaf-made medicines in diarrhea cases where access to commercial antibiotics is restricted. In conclusion, guava leaf extracts and essential oil are very active against S. aureus, thus making up important potential sources of new antimicrobial compounds. PMID:18327481

  14. Absorbed Dose Rate Due to Intake of Natural Radionuclides by Tilapia Fish (Tilapia nilotica,Linnaeus, 1758) Estimated Near Uranium Mining at Caetite, Bahia, Brazil

    SciTech Connect

    Pereira, Wagner de S [Coordenacao de Protecao Radiologica, Unidade de Tratamento de Minerios, Caixa Postal 961, CEP 37701-970, Pocos de Caldas, MG, BR Industrias Nucleares do Brasil (Brazil); Universidade Federal Fluminense, Programa de Pos-graduacao em Biologia Marinha (Brazil); Kelecom, Alphonse [Universidade Federal Fluminense, Programa de Pos-graduacao em Biologia Marinha (Brazil); Universidade Federal Fluminense, Programa de Pos-graduacao em Ciencia Ambiental, Instituto de Geociencias, av. Litoranea s/no, Boa Viagem, 24210-340 Niteroi, RJ Caixa Postal 107.092, CEP 24360-970, Niteroi, RJ (Brazil); Azevedo Py Junior, Delcy de [Coordenacao de Protecao Radiologica, Unidade de Concentrado de Uranio. Caixa Postal 7, CEP 46.400-000 Caetite, Bahia, Brasil Industrias Nucleares do Brasil (Brazil)

    2008-08-07

    The uranium mining at Caetite (Uranium Concentrate Unit--URA) is in its operational phase. Aiming to estimate the radiological environmental impact of the URA, a monitoring program is underway. In order to preserve the biota of the deleterious effects from radiation and to act in a pro-active way as expected from a licensing body, the present work aims to use an environmental protection methodology based on the calculation of absorbed dose rate in biota. Thus, selected target organism was the Tilapia fish (Tilapia nilotica, Linnaeus, 1758) and the radionuclides were: uranium (U-238), thorium (Th-232), radium (Ra-226 and Ra-228) and lead (Pb-210). As, in Brazil there are no radiation exposure limits adopted for biota the value proposed by the Department of Energy (DOE) of the United States of 3.5x10{sup 3} {mu}Gy y{sup -1} has been used. The derived absorbed dose rate calculated for Tilapia was 2.51x10{sup 0} {mu}Gy y{sup -1}, that is less than 0.1% of the dose limit established by DOE. The critical radionuclide was Ra-226, with 56% of the absorbed dose rate, followed by U-238 with 34% and Th-232 with 9%. This value of 0.1% of the limit allows to state that, in the operational conditions analyzed, natural radionuclides do not represent a radiological problem to biota.

  15. Molecular evidence for the occurrence of Contracaecum rudolphii A (Nematoda: Anisakidae) in shag Phalacrocorax aristotelis (Linnaeus) (Aves: Phalacrocoracidae) from Sardinia (western Mediterranean Sea).

    PubMed

    Farjallah, Sarra; Merella, Paolo; Ingrosso, Sofia; Rotta, Andrea; Slimane, Badreddine Ben; Garippa, Giovanni; Said, Khaled; Busi, Marina

    2008-12-01

    Specimens of Contracaecum rudolphii Hartwich, 1964 (Nematoda: Anisakidae) from Phalacrocorax aristotelis (Linnaeus) from the Archipelago of La Maddalena (Sardinia, western Mediterranean Sea) were characterised genetically and compared with C. rudolphii A sensu D'Amelio et al. 1990 and C. rudolphii B sensu D'Amelio et al. 1990 from Phalacrocorax carbo sinensis (Blumenbach) from north-eastern Italy, and with C. rudolphii C sensu D'Amelio et al. 2007 from Phalacrocorax auritus (Lesson) from west-central Florida, USA. The sequencing of the small subunit of the mitochondrial ribosomal RNA gene (rrnS) and by polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) analysis of the same gene and of the internal transcribed spacers (ITS) of nuclear ribosomal DNA (rDNA) allowed the identification of all specimens of C. rudolphii from P. aristotelis as C. rudolphii A. The results confirmed that the definition of genetic markers, following the analysis of nuclear ribosomal and mitochondrial DNA, provides quick and practical diagnostic tools for the detection of the 3 sibling species of C. rudolphii. The occurrence of C. rudolphii in P. aristotelis is reported for the first time from the Mediterranean area, improving the picture of the dispersal patterns of the populations of these piscivorous birds, and confirming the existence of different and isolated populations between the North and South European waters. PMID:18571974

  16. Caligus solea n. sp. (Copepoda: Caligidae) parasitic on the common sole Solea solea (Linnaeus) from the north-eastern Mediterranean off the Turkish coast.

    PubMed

    Demirkale, Ibrahim; Özak, Argun A; Yanar, Alper; Boxshall, Geoffrey Allan

    2014-09-01

    A new species of caligid copepod, Caligus solea n. sp., is described from the common sole Solea solea (Linnaeus) caught off the north-eastern Mediterranean coast of Turkey. Both sexes of the parasite were collected from all over the upper body surface of its host. The new species belongs to the macarovi-group of species as established by Boxshall & Gurney (Bull Br Mus (Nat Hist) (Zool), 39:161-178, 1980), with which it shares the following four characters: (i) leg 4 with two-segmented exopod, distal segment carrying three apical spines but no lateral spine; (ii) distal exopodal segment of leg 1 with three plumose setae posteriorly plus four distal margin elements, spine 1 naked, spines 2 and 3 with accessory process and spine 4 about twice length of the others; (iii) females with one-segmented abdomen while males with two-segmented abdomen; (iv) male maxilliped with myxal process opposing the tip of the subchela. However, the new species differs from its congeners within the macarovi-group in the number of sensillae on each papilla on and around the postantennal process, and also in the absence of serrations along the distal margin of the maxilla. This is the twenty-eighth species of Caligus to be reported from the Mediterranean Sea. PMID:25079813

  17. Seasonal Distributions and Migrations of Northwest Atlantic Swordfish: Inferences from Integration of Pop-Up Satellite Archival Tagging Studies

    PubMed Central

    Neilson, John D.; Loefer, Josh; Prince, Eric D.; Royer, François; Calmettes, Beatriz; Gaspar, Philippe; Lopez, Rémy; Andrushchenko, Irene

    2014-01-01

    Data sets from three laboratories conducting studies of movements and migrations of Atlantic swordfish (Xiphias gladius) using pop-up satellite archival tags were pooled, and processed using a common methodology. From 78 available deployments, 38 were selected for detailed examination based on deployment duration. The points of deployment ranged from southern Newfoundland to the Straits of Florida. The aggregate data comprise the most comprehensive information describing migrations of swordfish in the Atlantic. Challenges in using data from different tag manufacturers are discussed. The relative utility of geolocations obtained with light is compared with results derived from temperature information for this deep-diving species. The results show that fish tagged off North America remain in the western Atlantic throughout their deployments. This is inconsistent with the model of stock structure used in assessments conducted by the International Commission for the Conservation of Atlantic Tunas, which assumes that fish mix freely throughout the North Atlantic. PMID:25401964

  18. The influence of depth on mercury levels in pelagic fishes and their prey.

    PubMed

    Choy, C Anela; Popp, Brian N; Kaneko, J John; Drazen, Jeffrey C

    2009-08-18

    Mercury distribution in the oceans is controlled by complex biogeochemical cycles, resulting in retention of trace amounts of this metal in plants and animals. Inter- and intra-specific variations in mercury levels of predatory pelagic fish have been previously linked to size, age, trophic position, physical and chemical environmental parameters, and location of capture; however, considerable variation remains unexplained. In this paper, we focus on differences in ecology, depth of occurrence, and total mercury levels in 9 species of commercially important pelagic fish (Thunnus obesus, T. albacares, Katsuwonus pelamis, Xiphias gladius, Lampris guttatus, Coryphaena hippurus, Taractichthys steindachneri, Tetrapturus audax, and Lepidocybium flavobrunneum) and in numerous representatives (fishes, squids, and crustaceans) of their lower trophic level prey sampled from the central North Pacific Ocean. Results indicate that total mercury levels of predatory pelagic fishes and their prey increase with median depth of occurrence in the water column and mimic concentrations of dissolved organic mercury in seawater. Stomach content analysis results from this study and others indicate a greater occurrence of higher-mercury containing deeper-water prey organisms in the diets of the deeper-ranging predators, X. gladius, T. obesus, and L. guttatus. While present in trace amounts, dissolved organic mercury increases with depth in the water column suggesting that the mesopelagic habitat is a major entry point for mercury into marine food webs. These data suggest that a major determinant of mercury levels in oceanic predators is their depth of forage. PMID:19666614

  19. Effects of BmKIT 3 R gene transfer on pupal development of Bombyx mori Linnaeus using a Gal4/UAS binary transgenic system.

    PubMed

    Zhang, Hao-Kun; Cao, Guang-Li; Zhang, Xiao-Rong; Wang, Xiao-Juan; Xue, Ren-Yu; Gong, Cheng-Liang

    2012-03-28

    The pupal stage of the silkworm Bombyx mori Linnaeus lasts for approximately two weeks. However, prolongation of pupal duration would reduce the labor required to process and dry fresh cocoons. This study investigated the effects of BmKIT(3)(R) gene (from the Chinese scorpion Buthus martensii Karsch) transfer on the pupal development of B. mori using a Gal4/UAS binary transgenic system. Gal4 driven by a pupa-specific promoter BmWCP4 (from a B. mori wing-cuticle protein gene) or PDP (from a B. mori cocoonase gene), and BmKIT(3)(R) driven by a UAS cis-acting element were used to construct novel piggyBac-derived plasmids containing a neomycin-resistance gene (neo) controlled by the Bombyx mori nucleopolyhedrovirus (BmNPV) ie-1 (immediate-early gene) promoter and a green fluorescent protein gene (gfp) under the control of the B. mori actin 3 (A3) promoter. The vector was transferred into silkworm eggs by sperm-mediated gene transfer. Transgenic silkworms were produced after screening for neo and gfp genes, and gene transfer was verified by polymerase chain reaction and dot-blot hybridization. The larval development of the hybrid progeny of Gal4- and UAS-transgenic silkworms was similar to that of normal silkworms, but some pupae failed to metamorphose into moths, and the development of surviving pupae was arrested as a result of BmKIT(3)(R) expression. Moreover, Gal4 driven by the BmWCP4 promoter delayed pupal development more effectively than that driven by the PDP promoter in the Gal4/UAS binary transgenic system. Pupal durations of hybrid transgenic silkworm progeny with BmWCP4 and PDP promoters were approximately 5, 2, and 4 days longer, respectively, compared to corresponding normal silkworms, BmWCP4/Gal4, and UAS/BmKIT(3)(R) transgenic silkworms, respectively. These results suggest new avenues of research for prolonging the pupal duration of silkworms. PMID:22429285

  20. The effect of Plantago major Linnaeus on serum total sialic acid, lipid-bound sialic acid, some trace elements and minerals after administration of 7,12-dimethylbenz(a)anthracene in rats.

    PubMed

    Oto, Gokhan; Ekin, Suat; Ozdemir, Hulya; Levent, Abdulkadir; Berber, Ismet

    2012-05-01

    The present study was designed to evaluate the effect of Plantago major Linnaeus (PM) extract on serum total sialic acid (TSA), lipid-bound sialic acid (LSA), some trace elements (copper (Cu), zinc (Zn) and iron) and mineral levels (magnesium, calcium and sodium) in Wistar albino rat administrated 7,12-dimethylbenz(a)anthracene (DMBA). Rats were divided into three equal groups (n = 6). Group I comprised the control group, group II was treated with DMBA (100 mg/kg, single dose) and group III was treated with DMBA (100 mg/kg single dose) and aqueous extract of PM 100 mg/kg/day for 60 days. After 60 days, statistical analyses showed that TSA and LSA levels in DMBA and DMBA + PM groups were significantly higher compared to the control group (TSA: p < 0.01, p < 0.05; LSA: p < 0.05, p < 0.05, respectively). Serum Zn levels were decreased in subjects treated with DMBA (p < 0.01) and DMBA + PM (p < 0.05) compared to the control group values. Serum Cu levels were increased in DMBA group and PM-treated group compared to the control group values. The results of this investigation showed that the levels of TSA and LSA changed significantly, which are sensitive markers for detecting the toxic effects of DMBA. On the other hand, observed decline in Zn levels in rats from DMBA + PM group might be due to decreased generation of free radicals and oxidative stress. Results from this study suggest that PM may be partially effective in preventing carcinogenesis initiated by environmental carcinogen DMBA. PMID:21996710

  1. Potential toxicological hazard due to endocrine-disrupting chemicals on Mediterranean top predators: State of art, gender differences and methodological tools

    SciTech Connect

    Fossi, M.C. [Department of Environmental Sciences, University of Siena, Via PA Mattioli 4, 53100 Siena (Italy)]. E-mail: fossi@unisi.it; Casini, S. [Department of Environmental Sciences, University of Siena, Via PA Mattioli 4, 53100 Siena (Italy); Marsili, L. [Department of Environmental Sciences, University of Siena, Via PA Mattioli 4, 53100 Siena (Italy)

    2007-05-15

    Man-made endocrine-disrupting chemicals (EDCs) range across all continents and oceans. Some geographic areas are potentially more threatened than others: one of these is the Mediterranean Sea. Levels of some xenobiotics are much higher here than in other seas and oceans. In this paper we review the final results of a project supported by the Italian Ministry of the Environment, in which the hypothesis that Mediterranean top predator species (such as large pelagic fish and marine mammals) are potentially at risk due to EDCs was investigated. We illustrate the need to develop and apply sensitive methodological tools, such as biomarkers (Vitellogenin, Zona Radiata proteins and CYP1A activities) for evaluation of toxicological risk in large pelagic fish top predators (Swordfish (Xiphias gladius), Bluefin Tuna (Thunnus thynnus thynnus)) and nondestructive biomarkers (CYP1A activities and fibroblast cell culture in skin biopsy), for the hazard assessment of threatened marine mammals species (Striped Dolphin, (Stenella coeruleoalba), Bottlenose Dolphin (Tursiops truncatus), Common Dolphin (Delphinus delphis) and Fin Whale (Balaenoptera physalus))exposed to EDCs. Differential gender susceptibility to EDCs is also explored both in large pelagic fish and in cetaceans. In cetaceans, male specimens showed higher cytochrome P450 induction (BPMO in skyn biopsies, CYP2B in fibroblasts cell cultures) by xenobiotics with respect to females.

  2. Feeding in billfishes: inferring the role of the rostrum from a biomechanical standpoint.

    PubMed

    Habegger, Maria L; Dean, Mason N; Dunlop, John W C; Mullins, Gray; Stokes, Michael; Huber, Daniel R; Winters, Daniel; Motta, Philip J

    2015-03-01

    Perhaps the most striking feature of billfishes is the extreme elongation of the premaxillary bones forming their rostra. Surprisingly, the exact role of this structure in feeding is still controversial. The goal of this study is to investigate the use of the rostrum from a functional, biomechanical and morphological standpoint to ultimately infer its possible role during feeding. Using beam theory, experimental and theoretical loading tests were performed on the rostra from two morphologically different billfish, the blue marlin (Makaira nigricans) and the swordfish (Xiphias gladius). Two loading regimes were applied (dorsoventral and lateral) to simulate possible striking behaviors. Histological samples and material properties of the rostra were obtained along their lengths to further characterize structure and mechanical performance. Intraspecific results show similar stress distributions for most regions of the rostra, suggesting that this structure may be designed to withstand continuous loadings with no particular region of stress concentration. Although material stiffness increased distally, flexural stiffness increased proximally owing to higher second moment of area. The blue marlin rostrum was stiffer and resisted considerably higher loads for both loading planes compared with that of the swordfish. However, when a continuous load along the rostrum was considered, simulating the rostrum swinging through the water, swordfish exhibited lower stress and drag during lateral loading. Our combined results suggest that the swordfish rostrum is suited for lateral swiping to incapacitate their prey, whereas the blue marlin rostrum is better suited to strike prey from a wider variety of directions. PMID:25617457

  3. Ammonium excretion in two benthic cnidarians: Alcyonium digitatum (Linnaeus, 1758) and Urticina felina (Linnaeus, 1767)

    NASA Astrophysics Data System (ADS)

    Migné, A.; Davoult, D.

    1997-05-01

    As part of an evaluation of nitrogen fluxes between the water column and a macrobenthic community of the Strait of Dover (eastern English Channel), ammonium excretion was measured throughout the year in two common cnidarians (the octocoral Alcyonium digitatum and the sea anemone Urticina felina) which together accounted for 37% of the biomass. Mean ammonium excretion rates were 6.48 (±2.44 s.d.) ?g N g -1 h -1 (ash-free dry weight) for A. digitatum and 4.12 (±l.38 s.d.) ?g N g -1 h -1 for U. felina. Seasonal variations were observed in the excretion of A. digitatum, whereas such variations were less pronounced in U. felina. These trends are discussed in relation to temperature, food availability, nutritional state and nutritional habits of the two species. The results of this and a previous study indicate a nitrogen production of 18.9 g N m -2 y -1 for the entire benthic community.

  4. Distribution and habitat associations of billfish and swordfish larvae across mesoscale features in the Gulf of Mexico.

    PubMed

    Rooker, Jay R; Simms, Jeff R; Wells, R J David; Holt, Scott A; Holt, G Joan; Graves, John E; Furey, Nathan B

    2012-01-01

    Ichthyoplankton surveys were conducted in surface waters of the northern Gulf of Mexico (NGoM) over a three-year period (2006-2008) to determine the relative value of this region as early life habitat of sailfish (Istiophorus platypterus), blue marlin (Makaira nigricans), white marlin (Kajikia albida), and swordfish (Xiphias gladius). Sailfish were the dominant billfish collected in summer surveys, and larvae were present at 37.5% of the stations sampled. Blue marlin and white marlin larvae were present at 25.0% and 4.6% of the stations sampled, respectively, while swordfish occurred at 17.2% of the stations. Areas of peak production were detected and maximum density estimates for sailfish (22.09 larvae 1000 m(-2)) were significantly higher than the three other species: blue marlin (9.62 larvae 1000 m(-2)), white marlin (5.44 larvae 1000 m(-2)), and swordfish (4.67 larvae 1000 m(-2)). The distribution and abundance of billfish and swordfish larvae varied spatially and temporally, and several environmental variables (sea surface temperature, salinity, sea surface height, distance to the Loop Current, current velocity, water depth, and Sargassum biomass) were deemed to be influential variables in generalized additive models (GAMs). Mesoscale features in the NGoM affected the distribution and abundance of billfish and swordfish larvae, with densities typically higher in frontal zones or areas proximal to the Loop Current. Habitat suitability of all four species was strongly linked to physicochemical attributes of the water masses they inhabited, and observed abundance was higher in slope waters with lower sea surface temperature and higher salinity. Our results highlight the value of the NGoM as early life habitat of billfishes and swordfish, and represent valuable baseline data for evaluating anthropogenic effects (i.e., Deepwater Horizon oil spill) on the Atlantic billfish and swordfish populations. PMID:22509277

  5. Introduction The skink Lacerta aurata was described by Linnaeus

    E-print Network

    of Natural History, Stockholm and the Museum of Evolution, Uppsala University, Uppsala are available with the individuals from Armenia, Azerbaijan [Nakhicevan], central and northern Iran and Turkmenistan) (for details into four genera and restricted the application of the name Mabuya to the South American clade

  6. INTRODUCTION The waggle dances of honeybees, Apis mellifera Linnaeus,

    E-print Network

    Towne, William F.

    that honeybees learn the relationship between the sun's pattern of azimuthal movement (the solar ephemeris) site directly SUMMARY Honeybees learn the spatial relationship between the sun's pattern of movement, such that directly upward on the comb represents the sun's azimuth in the field. Thus, one can infer a bee's estimate

  7. Recursively invoking Linnaeus: A Taxonomy for Naming Systems

    E-print Network

    Sollins, Karen R.

    2002-03-01

    Naming is a central element of a distributed or network system design. Appropriate design choices are central. This paper explores a taxonomy of naming systems, and engineering tradeoffs as an aid to the namespace designer. ...

  8. Polycyclic aromatic hydrocarbons in clams Ruditapes decussatus (Linnaeus, 1758).

    PubMed

    Barreira, Luísa A; Mudge, Stephen M; Bebianno, Maria J

    2007-02-01

    The concentration of sixteen individual polycyclic aromatic hydrocarbons (PAHs) was measured in the clam Ruditapes decussatus whole soft tissues from several places of the Ria Formosa lagoon (Portugal). Total PAH (tPAH) concentrations were higher in the summer (August) and winter (January) than in the other months and the distribution pattern of the individual PAHs was generally dominated by the 4 aromatic ring PAHs, followed by the 2 + 3 aromatic rings PAHs. Benzo[a]anthracene and acenaphthene were the most representative PAHs of the two fractions. Principal components analysis (PCA) revealed that, in the Ria Formosa, seasonal variations are more important than spatial variations, due to changes in PAH source. These sources ranged from petrogenic to pyrolytic or a mixture of both. The origin of clam PAHs was also assessed by partial least squares (PLS) analysis using nineteen different PAH signatures, taken from the literature. It was possible to identify boat traffic, especially in the summer, as one of the most relevant PAH sources to the Ria Formosa. The influence of boat traffic was revealed by several signatures including diesel soot, oil and weathered oil and a mixture of different individual PAHs usually found in harbour sediments. Other relevant sources included combustion of organic matter such as forest fires and diverse domestic activities, occurring mainly in the summer. Most of the clams were considered safe for human consumption, except for some point samples, which presented unusually high PAH concentrations, suggesting the need for a regular survey of PAHs in clam tissues. PMID:17285162

  9. The cutlassfish, Trichiurus lepturus Linnaeus 1758, occurs throughout trop-

    E-print Network

    , the Yellow Sea, the East China Sea, and the South China Sea (Jiang et al., 1991), and about 15% of the catch on northern pop- ulations in the East China Sea, the Yellow Sea, and the Bo Hai. Similar work on populations (Wang et al., 1992, 1993, 1994). Populations of T. lepturus in the Bo Hai, the Yellow Sea, and the East

  10. [Digenea of Haliaeetus albicilla (Linnaeus, 1758) and Pandion haliaetus (Linnaeus, 1758) from middle and north-western Poland].

    PubMed

    Kalisi?ska, Elzbieta; Rzad, Izabella; Sitko, Jilji; Kavetska, Katarzyna M; Królaczyk, Katarzyna; Budis, Halina

    2008-01-01

    In 2003-2008 eight white-tailed eagles and two ospreys from middle and north-western Poland were examined for the presence of parasites. Nine birds were infected with 5 digenean species: Conodiplostomum perlatum, Paracoenogonimus ovatus, Strigeafalconis, Metorchis crassiusculus and Nematostrigea serpens. M. crassiusculus was found for the first time in an eagle from Poland. PMID:19338229

  11. Conditional outcomes in a neotropical treehopper-ant association: temporal and species-specific variation in ant protection and homopteran fecundity

    Microsoft Academic Search

    Kleber Del-Claro; Paulo S. Oliveira

    2000-01-01

    We studied the association between the honeydew-producing membracid Guayaquila xiphias and its tending ants in the cerrado savanna of Brazil, during 1992 and 1993. Results showed that ants attack potential enemies\\u000a of G. xiphias, and that increased ant density near the treehoppers affects the spatial distribution of parasitoid wasps on the host plant,\\u000a keeping them away from brood-guarding G. xiphias

  12. Propulsion efficiency and cost of transport for copepods: a hydromechanical model of crustacean swimming

    Microsoft Academic Search

    M. J. Morris; G. Gust; J. J. Torres

    1985-01-01

    In the absence of direct measurement, costs of locomotion to small swimming Crustacea (Pleuromamma xiphias (Calanoida) was analyzed by extrapolating model parameters from data available in the literature. The model predictions agree well with empirical observations reported for larger crustaceans, in that swimming for copepods is relatively costly. The ratio of active to standard metabolism for P. xiphias was >3.

  13. THE SUBFAMILY CRIOCERINAE OF TURKEY (COLEOPTERA: CHRYSOMELIDAE) WITH TWO NEW RECORDS AND ZOOGEOGRAPHICAL REMARKS

    Microsoft Academic Search

    Hüseyin Özdikmen; Semra Turgut

    Eleven species of 4 genera of the subfamily Criocerinae, Lilioceris faldermanni (Guerin, 1829); Lilioceris lilii (Scopoli, 1763); Lilioceris merdigera (Linnaeus, 1758); Crioceris asparagi (Linnaeus, 1758), Crioceris bicruciata (Sahlberg, 1823), Crioceris duodecimpunctata (Linnaeus, 1758), Crioceris paracenthesis (Linnaeus, 1767); Crioceris quatuordecimpunctata (Scopoli, 1763); Lema cyanella (Linnaeus, 1758); Oulema gallaeciana (Heyden, 1870) and Oulema melanopus (Linnaeus, 1758), have been recorded for Turkey. Crioceris

  14. COMPARISON OF CHITIN STRUCTURES DERIVED FROM THREE COMMON WASP SPECIES (Vespa crabro LINNAEUS, 1758, Vespa orientalis LINNAEUS, 1771 and Vespula germanica (FABRICIUS, 1793)).

    PubMed

    Kaya, Murat; Ba?r?aç?k, Nil; Seyyar, Osman; Baran, Talat

    2015-08-01

    There has been no study on the chitin structure of wasp species. Here, we selected the three most common wasp species belonging to the family Vespidae for chitin extraction and characterization. Chitin was isolated from each wasp species and characterized by Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA), X-ray diffractometry (XRD), elemental analysis (EA), and scanning electron microscopy (SEM). The chitin contents of Vespa crabro, Vespa orientalis, and Vespula germanica were 8.3, 6.4, and 11.9%, respectively. The crystalline index (CrI) values for the chitin extracted from each species were 69.88, 53.92, and 50%, respectively. The most important finding of the study is that although the same method was used to extract chitin from each of the three wasp species, the degree of acetylation was different: for V. crabro and V. orientalis it was 96.85 and 99.82% (the chitin was extremely pure), respectively, whereas that for V. germanica the chitin was 79.83%. PMID:25850818

  15. The vertical distribution of black drum (Pogonias cromis Linnaeus) and striped mullet (Mugil cephalus Linnaeus) in a power plant effluent subject to gas supersaturation 

    E-print Network

    Waldrop, Robert Rush

    1982-01-01

    of water at the H20 observed temperature. Since orgon comprises only a small percent of the nitrogen and argon saturation value, this value will hereafter be re- ferred to only as percent nitrogen saturation. All hydrological variables collected were...

  16. Evidence for an autumn downstream migration of Atlantic salmon Salmo salar (Linnaeus) and brown trout Salmo trutta (Linnaeus) parr to the Baltic Sea

    NASA Astrophysics Data System (ADS)

    Taal, Imre; Kesler, Martin; Saks, Lauri; Rohtla, Mehis; Verliin, Aare; Svirgsden, Roland; Jürgens, Kristiina; Vetemaa, Markus; Saat, Toomas

    2014-06-01

    In the eastern Baltic rivers, anadromous salmonid parr are known to smoltify and migrate to the sea from March until June, depending on latitude, climate and hydrological conditions. In this study, we present the first records of autumn descent of brown trout Salmo trutta and Atlantic salmon Salmo salar from the Baltic Sea Basin. Otolith microchemistry analyses revealed that these individuals hatched in freshwater and had migrated to the brackish water shortly prior to capture. The fish were collected in 2006, 2008, 2009 and 2013 from Eru Bay (surface salinity 4.5-6.5 ‰), Gulf of Finland. This relatively wide temporal range of observations indicates that the autumn descent of anadromous salmonids is not a random event. These results imply that autumn descent needs more consideration in the context of the effective stock management, assessment and restoration of Baltic salmonid populations and their habitats.

  17. FRATINO CHARADRIUS ALEXANDRINUS LINNAEUS, 1758, FRATICELLO STERNA ALBIFRONS PALLAS, 1794 E GRUCCIONE MEROPS APIASTER LINNAEUS, 1758 NIDIFICANTI LUNGO I LITORALI DEL COMUNE DI VENEZIA: AGGIORNAMENTO AL 2005

    Microsoft Academic Search

    FRANCESCO SCARTON; MARCO BALDIN; MARIO SCATTOLIN

    Kentish Plovers, Little Terns and Bee-eaters nesting along the Lido and Pellestrina islands: years 2003-2005. During 2003 and 2005 monthly surveys of Kentish Plover Charadrius alexandrinus, Little Terns Sterna albifrons and Bee-eater Merops apiaster nesting pairs have been carried out along the beaches of Lido and Pellestrina (Venice, Italy). The results show that Little Tern have disappeared as a breeding

  18. GREEN CRAB (CARCINUS MAENAS LINNAEUS) CONSUMPTION RATES ON AND PREY PREFERENCES AMONG FOUR BIVALVE PREY SPECIES

    EPA Science Inventory

    The European green crab, Carcinus maenas, is a recent invader to Pacific Northwest (PNW) estuaries with a voracious appetite, especially for bivalves. To assess their potential impact, we estimated green crab consumption rates on four PNW bivalve species, Yaquina oyster (Ostrea ...

  19. Effect of Temperature Change on Maximum Swimming Speed of Whiting, Merlangius merlangus (Linnaeus, 1758)

    Microsoft Academic Search

    Seasonal changes in sea temperature levels affect the swimming performance of fish. This study investigates if a change of 5¡C from 7 to 12¡C in water temperature has a significant effect on the maximum swimming performance of whiting, Merlangius merlangus, which is one of the most common species caught in the bottom trawl fisheries of the North Sea. The effect

  20. Effect of Artificial Diets on Growth, Survival and Condition of Adult Cuttlefish, Sepia officinalis Linnaeus, 1758

    Microsoft Academic Search

    Pedro M. Domingues; Paul F. Dimarco; Jose P. Andrade; Phillip G. Lee

    2005-01-01

    The effects of artificial diets on growth and body condition of adult cuttlefish, Sepia officinalis were tested in two experiments. Supplemented prepared diets (fish myofibrillar protein concentrate) were fed during a 30-day and a 21-day experiments. Growth, feeding rate and food conversion of group-reared cuttlefish were analyzed. The first of these experiments tested four artificial diets, made with increasing levels

  1. An experimental demonstration of the life cycle of a Diplostomulum from Lampetra fluviatilis Linnaeus, 1758

    Microsoft Academic Search

    Roger Sweeting; John Cass

    1976-01-01

    Summary Metacercariae are recorded from the central nervous system of Lampetra fluviatilis in a British river. They are compared with metacercariae of Diplostomum phoxini, D. gasterostei, D. spathaceum and with measurements of Diplostomulum petromyzi-fluviatilis described by Gintovt (1969) from Lampetra planeri (Table 1). Other stages in the life-cycle of this diplostomulum were obtained experimentally; adults from immunosuppressed ducks (Anas platyrhynchus)

  2. Evolutionary Divergence of Geographic Subspecies within the Scalloped Spiny Lobster Panulirus homarus (Linnaeus 1758)

    PubMed Central

    Lavery, Shane D.; Farhadi, Ahmad; Farahmand, Hamid; Chan, Tin-Yam; Azhdehakoshpour, Ashkan; Thakur, Vibhavari; Jeffs, Andrew G.

    2014-01-01

    Panulirus homarus is an economically important spiny lobster that is widespread through the Indo-West Pacific Region, but has an uncertain taxonomic status, with three or four geographic subspecies having been described. This study used mitochondrial (16S, COI and control region) and nuclear (18S, ITS-1) DNA sequences to examine specimens of all putative subspecies and forms from throughout their range, in order to determine their genetic validity, and understand the evolutionary history of this species. Despite the range of diversity present in the loci examined, the results were consistent across genes. P. h. rubellus from the SW Indian Ocean comprised the most divergent lineage that was reciprocally monophyletic with respect to all other P. homarus (approx. 9% divergence in COI), and has likely evolved reproductive barriers. The putative P. h. “Brown” subspecies from the Marquesas Is in the central Pacific also comprised a somewhat divergent monophyletic lineage (approx. 3% in COI), but may simply be an allopatric population. The widespread P. h. homarus was not diverged at all from the described P. h. megasculpta from the NW Indian Ocean. The degree of evolutionary divergence of populations at the extremes distribution of the species is somewhat surprising, given the long pelagic larval stage, but suggests that allopatric speciation has been an important driver in the evolution of the genus. PMID:24892781

  3. Effect of dietary inulin and oligosaccharides as prebiotics for weaning turbot, Psetta maxima (Linnaeus, C. 1758)

    Microsoft Academic Search

    A. S. Mahious; F. J. Gatesoupe; M. Hervi; R. Metailler; F. Ollevier

    2006-01-01

    Preliminary experiments were undertaken to investigate the effect of dietary inulin (Raftiline  ST), oligofructose (Raftilose  P95) and lactosucrose on the growth and intestinal bacteria of the marine carnivorous turbot, Psetta maxima. Turbot larvae were weaned on compound diets containing 2% Rafiline  ST, 2% Raftilose P95 or 2% lactosucrose; 2% cellulose was the carbon source in the control group. The final

  4. Cytological steps during spermiogenesis in the house sparrow (Passer domesticus, Linnaeus).

    PubMed

    Góes, R M; Dolder, H

    2002-08-01

    Spermiogenesis of the domestic sparrow was investigated with the light and electron microscopes and a step by step classification is proposed. Three cell populations corresponding to early, mid and late spermatids were easily divided according to their positions in the seminiferous epithelium. In addition to this initial separation, six steps were recognized, based on nuclear morphology and the degree of chromatin condensation, in association to their acrosomal and flagellar development. Early spermiogenesis is the period previous to chromatin condensation. The first step can be recognized by the extending flagellum and the second by the pro-acrosome development in contact with the nucleus. During the third or intermediate step, chromatin condenses and the cell becomes polarized with the pro-acrosomic vesicle and the tail occupying opposite sides of the nucleus. Late spermiogenesis, including steps IV-VI, is marked by complete chromatin condensation. The final cellular modifications lead to the formation of a spiraled spermatozoon. This shape is due to the twisting of the acrosome and nucleus, as well as the helical arrangement of mitochondria around the axoneme along most of the flagellum, making an exceptionally long middle piece. PMID:12176310

  5. Assessing camera traps for surveying the European mink, Mustela lutreola (Linnaeus, 1761), distribution

    Microsoft Academic Search

    J. González-Esteban; I. Villate; I. Irizar

    2004-01-01

    This study assesses the suitability of camera trapping as a method for detecting the European mink and determining its distribution in a region located in southwestern Europe. Using this technique, 98 river stretches were surveyed, resulting in the detection of 11 species of carnivores. A high photographic rate was obtained for the European mink, and we were able to get

  6. Normal sonographic anatomy of the abdomen of coatis (Nasua nasua Linnaeus 1766)

    PubMed Central

    2013-01-01

    Background The use of ultrasound in veterinary medicine is widespread as a diagnostic supplement in the clinical routine of small animals, but there are few reports in wild animals. The objective of this study was to describe the anatomy, topography and abdominal sonographic features of coatis. Results The urinary bladder wall measured 0.11?±?0.03 cm. The symmetrical kidneys were in the left and right cranial quadrant of the abdomen and the cortical, medullary and renal pelvis regions were recognized and in all sections. The medullary rim sign was visualized in the left kidney of two coatis. The liver had homogeneous texture and was in the cranial abdomen under the rib cage. The gallbladder, rounded and filled with anechoic content was visualized in all coatis, to the right of the midline. The spleen was identified in the left cranial abdomen following the greater curvature of the stomach. The parenchyma was homogeneous and hyperechogenic compared to the liver and kidney cortex. The stomach was in the cranial abdomen, limited cranially by the liver and caudo-laterally by the spleen. The left adrenal glands of five coatis were seen in the cranial pole of the left kidney showing hypoechogenic parenchyma without distinction of cortex and medulla. The pancreas was visualized in only two coatis. The left ovary (0.92 cm x 0.56 cm) was visualized on a single coati in the caudal pole of the kidney. The uterus, right adrenal, right ovary and intestines were not visualized. Conclusions Ultrasound examination of the abdomen of coatis may be accomplished by following the recommendations for dogs and cats. It is possible to evaluate the anatomical and topographical relationships of the abdominal organs together with the knowledge of the peculiarities of parenchymal echogenicity and echotexture of the viscera. PMID:23800301

  7. Die orbitotemporale Region im Schädel von Chelydra serpentina Linnaeus (Chelonia) und Lacerta sicula Rafinesque (Lacertilia)

    Microsoft Academic Search

    Olivier Rieppel

    1976-01-01

    An analysis of the ontogenesis of the chondrocran¡um gives the following homologies in the skull of Lacerta and Chelydra: Chelydra Lacerta Pila metoptica subiculum infundibuli cartilago hypochiasmatica Pila antotica pila antotica pila accessoriaDorsal border of planum supraseptale part of the taenia marginalis closing the fenestra epioptica dorsally Caudal process of the pila antotica dorsal to the incisura prootica part of

  8. Absorption and metabolism of carbaryl, malathion, DDT, aldrin and permethrin by larvae of Aedes Aegypti (Linnaeus

    E-print Network

    Martinez, Alberto

    1977-01-01

    evidence that they occur in houseflies (Smith 1962, Terriere 1961). Glucoside Formation This is a general mechanism of detoxification in insects for com- pounds containing a phenolic group. This type of conjugations have been observed in different... (Matsumura 1975, Berenbom and Young 1950). In insects, conjugated products have not been determined; neverthe- less, the presence of glucoronide and sulfate conjugates has been indi- cated in houseflies (Terriere 1961). As far as absorption is concerned...

  9. Olfactory sensilla of the antennal flagellum of the horn fly, Haematobia irritans, (Linnaeus) (Diptera: Muscidae) 

    E-print Network

    White, Sandy Lee

    1978-01-01

    ; and (4) surface grooved sensi lie. In addition, 1 ventral and 3 dorsal pits are populated with sunken multiporous thin-walled sensflla and sunken grooved sensilla. Numerous depressions at the base of the ventral surface possess multi- porous clavate...111 14 OBSERVATIONS AND DISCUSSIONS Multiporous Thick-walled Surface Sensilla Surface Multi porous Thin-walled Sensi lla . Surface Grooved Sensilla . Olfactory Pits SUMMARY LITERATURE CITED APPENDIX VITA 15 18 21 30 33 43 46 51 54...

  10. Helminth fauna of the red fox (Vulpes vulpes Linnaeus, 1758) in southern Belarus

    Microsoft Academic Search

    V. Shimalov

    2002-01-01

    We examined 94 carcasses of and 1,213 faecal samples from red foxes collected between 1981 and 2001 in natural and transformed ecosystems in the southern part of Belarus. A total of 32 helminth species were found. Of these, the most common were Alaria alata, Pearsonema plica, Taenia crassiceps, Toxocara canis, Trichinella spp. larvae and Uncinaria stenocephala. All species are significant

  11. Biomineralization markers during early shell formation in the European abalone Haliotis tuberculata , Linnaeus

    Microsoft Academic Search

    Béatrice Gaume; Martine Fouchereau-Peron; Aïcha Badou; Marie-Noëlle Helléouet; Sylvain Huchette; Stéphanie Auzoux-Bordenave

    2011-01-01

    Larval shell formation was investigated in the European abalone Haliotis tuberculata. Stages of mineralization as well as enzymatic and endocrine biomarkers were monitored throughout larval development, from\\u000a hatching to post-larval stages. Polarized light microscopy and infrared spectroscopy analyses revealed the presence of crystallized\\u000a calcium carbonate arranged in aragonite polymorphs from the late trochophore stage. A correlation between the main steps

  12. Ammonia toxicity and its effect on the growth of the South African abalone Haliotis midae Linnaeus

    Microsoft Academic Search

    Kasturi Reddy-Lopata; Lutz Auerswald; Peter Cook

    2006-01-01

    The current study investigated acute toxicity to ammonia of the South African abalone, Haliotis midae, from three size classes relevant to mariculture operations, and the chronic impact of sub-lethal ammonia levels on growth of juvenile abalone.Results showed that tolerance to ammonia (at pH 7.8 and Ta=15 °C) increases with body size (i.e. age) as indicated by 36 h LC50 values: juvenile abalone

  13. Food Preferences of the Common Tern, Sterna hirundo (Linnaeus, 1758) at the Densu Floodplains, Accra

    Microsoft Academic Search

    Angela M. Ahulu; F. K. E. Nunoo; E. H. Owusu

    Seabirds are important in the dynamics of marine ecosystems because they recycle important biomass of lower trophic level organisms. Their faeces and carcasses provide important food sources for terrestrial and benthic scavengers. As a result of the abundance of food resources along the coast of Ghana, common terns (Sterna hirundo) are found in large numbers in productive brackish or saltwater

  14. When selection deceives phylogeographic interpretation: The case of the Mediterranean house gecko, Hemidactylus turcicus (Linnaeus, 1758)

    E-print Network

    Carranza, Salvador

    When selection deceives phylogeographic interpretation: The case of the Mediterranean house gecko indicated that this gecko has a Middle-East origin, and that the current phylogeographic pattern of another gecko, Tarentola mauritanica. However, a recent study has revealed that the phylogeographic

  15. Telencephalon of the Lizard Gekko gecko (Linnaeus): Some Connections of the Cortex and Dorsal Ventricular Ridge

    Microsoft Academic Search

    Ann B. Butler

    1976-01-01

    Interhemispheric connections of the telencephalon in the lizard, Gekko, were studied with anterograde degeneration methods following lesions variously placed in the medial, dorsal, and lateral cortices and\\/or the dorsal ventricular ridge (DVR). After lesions involving dorsal cortex, the medial wall, and the DVR, the majority of degenerated fibers decussate in the hippocampal commissure and terminate in the septum, medial wall,

  16. Development of cardiovascular function in the marine gastropod Littorina obtusata (Linnaeus).

    PubMed

    Bitterli, Tabitha S; Rundle, Simon D; Spicer, John I

    2012-07-01

    The molluscan cardiovascular system typically incorporates a transient extracardiac structure, the larval heart, early in development, but the functional importance of this structure is unclear. We documented the ontogeny and regulatory ability of the larval heart in relation to two other circulatory structures, the true heart and the velum, in the intertidal gastropod Littorina obtusata. There was a mismatch between the appearance of the larval heart and the velum. Velar lobes appeared early in development (day 4), but the larval heart did not begin beating until day 13. The beating of the larval heart reached a maximum on day 17 and then decreased until the structure itself disappeared (day 24). The true heart began to beat on day 17. Its rate of beating increased as that of the larval heart decreased, possibly suggesting a gradual shift from a larval heart-driven to a true heart-driven circulation. The true heart was not sensitive to acutely declining P(O(2)) shortly after it began to beat, but increased in activity in response to acutely declining P(O(2)) by day 21. Larval heart responses were similar to those of the true heart, with early insensitivity to declining P(O(2)) (day 13) followed by a response by day 15. Increased velum-driven rotational activity under acutely declining P(O(2)) was greatest in early developmental stages. Together, these findings point to cardiovascular function in L. obtusata larvae being the result of a complex interaction between velum, larval and true heart activities, with the functions of the three structures coinciding but their relative importance changing throughout larval development. PMID:22675194

  17. Distribution of pigments in the shell of the gastropod Littorina obtusata (Linnaeus, 1758)

    Microsoft Academic Search

    E. V. Kozminsky; P. A. Lezin

    2007-01-01

    The patterns of pigment distribution in the shell of the gastropod Littorina obtusata were studied. It was determined that the background coloration of the periwinkle shell resulted from the coloration interaction\\u000a of the external and internal parts of the ostracum. The coloration of the latter can be monochromatic or twolayer. The external\\u000a and\\/or internal zones of the ostracum can be

  18. Haemocyte persistence after grafting for pearl production in Pinctada margaritifera (Linnaeus, 1758).

    PubMed

    Kishore, Pranesh; Southgate, Paul C

    2015-02-01

    The grafting process used for pearl production in pearl oysters triggers a significant haemocyte response which has an influence on the quality of pearls formed. One hundred and ten selected healthy adult Pinctada margaritifera were grafted for pearl production. Beginning two days after grafting, oysters were sacrificed regularly until the 48th day and the pearl-sacs of sampled oysters were sectioned for histological analysis. The level of haemocytes present in the pearl-sacs decreased overtime with the samples from day 2 showing the highest levels. Haemocyte levels also varied between samples from a particular day. The exact cause(s) of varying levels of haemocyte accumulation during pearl-sac development in P. margaritifera is not known. However, it is reasonable to assume that haemocyte production is positively related to the degree of damage caused to host oyster tissues during the grafting procedure. While haemocytes have an important wound healing role in pearl oysters, excessive haemocyte presence may be detrimental to maximizing pearl quality. PMID:25482059

  19. The Hindlimb Arterial Vessels in Lowland paca (Cuniculus paca, Linnaeus 1766).

    PubMed

    Leal, L M; de Freitas, H M G; Sasahara, T H C; Machado, M R F

    2014-11-01

    This study aims to describe the origin and distribution of the hindlimb arterial vessels. Five adult lowland pacas (Cuniculus paca) were used. Stained and diluted latex was injected, caudally to the aorta. After fixation in 10% paraformaldehyde for 72 h, we dissected to visualize and identify the vessels. It was found out that the vascularization of the hindlimb in lowland paca derives from the terminal branch of the abdominal aorta. The common iliac artery divides into external iliac and internal iliac. The external iliac artery emits the deep iliac circumflex artery, the pudendal epigastric trunk, the deep femoral artery; the femoral artery originates the saphenous artery, it bifurcates into cranial and caudal saphenous arteries. Immediately after the knee joint, the femoral artery is called popliteal artery, which divides into tibial cranial and tibial caudal arteries at the level of the crural inter-osseous space. The origin and distribution of arteries in the hindlimb of lowland paca resembles that in other wild rodents, as well as in the domestic mammals. PMID:25370292

  20. Macro-microscopical aspects of the buffalo (Bubalus bubalis Linnaeus, 1758) pineal gland

    Microsoft Academic Search

    Ana Flávia de Carvalho; Carlos Eduardo Ambrósio; Maria Angélica Miglino; Francisco Javier Hernandez Blazquez

    Gross and microscopical aspects of the buffalo pineal gland were described in seasonal parturition animals, since this gland is responsible for melatonin secretion which acts upon the hypothalamus-hypophysis reproductive axis feedback system. (Hafez, 1995). For the present study, 11 cross-bred buffaloes, predominantly of the Mediterranean breed, from the Pirassununga Campus - USP (University of São Paulo), were killed in different

  1. NOTES ON THE EMBRYONIC PERIOD OF THE PINFISH LAGODON RHOMBOIDES (LINNAEUS)

    EPA Science Inventory

    Adult pinfish, Lagodon rhomboides, were collected during September and October, 1974 and 1975. Following a minimum of one week holding period, females were initially injected with 200 IU human chorionic gonadotropin and injected with 400 IU every second day thereafter until matur...

  2. Cytological investigations and new chromosome number reports in yarrow (Achillea millefolium Linnaeus, 1753) accessions from Iran.

    PubMed

    Afshari, Fatemeh; Ebrahimi, Mohsen; Akbari, Mohammad; Farajpour, Mostafa

    2013-10-24

    In this study, a new chromosome number for Iranian yarrow (Achillea millefolium L.) accessions was reported. Cytological analyses on four Achillea millefolium accessions, indicated that two accessions were diploids (2n=2x=18) and two tetraploids (2n=4x=36). Cluster analysis based on chromosomal characteristics and karyotype asymmetry, categorized the four accessions separated into two groups. In terms of the Stebbins' system, the karyotype of diploid accessions grouped in 2A class. The average value of the total form percentage (TF%) in the group one (diploid accessions) and two (tetraploid accessions) were 40.85 and 41.15, respectively. The group one had the highest mean value for the symmetry index (S%=57.5). Consequently, it can be inferred that diploids belonging to the group one are the earlier evolutionary forms. PMID:24455101

  3. Fidelity to nesting area of the European pond turtle, Emys orbicularis (Linnaeus, 1758)

    Microsoft Academic Search

    Slawomir Mitrus

    During a 16-year study (1987-2002) in the Borowiec Nature Reserve (central Poland), 118 nest sites of the turtle Emys orbicularis were marked : 115 nest sites of 23 different known females and 3 nest sites of unknown females. For seven females, 8 to 12 nest sites per individual are known from the studied period. For ten other females, 3 to

  4. Population genetic analysis of Caiman crocodilus (Linnaeus, 1758) from South America

    E-print Network

    Hrbek, Tomas - Department of Biology, Universidad de Puerto Rico

    to adapt to dynamically changing environments that should be conserved (Smith et al., 1997; Smith et al., 2001). Therefore, molecular ecological studies can provide vital information for the conservation Argentina, including all major South American drainages. Caiman crocodilus (the spec- tacled caiman) can

  5. Hematology and plasma biochemistry of wild-caught Indian cobra Naja naja (Linnaeus, 1758)

    PubMed Central

    2014-01-01

    Background Hematology and plasma biochemistry parameters are useful in the assessment and management of snake physiological status. Although reference ranges are readily available for many snake species, they are lacking for most venomous ophidians. We determined hematology and plasma biochemistry reference ranges for the wild-caught Indian cobra, Naja naja. Results Blood samples, taken from the ventral tail vein, were assessed for erythrocyte count, total leukocyte count, hemoglobin concentration, hematocrit, mean corpuscular volume, mean corpuscular hemoglobin, and mean corpuscular hemoglobin concentration, considering the sex of snakes. Results revealed the erythrocyte numbers (male, 390000?±?12503.33/mm3 and female, 347500?±?7505.55/mm3), shapes and the centrally located oval nuclei. Leukocytes were round, circular or disk-shaped, and the mean size was larger in male than female snakes. The maximum number of leukocytes was found to be 11700?±?100/mm3 in male and 12100?±?200/mm3 in female snakes, and mean values of differential leukocyte count differed statistically between male and female snakes. The total leukocyte levels were found to be higher in female snakes, but the levels of hemoglobin, hematocrit, and MCV values were higher in male snakes. However, the MCH and MCHC values remained higher in female snakes throughout the study period. Mean protein and cholesterol contents differed significantly between male (45.32?±?1.76 and 3.76?±?0.06 mg/mL) and female (12.47?±?0.82 and 4.72?±?0.2 mg/mL) snakes. Conclusions In conclusion, monitoring snake hematological and biochemical parameters can serve as a means to evaluate the physiological and health status of N. naja populations, which may be a useful indicator of their environmental status. PMID:24735569

  6. The Efficacy of Passiflora Incarnata Linnaeus in Reducing Dental Anxiety in Patients Undergoing Periodontal Treatment

    PubMed Central

    Kaviani, N; Tavakoli, M; Tabanmehr, MR; Havaei, RA

    2013-01-01

    Statement of Problem: Oral premedication used to reduce the anxiety in patients undergoing dental treatment. Passion flower has been used as a sedative that can control the dental anxiety. Purpose: This study determines the efficacy of Passion flower, in reducing anxiety during the dental procedures. Material and Methods: In this randomized- one sided blind clinical trial, 63 patients, with moderate, high and severe anxiety(according to VAS score) in need of periodontal treatment were randomly divided into 3 groups of 21.The first group was given the drop Passion flower drop and the second group were given the drop of placebo and the third group; neither drug nor placebo were given (negative control group). Results were analyzed by Chi Square, Variance Analysis, Tucky and Paired-T using SPSS software. Results: Mean anxiety level prior to the drug administration was 12.09±2.42 for the Passion flower group, 12.00±2.66 for the placebo group and 11.66±2.39 for the negative control group. After premedication, these values were: 8.47±2.58 for the Passion flower group, 10.52±2.11 for the placebo group and 11.23±2.34 for the negative control group. These results demonstrated a significant difference (p< 0.0001) in the anxiety levels before and after the Passion flower administration in the Passion flower group and also between the Passion flower group and the other two groups. Conclusion: Results indicated that administration of Passion flower, as a premedication, is significantly effective in reducing the anxiety. Since this study is a pioneer on the subject, further trials with greater number of subjects are required to confirm our results. PMID:24724122

  7. The draft genome of the transgenic tropical fruit tree papaya (Carica papaya Linnaeus)

    Microsoft Academic Search

    Ray Ming; Shaobin Hou; Yun Feng; Qingyi Yu; Alexandre Dionne-Laporte; Jimmy H. Saw; Pavel Senin; Wei Wang; Benjamin V. Ly; Kanako L. T. Lewis; Lu Feng; Meghan R. Jones; Rachel L. Skelton; Jan E. Murray; Cuixia Chen; Wubin Qian; Junguo Shen; Peng Du; Moriah Eustice; Eric Tong; Haibao Tang; Eric Lyons; Robert E. Paull; Todd P. Michael; Kerr Wall; Danny W. Rice; Henrik Albert; Ming-Li Wang; Yun J. Zhu; Michael Schatz; Niranjan Nagarajan; Ricelle A. Acob; Peizhu Guan; Andrea Blas; Ching Man Wai; Christine M. Ackerman; Yan Ren; Chao Liu; Jianmei Wang; Jianping Wang; Jong-Kuk Na; Eugene V. Shakirov; Brian Haas; Jyothi Thimmapuram; David Nelson; Xiyin Wang; John E. Bowers; Andrea R. Gschwend; Arthur L. Delcher; Ratnesh Singh; Jon Y. Suzuki; Savarni Tripathi; Kabi Neupane; Hairong Wei; Beth Irikura; Maya Paidi; Ning Jiang; Wenli Zhang; Gernot Presting; Aaron Windsor; Rafael Navajas-Pérez; Manuel J. Torres; F. Alex Feltus; Brad Porter; Yingjun Li; A. Max Burroughs; Ming-Cheng Luo; Lei Liu; David A. Christopher; Stephen M. Mount; Paul H. Moore; Tak Sugimura; Jiming Jiang; Mary A. Schuler; Vikki Friedman; Thomas Mitchell-Olds; Dorothy E. Shippen; Claude W. Depamphilis; Jeffrey D. Palmer; Michael Freeling; Andrew H. Paterson; Dennis Gonsalves; Lei Wang; Maqsudul Alam

    2008-01-01

    Papaya, a fruit crop cultivated in tropical and subtropical regions, is known for its nutritional benefits and medicinal applications. Here we report a 3× draft genome sequence of `SunUp' papaya, the first commercial virus-resistant transgenic fruit tree to be sequenced. The papaya genome is three times the size of the Arabidopsis genome, but contains fewer genes, including significantly fewer disease-resistance

  8. Sexual dimorphisms in the dermal denticles of the lesser-spotted catshark, Scyliorhinus canicula (Linnaeus, 1758).

    PubMed

    Crooks, Neil; Babey, Lucy; Haddon, William J; Love, Adrian C; Waring, Colin P

    2013-01-01

    The dermal layers of several elasmobranch species have been shown to be sexually dimorphic. Generally, when this occurs the females have thicker dermal layers compared to those of males. This sexual dimorphism has been suggested to occur as a response to male biting during mating. Although male biting as a copulatory behaviour in Scyliorhinus canicula has been widely speculated to occur, only relatively recently has this behaviour been observed. Male S. canicula use their mouths to bite the female's pectoral and caudal fins as part of their pre-copulatory behaviour and to grasp females during copulation. Previous work has shown that female S. canicula have a thicker epidermis compared to that of males. The structure of the dermal denticles in females may also differ from that of males in order to protect against male biting or to provide a greater degree of friction in order to allow the male more purchase. This study reveals that the length, width and density of the dermal denticles of mature male and female S. canicula are sexually dimorphic across the integument in areas where males have been observed to bite and wrap themselves around females (pectoral fin, area posterior to the pectoral fin, caudal fin, and pelvic girdle). No significant differences in the dermal denticle dimensions were found in other body areas examined (head, dorsal skin and caudal peduncle). Sexually dimorphic dermal denticles in mature S. canicula could be a response to male biting/wrapping as part of the copulatory process. PMID:24116179

  9. Morphology of accessory genital glands of spotted paca (Agouti paca Linnaeus, 1766).

    PubMed

    Borges, Edson Moreira; Branco, Érika; de Lima, Ana Rita; Leal, Leonardo Martins; Martins, Leandro Luiz; Reis, Ana Carolina Gonçalves; Cruz, Claudinei; Machado, Márcia Rita Fernandes; Miglino, Maria Angelica

    2014-02-01

    The spotted paca is the second largest rodent in Brazil, where it is of great economic interest in impoverished regions in view of its prominence as a low-cost source of protein. Little is known about the morphology of the accessory genital glands of this species. Thus, we studied the position and morphology of the genitals in ten adult male spotted pacas. The animals were divided into two groups, five animals were used for fixing of samples in 10% aqueous formaldehyde for macroscopic studies and the other five animals were designated for microscopic analysis. These were arranged in pairs and had the vesicular, prostate, coagulating and bulbourethral glands identified, being structured as mucous glands, which lead into the pelvic urethra. It was concluded that the accessory genital glands found in the paca are the same as those found in most rodents, showing similar histological aspects. PMID:24461579

  10. Nanomechanical properties of wing membrane layers in the house cricket (Acheta domesticus Linnaeus).

    PubMed

    Sample, Caitlin S; Xu, Alan K; Swartz, Sharon M; Gibson, Lorna J

    2015-03-01

    Many insect wings change shape dynamically during the wingbeat cycle, and these deformations have the potential to confer energetic and aerodynamic benefits during flight. Due to the lack of musculature within the wing itself, the changing form of the wing is determined primarily by its passive response to inertial and aerodynamic forces. This response is in part controlled by the wing's mechanical properties, which vary across the membrane to produce regions of differing stiffness. Previous studies of wing mechanical properties have largely focused on surface or bulk measurements, but this ignores the layered nature of the wing. In our work, we investigated the mechanical properties of the wings of the house cricket (Acheta domesticus) with the aim of determining differences between layers within the wing. Nanoindentation was performed on both the surface and the interior layers of cross-sectioned samples of the wing to measure the Young's modulus and hardness of the outer- and innermost layers. The results demonstrate that the interior of the wing is stiffer than the surface, and both properties vary across the wing. PMID:25660065

  11. Nurse egg consumption and intracapsular development in the common whelk Buccinum undatum (Linnaeus 1758)

    NASA Astrophysics Data System (ADS)

    Smith, Kathryn E.; Thatje, Sven

    2013-03-01

    Intracapsular development is common in marine gastropods. In many species, embryos develop alongside nurse eggs, which provide nutrition during ontogeny. The common whelk Buccinum undatum is a commercially important North Atlantic shallow-water gastropod. Development is intracapsular in this species, with individuals hatching as crawling juveniles. While its reproductive cycle has been well documented, further work is necessary to provide a complete description of encapsulated development. Here, using B. undatum egg masses from the south coast of England intracapsular development at 6 °C is described. Number of eggs, veligers and juveniles per capsule are compared, and nurse egg partitioning, timing of nurse egg consumption and intracapsular size differences through development are discussed. Total development took between 133 and 140 days, over which 7 ontogenetic stages were identified. The number of both eggs and veligers were significantly related to capsule volume, with approximately 1 % of eggs developing per capsule. Each early veliger consumed nurse eggs rapidly over just 3-7 days. Within each capsule, initial development was asynchronous, but it became synchronous during the veliger stage. No evidence for cannibalism was found during development, but large size differences between embryos developing within each capsule were observed, and occasionally `empty' veligers were seen, which had not successfully consumed any nurse eggs. These results indicate a high level of competition for nurse eggs within each capsule during development in the common whelk. The initial differences observed in nurse egg uptake may affect individual predisposition in later life.

  12. [The helminth fauna of Emys orbicularis (european pond turtle) (Linnaeus, 1758) living in freshwater.].

    PubMed

    Yildirimhan, Hikmet Sami; Sah?n, Ramazan

    2005-01-01

    Twelve European pond turtles, Emys orbicularis, collected during 1996-2003 in various areas of the Bursa region were examined for helminths. During dissection, the following organs were surveyed for parasites: alimentary tract, lungs and urinary bladder. The 4 helminth species found were Patagium lazarewi (Digenea), Serpinema microcephalus, Spironoura armenica and Spiroxys contortus (Nematoda). This study that aimed at determining the helminth fauna of vertebrates in Turkey is the first survey on the host, Emys orbicularis. Also, this is the first time that Spiroxys contortus has been found among the helminth fauna of Turkey. PMID:17167746

  13. Mitochondrial phylogeography of the European pond turtle, Emys orbicularis (Linnaeus 1758).

    PubMed

    Lenk, P; Fritz, U; Joger, U; Wink, M

    1999-11-01

    The phylogeny and phylogeography of Emys orbicularis was inferred from mitochondrial nucleotide sequences of the cytochrome b gene analysed by DNA sequencing and RNA heteroduplex analysis. Within the family Emydidae the monotypic genus Emys is affiliated with the nearctic taxa Emydoidea blandingii and Clemmys marmorata. The analysis of 423 individuals of E. orbicularis, originating throughout its distribution range, revealed a remarkable intraspecific differentiation in 20 different haplotypes with distinct geographical ranges. Maximum parsimony analysis produced a star-like phylogeny with seven main lineages which may reflect separations in the late Pliocene. The haplotype distribution examined by partial Mantel tests and analysis of molecular variance revealed a substantial effect of glacial periods. This historical perspective suggests the existence of multiple glacial refugia and considerable Holocene range expansion which was modulated by climatic traits. Further support is gained for the occurrence of long-term parapatry in glacial refugia. PMID:10620234

  14. Cuticular Biominerals of the Terrestrial Crustacean Oniscus asellus (Isopoda, Linnaeus 1758)

    NASA Astrophysics Data System (ADS)

    Mergelsberg, S. T.; Mukhopadhyay, B.; Dove, P. M.

    2013-12-01

    Biomineralization is a phenomenon observed in many eukaryotic organisms and evidence suggests this process began relatively early in the evolution of multicellular life (Marin F et al. 1996). Crustaceans form a large fraction of all eukaryotic biomineralizers by incorporating calcium carbonate (CaCO3) into their cuticle. Terrestrial species are challenged in their production of CaCO3 by the absence of calcium-rich waters. To cope with this limitation, the terrestrial crustacean Oniscus asellus recycles up to 80% (Auzou G 1953) of its total calcium during the molting process. This feat is accomplished by separate molting of the front and back cuticle, with temporary storage of the calcium carbonate as amorphous calcium carbonate (ACC) in the front half (Ziegler A 1997). These processes infer a highly efficient and regulated mechanism for biomineralization that is most likely orchestrated by a myriad of proteins (Ziegler A et al. 2012). Until recently, investigations of biomineralization were largely directed toward understanding morphology and large-scale chemistry of the minerals, ignoring the mechanistic roles of biomacromolecules in mineralization processes. More recent work suggests a high involvement of these compounds on the formation of biominerals and, in some cases, the specific polymorphs thereof (Keene EC et al. 2010). This study focuses on identifying the components of the biological mineralization matrix at each stage of the process. Using chemical demineralization of the stored ACC, all biomacromolecules can be separated and purified for subsequent analysis by MALDI-TOF mass spectrometry. To link the localized biochemistry more intimately to the polymorph of calcium carbonate that forms in the animal, the inorganic phase (';the mineral') will be monitored at each life stage using XRD and TEM. This analysis will reveal the organic components of a very precise biomineralization mechanism and may shed insight on its evolutionary origin. References: Marin F, Westbroek P et al., 1996, Proc Nat Acad Sci 93:1554-1559 Auzou G, 1953, L Ann Sci Nat 15:71-98 Ziegler A, 1997, Zoomorphology 117:181-187 Ziegler A et al., 2012, Cryst Growth Des 12:646-655 Keene EC et al., 2010, Cryst Growth Des 10:1383-1389

  15. Cytogenetic response of Scots pine (Pinus sylvestris Linnaeus, 1753) (Pinaceae) to heavy metals

    PubMed Central

    Belousov, Mikhail Vladimirovich; Mashkina, Olga Sergeyevna; Popov, Vasily Nikolayevich

    2012-01-01

    Abstract We studied cytogenetic reactions of Scots pine seedlings to heavy metals – lead, cupric and zinc nitrates applied at concentrations 0.5 to 2000 µM. We determined the range of concentrations of heavy metals that causes mutagenic effect. Lead was found to cause the strongest genotoxicity as manifested by significant increase in the frequency of pathological mitosis, occurrence of fragmentations and agglutinations of chromosomes, various types of bridges, and a significant number of the micronuclei which were absent in the control. Possible cytogenetic mechanisms of the cytotoxic action of heavy metals are discussed. PMID:24260654

  16. Cornus mas (Linnaeus) Novel Devised Medicinal Preparations: Bactericidal Effect against Staphylococcus aureus and Pseudomonas aeruginosa.

    PubMed

    Kyriakopoulos, Anthony M; Dinda, Biswanath

    2015-01-01

    The medicinal properties of Cornus mas L. (=Cornus mascula L.), Cornaceae, are well described in Hippocratian documents, and recent research provides experimental evidence for some of these properties. However, the chemical components of Cornus mas L. that may be of pharmaceutical importance are relatively unstable. In this respect a novel methodology for plant nutrient element extraction that provides favorable conditions for simultaneous stabilization of such fragile and unstable structures has been devised. Using this methodology, medicinal preparations derived from Cornus mas L. fresh fruits, proved to possess significant antimicrobial activity selective against S. aureus and P. aeruginosa. This effect became apparent with the addition of sodium bromide in the extraction procedure and varied with the ion availability during extraction. The identification of novel agents with potent antimicrobial activity against these species is of medical importance to overcome the problem of universal antibiotic resistance. PMID:26091077

  17. Disseminated pulmonary adiaspiromycosis in a crested porcupine (Hystrix cristata Linnaeus, 1758).

    PubMed

    Morandi, Federico; Galuppi, Roberta; Buitrago, Maria J; Delogu, Mauro; Lowenstine, Linda J; Panarese, Serena; Benazzi, Cinzia; Sarli, Giuseppe

    2012-04-01

    Adiaspiromycosis is primarily a necrotizing granulomatous pneumonia caused by a dimorphic fungus of the genus Emmonsia. A young crested porcupine (Hystrix cristata) found dead showed multiple fractures, chronic pleuritis, and granulomatous pneumonia. Microscopically, cystic structures were consistent with adiaspiromycosis by Emmonsia crescens. The diagnosis was confirmed using molecular methods. PMID:22493137

  18. Detection of Rickettsia helvetica in ticks collected from European hedgehogs (Erinaceus europaeus, Linnaeus, 1758).

    PubMed

    Speck, Stephanie; Perseke, Lea; Petney, Trevor; Skuballa, Jasmin; Pfäffle, Miriam; Taraschewski, Horst; Bunnell, Toni; Essbauer, Sandra; Dobler, Gerhard

    2013-04-01

    The role of wild mammals in the dissemination and maintenance of Rickettsia in nature is still under investigation. European hedgehogs (Erinaceus europaeus) are often heavily infested by tick and flea species that are known to harbor and transmit different Rickettsia spp. We investigated ixodid ticks sampled from European hedgehogs for the presence of Rickettsia. A total of 471 Ixodes ricinus and 755 I. hexagonus were collected from 26 German and 7 British European hedgehogs. These were tested by a genus-specific real-time PCR assay targeting the citrate synthase gene (gltA). The rickettsia minimum infection rate was 11.7% with an increase detected with each parasitic tick stage. No significant difference in Rickettsia prevalence in the 2 Ixodes species was detected. Using sequencing of partial ompB, Rickettsia helvetica was the only species identified. More than half of the hedgehogs carried Rickettsia-positive ticks. In addition, tissue samples from 2/5 hedgehogs (where tissue DNA was available) were PCR-positive. These results show that European hedgehogs are exposed to R. helvetica via infected ticks and might be involved in the natural transmission cycle of this Rickettsia species. PMID:23337491

  19. Hibiscus sabdariffa Linnaeus (Malvaceae), curcumin and resveratrol as alternative medicinal agents against metabolic syndrome.

    PubMed

    Pérez-Torres, Israel; Ruiz-Ramírez, Angélica; Baños, Guadalupe; El-Hafidi, Mohammed

    2013-03-01

    Metabolic syndrome (MS) is an obesity-associated collection of disorders, each of which contributes to cardiovascular risk. For patients with MS, it is difficult to follow a diet/exercise regime that would improve their symptoms. Therefore, the investigation of agents that may deal with its more serious aspects is an important medical field for research. Numerous experimental studies have confirmed the important role of medicinal plants or their active components in the prevention and treatment, and in lowering risk factors of MS. As oxidative stress and inflammation are involved in the association between obesity, insulin resistance (IR) and hypertension, antioxidant and anti-inflammatory plant components like polyphenols might be useful as a treatment for MS. The aqueous extract of Hibiscus Sabdariffa L (HSE), rich in several polyphenols, is commonly and effectively used in native medicines against hypertension, diabetes and liver disorders. HSE has also shown therapeutic promise in the prevention of MS in patients, probably due to its polyphenol content. Curcumins, derived from the spice turmeric, and resveratrol, polyphenols found in grapes and red wine respectively, in addition to their antioxidant and anti-inflammatory properties, inhibit preadipocyte proliferation, de novo lipogenesis and fat accumulation in liver. Thus, due to their efficacy in the regulation of multiple targets, polyphenols have received considerable interest as potential therapeutic agents for the prevention and treatment of MS. This review discusses the therapeutic use of HSE, as well as curcumin and resveratrol, in the context of obesity as an initiator of insulin resistance and hypertension, the two main features of MS, together with the underlying mechanisms of action. PMID:22721439

  20. Sublethal effect of copper toxicity against histopathological changes in the spiny lobster, Panulirus homarus (Linnaeus, 1758).

    PubMed

    Maharajan, A; Rajalakshmi, S; Vijayakumaran, M; Kumarasamy, P

    2012-02-01

    The tissue damage induced by various organic pollutants in aquatic animals is well documented, but there is a dearth of information relating to the histological alterations induced by copper in the spiny lobster. In the present study, intermoult juveniles of the spiny lobster Panulirus homarus (average weight 150-200 g) were exposed to two sublethal concentrations of the copper (9.55 and 19.1 ?g/l) for a period of 28 days. The muscle, hepatopancreas, midgut, gills, thoracic ganglion and heart of the lobsters were then dissected out and processed for light microscopic studies. Exposure to copper was found to result in several alterations in the histoarchitecture of the muscle, hepatopancreas, midgut, gills, thoracic ganglion and heart of P. homarus. The alterations included disruption and congestion of muscle bundle in muscle tissue; blackened haemocytes; distended lumen and F cell; necrosis of the tubules of the hepatopancreas; disarrangement of circular muscle of the midgut; accumulation of haemocytes in the haemocoelic space; swelling and fusion of lamellae; abnormal gill tips; hyperplastic, necrotic, and blackened secondary gill lamellae of the gills; damaged neurosecretory cell and sensory and motor fibre; necrotic of the thoracic ganglion; dispersedly arranged muscle bands; clumped satellite cells and nucleus of the heart. The results obtained suggest that the muscle, hepatopancreas, midgut, gills, thoracic ganglion and heart of lobsters exposed to copper were structurally altered. Such alterations could affect vital physiological functions, such as absorption, storage and secretion of the hepatopancreas, digestion of gut and respiration, osmotic and ionic regulations of the gills, which in turn could ultimately affect the survival and growth of P. homarus. Thus, all possible remedial measures should be adopted to prevent the occurrence of copper contamination in the aquatic environment. PMID:21861131

  1. Age, growth, reproduction, and food of the burbot, Lota lota (Linnaeus), in southwestern Lake Superior

    USGS Publications Warehouse

    Bailey, Merryll M.

    1972-01-01

    This study was based on 1,285 burbot (Lota lota) collected in three areas in southwestern Lake Superior in 1966-69. Age was determined from otoliths, the marginal zones of which were opaque from December to May and translucent from June to November. Average lengths of the age groups and annual increments were measured from a curve fitted by inspection to point estimates of lengths at capture. Burbot grew 5.7 inches during the first year of life and 4.3 inches during the second. Later annual increments through the twelfth year ranged from 1.2 to 2.6 inches. Average total lengths and calculated weights were 16.1 inches and 1.1 pounds at age V and 23.4 inches and 3.2 pounds at age X. First maturity was at age I, at a total length of 9.7 inches for males and 10.7 inches for females; all fish were mature at age V and at lengths greater than 16.4 inches (males) and 15.9 inches (females). Most burbot collected near shore in the Apostle Islands area in late January and February were spent, but none collected in offshore areas during January and March had spawned. The estimated number of eggs in the ovaries of eight burbot 14.7-21.3 inches long ranged from about 268,800 to 1,154,000 and averaged about 812,300. Burbot of all sizes fed on fish and crustaceans. Fish heavily predominated in the food of large burbot taken during the winter (99.6% of the volume) but crustaceans (Mysis and Pontoporeia) became increasingly important during the summer and fall (when they contributed more than 73% of the volume). Due to the wide variety and large volume of food consumed, the burbot is probably a significant competitor of many other species.

  2. Reduction of feral cat (Felis catus Linnaeus 1758) colony size following hysterectomy of adult female cats.

    PubMed

    Mendes-de-Almeida, Flavya; Remy, Gabriella L; Gershony, Liza C; Rodrigues, Daniela P; Chame, Marcia; Labarthe, Norma V

    2011-06-01

    The size of urban cat colonies is limited only by the availability of food and shelter; therefore, their population growth challenges all known population control programs. To test a new population control method, a free-roaming feral cat colony at the Zoological Park in the city of Rio de Janeiro was studied, beginning in 2001. The novel method consisted of performing a hysterectomy on all captured female cats over 6 months of age. To estimate the size of the colony and compare population from year to year, a method of capture-mark-release-recapture was used. The aim was to capture as many individuals as possible, including cats of all ages and gender to estimate numbers of cats in all population categories. Results indicated that the feral cat population remained constant from 2001 to 2004. From 2004 to 2008, the hysterectomy program and population estimates were performed every other year (2006 and 2008). The population was estimated to be 40 cats in 2004, 26 in 2006, and 17 cats in 2008. Although pathogens tend to infect more individuals as the population grows older and maintains natural behavior, these results show that free-roaming feral cat colonies could have their population controlled by a biannual program that focuses on hysterectomy of sexually active female cats. PMID:21440475

  3. Mitochondrial genome of the endangered marine gastropod Strombus gigas Linnaeus, 1758 (Mollusca: Gastropoda).

    PubMed

    Márquez, Edna J; Castro, Erick R; Alzate, Juan F

    2014-09-01

    Abstract The queen conch Strombus gigas is an endangered marine gastropod of significant economic importance across the Greater Caribbean region. This work reports for the first time the complete mitochondrial genome of S. gigas, obtained by FLX 454 pyrosequencing. The mtDNA genome encodes for 13 proteins, 22 tRNAs and 2 ribosomal RNAs. In addition, the coding sequences and gene synteny were similar to other previously reported mitogenomes of gastropods. PMID:25186797

  4. Adulticidal activity of some Malaysian plant extracts against Aedes aegypti Linnaeus.

    PubMed

    Hidayatulfathi, O; Sallehuddin, S; Ibrahim, J

    2004-12-01

    The adulticidal activity of methanol extracts from three Malaysian plants namely Acorus calamus Linn., Litsea elliptica Blume and Piper aduncum Linn. against adult of Aedes aegypti (L.) were studied. Standard WHO bioassay tests were used to evaluate the effectiveness of these plant extracts. The hexane fraction from methanol extract of Acorus calamus rhizome was the most effective, exhibiting LC50 and LC90 values of 0.04 mgcm(-2) and 0.09 mgcm(-2) respectively. For L. elliptica, the methanol fraction also displayed good adulticidal property with the LC50 and LC90 values of 0.11 mgcm(-2) and 6.08 mgcm(-2) respectively. It is found that hexane fraction of the P. aduncum crude extract was the least effective among the three plants showing LC50 and LC90 values of 0.20 mgcm(-2) and 5.32 mgcm(-2), respectively. However, although A. calamus showed lowest LC values, the LT50 results indicated that the methanol fraction of L. elliptica was most potent extract among the extracts tested. PMID:16493400

  5. Morphometric analysis of fetal development of Cavia porcellus (Linnaeus, 1758) by ultrasonography--pilot study.

    PubMed

    Santos, Juliana; Fonseca, Erika; van Melis, Juliano; Miglino, Maria Angélica

    2014-04-15

    Measurements on the growth process and placental development of the embryo and fetuses of Cavia porcellus were carried out using ultrasonography. Embryo, fetus, and placenta were monitored from Day 15 after mating day to the end of gestation. Based on linear and quadratic regressions, the following morphometric analysis showed a good indicator of the gestational age: placental diameter, biparietal diameter, renal length, and crown rump. The embryonic cardiac beat was first detected at an average of 22.5 days. The placental diameter showed constant increase from beginning of gestation then remained to term and presented a quadratic correlation with gestational age (r(2) = 0.89). Mean placental diameter at the end of pregnancy was 3.5 ± 0.23 cm. By Day 30, it was possible to measure biparietal diameter, which followed a linear pattern of increase up to the end of gestation (r(2) = 0.95). Mean biparietal diameter in the end of pregnancy was 1.94 ± 0.03 cm. Kidneys were firstly observed on Day 35 as hyperechoic structures without the distinction of medullar and cortical layers, thus the regression model equation between kidney length and gestational age presents a quadratic relationship (r(2) = 0.7). The crown rump presented a simple linear growth, starting from 15 days of gestation, displaying a high correlation with the gestational age (r(2) = 0.9). The offspring were born after an average gestation of 61.3 days. In this study, we conclude that biparietal diameter, placental diameter, and crown rump are adequate predictive parameters of gestational age in guinea pigs because they present high correlation index. PMID:24560548

  6. Reproduction and sexual dimorphism in a population of Virginia Striatula Linnaeus (Reptilia, Colubridae

    E-print Network

    Clark, Donald Ray

    1964-01-01

    OF TABLES Parcae 1. Per cent of individuals less than 100 mm in body length in monthly samples. 13 2. Comparison of sclae counts and measurement data fo t h*od of ~V' t ' tl 'thf* 1* parents. 18 3. Counts of mature ovarian follicles, oviductal eggs... length in a sample Pa&ac of male Virginia striatula. 54 2. Relationship of testis length to body length in pl*of 1*~V' ' ' ~ *t ' tl . . . . . . . . . . . . . . 55 3. Presence of large ovarian follicles, oviductal eggs or embryos, or sperm...

  7. Cytological investigations and new chromosome number reports in yarrow (Achillea millefolium Linnaeus, 1753) accessions from Iran

    PubMed Central

    Afshari, Fatemeh; Ebrahimi, Mohsen; Akbari, Mohammad; Farajpour, Mostafa

    2013-01-01

    Abstract In this study, a new chromosome number for Iranian yarrow (Achillea millefolium L.) accessions was reported. Cytological analyses on four Achillea millefolium accessions, indicated that two accessions were diploids (2n=2x=18) and two tetraploids (2n=4x=36). Cluster analysis based on chromosomal characteristics and karyotype asymmetry, categorized the four accessions separated into two groups. In terms of the Stebbins’ system, the karyotype of diploid accessions grouped in 2A class. The average value of the total form percentage (TF%) in the group one (diploid accessions) and two (tetraploid accessions) were 40.85 and 41.15, respectively. The group one had the highest mean value for the symmetry index (S%=57.5). Consequently, it can be inferred that diploids belonging to the group one are the earlier evolutionary forms. PMID:24455101

  8. REFRACTORINESS OF AEDES AEGYPTI (LINNAEUS) TO DUAL INFECTION WITH DENGUE AND CHIKUNGUNYA VIRUS

    Microsoft Academic Search

    A Rohani; R Potiwat; I Zamree

    In this study, artificial membrane feeding technique was used to orally feed Aedes aegypti with dengue and chikungunya viruses. Virus detection was carried out by reverse transcriptase polymerase chain reaction. The study did not detect dual in- fection of Ae. aegypti with dengue and chikungunya virus from the same pool or from individual mosquitoes. Oral receptivity of Ae. aegypti to

  9. [Intestinal digeneans of Gavia stellata (Pontoppidan, 1763) and Gavia arctica (Linnaeus, 1758) from West Pomerania, Poland].

    PubMed

    Rzad, Izabella; Kavetska, Katarzyna M; Królaczyk, Katarzyna

    2008-01-01

    In 2000 and 2006 a total of 20 divers including 15 Gavia stellata and 5 Gavia artica from Pomeranian Bay and Szczecin Lagoon were examined. G. stellata were found to be infected with 3 digenean species: Stephanoprora pseudoechinata (Olsson, 1876), Cryptocotyle concava (Creplin, 1825) and Diplostomum gavium (Guberlet, 1922). G. arctica were host to Echinochasmus spinulosus (Rudolphi, 1809). This is the first record of Stephanoprora pseudoechinata in G. stellata and Echinochasmus spinulosus in G. arctica in Poland. The prevalence of S. pseudoechinata infection (46.7%) was higher than that of other digeneans. PMID:19338230

  10. Reproduction and sexual dimorphism in a population of Virginia Striatula Linnaeus (Reptilia, Colubridae 

    E-print Network

    Clark, Donald Ray

    1964-01-01

    . ~ Strecker (1927:3) observed: "While she is heavy with young, the female retires into a hole at the base of a stump or inside of a hollow tree. " However, this may simply re- flect the behavior of this species and not jus( that of gravid females. Wright...

  11. Am. Midl. Nat. 141:315322 Effects of Larval Food-limitation on Vanessa cardui Linnaeus

    E-print Network

    Debinski, Diane M.

    dopterans have focused on adult foraging behavior (Hainsworth and Hamill, 1993) or re- productive allocation as a function of adult diet (Hainsworth et al., 1991; Boggs and Ross, 1993; Boggs, 1997). We were primarily

  12. OSMOTIC AND IONIC REGULATION IN THE HORSESHOE CRAB LIMULUS POLYPHEMUS (LINNAEUS)

    Microsoft Academic Search

    JAMES D. ROBERTSON

    Liinulus polyphensus is one of the four living species of horseshoe .crabs, a. group with a geological history which can be traced back to the Silurian (Neolimu lus) and even to the Cambrian ( StØrmer, 1952) . The Mesozoic species originally referred to the genus Liniulus are closely related and similar to present-day forms and Mesolinzulus walchi of the Jurassic

  13. Reproductive behaviour and mutilations in sally lightfoot Grapsus grapsus (Linnaeus, 1758) (Crustacea, Decapoda)

    Microsoft Academic Search

    Leonardo Romero

    We have analysed molt frequency and reproductive behaviour of G. grapsus in relation to mutilation frequency and cannibalism observed during mating. Observations and surveys were carried out between December 1990 and December 2001, on a 200 m stretch rocky shore in the south of Ancon Bay, Lima, Peru. Population of G. grapsus was organized in groups of variable numbers around

  14. Biological activities of Wiedemannia multifida (Linnaeus) Bentham and Wiedemannnia orientalis Fisch. & Mey.

    PubMed Central

    Albayrak, Sevil; Aksoy, Ahmet

    2013-01-01

    Objective To evaluate total phenolic, antioxidant and antimicrobial activities of methanolic extracts of the Wiedemannia multifida (W. multifida) and Wiedemannnia orientalis (W. orientalis). Methods Phosmomolybdenum assay, DPPH radical scavenging activity and ?-carotene-linoleate bleaching were used to evaluate the antioxidant capacity. Results The total phenolics were found to be (22.45±0.60) and (9.53±0.00) mg gallic acid equivalents (GAE)/g in W. multifida and W. orientalis extracts, respectively. The predominant phenolic compounds identified by HPLC-DAD in the both extracts were rutin+ellagic acid and kaempferol. Total antioxidant capacity and DPPH radical scavenging activity of W. multifida were higher than W. orientalis. In ?-carotene-linoleic acid system, both extracts exhibited strong inhibition against linoleic acid oxidation. Antimicrobial activity was assessed by the agar diffusion method against fifteen microorganisms. Both extracts exhibited remarkable antibacterial activity. Conclusions The present study suggests that methanolic extracts of W. multifida and W. orientalis could be a good source of antioxidant and antimicrobial agents in foods, pharmaceuticals preparations. PMID:23620837

  15. Effects of interstitial refugia and current velocity on growth of the amphipod Gammarus pulex Linnaeus

    Microsoft Academic Search

    Rob J. M. Franken; Steven Batten; John A. J. Beijer; Jean J. P. Gardeniers; Marten Scheffer; Edwin T. H M. Peeters

    2006-01-01

    Substrate interstices influence the microdistribution and survival of benthic invertebrates. The benefits of interstitial refugium availability were quantified over 4 wk under baseflow conditions that are common to lowland streams in northwestern Europe. Effects on growth, feeding, and behavior of the amphipod Gammarus pulex L. were studied in 8 indoor artificial stream channels. Combinations of 2 near-bed flow velocities (3

  16. Seed production and juvenile rearing of the tropical abalone Haliotis varia Linnaeus 1758

    Microsoft Academic Search

    T. M Najmudeen; A. C. C Victor

    2004-01-01

    Spawning, larval and juvenile rearing of the tropical abalone Haliotis varia L. were studied. Brood stock abalone were induced to spawn by exposure to air for 2 h at 27 °C. Female abalone spawned a mean of 76,530 eggs. Fertilised eggs measured 180 ?m in diameter. Seventy percent survival was obtained during larval rearing. Larvae passed trochophore, veliger, gliding and

  17. Sex ratios and sexual dimorphism among recently transformed sea lampreys, Petromyzon marinus Linnaeus

    USGS Publications Warehouse

    Applegate, Vernon C.; Thomas, M.L.H.

    1965-01-01

    The sex, length, and weight were determined of nearly all recently transformed sea lampreys migrating downstream in the Carp Lake River, Michigan, in the fall, winter, and spring of 1960-61. Similar data were collected from samples of an earlier run in the Carp Lake River and of runs in three other tributaries of Lakes Huron and Michigan. The sex ratio of the 1960-61 migrants in the Carp Lake River was 324 males:100 females. Sex ratios of migrants in the other runs varied from 77 to 86 males:100 females. The high proportion of males in the 1960-61 run in the Carp Lake River is attributed to the effective prevention of recruitment of sea lampreys in the river and transformation of the females at an earlier age than is characteristic of the males. A near equal sex ratio among recently transformed migrants is considered normal for the species. The sex composition of a run changed during the period of migration. The proportion of males among the migrants was greatest at the beginning of the run and declined steadily thereafter. The average size was smaller for males than for females. Differences in the mean lengths and weights of the sexes were statistically significant. The length-weight relation differed for the sexes and showed a slower rate of increase of weight with increase in length than is characteristic of other stages of the animals' life cycle. Seasonal changes in the length-weight relation had a trend toward lower weights among the migrants coming downstream in the later months of the run.

  18. Olfactory sensilla of the antennal flagellum of the horn fly, Haematobia irritans, (Linnaeus) (Diptera: Muscidae)

    E-print Network

    White, Sandy Lee

    1978-01-01

    in the latter category (Lewis, 1970; Mercer and McIver, 1973; Bay and Pi tts, 1976), thus resulting in 2 different terms for morphologically identical sensilla. New information, gained through electron microscopy and subject to individual interpretation, has... by Schneider and Steinbrecht, 1968), the silkworm moth, ~Bomb x mori (Steinbrecht, unpubl. quoted by 5th aide d at i b ht, theat, the stable fty, ~at ai it a (Lewis, 1971), the sand fly, Culicoides furens (Chu et al. , 1975), and the face fly, Musca...

  19. Antibacterial efficacy of elite medicinal plants on urolithiasis inducing flora

    Microsoft Academic Search

    Reena Laikangbam; M. Damayanti Devi; S. Rajendra Singh

    2009-01-01

    Medicinal plants are valuable sources of novel antibacterials which are associated with the prevention and control of urolithiasis. Seventeen plant species, namely Allium odorum (Linnaeus), Asparagus racemosus (Willdenow), Averrhoa carambola (Linnaeus), Bonnaya brachiata (Bentham), Cissus adnata (Roxburgh), Cissus discolor (Blume), Coix lachryma jobi (Linnaeus), Cuminum cyminum (Linnaeus), Eupatorium birmanicum (De Candolle), Hedychium marginatum (Charles Baron Clarke), Hibiscus sabdariffa (Linnaeus), Mimosa

  20. vol. 175, no. 2 the american naturalist february 2010 Natural History Note

    E-print Network

    Oliveira, Paulo S.

    without Falling Prey: Chemical Camouflage Protects Honeydew-Producing Treehoppers from Ant Predation resources. Thus chemical camouflage in G. xiphias allows the trophobiont to attract predaceous bodyguards camouflage, cuticular profile, multitrophic interaction, mutualism. Introduction Interactions between

  1. ESTUDIOS DEL MUSEO DE CIENCIAS NATURALES DE

    E-print Network

    Ribera, Ignacio

    . Especies destacables son Agabus labiatus (Brahm, 1790) o Graphoderus cinereus (Linnaeus, 1758) (Dytiscidae) (Dytiscidae), Hydraena rugosa Mulsant, 1844 (Hydraenidae) or Microcara testacea (Linnaeus, 1767) (Scirtidae Agabus labiatus (Brahm, 1790) edo Graphoderus cinereus (Linnaeus, 1758) (Dytiscidae), Hydraena rugosa

  2. Mercury in fish available in supermarkets in Illinois: are there regional differences.

    PubMed

    Burger, Joanna; Gochfeld, Michael

    2006-08-31

    Media coverage has made the public aware of both the benefits and the risks from eating self-caught fish, but information on contaminants in commercial fish is much more limited, especially on a local level. The U.S. Food and Drug Administration website provides methylmercury data for a variety of fish, but for many species sample sizes are small and data are more than a decade old, whereas commercial fish sources are highly dynamic. A few state agencies are beginning to provide contaminant information for commercial fish, including canned tuna. We examined the mercury concentration of six types of fish purchased in supermarkets in Chicago, Illinois in 2005. We measured total mercury (methylmercury accounts for about 90% of the total mercury in fish). One key question was whether the concentrations of mercury in fish available locally were similar to those reported in other areas of the country and in the FDA U.S. national data base. Such information is critical for the public, especially pregnant women or those planning on pregnancy, making decisions about types and quantities of fish to consume. Some fish are available generally throughout the U.S., but others are more locally available, suggesting a need for site-specific information. This research was stakeholder driven, and reflected local interest in the safety of local fish. There were significant differences in mercury concentrations among the fish, ranging from a mean of 0.03 microg/g (ppm-wet weight) for salmon (Salmo spp.) to 1.41 ppm for swordfish (Xiphias gladius). Maximum values for three species of fish (orange roughy Hoplostethus atianticus, swordfish walleye Sander vitreus) were over 1 ppm (FDA action level), and all of the fish except salmon had some values above 0.5 ppm, the action level set by some states and countries. There were significant differences in mercury concentrations among three types of canned tuna (Thunnus spp): "gourmet tuna" had the least amount of mercury, and white tuna had the most. The mean concentrations reported in this study were generally similar to those reported by the FDA, but there were important differences: 1) although the mean mercury concentrations for orange roughy for the Chicago data was similar to the FDA data, the maximum concentration was higher; 2) the mean for the Chicago swordfish was higher than the FDA data (1.26 vs 0.97 ppm, methylmercury); 3) the maximum for tuna steaks was higher in the FDA data set; and, 4) mean values for grouper (Epinephelus spp.) were higher in the FDA data set than the Chicago data. Further, the FDA has virtually no data on walleye and none on "gourmet tuna". These conclusions suggest that there are enough variations between the local data (Chicago) and the FDA data to warrant periodic local monitoring of commercial fish to provide up-to-date information to consumers about mercury in the fish they eat. PMID:16815532

  3. Introduction Two species from the family Polyodontidae are extant: the

    E-print Network

    Villefranche sur mer

    (Polyodon spathula) which is confined to North America, and the Chinese paddlefish (Psephurus gladius) which (Polyodon spathula) spermatozoa. Paddlefish spermatozoa demonstrated the following characteristics: (i) all of fresh and demembranated paddlefish (Polyodon spathula) spermatozoa

  4. Distribution and biological features of the common pandora, Pagellus erythrinus (Linnaeus, 1758), in the southern Tyrrhenian Sea (Central Mediterranean)

    NASA Astrophysics Data System (ADS)

    Busalacchi, B.; Bottari, T.; Giordano, D.; Profeta, A.; Rinelli, P.

    2014-12-01

    A synthetic analysis of the distribution, abundance and some biological traits of the common pandora ( Pagellus erythrinus) was performed. Data were gathered in 15 experimental bottom trawl surveys carried out off the southern Tyrrhenian Sea from 1994 to 2008. A total of 2,166 P. erythrinus were found in the investigated area, with a preference for the upper continental shelf (10-100 m). The highest persistence was recorded in the trawl-banned areas. The sex ratio Sr = F/( F + M) ranged between 0.60 and 0.96 (overall 0.78). The size at which 50 % of the individuals were mature was 157 and 170 mm total length for females and males, respectively. The length-weight relationship for all individuals was described by the following parameters: a = 0.016 and b = 2.905. Growth was evaluated (sexes combined) by applying length-based methods; up to eight significant modal components were evidenced. The von Bertalanffy growth parameters for the whole population were estimated at L ? = 454 mm, K = 0.08 and t 0 = -2.57. The present results are in agreement with the information available for the other Mediterranean stocks suggesting common biological features.

  5. Aspects of the stock dynamics and exploitation of cuttlefish, Sepia officinalis (Linnaeus, 1758), in the English Channel

    Microsoft Academic Search

    M. R. Dunn

    1999-01-01

    Basic biological parameters of cuttlefish, Sepia officinalis, in the English Channel are described from samples of commercial and research vessel landings made between April 1994 and September 1995. There was a significant difference between the length–weight relationship of male and female cuttlefish. Growth of both sexes was rapid and seasonal during the last 12 months of life. Males grew faster

  6. The influence of culture density and enriched environments on the first stage culture of young cuttlefish, Sepia officinalis (Linnaeus, 1758)

    Microsoft Academic Search

    António V. Sykes; Pedro M. Domingues; Maria Loyd; Anne Sommerfield; José P. Andrade

    2003-01-01

    The culture of Sepia officinalis hatchlings and juveniles at different densities and enriched environments was investigated. Experiments were conducted to\\u000a determine effects of culture density and the use of a substrate on growth and survival. Experiment I studied the effect of\\u000a three different densities (52, 515 and 1544 hatchlings m?2). Experiment II tested the effects of the enriched environment, using

  7. The effects of crowding on growth of the European cuttlefish, Sepia officinalis Linnaeus, 1758 reared at two temperatures

    Microsoft Academic Search

    John Forsythe; Phillip Lee; Leigh Walsh; Tara Clark

    2002-01-01

    The objective of this study was to examine the impact of crowding (stocking density) on food consumption and growth of juvenile Sepia officinalis reared at 17 and 25 °C. Two groups of 75 cuttlefish each were reared in closed seawater systems with water temperatures of 17 and 25 °C. Each group was subdivided into two treatments (three replicates per treatment):

  8. Peptide toxin glacontryphan-M is present in the wings of the butterfly Hebomoia glaucippe (Linnaeus, 1758) (Lepidoptera: Pieridae).

    PubMed

    Bae, Narkhyun; Li, Lin; Lödl, Martin; Lubec, Gert

    2012-10-30

    Protein profiling has revealed the presence of glacontryphan-M, a peptide toxin identified only in the sea snail genus Conus, in the wings of Hebomoia glaucippe (HG). The wings and body of HG were homogenized and the proteins were extracted and analyzed by 2D gel electrophoresis with subsequent in-gel digestion. Posttranslational protein modifications were detected and analyzed by nano-LC-MS/MS. An antibody was generated against glacontryphan-M, and protein extracts from the wings of HG samples from Malaysia, Indonesia, and the Philippines were tested by immunoblotting. Glacontryphan-M was unambiguously identified in the wings of HG containing the following posttranslational protein modifications: monoglutamylation at E55, methylation at E53, quinone modification at W61, cyanylation at C56, and amidation of the C terminus at G63. Immunoblotting revealed the presence of the toxin in the wings of HG from all origins, showing a single band for glacontryphan-M in HG samples from Malaysia and Philippines and a double band in HG samples from Indonesia. Intriguingly, sequence analysis indicated that the Conus glacontryphan is identical to that of HG. The toxin may function as a defense against diverse predators, including ants, mantes, spiders, lizards, green frogs, and birds. PMID:23071323

  9. Mass spectrometrical analysis of bilin-binding protein from the wing of Hebomoia glaucippe (Linnaeus, 1758) (Lepidoptera: Pieridae).

    PubMed

    Bae, Narkhyun; Lödl, Martin; Pollak, Arnold; Lubec, Gert

    2012-07-01

    Bilin-binding protein (BBP) is a member of the lipocalin superfamily and a pigment protein in Lepidoptera. It is binding to a series of lipidic compounds but its functions remain to be elucidated. Working on wing proteins in Hebomoia glaucippe, we observed this protein on gels and decided to characterize BBP. A gel-based mass spectrometrical method using two-dimensional gel electrophoresis followed by in-gel digestion of protein spots followed by nano-LC-ESI-MS/MS (ion trap, HCT) identification and characterization of proteins was applied. An antibody was generated against the protein and immunoblotting in the butterfly and mouse brain was carried out. Two spots were identified from the butterfly wing as BBP (P09464) with high sequence coverage. Nitrotyrosination (Y163; as aminotyrosine) was observed and nitration was verified using immunoblotting. Additional posttranslational modifications (PTMs) as hypusine, carboxylation, kynurenine, aminoadipic acid, were proposed. The presence of BBP-immunoreactive protein was also observed in mouse brain. The characterization of BBP showed high sequence similarity with mouse apolipoprotein D and the findings suggest a tentative function of BBP comparable to apolipoproteins. The role of the PTMs remains elusive but nitration, in analogy to nitration effects reported in literature, proposes a role for mechanoelastic proteins and protein-protein interactions. PMID:22740467

  10. SPATIAL DISTRIBUTION OF LYMNAEIDAE (MOLLUSCA, BASOMMATOPHORA), INTERMEDIATE HOST OF Fasciola hepatica LINNAEUS, 1758 (TREMATODA, DIGENEA) IN BRAZIL

    PubMed Central

    Medeiros, Camilla; Scholte, Ronaldo Guilherme Carvalho; D'ávila, Sthefane; Caldeira, Roberta Lima; Carvalho, Omar dos Santos

    2014-01-01

    Snails of the family Lymnaeidae act as intermediate hosts in the biological cycle of Fasciola hepatica, which is a biological agent of fasciolosis, a parasitic disease of medical importance for humans and animals. The present work aimed to update and map the spatial distribution of the intermediate host snails of F. hepatica in Brazil. Data on the distribution of lymnaeids species were compiled from the Collection of Medical Malacology (Fiocruz-CMM, CPqRR), Collection of Malacology (MZUSP), “SpeciesLink” (CRIA) network and through systematic surveys in the literature. Our maps of the distribution of lymnaeids show that Pseudosuccinea columella is the most common species and it is widespread in the South and Southeast with few records in the Midwest, North and Northeast regions. The distribution of the Galba viatrix, G. cubensis and G. truncatula showed a few records in the South and Southeast regions, they were not reported for the Midwest, North and Northeast. In addition, in the South region there are a few records for G. viatrix and one occurrence of Lymnaea rupestris. Our findings resulted in the first map of the spatial distribution of Lymnaeidae species in Brazil which might be useful to better understand the fasciolosis distribution and delineate priority areas for control interventions. PMID:24879003

  11. Ultrastructure of sperm of the Spotted scat (Scatophagus argus, Linnaeus, 1766) observed by scanning and transmission electron microscopy.

    PubMed

    Madhavi, M; Kailasam, M; Mohanlal, D L

    2015-02-01

    An investigation was conducted to understand the sperm cell morphology and ultrastructure of Spotted scat (Scatophagus argus) through scanning and transmission electron microscopy. The present study reveals that the sperm of S. argus can be differentiated into three major parts - an acrosome-less spherical head, a short mid-piece, and a cylindrical flagellum. The scat sperm cell had a mean total length of 21.32 ± 1.80 ?m with the presence of ovoid electron-dense nucleus. The mean length and width of ovoid nucleus measured 1.44 ± 0.34 and 1.54 ± 0.33 ?m, respectively. The structural characteristics of the nucleus were found to be a shallow axial nuclear fossa and centriolar complex. The two centrioles were positioned nearly perpendicular to each other with a conventional "9 + 0" pattern in the proximal centriole. The short mid-piece was located laterally to the nucleus and contains 5 or 6 spherical and unequal-sized mitochondria. The mitochondria were separated from the axoneme by a cytoplasmic canal. The flagellum was inserted at the base of the nucleus with the presence of an axoneme structure of 9 + 2 paired micro tubules. The sperm flagellum had short irregular lateral fins. The present study reveals that Spotted scat sperm can be categorized as being of a "primitive or ect-aquasperm type" and belongs to the teleostean "type I" sperm. This is the first report on the morphology and ultrastructure of sperm in Scatophagidae family. PMID:25577714

  12. A contribution for the definition of serum chemistry values in captive adults Antillean manatees (Trichechus manatus manatus Linnaeus, 1758).

    PubMed

    Silva, F M O; Vergara-Parente, J E; Gomes, J K N; Teixeira, M N; Lima, R P

    2007-04-01

    Serum chemistry analyses represents a fundamental tool for the diagnosis and understanding of diseases in marine mammals. Although several studies are being conducted within the field of clinical pathology, haematological and serum chemistry data for Antillean manatees are deficient. The purpose of this study was to determine serum chemistry values for captive Antillean manatees within the CMA/Ibama facility in Brazil. Serum samples were obtained from five captive adult Antillean manatees fed with seagrass and analysed for aspartate aminotransferase, alanine aminotransferase, bilirubin, alkaline phosphatase, urea, creatinine, glucose, triglycerides, cholesterol, total protein, albumin, globulin, phosphate, chloride, calcium and uric acid. Blood chemistry parameters were determined using a semi-automatic analyzer. Maximum, minimum, mean and standard deviations were calculated for each serum chemistry parameter. Differences on the values of males and females were verified using an unpaired Student's t-test. All the parameters analysed were similar between sexes, with exception of AP, which was higher in females (191.43 +/- 31.86 U/l). Alanine aminotransferase and uric acid values for Trichechus manatus manatus are reported for the first time in this paper. This study is the first to report serum chemistry parameter values for long-term captive male and female Antillean manatees. Therefore, the lower values of albumin, phosphate, chloride, cholesterol and triglycerides obtained here highlight the importance of clinical pathology during health monitoring of captive marine mammals. PMID:17381673

  13. Molecular detection and identification of hemoparasites in pampas deer (Ozotoceros bezoarticus Linnaeus, 1758) from the Pantanal Brazil.

    PubMed

    Silveira, Júlia A G; Rabelo, Elida M L; Lacerda, Ana C R; Borges, Paulo A L; Tomás, Walfrido M; Pellegrin, Aiesca O; Tomich, Renata G P; Ribeiro, Múcio F B

    2013-06-01

    Hemoparasites were surveyed in 60 free-living pampas deer Ozotoceros bezoarticus from the central area of the Pantanal, known as Nhecolândia, State of Mato Grosso do Sul, Brazil, through the analysis of nested PCR assays and nucleotide sequencing. Blood samples were tested for Babesia/Theileria, Anaplasma spp., and Trypanosoma spp. using nPCR assays and sequencing of the 18S rRNA, msp4, ITS, and cathepsin L genes. The identity of each sequence was confirmed by comparison with sequences from GenBank using BLAST software. Forty-six (77%) pampas deer were positive for at least one hemoparasite, according to PCR assays. Co-infection occurred in 13 (22%) animals. Based on the sequencing results, 29 (48%) tested positive for A. marginale. Babesia/Theileria were detected in 23 (38%) samples, and according to the sequencing results 52% (12/23) of the samples were similar to T. cervi, 13% (3/23) were similar to Babesia bovis, and 9% (2/23) were similar to B. bigemina. No samples were amplified with the primers for T. vivax, while 11 (18%) were amplified with the ITS primers for T. evansi. The results showed pampas deer to be co-infected with several hemoparasites, including species that may cause serious disease in cattle. Pampas deer is an endangered species in Brazil, and the consequences of these infections to their health are poorly understood. PMID:23567028

  14. Ultrastructure and Glycoconjugate Pattern of the Foot Epithelium of the Abalone Haliotis tuberculata (Linnaeus, 1758) (Gastropoda, Haliotidae)

    PubMed Central

    Bravo Portela, I.; Martinez-Zorzano, V. S.; Molist- Perez, I.; Molist García, P.

    2012-01-01

    The foot epithelium of the gastropod Haliotis tuberculata is studied by light and electron microscopy in order to contribute to the understanding of the anatomy and functional morphology of the mollusks integument. Study of the external surface by scanning electron microscopy reveals that the side foot epithelium is characterized by a microvillus border with a very scant presence of small ciliary tufts, but the sole foot epithelium bears a dense field of long cilia. Ultrastructural examination by transmission electron microscopy of the side epithelial cells shows deeply pigmented cells with high electron-dense granular content which are not observed in the epithelial sole cells. Along the pedal epithelium, seven types of secretory cells are present; furthermore, two types of subepithelial glands are located just in the sole foot. The presence and composition of glycoconjugates in the secretory cells and subepithelial glands are analyzed by conventional and lectin histochemistry. Subepithelial glands contain mainly N-glycoproteins rich in fucose and mannose whereas secretory cells present mostly acidic sulphated glycoconjugates such as glycosaminoglycans and mucins, which are rich in galactose, N-acetyl-galactosamine, and N-acetyl-glucosamine. No sialic acid is present in the foot epithelium. PMID:22645482

  15. Effects of different host plants and rearing atmosphere on life cycle of large white cabbage butterfly, Pieris brassicae (Linnaeus)

    Microsoft Academic Search

    Damitre Lytan; D. M. Firake

    2012-01-01

    We studied the effect of different host plants and rearing atmosphere on life cycle of cabbage butterfly, Pieris brassicae. Insects were reared in the field (fluctuating weather) as well as in the laboratory (constant rearing conditions) on four host plants, viz. cabbage, cauliflower, knol-khol and broccoli. Significant differences were not found in the incubation and pupal period of butterfly reared

  16. Grow-out culture of tropical abalone, Haliotis asinina (Linnaeus) in suspended mesh cages with different shelter surface areas

    Microsoft Academic Search

    Armando C. Fermin; Shela Mae Buen

    2002-01-01

    Thisstudy investigated the effects of shelter surface area (SSA) on the feeding,growth and survival of the donkey-ear abalone, Haliotisasinina reared in mesh cages (0.38×0.38×0.28m) suspended in flow-through tanks (water volume = 6m3). Cages had sections of polyvinylchloride (PVC) thatprovided shelters with surface area of 0.22 m2, 0.44m2 and 0.66 m2.Hatchery-produced abalone with initial shell length of 32 ± 1mm and

  17. Effect of zinc and benzene on respiration and excretion of mussel larvae (Perna perna) (Linnaeus, 1758) (Mollusca; Bivalvia).

    PubMed

    Jorge, R A D L V C; Lemos, D; Moreira, G S

    2007-02-01

    The presence of pollutants in the ocean may affect different physiological parameters of animals. Oxygen consumption and ammonia excretion were evaluated in D-shaped larvae of mussels (Perna perna) exposed to zinc sulphate (ZnSO(4)) and benzene (C(6)H(6)). When compared to the control group, both pollutants presented a significant reduction in oxygen consumption. A reduction in the ammonia excretion was also observed, both for ZnSO(4) and C(6)H(6) and also in the oxygen consumption. The results indicate that anaerobic metabolism may occur at the beginning of P. perna mussels development, as observed in veliger larvae. The O:N ratio under experimental conditions showed low values indicating that catabolism in veliger larvae was predominantly proteic. PMID:17505757

  18. Three centuries of temperature records in Scotland preserved in sclerochronological archives from freshwater pearl mussels, Margaritifera margaritifera (Linnaeus, 1758)

    NASA Astrophysics Data System (ADS)

    Pannell, C. L., ,, Dr; Fallick, A. E., ,, Prof.

    2009-04-01

    Bivalves are natural indicators of environmental variability as they reflect environmental conditions such as temperature in growth bands within the shell. During the winter period in temperate climes, shell growth ceases owing to the low water temperature and limited food supply. This hiatus is revealed by chemical staining as a very distinct etch-resistant band - termed the winter line. Winter lines alternate with less etch-resistant bands thus providing a chronology for any analyses which can be correlated to other proxy series and instrumental data. Freshwater pearl mussels have also been shown to form their shells in oxygen isotopic equilibrium with the ambient water thus fluctuations in water temperature can be constrained from the ^18Ocarbonatedata. As long as the date of collection is known, annual growth increments provide a precise dating tool for isotope samples and allow the allocation of precise calendar years to each part of the shell. Measurements of consecutive increments serve as records of isotopic composition from which derived temperatures may be correlated with other sample series and annual instrumental records, giving a high resolution proxy for temperature for a given region. ....... The use of live-collected M. margaritifera shells is now prohibited in the UK due to the mussel's rarity and its protection under the Wildlife and Countryside Act (1981) and the European Union Habitats and Species Directive (EUHSD). Museum collections of freshwater pearl mussels thus provide an invaluable resource, with many collections in UK museums having been live-collected during 19th century. As M. margaritifera is one of the longest-lived invertebrates, attaining an age of up to 140 years, sclerochronological and ^18Oaragonite data have the potential to provide terrestrial climate records on the centennial scale. The use of museum specimens has the potential to establish a composite three hundred year record of Scottish environmental change. Shells from several localities in Scotland dating from the late 1700s to the present were sampled and the results compiled to construct a composite record of temperature change prior to and during the anthopogenically-induced contribution to climate change. The breadth of the collections used and the sampling protocol employed allows the examination of intra-individual and intraspecific variability in ^18Oaragonite data from contemporaneous individuals from the same locality. Results have implications for the use of archaeological and subfossil shells in the reconstruction of past climates.

  19. The first report of Toxoplasma gondii antibodies in free-living European bison (Bison bonasus bonasus Linnaeus).

    PubMed

    Majewska, Anna C; Werner, Anna; Cabaj, W?adys?aw; Moskwa, Bozena

    2014-02-01

    Toxoplasma gondii Nicolle et Manceaux, 1908 is an apicomplexan parasite with a worldwide distribution. It is of great medical and veterinary importance because it may cause abortion or congenital disease in its intermediate hosts, including man. The European bison, the largest herbivorous animal in Europe, is a species that has been saved from extinction. Twenty-four of 95 examined sera of the European bison (Bison bonasus bonasus) from the Bia?owieza Forest, Poland collected from 2008 to 2011 were found to be positive for the presence of T. gondii-specific IgG antibodies using a direct agglutination test, with the antibody titre in positive animals ranging from 40 to 18000. Statistically significant differences were observed only between years of sample collection. This is the first report on T. gondii in lowland European bison living in the natural environment. PMID:24684049

  20. Antioxidant enzyme activity and mRNA expression in reproductive tract of adult male European Bison (Bison bonasus, Linnaeus 1758).

    PubMed

    Koziorowska-Gilun, M; Gilun, P; Fraser, L; Koziorowski, M; Kordan, W; Stefanczyk-Krzymowska, S

    2013-02-01

    Antioxidants in the male reproductive tract are the main defence factors against oxidative stress caused by reactive oxygen species production, which compromises sperm function and male fertility. This study was designed to determine the activity of antioxidant enzymes, such as superoxide dismutase (SOD), catalase (CAT) and glutathione peroxidase (GPx), in the testicular and epididymidal tissues of adult male European bison (Bison bonasus). The reproductive tract tissues were subjected to real-time reverse transcriptase-polymerase chain reaction (RT-PCR) analysis to quantify mRNA expression levels of five antioxidant enzymes: copper/zinc SOD (Cu/Zn SOD), secretory extracellular SOD (Ec-SOD), CAT, phospholipid hydroperoxide glutathione peroxidase (PHGPx) and GPx5. The corpus and cauda epididymidal tissues displayed greater (p < 0.05) SOD activity compared with the testicular tissue. It was found that CAT activity was lowest (p < 0.05) in the cauda epididymidis, whereas negligible GPx activity was detected in the reproductive tract tissues. There were no detectable differences in the mRNA expression level of Cu/Zn SOD among the different reproductive tract tissues. Small amounts of Ec-SOD mRNA were found in the reproductive tract, particularly in the epididymides. The caput and cauda epididymides exhibited greater (p < 0.05) level of CAT mRNA expression, whereas PHGPx mRNA was more (p < 0.05) expressed in the testis. Furthermore, extremely large amounts of GPx5 mRNA were detected in the caput epididymidal tissue compared with other tissues of the reproductive tract. It can be suggested that the activity of the antioxidant enzymes and the relative gene expression of the enzymes confirm the presence of tissue-specific antioxidant defence systems in the bison reproductive tract, which are required for spermatogenesis, epididymal maturation and storage of spermatozoa. PMID:22458932

  1. Improvement of lipid profile and antioxidant of hypercholesterolemic albino rats by polysaccharides extracted from the green alga Ulva lactuca Linnaeus

    PubMed Central

    Hassan, Sherif; El-Twab, Sanaa Abd; Hetta, Mona; Mahmoud, Basant

    2011-01-01

    Sulfated polysaccharides from Ulva lactuca were extracted in hot water and precipitated by ethanol then orally gavaged to rats fed on a hypercholesterolemic diet for 21 days to evaluate the antihypercholesterolemic and antioxidant actions. Atorvastatine Ca (Lipitor) was used as a reference drug. The intragastric administration of U. lactuca extract to hypercholesterolemic rats caused significant decrease of serum total lipids, triglycerides, total cholesterol, LDL-cholesterol and vLDL-cholesterol levels. Whereas, HDL-cholesterol concentration was markedly increased by 180%. Aqueous extract showed a significant ameliorative action on elevated atherogenic index, creatine kinase and lactate dehydrogenase activities of hypercholesterolemic group. Furthermore, serum activities of transaminases and alkaline phosphatase were also improved. High fat diet intake caused a highly significantly elevated serum urea, creatinine concentration. These effects were reversed by oral administration of U. lactuca extract. Sulfates polysaccharides extract of U. lactuca ameliorate hepatic enzymatic (catalase, glutathione peroxidase and superoxide dismutase), non-enzymatic (reduced glutathione & total thiol) antioxidant defenses and thiobarbituric acid reactive substances. In conclusion, the tested U. lactuca polysaccharides extract has potent hypocholesterolemic and antioxidant effects in experimentally-induced hypercholesterolemic animal model. PMID:23961145

  2. Brain anatomy of the marine isopod Saduria entomon Linnaeus, 1758 (Valvifera, Isopoda) with special emphasis on the olfactory pathway

    PubMed Central

    Kenning, Matthes; Harzsch, Steffen

    2013-01-01

    Representatives of at least six crustacean taxa managed to establish a terrestrial life style during their evolutionary history and the Oniscidea (Isopoda) are currently held as the most successfully terrestrialized malacostracan crustaceans. The brain architecture of terrestrial isopods is fairly well understood and studies on this field suggest that the evolutionary transition from sea to land in isopods coincided with a considerable size reduction and functional loss of their first pair of antennae and associated brain areas. This finding suggests that terrestrial isopods may have no or poor abilities to detect volatile substances but that their chemosensory ecology is most likely restricted to contact chemoreception. In this study, we explored how the brain of a marine isopod and particularly its olfactory system compares to that of terrestrial relatives. Using histochemical and immunohistochemical labeling, brightfield and confocal laser-scan microscopy, we show that in the marine isopod Saduria entomon aesthetascs on the first pair of antennae provide input to a well defined deutocerebrum (DC). The deutocerebral chemosensory lobes (DCL) are divided into spherical neuropil compartments, the olfactory glomeruli (og). Secondary processing areas in the lateral protocerebrum (lPC) are supplied by a thin but distinct projection neuron tract (PNT) with a contralateral connection. Hence, contrary to terrestrial Isopoda, S. entomon has at least the neuronal substrate to perceive and process olfactory stimuli suggesting the originally marine isopod lineage had olfactory abilities comparable to that of other malacostracan crustaceans. PMID:24109435

  3. Acclimation rate and resistance to lethal temperatures of 20-35 mm striped mullet, Mugil cephalus Linnaeus, at various salinities 

    E-print Network

    Pfeiffer, Gerald Patrick

    1971-01-01

    definite relationship of length to death time is seen here. The larger fish are more resistant to thermal stress 51 5 Analysis of variance due to regressions of length on death time. The lethal temperature was 37. 3 C. . 52 viii LIST OF FIGURES Pacae... of death times of fish subjected to lethal temperatures of 37. 0 and 37. 3 C (at sal- inities of 1 and 3@) on March 8, 1970 37 LIST OF FIGURES (continued) Pacae probit graph of death times of fish subjected to lethal temperatures of 37. 0 and 37. 3 C...

  4. Residual effects of TMOF-Bti formulations against 1st instar Aedes aegypti Linnaeus larvae outside laboratory

    PubMed Central

    Saiful, AN; Lau, MS; Sulaiman, S; Hidayatulfathi, O

    2012-01-01

    Objective To evaluate the effectiveness and residual effects of trypsin modulating oostatic factor-Bacillus thuringiensis israeliensis (TMOF-Bti) formulations against Aedes aegypti (Ae. aegypti) (L.) larvae at UKM Campus Kuala Lumpur. Methods Twenty first instar Ae. aegypti larvae were added in each bucket containing 4 L of water supplied with crushed dried leaf powder as their source of food. Combination of TMOF-Bti in rice husk formulation with the following weights viz 10, 25, 50 and 100 mg, respectively in duplicate was distributed in the buckets; while TMOF-Bti in wettable powder formulation each weighing viz 2, 5, 10 and 20 mg, respectively in duplicate was also placed in the buckets. The control buckets run in duplicate with 4 L of water and 20 first instar Ae. aegypti larvae. All buckets were covered with mosquito netting. Larval mortality was recorded after 24 hours and weekly for five weeks. A new batch of 20 1st instar larvae Ae. aegypti was introduced into each bucket weekly without additional TMOF-Bti rice husk formulation or wettable powder. The experiment was repeated for four times. Results The result of the study showed that all formulations were very effective on the first two weeks by giving 100% larval mortality for all concentrations applied. The TMOF (2%) + Bti (2%) had a good residual effect until the end of 3rd week, TMOF (4%) + Bti (4%) until 4th week, wettable powder TMOF (20%) + Bti (20%) until the third week. Conclusions From the results it can be concluded that the TMOF-Bti formulations can be utilized in dengue vector control. PMID:23569922

  5. Ontogenetic profile of innate immune related genes and their tissue-specific expression in brown trout, Salmo trutta (Linnaeus, 1758).

    PubMed

    Cecchini, Stefano; Paciolla, Mariateresa; Biffali, Elio; Borra, Marco; Ursini, Matilde V; Lioi, Maria B

    2013-09-01

    The innate immune system is a fundamental defense weapon of fish, especially during early stages of development when acquired immunity is still far from being completely developed. The present study aims at looking into ontogeny of innate immune system in the brown trout, Salmo trutta, using RT-PCR based approach. Total RNA extracted from unfertilized and fertilized eggs and hatchlings at 0, 1 h and 1, 2, 3, 4, 5, 6, 7 weeks post-fertilization was subjected to RT-PCR using self-designed primers to amplify some innate immune relevant genes (TNF-?, IL-1?, TGF-? and lysozyme c-type). The constitutive expression of ?-actin was detected in all developmental stages. IL-1? and TNF-? transcripts were detected from 4 week post-fertilization onwards, whereas TGF-? transcript was detected only from 7 week post-fertilization onwards. Lysozyme c-type transcript was detected early from unfertilized egg stage onwards. Similarly, tissues such as muscle, ovary, heart, brain, gill, testis, liver, intestine, spleen, skin, posterior kidney, anterior kidney and blood collected from adult brown trout were subjected to detection of all selected genes by RT-PCR. TNF-? and lysozyme c-type transcripts were expressed in all tissues. IL-1? and TGF-? transcripts were expressed in all tissues except for the brain and liver, respectively. Taken together, our results show a spatial-temporal expression of some key innate immune-related genes, improving the basic knowledge of the function of innate immune system at early stage of brown trout. PMID:23765117

  6. Flow cytometry as a tool in the evaluation of blood leukocyte function in Chelonia mydas (Linnaeus, 1758) (Testudines, Cheloniidae).

    PubMed

    Rossi, S; Sá-Rocha, V M; Kinoshita, D; Genoy-Puerto, A; Zwarg, T; Werneck, M R; Sá-Rocha, L C; Matushima, E R

    2009-08-01

    Chelonia mydas is a sea turtle that feeds and nests on the Brazilian coast and a disease called fibropapillomatosis is a threat to this species. Because of this, it is extremely necessary to determine a methodology that would enable the analysis of blood leukocyte function in these sea turtles. In order to achieve this aim, blood samples were collected from C. mydas with or without fibropapillomas captured on the São Paulo north coast. Blood samples were placed in tubes containing sodium heparin and were transported under refrigeration to the laboratory in sterile RPMI 1640 cell culture medium. Leukocytes were separated by density gradient using Ficoll-PaqueTM Plus, Amershan Biociences. The following stimuli were applied in the assessment of leukocyte function: Phorbol Miristate-Acetate (PMA) for oxidative burst activity evaluation and Zymosan A (Saccharomyces cerevisiae) Bio Particles, Alexa Fluor 594 conjugate for phagocytosis evaluation. Three cell populations were identified: heterophils, monocytes and lymphocytes. Monocytes were the cells responsible for phagocytosis and oxidative burst. PMID:19802451

  7. Thermal tolerance during early ontogeny in the common whelk Buccinum undatum (Linnaeus 1785): Bioenergetics, nurse egg partitioning and developmental success

    NASA Astrophysics Data System (ADS)

    Smith, Kathryn E.; Thatje, Sven; Hauton, Chris

    2013-05-01

    Temperature is arguably the primary factor affecting development in ectotherms and, as a result, may be the driving force behind setting species' geographic limits. The shallow-water gastropod Buccinum undatum is distributed widely throughout the North Atlantic, with an overall annual thermal range of below zero to above 22 °C. In UK waters this species is a winter spawner. Egg masses are laid and develop when sea temperatures are at their coolest (4 to 10 °C) indicating future climate warming may have the potential to cause range shifts in this species. In order to examine the potential impacts of ocean warming, we investigate the effects of temperature on the early ontogeny of B. undatum across a thermal range of 0 to 22 °C. Each egg mass consists of approximately 100 capsules, in which embryos undergo direct development. Successful development was observed at temperatures ranging from 6 to 18 °C. Rates of development increased with temperature, but the proportion of each egg mass developing successfully decreased at the same time. With increasing temperature, the mean early veliger weight increased, but the number of early veligers developing per capsule decreased, suggesting a negative impact on the number of crawl-away juveniles produced per capsule. Elemental analysis showed both carbon (C) and nitrogen (N) to increase with temperature in early veligers but not in hatching juveniles, indicating greater energy reserves are accumulated during early ontogeny to compensate for the higher energetic demands of development at higher temperature. The developmental plasticity observed in B. undatum suggests this species to be capable of adapting to temperatures above those it currently experiences in nature. B. undatum may possess a thermal resilience to ocean warming at its current upper temperature distribution limit. This thermal resilience, however, may come at the cost of a reduced offspring number.

  8. Age, Growth and Feeding Habits of the Brown Comber Serranus hepatus(Linnaeus, 1758) on the Cretan Shelf

    NASA Astrophysics Data System (ADS)

    Labropoulou, M.; Tserpes, G.; Tsimenides, N.

    1998-05-01

    Forty-five samples of the brown comber Serranus hepatuswere collected during experimental surveys carried out on a monthly basis (August 1990 to August 1992) along the Cretan continental shelf. A total of 1268 specimens 31-140 mm in total length were analysed. Growth was well described by both standard and seasonalized forms of the von Bertalanffy growth model and the computed parameters were L?;=152 mm, k=0·36, t0=-0·57. Feeding intensity was high throughout the study period and varied significantly among the age classes of fish examined. Stomach content analysis revealed that S. hepatusis carnivorous, feeding mainly on decapods. Diets did not vary seasonally; decapods were the most important prey throughout the year. However, the composition of the prey consumed varied considerably with predator age coupled with differences in mean prey sizes utilized by each age class. The mean weight of stomach contents increased significantly for older specimens, while the mean number of prey items decreased. Age-specific dietary selection was primarily a function of body size of the predator and appears to reduce intra-specific competition among the members of the different age classes. The results suggest that S. hepatusplays an important trophic role as a macrophagic carnivorous species on the Cretan continental shelf.

  9. SEM studies on immature stages of the drone flies (diptera, syrphidae): Eristalis similis (Fallen, 1817) and Eristalis tenax (Linnaeus, 1758).

    PubMed

    Pérez-Bañón, Celeste; Hurtado, Pilar; García-Gras, Elena; Rojo, Santos

    2013-08-01

    Adult drone flies (Syrphidae: Eristalis spp.) resemble male honeybees in appearance. Their immature stages are commonly known as rat-tailed maggots due to the presence of a very long anal segment and a telescopic breathing tube. The larvae are associated with decaying organic material in liquid or semi-liquid media, as in the case of other saprophagous eristalines. Biological and morphological data were obtained from both laboratory cultures and sampling in the field. Drone flies are important pollinators for wild flowers and crops. In fact, mass rearing protocols of Eristalis species are being developed to be used as efficient alternative pollinators. However, deeper knowledge of larval morphology and biology is required to improve artificial rearing. The production quality control of artificial rearing must manage the consistency and reliability of the production output avoiding, for example contamination with similar species. This article presents the first description of the larva and puparium of E. similis, including a comparative morphological study of preimaginal stages of the anthropophilic and ubiquitous European hoverfly species E. tenax. Scanning electron microscopy has been used for the first time to describe larvae and puparia of both species. Moreover, the preimaginal morphology of E. similis has been compared with all known descriptions of the genus Eristalis. The main diagnostic characters of the preimaginal stages of E. similis are the morphology of the anterior spiracles (shape of clear area and arrangement of facets) and pupal spiracles (length, shape, and arrangement of tubercles). PMID:23733631

  10. Impact of Elevated Levels of Atmospheric CO 2 and Herbivory on Flavonoids of Soybean ( Glycine max Linnaeus)

    Microsoft Academic Search

    Bridget F. O’Neill; Arthur R. Zangerl; Orla Dermody; Damla D. Bilgin; Clare L. Casteel; Jorge A. Zavala; Evan H. DeLucia; May R. Berenbaum

    2010-01-01

    Atmospheric levels of carbon dioxide (CO2) have been increasing steadily over the last century. Plants grown under elevated CO2 conditions experience physiological changes, particularly in phytochemical content, that can influence their suitability\\u000a as food for insects. Flavonoids are important plant defense compounds and antioxidants that can have a large effect on leaf\\u000a palatability and herbivore longevity. In this study, flavonoid

  11. Chemistry of the sternal gland secretion of the Mediterranean centipede Himantarium gabrielis (Linnaeus, 1767) (Chilopoda: Geophilomorpha: Himantariidae)

    NASA Astrophysics Data System (ADS)

    Vujisi?, Ljubodrag V.; Vu?kovi?, Ivan M.; Makarov, Slobodan E.; Ili?, Bojan S.; Anti?, Dragan Ž.; Jadranin, Milka B.; Todorovi?, Nina M.; Mrki?, Ivan V.; Vajs, Vlatka E.; Lu?i?, Luka R.; ?ur?i?, Božidar P. M.; Miti?, Bojan M.

    2013-09-01

    The geophilomorph centipede, Himantarium gabrielis, when disturbed, discharges a viscous and proteinaceous secretion from the sternal glands. This exudate was found by gas chromatography-mass spectrometry, liquid chromatography-high resolution mass spectrometry, liquid chromatography-mass spectrometry-mass spectrometry and NMR analyses to be composed of hydrogen cyanide, benzaldehyde, benzoyl nitrile, benzyl nitrile, mandelonitrile, mandelonitrile benzoate, 3,7,6 O-trimethylguanine (himantarine), farnesyl 2,3-dihydrofarnesoate and farnesyl farnesoate. This is the first report on the presence of benzyl nitrile and mandelonitrile benzoate in secreted substances from centipedes. Farnesyl 2,3-dihydrofarnesoate is a new compound, while himantarine and farnesyl farnesoate were not known as natural products. A post-secretion release of hydrogen cyanide by reaction of mandelonitrile and benzoyl nitrile was observed by NMR, and hydrogen cyanide signals were completely assigned. In addition, a protein component of the secretion was analysed by electrophoresis which revealed the presence of a major 55 kDa protein. Analyses of the defensive exudates of other geophilomorph families should produce further chemical surprises.

  12. An anthocyanin-rich extract from Hibiscus sabdariffa linnaeus inhibits N-nitrosomethylurea-induced leukemia in rats.

    PubMed

    Tsai, Tsung-Chang; Huang, Hui-Pei; Chang, Yun-Ching; Wang, Chau-Jong

    2014-02-19

    A previous study reported that anthocyanins from roselle (Hibiscus sabdariffa L.) showed significant anticancer activity in human promyelocytic leukemia cells. To explore the antitumor effect of anthocyanin, a roselle bioactive polyphenol in a rat model of chemical-induced leukemia was assayed. Anthocyanin extract of roselle (Hibiscus anthocyanins, HAs) was supplemented in the diet (0.1 and 0.2%). This study was carried out to evaluate the protective effect of HAs on N-nitrosomethylurea (NMU)-induced leukemia of rats. The study employed male Sprague-Dawley rats (n = 48), and leukemia was induced by intravenous injection of 35 mg kg(-1) body weight of NMU dissolved in physiologic saline solution. The rats were divided into four groups (n = 12): control, NMU only, and HAs groups that received different doses of HAs (0.1 and 0.2%) daily, orally, after NMU injection. After 220 days, the animals were killed, and the following parameters were assessed: morphological observation, hematology examination, histopathological assessment, and biochemical assay. When compared with the NMU-only group, HAs significantly prevented loss of organ weight and ameliorated the impairment of morphology, hematology, and histopathology. Treatment with HAs caused reduction in the levels of AST, ALT, uric acid, and MPO. Also, the results showed that oral administration of HAs (0.2%) remarkably inhibited progression of NMU-induced leukemia by approximately 33.3% in rats. This is the first report to demonstrate that the sequential administration of HAs followed by NMU resulted in an antileukemic activity in vivo. PMID:24471438

  13. Effect of copper on morphology, weight, and chromosomal aberrations in the spiny lobster, Panulirus homarus (Linnaeus, 1758).

    PubMed

    Maharajan, A; Vaseeharan, B; Rajalakshmi, S; Vijayakumaran, M; Kumarasamy, P; Chen, J C

    2011-12-01

    Spiny lobster Panulirus homarus which had been exposed to cupric ion at 9.55 and 19.1 ?g/l for 28 days was examined for sub-lethal effects including morphology, wet weight, and induced genotoxic effect on the chromosome. Following cupric exposure, the color of lobster P. homarus changed from yellowish-brown to greenish black in the hepatopancreas, changed from normal creamy white to yellowish white in the muscle, and changed to greenish black in the gill. A significant change in the percentage of wet weight of muscle (28.70?±?0.41-23.47?±?0.45), hepatopancreas (4.03?±?0.12-2.63?±?0.17), and gills (3.63?±?0.45-3.87?±?0.12) were observed in the copper-treated lobsters. The diploid number of chromosomes of P. homarus was over 200 metaphases from ten lobsters, as 2n?=?58, and consisted of 16 acrocentric, seven metacentric, and six sub-metacentric chromosomes. The lobsters exposed to cupric ion at 9.55 and 19.1??g/l showed different types of chromosomal aberrations such as centromeric gaps, chromatid breaks, centromeric fusion, stickiness, ring chromosomes, and acrocentric association region. The frequency of aberrations increased with duration of exposure. In conclusion, it was suggested that cupric ion interacts with the spindle formation and consequently distorts the normal karyomorphology, indicating cytogenetic effect on lobster. PMID:21691798

  14. Observations on possible competitive displacement between populations of Aedes aegypti Linnaeus and Aedes albopictus Skuse in Calcutta*

    PubMed Central

    Gilotra, Sushil K.; Rozeboom, Lloyd E.; Bhattacharya, N. C.

    1967-01-01

    The possibility of competitive displacement in Calcutta between Aedes aegypti, a known vector of arboviruses, and A. albopictus, a suspected vector, was explored by general collections of immature stages from all types of breeding-places and by exposing oviposition traps in tenement houses, and gardens in urban, suburban, and rural environments. A. aegypti was predominant in houses and tenements in urban areas, but A. albopictus was not excluded. Both species occurred in about equal densities in small urban gardens. In suburban and rural areas, A. albopictus was predominant, or the only one of the two species present. It readily entered houses for the purpose of oviposition, especially in the absence of A. aegypti. It is suggested that the two species are exhibiting the effect of competitive displacement, with A. aegypti being favoured in urban premises and A. albopictus in the outdoor environment of suburban and rural areas, while in small urban gardens there is a state of equilibrium in which the densities of the two populations are about equal. The possibility cannot be excluded that eradication of A. aegypti in the city might lead to an increase in the A. albopictus population in houses and tenement dwellings. PMID:5301385

  15. Biological effects of environmentally relevant concentrations of the pharmaceutical Triclosan in the marine mussel Perna perna (Linnaeus, 1758).

    PubMed

    Cortez, Fernando Sanzi; Seabra Pereira, Camilo Dias; Santos, Aldo Ramos; Cesar, Augusto; Choueri, Rodrigo Brasil; Martini, Gisela de Assis; Bohrer-Morel, Maria Beatriz

    2012-09-01

    Triclosan (5-Chloro-2-(2,4-dichlorophenoxy) phenol) is an antibacterial compound widely employed in pharmaceuticals and personal care products. Although this emerging compound has been detected in aquatic environments, scarce information is found on the effects of Triclosan to marine organisms. The aim of this study was to evaluate the toxicity of a concentration range of Triclosan through fertilization assay (reproductive success), embryo-larval development assay (early life stage) and physiological stress (Neutral Red Retention Time assay - NRRT) (adult stage) in the marine sentinel organism Perna perna. The mean inhibition concentrations for fertilization (IC(50) = 0.490 mg L(-1)) and embryo-larval development (IC(50) = 0.135 mg L(-1)) tests were above environmental relevant concentrations (ng L(-1)) given by previous studies. Differently, significant reduction on NRRT results was found at 12 ng L(-1), demonstrating the current risk of the continuous introduction of Triclosan into aquatic environments, and the need of ecotoxicological studies oriented by the mechanism of action of the compound. PMID:22610038

  16. Improvement of lipid profile and antioxidant of hypercholesterolemic albino rats by polysaccharides extracted from the green alga Ulva lactuca Linnaeus

    Microsoft Academic Search

    Sherif Hassan; Sanaa Abd El-Twab; Mona Hetta; Basant Mahmoud

    2011-01-01

    Sulfated polysaccharides from Ulva lactuca were extracted in hot water and precipitated by ethanol then orally gavaged to rats fed on a hypercholesterolemic diet for 21 days to evaluate the antihypercholesterolemic and antioxidant actions. Atorvastatine Ca (Lipitor) was used as a reference drug. The intragastric administration of U. lactuca extract to hypercholesterolemic rats caused significant decrease of serum total lipids,

  17. First Molecular Identification and Phylogeny of a Babesia sp. from a Symptomatic Sow (Sus scrofa Linnaeus 1758)?

    PubMed Central

    Zobba, Rosanna; Parpaglia, Maria Luisa Pinna; Spezzigu, Antonio; Pittau, Marco; Alberti, Alberto

    2011-01-01

    Porcine babesiosis is a widespread yet overlooked disease causing economic losses in many regions of the world. To date, the etiological agent of porcine babesiosis has not been molecularly characterized. Here, we provide the first molecular characterization of a piroplasm detected in a symptomatic sow, phylogenetically closely related to the Ungulibabesids. Results pave the way for future molecular epidemiology studies. PMID:21490184

  18. Antioxidant and antibacterial activity of essential oil and extracts of bay laurel Laurus nobilis Linnaeus (Lauraceae) from Portugal

    Microsoft Academic Search

    C. Ramos; B. Teixeira; I. Batista; O. Matos; C. Serrano; N. R. Neng; J. M. F. Nogueira; M. L. Nunes; A. Marques

    2011-01-01

    Laurus nobilis L. is an aromatic plant frequently used as a spice in Mediterranean cookery and as a traditional medicine for the treatment of several infectious diseases. The aim of this study was to characterise the antibacterial and antioxidant activities of bay laurel essential oil (EO), ethanolic extract (EE) and hot\\/cold aqueous extract (AE). The major components detected in bay

  19. Antioxidant and antibacterial activity of essential oil and extracts of bay laurel Laurus nobilis Linnaeus (Lauraceae) from Portugal

    Microsoft Academic Search

    C. Ramos; B. Teixeira; I. Batista; O. Matos; C. Serrano; N. R. Neng; J. M. F. Nogueira; M. L. Nunes; A. Marques

    2012-01-01

    Laurus nobilis L. is an aromatic plant frequently used as a spice in Mediterranean cookery and as a traditional medicine for the treatment of several infectious diseases. The aim of this study was to characterise the antibacterial and antioxidant activities of bay laurel essential oil (EO), ethanolic extract (EE) and hot\\/cold aqueous extract (AE). The major components detected in bay

  20. Antimicrobial activities of the tissue extracts of Babylonia spirata Linnaeus, 1758 (Mollusca: Gastropoda) from Thazhanguda, southeast coast of India

    PubMed Central

    Periyasamy, N; Srinivasan, M; Balakrishnan, S

    2012-01-01

    Objective To investigate the antimicrobial activity of the tissue extracts of Babylonia spirata (B. spirata) against nine bacterial and three fungal pathogens. Methods Crude extract of gastropod was tested for inhibition of bacterial and fungal growth. Antibacterial assay was carried out by disc diffusion method and in vitro antifungal activity was determined against Czapex Dox agar. The antimicrobial activity was measured accordingly based on the inhibition zone around the disc impregnated with gastropod extract. Molecular size of muscle protein was determined using sodium dodecyl sulfate polyacrylamide gel electrophoresis (SDS-PAGE). And fourier transform infrared spectroscopy (FTIR) spectro photometry analysis was also studied. Results The maximum inhibition zone (12 mm) was observed against Pseudomonas aeruginosa in the crude ethanol extract of B. spirata and the minimum inhibition zone (2 mm) was noticed against Staphylococcus aureus in the crude methanol extract of B. spirata. Water extract of B. spirata showed the highest activity against Vibrio parahaemolyticus, Staphylococcus aureus and Candida albicans. Ethanol, acetone, methanol, chloroform and water extracts showed antimicrobial activity against almost all the bacteria and fungus. Compared with water extracts, ethanol and methanol extracts showed higher activity against all pathogens. The molecular weight of protein of the gastropod sample ranged from 2-110 kDa on SDS-PAGE. FTIR analysis revealed the presence of bioactive compounds signals at different ranges. Conclusions The research shows that the great medicinal value of the gastropod muscle of B. spirata may be due to high quality of antimicrobial compounds. PMID:23569831

  1. The real identity of Leptodira nycthemera Werner, 1901 from Ecuador: a junior synonym of Oxyrhopus petolarius (Linnaeus, 1758) (Serpentes, Dipsadidae)

    PubMed Central

    Costa, João Carlos Lopes; Kucharzewski, Christoph; Prudente, Ana Lúcia da Costa

    2015-01-01

    Abstract Leptodira nycthemera Werner, 1901, was described from a specimen collected in Ecuador. No information on the holotype was published after its description. In the most recent review of Leptodeira, Leptodira nycthemera was considered to be a synonym of Leptodeira annulata annulata, although the author emphasized that the holotype was lost and did not include the pholidotic data from the original description in his account of Leptodeira annulata annulata. Since this review, a number of authors have accepted this synonymy. Recently, analyzing specimens of Leptodeira in the Museum für Naturkunde, Berlin, Germany, we discovered the holotype of Leptodira nycthemera. This holotype is re-described here, and its correct identity is determined. Based on the analysis of meristic characters and the color of the holotype, we recognize Leptodira nycthemera as a junior synonym of Oxyrhopus petolarius.

  2. The feeding habits of three Mediterranean sea anemone species, Anemonia viridis (Forskål), Actinia equina (Linnaeus) and Cereus pedunculatus (Pennant)

    NASA Astrophysics Data System (ADS)

    Chintiroglou, Ch.; Koukouras, A.

    1992-03-01

    The feeding habits of the Mediterranean sea anemones Cereus pedunculatus, Actinia equina and Anemonia viridis were examined mainly by analysing their coelenteron contents. The three species are opportunistic omnivorous suspension feeders. Main source of food for A. viridis and C. pedunculatus are crustaceans (mainly amphipods and decapods, respectively), while for the midlittoral species A. equina, it is organic detritus. Using the same method, the temporal and spatial changes in the diet of A. viridis were examined. During the whole year, crustaceans seem to be the main source of food for A. viridis. The diet composition of this species, however, differs remarkably in space, possibly reflecting the different composition of the macrobenthic organismic assemblages in different areas. The data collected are compared with the limited bibliographical information.

  3. Effects of seven antifouling compounds on photosynthesis and inorganic carbon use in sugar kelp Saccharina latissima (Linnaeus).

    PubMed

    Johansson, Per; Eriksson, Karl Martin; Axelsson, Lennart; Blanck, Hans

    2012-10-01

    Macroalgae depend on carbon-concentrating mechanisms (CCMs) to maintain a high photosynthetic activity under conditions of low carbon dioxide (CO(2)) availability. Because such conditions are prevalent in marine environments, CCMs are important for upholding the macroalgal primary productivity in coastal zones. This study evaluated the effects of seven antifouling compounds-chlorothalonil, DCOIT, dichlofluanid, diuron, irgarol, tolylfluanid, and zinc pyrithione (ZnTP)-on the photosynthesis and CCM of sugar kelp (Saccharina latissima (L.)). Concentration-response curves of these toxicants were established using inhibition of carbon incorporation, whereas their effects over time and their inhibition of the CCM were studied using inhibition of O(2) evolution. We demonstrate that exposure to all compounds except ZnTP (< 1000 nM) resulted in toxicity to photosynthesis of S. latissima. However, carbon incorporation and O(2) evolution differed in their ability to detect toxicity from some of the compounds. Diuron, irgarol, DCOIT, tolylfluanid, and, to some extent, dichlofluanid inhibited carbon incorporation. Chlorothalonil did not inhibit carbon incorporation but clearly inhibited oxygen (O(2)) evolution. Photosynthesis showed only little recovery during the 2-h postexposure period. Inhibition of photosynthesis even increased after the end of exposure to chlorothalonil and tolylfluanid. Through changes in pH of the medium, toxic effects on the CCM could be studied isolated from photosynthesis effects. The CCM of S. latissima was inhibited by chlorothalonil, DCOIT, dichlofluanid, and tolylfluanid. Such inhibition of the CCM, or the absence thereof, deepens the understanding the mechanism of action of the studied compounds. PMID:22743627

  4. Spatial distribution of Lymnaeidae (Mollusca, Basommatophora), intermediate host of Fasciola hepatica Linnaeus, 1758 (Trematoda, Digenea) in Brazil.

    PubMed

    Medeiros, Camilla; Scholte, Ronaldo Guilherme Carvalho; D'ávila, Sthefane; Caldeira, Roberta Lima; Carvalho, Omar Dos Santos

    2014-01-01

    Snails of the family Lymnaeidae act as intermediate hosts in the biological cycle of Fasciola hepatica, which is a biological agent of fasciolosis, a parasitic disease of medical importance for humans and animals. The present work aimed to update and map the spatial distribution of the intermediate host snails of F. hepatica in Brazil. Data on the distribution of lymnaeids species were compiled from the Collection of Medical Malacology (Fiocruz-CMM, CPqRR), Collection of Malacology (MZUSP), "SpeciesLink" (CRIA) network and through systematic surveys in the literature. Our maps of the distribution of lymnaeids show that Pseudosuccinea columella is the most common species and it is widespread in the South and Southeast with few records in the Midwest, North and Northeast regions. The distribution of the Galba viatrix, G. cubensis and G. truncatula showed a few records in the South and Southeast regions, they were not reported for the Midwest, North and Northeast. In addition, in the South region there are a few records for G. viatrix and one occurrence of Lymnaea rupestris. Our findings resulted in the first map of the spatial distribution of Lymnaeidae species in Brazil which might be useful to better understand the fasciolosis distribution and delineate priority areas for control interventions. PMID:24879003

  5. Microbiological survey for selected bacterial pathogens in European storm petrel ( Hydrobates pelagicus , Linnaeus 1758) from Grosa Island (Murcia, Southeastern Spain)

    Microsoft Academic Search

    Mónica G. Candela; Gonzalo G. Barberá; Angel Sallent; Luis León

    2008-01-01

    The current work shows the first step in the knowledge on the health status of European storm petrel (Hydrobates pelagicus) colony inhabiting Grosa Island (Murcia, SE Spain). We performed a screening about the bacterial pathogens carried by them\\u000a (among the infectious agents checked, bacteria of the orders Mollicutes and Chlamydiales, and the genera Salmonella are of main interest) and compare

  6. Diverse Microbiota Identified in Whole Intact Nest Chambers of the Red Mason Bee Osmia bicornis (Linnaeus 1758)

    PubMed Central

    Keller, Alexander; Grimmer, Gudrun; Steffan-Dewenter, Ingolf

    2013-01-01

    Microbial activity is known to have profound impact on bee ecology and physiology, both by beneficial and pathogenic effects. Most information about such associations is available for colony-building organisms, and especially the honey bee. There, active manipulations through worker bees result in a restricted diversity of microbes present within the colony environment. Microbial diversity in solitary bee nests remains unstudied, although their larvae face a very different situation compared with social bees by growing up in isolated compartments. Here, we assessed the microbiota present in nests and pre-adults of Osmia bicornis, the red mason bee, by culture-independent pyrosequencing. We found high bacterial diversity not comparable with honey bee colonies. We identified a variety of bacteria potentially with positive or negative interactions for bee larvae. However, most of the other diverse bacteria present in the nests seem to originate from environmental sources through incorporated nest building material and stored pollen. This diversity of microorganisms may cause severe larval mortality and require specific physiological or symbiotic adaptations against microbial threats. They may however also profit from such a diverse environment through gain of mutualistic partners. We conclude that further studies of microbiota interaction in solitary bees will improve the understanding of fitness components and populations dynamics. PMID:24205188

  7. Diverse microbiota identified in whole intact nest chambers of the red mason bee Osmia bicornis (Linnaeus 1758).

    PubMed

    Keller, Alexander; Grimmer, Gudrun; Steffan-Dewenter, Ingolf

    2013-01-01

    Microbial activity is known to have profound impact on bee ecology and physiology, both by beneficial and pathogenic effects. Most information about such associations is available for colony-building organisms, and especially the honey bee. There, active manipulations through worker bees result in a restricted diversity of microbes present within the colony environment. Microbial diversity in solitary bee nests remains unstudied, although their larvae face a very different situation compared with social bees by growing up in isolated compartments. Here, we assessed the microbiota present in nests and pre-adults of Osmia bicornis, the red mason bee, by culture-independent pyrosequencing. We found high bacterial diversity not comparable with honey bee colonies. We identified a variety of bacteria potentially with positive or negative interactions for bee larvae. However, most of the other diverse bacteria present in the nests seem to originate from environmental sources through incorporated nest building material and stored pollen. This diversity of microorganisms may cause severe larval mortality and require specific physiological or symbiotic adaptations against microbial threats. They may however also profit from such a diverse environment through gain of mutualistic partners. We conclude that further studies of microbiota interaction in solitary bees will improve the understanding of fitness components and populations dynamics. PMID:24205188

  8. Ecotype differentiation in the face of gene flow within the diving beetle Agabus bipustulatus (Linnaeus, 1767) in northern Scandinavia.

    PubMed

    Drotz, Marcus K; Brodin, Tomas; Saura, Anssi; Giles, Barbara E

    2012-01-01

    The repeated occurrence of habitat-specific polyphyletic evolved ecotypes throughout the ranges of widely distributed species implies that multiple, independent and parallel selection events have taken place. Ecological transitions across altitudinal gradients over short geographical distances are often associated with variation in habitat-related fitness, these patterns suggest the action of strong selective forces. Genetic markers will therefore contribute differently to differences between ecotypes in local hybrid zones. Here we have studied the adaptive divergence between ecotypes of the water beetle Agabus bipustulatus along several parallel altitudinal gradients in northern Scandinavia. This water beetle is well known for its remarkable morphological variation associated with mountain regions throughout the western Palaearctic. Two morphological ecotypes are recognised: a montane type with reduced flight muscles and a lowland type with fully developed muscles. Using a multilocus survey of allozyme variation and a morphological analysis with landmark-based morphometrics, across thirty-three populations and seven altitudinal gradients, we studied the local adaptive process of gene flow and selection in detail. Populations were sampled at three different elevations: below, at and above the tree line. The results indicate that the levels of divergence observed between ecotypes in morphology and allele frequencies at ?-Glycerophosphate dehydrogenase relative to those shown by neutral molecular markers reflects local diversifying selection in situ. Four main lines of evidence are shown here: (1) A repeated morphological pattern of differentiation is observed across all altitudinal transects, with high reclassification probabilities. (2) Allele and genotype frequencies at the ?-Gpdh locus are strongly correlated with altitude, in sharp contrast to the presumable neutral markers. (3) Genetic differentiation is two to three times higher among populations across the tree line than among populations at or below. (4) Genetic differentiation between ecotypes within independent mountain areas is reflected by different sets of allozymes. PMID:22348080

  9. EVALUATION OF THE MOLLUSCICIDAL POTENTIAL OF HYDROALCOHOLIC EXTRACTS OF Jatropha gossypiifolia Linnaeus, 1753 ON Biomphalaria glabrata (Say, 1818)

    PubMed Central

    Pereira, Adalberto Alves; França, Clícia Rosane Costa; Oliveira, Dorlam's da Silva; Mendes, Renato Juvino de Aragão; Gonçalves, José de Ribamar Santos; Rosa, Ivone Garros

    2014-01-01

    The action of extracts from the stem, leaves, and fruit of Jatropha gossypiifolia on Biomphalaria glabrata was studied by analyzing survival, feeding capacity and oviposition ability. The extracts were obtained by macerating the plant parts in 92% ethanol, which were then evaporated until a dry residue was obtained and phytochemically studied. The molluscicidal activity on B. glabrata was investigated using the procedures recommended by WHO (1965). The amount of food ingested and oviposition were measured during each experiment. The extract of leaves from J. gossypiifolia was shown to be a strong molluscicidal agent, causing 100% mortality of B. glabrata, even in the lowest concentration tested, of 25 ppm. Regarding the fruit extract, there was variation in the mortality, depending on the concentration used (100, 75, 50 and 25 ppm). The snails that were in contact with the fruit extract had significant reduction in feeding and number of embryos in comparison to the control. The stem extract did not present molluscicidal activity nor had any influence on the feeding and oviposition abilities of B. glabrata, in the concentrations tested. In conclusion, the extracts of leaves and fruits of J. gossypiifolia investigated in this work show molluscicidal effect and may be sources of useful compounds for the schistosomiasis control. PMID:25351545

  10. Bioavailability of heavy metals in fresh water Tilapia nilotica (Oreachromis niloticus Linnaeus, 1758): potential risk to fishermen and consumers.

    PubMed

    El-Sadaawy, Manal M; El-Said, Ghada F; Sallam, Neama A

    2013-01-01

    The study was undertaken to assess the accumulation of some heavy metals (Cr, Co, Cu, Ni, Zn, Pb and Cd) in different tissues (muscle, gills, heart, liver, brain, bone and skin) of Tilapia nilotica. It is one of the most edible fish species in Egypt and was collected from a commercial fish farm in order to evaluate their potential risk to fishermen and consumers. This fish farm is fed with discharged water containing agricultural, industrial, sewage and domestic wastes. The length-weight relation and condition factor calculation of Tilapia nilotica samples showed a significant linear regression (r(2) = 0.920) and an average condition factor of 4.1 g/cm(3). This indicated that the health status for the studied fish samples was good. Metal pollution index (MPI) values for the determined heavy metals in the different tissues reflected that the muscle was the only tissue that had the lowest content. Provisional Tolerable Weekly Intake (PTWI) values for the investigated heavy metals were lower than those reported for the permissible limits. The data were evaluated by using ANOVA statistical analysis. For appraising the human health risk effects of heavy metals in fish muscle, estimated dietary intake (EDI) and hazard quotient (HQ) were determined. HQ levels indicated that Cr and Co were the only heavy metals among the determined ones that had values more than unity. Also, their relative contributions in fish consumptions were Cr> Co> Pb> Ni> Cu> Cd> Zn. The highest average HQ value of chromium determined in this study referred to the possible adverse effects of Cr on human health. Accordingly, the potential public health risks from dietary exposure to hazardous contaminants in fish species from fish farms must be continually subjected to research, regulation and debate. PMID:23431978

  11. [Parasite fauna and features of the parasite community structure in the minnow Phoxinus phoxinus (Linnaeus) from Yenisei and Kacha rivers].

    PubMed

    German, Iu K; Pronin, N M

    2010-01-01

    Phoxinus phoxinus is a species widely distributed throughout Palaearctic and is a good model for investigation of parasite communities. Species composition and structure of parasite communities in the minnow from the streams if different types, namely Yenisei river near Krasnoyarsk City and its left affluent Kacha River, were examined. Indices of Shannon, Simpson, and Berger-Parker were used to describe the component parasite communities. Twenty five parasite species of seven classes were revealed, and ectoparasite were found to be dominating among them. The host-specific parasite species Paratrichodina phoxini (Infusoria), Dactylogyrus borealis (Monogenea), Parahemiurus merus and Diplostomum phoxini (Digenea) constitute the peculiarity of the parasite fauna in minnow. Parasite community of minnow in the Kacha river is the most various one. It is caused by the following factors--favorable temperature conditions, composition of ichthyofauna, and a high density of fish population in the Kacha river. Metacercaria of Diplostomum phoxini, the specific parasites of minnow's brain, are dominating in both streams. PMID:20349627

  12. [Mitochondrial cytochrome b gene variation in brown bear (Ursus arctos Linnaeus, 1758) from southern part of Russian Far East].

    PubMed

    Gus'kov, V Yu; Sheremet'eva, I N; Seredkin, I V; Kryukov, A P

    2013-12-01

    The genetic variability of brown bear Ursus arctos from the southern part of the Russian Far East was first ex- amined based on the variations in the mitochondrial DNA cytochrome b sequence. The presence of two phylogenetic groups of haplotypes described previously for other parts of the species range was demonstrated. Part of the samples belonged to the haplotype group distributed across the whole range, while another part belonged to the rare group previously only reported for Japan and Alaska. These findings partially clarify the pattern of brown-bear colonization on the territory of the Russian Far East and Japan. PMID:25438600

  13. [Mitochondrial cytochrome b gene variation in brown bear (Ursus arctos Linnaeus, 1758) from southern part of Russian Far East].

    PubMed

    2013-12-01

    The genetic variability of brown bear Ursus arctos from the southern part of the Russian Far East was first ex- amined based on the variations in the mitochondrial DNA cytochrome b sequence. The presence of two phylogenetic groups of haplotypes described previously for other parts of the species range was demonstrated. Part of the samples belonged to the haplotype group distributed across the whole range, while another part belonged to the rare group previously only reported for Japan and Alaska. These findings partially clarify the pattern of brown-bear colonization on the territory of the Russian Far East and Japan. PMID:25508131

  14. 75 FR 45675 - Notice of Permit Applications Received Under the Antarctic Conservation Act of 1978 (Pub. L. 95-541)

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-08-03

    ...Glacier (ASPA 131), Linnaeus Terrance (ASPA 138), and Botany Bay (ASPA 154) to review the sites' management plans and...Glacier (ASPA 131), Linnaeus Terrance (ASPA 138), and Botany Bay (ASPA 154) Dates: September 1, 2010 to August 31,...

  15. Distribution, relative abundance and species composition of shrimp, crabs and fish in the intake area, discharge canal and cooling lake of the Cedar Bayou generating station, Baytown, Texas

    E-print Network

    St. Clair, Lou Ann

    1978-01-01

    (Valenciennes) ~$ nodus foetens (Linnaeus) Arius felis (Linnaeus) Bagre marinus (Mitchill) ~hth p ' ' ( I S qg) ' ( lh c~d ~ L 'psd Fundulus grandis Baird and Firard Gambusia affinis (Baird and Girard) I ' ~I Membras martinica (Valenciennes) ll 'd' h...

  16. Most people are familiar with the beautiful and often strikingly

    E-print Network

    Hill, Jeffrey E.

    to describe in this profile; however, many books are dedicated to the topic. Taxonomy Goldfish, Carassius auratus (Linnaeus 1758), and common carp, Cyprinus carpio (Linnaeus 1758), are members of the family

  17. Conepatus leuconotus (Carnivora: Mephitidae) JERRY W. DRAGOO AND STEVEN R. SHEFFIELD

    E-print Network

    Hayssen, Virginia

    , not Viverra Linnaeus, 1758. Mustela: Daudin in Lace´pe`de, 1802:163. Not Mustela Linnaeus, 1758. Gulo: Humboldt, 1812:347. Not Gulo Pallas, 1780. Gulo: Illiger, 1815:109, 121. Part, not Gulo Pallas, 1780

  18. Oecologia (2000) 124:156165 Springer-Verlag 2000 Abstract We studied the association between the honey-

    E-print Network

    Oliveira, Paulo S.

    2000-01-01

    ant density near the treehoppers affects the spatial distribution of parasitoid wasps on the host spiders, syrphid flies, and parasitoid wasps) on the host plant. The data further showed that ant of G. xiphias) on the K. Del-Claro Departamento de Biociências, Universidade Federal de Uberlândia, C

  19. OIKOS 68: 202-206. Copenhagen 1993 Ant-Homoptera interaction: do alternative sugar sources distract

    E-print Network

    Oliveira, Paulo S.

    tending ants? Kleber Del-Claro and Paulo S. Oliveira Del-Claro, K. and Oliveira, P. S. 1993. Ant xiphias ) when an alternative sugar source was available on the host plant (Didymopanax vinosum). Results of extrafloral nectaries. K. Del-Claro, Depto de Biociências, C.P 593, Univ. Federal de Uberlândia, 38400

  20. 216 (2010/3) Territoire, Paysage, Anthropisation, Perception, Conservation, Restauration

    E-print Network

    Boyer, Edmond

    'un agrosystème. Le cas de la Guifette noire Chlidonias niger (Linnaeus, 1758) dans le Marais poitevin au sein d'un agrosystème. Le cas de la Guifette noire Chlidonias niger (Linnaeus, 1758) dans le cas de la Guifette noire CHLIDONIAS NIGER (Linnaeus, 1758) dans le Marais poitevin Alain Thomas 11

  1. The effects of temperature in the life cycle of two consecutive generations of the cuttlefish Sepia officinalis (Linnaeus, 1758), cultured in the Algarve (South Portugal)

    Microsoft Academic Search

    Pedro M. Domingues; António Sykes; José P. Andrade

    2002-01-01

    We are presently culturing the 4th generation of thecuttlefish, Sepia officinalis in our laboratory. A firstgeneration (F1) was grown from eggs collected from the wild (Ria Formosa–South Portugal) during the summer, at mean temperatures of 27°C ± 3°. In the present study, a second generation(F2), originated from eggs laid in the laboratory by females from F1 wascultured between the start

  2. Effects of feeding live or frozen prey on growth, survival and the life cycle of the cuttlefish, Sepia officinalis (Linnaeus, 1758)

    Microsoft Academic Search

    Pedro Domingues; António Sykes; Anne Sommerfield; José P. Andrade

    2003-01-01

    The effects of feeding live or frozen grass shrimp (Palaemonetes varians) to the cuttlefish, Sepia officinalis, were determined in two experiments. During Experiment I, two populations of 30 cuttlefish (aged 90 days old) were fed either\\u000a live or frozen grass shrimp. Cuttlefish fed live shrimp grew larger, matured earlier, had a shorter life cycle (255 days)\\u000a than the ones fed

  3. Effects of the passage in chicks on the development of Ascaris lumbricoides Linnaeus, 1758 (Syn. A. lumbricoides var. suum, A. suum, A. suis 

    E-print Network

    Manuel, Mauro Fernando

    1966-01-01

    , i. 65 ma on the iith? i. /5 Isa the 13th aM 2 2G ma on the i5th days after lnfsotion. Yn Ides (;:~ $9%6~, :. snd 0, i9ipI ~prsnt, 195Z, i953I idahols, i956aI aod 0isen and EoDey, i960), rabbits {ionIIon and . ""ester, i9i9, " Yoeldda, i9i9), lashs... thro~ the digestive tract of chicks on rhe percentage of eabryonation of ~s &ciao!gQ ova i. ~ . ~ "". ~ ~ "". ~ . 4"& ~ ~ e t5 TABLg 0F C(kiTE&TB (Continued) ~eats of passage in oh1oks on the infestivity and growth of ~ Q+~g~ in rabbits...

  4. Absorbed Dose Rate Due to Intake of Natural Radionuclides by Tilapia Fish (Tilapia nilotica,Linnaeus, 1758) Estimated Near Uranium Mining at Caetité, Bahia, Brazil

    Microsoft Academic Search

    Wagner De S. Pereira; Alphonse Kelecom; Delcy De Azevedo Py Júnior

    2008-01-01

    The uranium mining at Caetité (Uranium Concentrate Unit-URA) is in its operational phase. Aiming to estimate the radiological environmental impact of the URA, a monitoring program is underway. In order to preserve the biota of the deleterious effects from radiation and to act in a pro-active way as expected from a licensing body, the present work aims to use an

  5. Absorbed Dose Rate Due to Intake of Natural Radionuclides by Tilapia Fish (Tilapia nilotica,Linnaeus, 1758) Estimated Near Uranium Mining at Caetite´, Bahia, Brazil

    Microsoft Academic Search

    Wagner de S. Pereira; Alphonse Kelecom; Delcy de Azevedo Py Ju´nior

    2008-01-01

    The uranium mining at Caetite´ (Uranium Concentrate Unit—URA) is in its operational phase. Aiming to estimate the radiological environmental impact of the URA, a monitoring program is underway. In order to preserve the biota of the deleterious effects from radiation and to act in a pro-active way as expected from a licensing body, the present work aims to use an

  6. Effectiveness of Gambusia holbrooki fish in domestic water containers and controlling Aedes aegypti larvae (Linnaeus, 1762) in southwest Saudi Arabia (Jeddah).

    PubMed

    Gamal, Zakia A

    2012-04-01

    The objective of this study was to estimate the survival of Gambusia holbrooki (Cyprinodontiformes: Poeciliidae) fishin domestic containers in Jeddah, as well as its effectiveness in the control of immature A.aegypti. The use of G. holbrooki compared to Bacillus thuringiensis israelensis (B.t.i.)was donein domestic containers. In a first home visit, G. holbrooki or B.t.i were applied to water containers. Two follow-up visits were conducted after 3-4 & 5-6 months to assess the presence of viable fish in the containers and infestation by larvae. G. holbrooki fish were still present in 97.6% of containers 45-60 days after application. The infestation rate was significantly higher (P < 0.001) in the B.t.i group (IR ratio=21.60, 95% CI: 6.46-72.28). In deposits where the fish remained, efficacy was 85% better than B.t.i. The permanence of fish was higher in concrete tanks (48.5%) located outside the house (47.5%) and at ground level (53.3%). PMID:22662590

  7. Comparison of conservative DNA extraction methods for two Galliformes: grey partridge ( Perdix perdix italica, Hartert 1917) and red-legged partridge ( Alectoris rufa , Linnaeus 1758)

    Microsoft Academic Search

    L. Lucentini; L. Gigliarelli; M. E. Puletti; L. Volpi; F. Panara

    2010-01-01

    Grey partridge and Red-legged partridge are Galliformes needing special conservation strategies. Reintroduction may represent\\u000a conservation solutions solely with the support of an in-depth genetic and ecologic evaluation, particularly of grey partridge,\\u000a of which an Italian subspecies was described. Protocols for conservative DNA isolation are fundamental to study breeders and\\u000a wild samples. For these reasons, two DNA extraction protocols on different

  8. Description of a hair follicle mite (Acari: Demodecidae) parasitic in the earless seal family Phocidae (Mammalia: Carnivora) from the harbor seal Phoca vitulina Linnaeus, 1758

    Microsoft Academic Search

    Clifford E. Desch; Murray D. Dailey; Pamela Tuomi

    2003-01-01

    Demodex phocidin. sp. is described (all life stages) from a captive Atlantic harbor seal, Phoca vitulina, from Seward, Alaska. This is the first description of a demodecid hair follicle mite from the earless seal family Phocidae. The mites reside in the sebaceous glands of the hair follicles and are associated with persistent areas of hyperkeratosis.

  9. Survival, growth and reproduction of non-indigenous Nile tilapia, Oreochromis niloticus (Linnaeus 1758). I. Physiological capabilities in various temperatures and salinities

    USGS Publications Warehouse

    Schofield, Pamela J.; Peterson, Mark S.; Lowe, Michael R.; Brown-Peterson, Nancy J.; Slack, William T.

    2011-01-01

    The physiological tolerances of non-native fishes is an integral component of assessing potential invasive risk. Salinity and temperature are environmental variables that limit the spread of many non-native fishes. We hypothesised that combinations of temperature and salinity will interact to affect survival, growth, and reproduction of Nile tilapia, Oreochromis niloticus, introduced into Mississippi, USA. Tilapia withstood acute transfer from fresh water up to a salinity of 20 and survived gradual transfer up to 60 at typical summertime (30°C) temperatures. However, cold temperature (14°C) reduced survival of fish in saline waters ?10 and increased the incidence of disease in freshwater controls. Although fish were able to equilibrate to saline waters in warm temperatures, reproductive parameters were reduced at salinities ?30. These integrated responses suggest that Nile tilapia can invade coastal areas beyond their point of introduction. However, successful invasion is subject to two caveats: (1) wintertime survival depends on finding thermal refugia, and (2) reproduction is hampered in regions where salinities are ?30. These data are vital to predicting the invasion of non-native fishes into coastal watersheds. This is particularly important given the predicted changes in coastal landscapes due to global climate change and sea-level rise.

  10. Butyltin compounds, sterility and imposex assessment in Nassarius reticulatus (Linnaeus, 1758), prior to the 2008 European ban on TBT antifouling paints, within Basque ports and along coastal areas

    Microsoft Academic Search

    J. Germán Rodríguez; Itziar Tueros; Ángel Borja; Javier Franco; J. Ignacio García Alonso; Joxe Mikel Garmendia; Iñigo Muxika; Cristina Sariego; Victoriano Valencia

    2009-01-01

    Levels of imposex (superimposition of male characters, upon females) and the presence of sterile females are assessed in the gastropod Nassarius reticulatus (L.), at 35 locations in the Basque Country. At 18 of these localities, organotin bioaccumulation (tributyltin (TBT); dibutyltin; monobutyltin) was evaluated, using isotope dilution GC–ICP–MS. Higher imposex levels and TBT body burden were found in confined harbours, with

  11. Anti-inflammatory and anti-angiogenic effects of flavonoids isolated from Lycium barbarum Linnaeus on human umbilical vein endothelial cells.

    PubMed

    Wu, Wen-Bin; Hung, Dian-Kun; Chang, Fung-Wei; Ong, Eng-Thaim; Chen, Bing-Huei

    2012-10-01

    Anti-inflammatory and anti-angiogenic effects of flavonoids isolated from Lycium barbarum fruits, a traditional Chinese medicine, on human umbilical vein endothelial cells (HUVECs) were investigated. Initially, flavonoids were extracted with 80% ethanol and separated using a Cosmosil 140 C18-OPN column, with the acidic fraction eluted with deionized water being composed of chlorogenic acid, caffeoyl quinic acid, caffeic acid and p-coumaric acid and the neutral fraction eluted with methanol composed of quercetin-diglycoside, rutin and kaempferol-O-rutinoside. Flavonoid extract was effective in inhibiting expression of intercellular adhesion molecule-1 (ICAM-1) and vascular cell adhesion molecule (VCAM-1) induced by TNF-? in HUVECs. The RT-PCR analysis indicated that ICAM-1 mRNA induced by TNF-? was inhibited by flavonoid extract. The flavonoid extract attenuated TNF-?-induced I?B phosphorylation as well as NF-?B, p65 and p50 translocation from cytosol to nucleus, through inhibition on TNF-?- and H(2)O(2)-induced intracellular reactive oxygen species (ROS) production. For the anti-angiogenic study, the flavonoid extract inhibited vascular endothelial growth factor (VEGF)-induced cell proliferation and migration in HUVECs, as well as angiogenesis. However, the flavonoid extract did not inhibit VEGF signaling. Surprisingly, HUVECs adhesion to the extracellular matrix was compromised and adhesion-induced signaling was retarded by the flavonoid extract. PMID:22751795

  12. Distribution and genetic diversity of the terrestrial slugs Arion lusitanicus Mabille, 1868 and Arion rufus (Linnaeus, 1758) in Poland based on mitochondrial DNA.

    PubMed

    Soroka, Marianna; Koz?owski, Jan; Wiktor, Andrzej; Ka?uski, Tomasz

    2009-01-01

    The slugs Arion lusitanicus and Arion rufus inhabit ecologically degraded areas and are serious vegetation pests. In recent years, new localities of these species have been found in various parts of Poland. Here we study the morphology of 90 specimens from 9 populations of slugs. The morphology of the genital system allowed for the identification of 60 A. lusitanicus specimens from 6 populations and 30 A. rufus individuals from another 3 localities. In order to describe their genetic diversity at the level of the individual, population, and species, we compared sequences of the mitochondrial cytochrome oxidase subunit I (cox1) gene. The morphological analysis revealed that each of the studied populations comprised a single species, which was also confirmed by the molecular assay. We obtained 674-bp sequences of the cox1 gene for each species that showed a total of eight haplotypes. The genetic diversity of A. lusitanicus individuals ranged from 0.5% to 2.1%, whereas that of A. rufus was twice as low: 0.4-1.0%. The difference between the two species within the cox1 gene was at the level of 12%. Three A. lusitanicus and two A. rufus populations were found to be monomorphic. Large inter-population variability was found within each of the studied species, which suggests that the Polish populations of A. lusitanicus may have originated from repeated, separate introductions arriving from various parts of Europe. PMID:19459464

  13. Use of sodium dodecyl sulfate and zinc sulfate as reference substances for toxicity tests with the mussel Perna perna (Linnaeus, 1758) (Mollusca: Bivalvia).

    PubMed

    Jorge, R A D L V C; Moreira, G S

    2005-06-01

    Effects of anthropogenic pollution have been observed at different trophic levels in the oceans, and toxicity tests constitute one way of monitoring these alterations. The present assay proposes the use of two reference substances, sodium dodecyl sulfate (SDS) and zinc sulfate, for Perna perna larvae. This common mussel on the Brazilian coast is used as a bioindicator and is of economic interest. The chronic static embryo-larval test of short duration (48 h) was employed to determine the NOEC, LOEC, and IC50 for SDS and zinc sulfate, as well as the coefficient of variation. Salinity, pH and un-ionized ammonia (NH3) and dissolved oxygen (DO) concentrations were measured to monitor water quality. The results demonstrated that the main alterations in veliger larvae are the development of only one shell, protruded mantle, malformed shell, formation of only part of a valve, clipped edges, uneven sizes and presence of a concave or convex hinge. NOEC values were lower than 0.25 mg L(-1) for zinc sulfate and 0.68 mg L(-1) for SDS. The coefficient of variation was 17.63% and 2.50% for zinc sulfate and SDS, respectively. PMID:15883100

  14. The metabolic responses and acid–base status after feeding, exhaustive exercise, and both feeding and exhaustive exercise in Chinese catfish ( Silurus asotus Linnaeus)

    Microsoft Academic Search

    Ke-Gui Li; Zhen-Dong Cao; Jiang-Lan Peng; Shi-Jian Fu

    2010-01-01

    Feeding and exhaustive exercise are known to elevate metabolism. However, acid–base status may be oppositely affected by the\\u000a two processes. In this study, we first investigated the acid–base response of Chinese catfish to feeding (the meal size was\\u000a about 8% of body mass) to test whether an alkaline tide (a metabolic alkalosis created by gastric HCl secretion after feeding)\\u000a would

  15. The parasitic fauna of the European bison (Bison bonasus) (Linnaeus, 1758) and their impact on the conservation. Part 1. The summarising list of parasites noted.

    PubMed

    Karbowiak, Grzegorz; Demiaszkiewicz, Aleksander W; Pyziel, Anna M; Wita, Irena; Moskwa, Bo?ena; Werszko, Joanna; Bie?, Justyna; Go?dzik, Katarzyna; Lachowicz, Jacek; Cabaj, W?adys?aw

    2014-09-01

    During the current century, 88 species of parasites have been recorded in Bison bonasus. These are 22 species of protozoa (Trypanosoma wrublewskii, T. theileri, Giardia sp., Sarcocystis cruzi, S. hirsuta, S. hominis, S. fusiformis, Neospora caninum, Toxoplasma gondii, Cryptosporidium sp., Eimeria cylindrica, E. subspherica, E. bovis, E. zuernii, E. canadensis, E. ellipsoidalis, E. alabamensis, E. bukidnonensis, E. auburnensis, E. pellita, E. brasiliensis, Babesia divergens), 4 trematodes species (Dicrocoelium dendriticum, Fasciola hepatica, Parafasciolopsis fasciolaemorpha, Paramphistomum cervi), 4 cestodes species (Taenia hydatigena larvae, Moniezia benedeni, M. expansa, Moniezia sp.), 43 nematodes species (Bunostomum trigonocephalum, B. phlebotomum, Chabertia ovina, Oesophagostomum radiatum, O. venulosum, Dictyocaulus filaria, D.viviparus, Nematodirella alcidis, Nematodirus europaeus, N. helvetianus, N. roscidus, N. filicollis, N. spathiger, Cooperia oncophora, C. pectinata, C. punctata, C. surnabada, Haemonchus contortus, Mazamastrongylus dagestanicus, Ostertagia lyrata, O. ostertagi, O. antipini, O. leptospicularis, O. kolchida, O. circumcincta, O. trifurcata, Spiculopteragia boehmi, S. mathevossiani, S. asymmetrica, Trichostrongylus axei, T. askivali, T. capricola, T. vitrinus, Ashworthius sidemi, Onchocerca lienalis, O. gutturosa, Setaria labiatopapillosa, Gongylonema pulchrum, Thelazia gulosa, T. skrjabini, T. rhodesi, Aonchotheca bilobata, Trichuris ovis), 7 mites (Demodex bisonianus, D. bovis, Demodex sp., Chorioptes bovis, Psoroptes equi, P. ovis, Sarcoptes scabiei), 4 Ixodidae ticks (Ixodes ricinus, I. persulcatus, I. hexagonus, Dermacentor reticulatus), 1 Mallophaga species (Bisonicola sedecimdecembrii), 1 Anoplura (Haematopinus eurysternus), and 2 Hippoboscidae flies (Lipoptena cervi, Melophagus ovinus). There are few monoxenous parasites, many typical for cattle and many newly acquired from Cervidae. PMID:25119348

  16. The parasitic fauna of the European bison (Bison bonasus) (Linnaeus, 1758) and their impact on the conservation. Part 2. The structure and changes over time.

    PubMed

    Karbowiak, Grzegorz; Demiaszkiewicz, Aleksander W; Pyziel, Anna M; Wita, Irena; Moskwa, Bo?ena; Werszko, Joanna; Bie?, Justyna; Go?dzik, Katarzyna; Lachowicz, Jacek; Cabaj, W?adys?aw

    2014-09-01

    During the last century the recorded parasite fauna of Bison bonasus includes 88 species. These are 22 species of protozoa, 4 trematode species, 4 cestode species, 43 nematode species, 7 mites, 4 Ixodidae ticks, 1 Mallophaga species, 1 Anoplura, and 2 Hippoboscidae flies. There are few monoxenous parasites, the majority of parasites are typical for other Bovidae and Cervidae species and many are newly acquired from Cervidae. This is an evident increased trend in the parasite species richness, in both the prevalence and intensity of infections, which is associated with the bison population size, host status (captive breeding or free-ranging) and the possibility of contact with other ruminant species. In light of the changes to parasite species richness during the last decades, special emphasis shall be given to new parasite species reported in European bison, their pathogenicity and potential implications for conservation. PMID:25119349

  17. Plant food resources exploited by Blue-and-Yellow Macaws (Ara ararauna, Linnaeus 1758) at an urban area in Central Brazil.

    PubMed

    Santos, A A; Ragusa-Netto, J

    2014-05-01

    In this study, we described the food plants available to Blue-and-Yellow Macaws (Ara ararauna), its feeding habits and the relationship between these parameters with feeding niche breadth. We established four transects, each one 12 km long, to sample fruiting plants and the feeding habits of this macaw (monthly 40 h, of observations), at the urban areas of Três Lagoas (Mato Grosso do Sul, Brazil). During all studied months, macaws foraged for palm fruits, mainly Syagrus oleracea and Acrocomia aculeata fruit pulp, both available all year, as well as Caryocar brasiliense and Anacardium occidentale seeds, in the wet season. The year-round feeding activity of macaws suggests Três Lagoas city as an adequate feeding area. The permanent availability of plant food resources, potentially, resulted from the diverse fruiting patterns of exotic and, mainly, native plant species, which provided a variety of suitable fruit patches. PMID:25166327

  18. The effect of dietary exogenous digestive enzymes on ingestion, assimilation, growth and survival of gilthead seabream ( Sparus aurata , Sparidae, Linnaeus) larvae

    Microsoft Academic Search

    S. Kolkovski; A. Tandler; G. Wm. Kissil; A. Gertler

    1993-01-01

    The success of microdiets commonly used in the cultivation of marine fish larvae is limited to serving as partial replacements\\u000a for live food. This limited success is thought to be associated with a reduced digestive ability due to an incompletely developed\\u000a digestive system. The enhanced growth obtained from live food has been partially attributed to the digestive enzyme activity\\u000a of

  19. The development and demise of a Medieval forest-meadow system at Linnaeus' birthplace in southern Sweden: implications for conservation and forest history

    Microsoft Academic Search

    Matts Lindbladh; Richard Bradshaw

    1995-01-01

    The rapid industrialisation of agriculture and forestry during the last century has contributed to a transformation of the forested landscape in southern Sweden. Palaeoecological investigation revealed how the Medieval forest-meadow system was created about 900 years ago from a deciduous forest type that had been rather stable for the previous 3000 years. The study site was a forest hollow close

  20. INVESTIGATION OF THE EUROPEAN POND TURTLE (EMYS ORBICULARIS LINNAEUS, 1758) POPULATION LIVING IN A BACKWATER NEAR THE RIVER TISZA, SOUTHERN HUNGARY

    Microsoft Academic Search

    E. Balázs

    A European pond turtle population living in a polluted backwater has been investigated since 2002. Turtles were collected with steel cage-traps and then this marked and measured. The average population size estimated by the Frequency of Capture method was 1,187 and by the Petersen-Schnabel method 740, and the density of the population was 142-228 turtles\\/hectare or 569-913 turtles\\/km respectively. The

  1. Nouvelles citations de deux espèces reliques paléarctiques, Emys orbicularis Linnaeus, 1758 et Vipera latastei Boscá, 1878 dans la Péninsule Tingitane (Rif occidental, Maroc)

    Microsoft Academic Search

    Mohamed MEDIANI; Mohamed AMEZIAN; Mohamed IBN TATTOU; Abdelaziz BENHOUSSA; Hamid RGUIBI IDRISSI; Mohammed Aziz

    2009-01-01

    New quotes of two relict Palaearctic species: Vipera latastei andEmys orbicularisin the Tangier Peninsula. In the framework of an environmental impact assessment related to a wind farm project in Jbel Haouch Ben Kre’aa (ca. 30 km south of Tangier) a field work (23-30 May 2009) was carried out in order toinventory the amphibians and reptiles of the region. During this

  2. A Stock Assessment of the Blue Swimming Crab Portunus pelagicus (Linnaeus, 1758) for Sustainable Management in Kung Krabaen Bay, Gulf of Thailand.

    PubMed

    Kunsook, Chutapa; Gajaseni, Nantana; Paphavasit, Nittharatana

    2014-08-01

    A stock assessment of blue swimming crabs, Portunus pelagicus was conducted with crab gill nets and collapsible crab traps at Kung Krabaen Bay, in the eastern Gulf of Thailand, from 2008 to 2009. Several key indicators show that P. pelagicus population is in crisis. Fishing mortality shows an increase to 4.14. The exploitation rate is 0.71, higher than the optimal value of 0.38. The size of the mature females has also decreased from 8.10±0.39 cm to 7.52±1.14 cm. The average fecundity is 0.572×10(6)±0.261×10(6) eggs per batch, and the sex ratio (male:female) is 1:0.92. Based on these results, a sustainable management program for P. pelagicus was proposed as follows: (i) closing the bay during the spawning season, (ii) restoration of the Enhalus acoroides seagrass beds, (iii) restocking crab larvae in the bay and (iv) educating and networking all stakeholders to develop a better understanding of the ecology of the crab to support sustainable fishery management in Kung Krabaen Bay. PMID:25210587

  3. Evaluation of dietary exposure to minerals, trace elements and heavy metals from the muscle tissue of the lionfish Pterois volitans (Linnaeus 1758).

    PubMed

    Hoo Fung, Leslie A; Antoine, Johann M R; Grant, Charles N; Buddo, Dayne St A

    2013-10-01

    Twenty-five samples of Pterois volitans caught in Jamaican waters were analyzed for 25 essential, non-essential and toxic elements using Graphite Furnace Atomic Absorption Spectrophotometry (GF-AAS), Inductively Coupled Plasma Optical Emission Spectroscopy (ICP-OES) and Instrumental Neutron Activation Analysis (INAA). The mean values for calcium (355 mg/kg), copper (107 ?g/kg), iron (0.81 mg/kg), potassium (3481 mg/kg), magnesium (322 mg/kg), manganese (0.04 mg/kg), selenium (0.47 mg/kg), sodium (700 mg/kg) and zinc (4.46 mg/kg) were used to estimate dietary intake. The percentage contribution to provisional tolerable weekly intake for a 70 kg male and a 65 kg female were also estimated for the toxic elements arsenic (1.28% M, 1.38% F), cadmium (0.26% M. 0.28% F), mercury (3.85% M, 4.15% F) and lead (0.17% M, 0.18% F). To further assess the risk of mercury toxicity and the role of mitigation provided by selenium, selenium-mercury molar ratios were calculated for all samples. All samples were shown to have a molar excess of selenium. In addition the suggested selenium health benefit value was calculated, and was positive for all samples. It was concluded that P. volitans appears to contribute modestly to mineral and trace element nutrition, while not being a significant contributor to dietary exposure of toxic elements. PMID:23891700

  4. [A comparative analysis of the helminth fauna of kittiwake Rissa tridactyla (Linnaeus, 1758) and glaucous gull Larus hyperboreus Gunnerus, 1767 from different parts of the Barents Sea].

    PubMed

    Kuklin, V V; Galaktionov, K V; Galkin, A K; Marasaev, S F

    2005-01-01

    The article is based on the results of helminthological observations made on kittiwake Rissa tridactyla and glaucous gull Larus hyperboreus in 1991-2001 in different areas of the Barents Sea (Eastern Murman coast, Franz Josef Land, Novaya Zemlya, Spitzbergen). 18 helminth species (2 trematodes, 11 cestodes, 4 nematodes, and 2 acanthocephalans) were recorded in the kittiwakes and 19 (3 trematodes, 9 cestodes, 5 nematodes and 2 acanthocephalans) species were recorded in the glaucous gulls. Trematodes were absent in the birds collected at the Franz Josef Land and the northern island of Novaya Zemlya. 3 trematode species, namely Gymnophallus sp. (somateria?), Microphallus sp. 1 (M. pseudopygmaeus), and Cryptocotyle lingua were found in the glaucous gulls of western Spitzbergen. It was supposed that the life cycles of these parasites can be completed there. On the other hand, coastal ecosystems of Arctic archipelagoes turn out to be favourable for the transmission of some cestodes. This is closely connected with the regional traits in the marine bird diet, namely the increase of the amphipod (intermediate hosts of hymenolepidids and some dilepidids) and polar cod (supposed second intermediate host for some tetrabothriids) portion in Arctic. As a result, cestodes are the base of the helminth fauna of kittiwakes and glaucous gulls of the Barents Sea, by their species richness, prevalence and abundance. Nematodes and acanthocephalans were represented by a few species with low infection intensity. The main ecological factors affected the regional difference in the species richness and abundance of the helminths parasitising kittiwakes and glaucous gulls in the Barents Sea are proposed. Those are regional climatic features and regional traits in the behaviour and food priorities of birds, and also the distribution of the helminths intermediate hosts, invertebrates and fishes. The phenomenon of host specificity lowering with respect to the definitive host was recorded in some cestode species (Microsomacanthus diorchis, M. microsoma, and Arctotaenia tetrabothrioides) on the border of their distribution ranges, the coastal ecosystems of Arctic. PMID:16396393

  5. Biogeography of helminth parasitism in Lemmus Link (Arvicolinae), with the description of Paranoplocephala fellmani n. sp. (Cestoda: Anoplocephalidae) from the Norwegian lemming L. lemmus (Linnaeus).

    PubMed

    Haukisalmi, V; Henttonen, H

    2001-05-01

    We describe the gastrointestinal helminth fauna of true lemmings (Lemmus spp., Arvicolinae) based on published and original material throughout the Holarctic range of these hosts. According to the existing data, the helminth fauna of true lemmings consists of three widespread and/or locally common taxa: Hymenolepis horrida (sensu lato) (Hymenolepididae), Anoplocephaloides lemmi (Anoplocephalidae) and Heligmosomoides spp. (Heligmosomidae). Despite the taxonomic boundaries and ancient phylogenetic splits in the hosts, there are no major faunistic differences for parasites within western (Siberian) L. sibiricus and L. bungei, and eastern (North American) L. trimucronatus throughout their distribution range. In contrast, the Norwegian lemming L. lemmus, which is a Fennoscandian endemic and closely related to the western populations of L. sibiricus, has only a single host-specific helminth, the cestode Paranoplocephala fellmani n. sp. (Anoplocephalidae). We describe the new species and show that it differs consistently from related species by its long and slender cirrus-sac. However, there are also a number of other significant differences, e.g., P. fellmani n. sp. and Andrya primordialis in Tamiasciurus hudsonicus (Sciuridae) evidently have a unique (sub)type of uterine development among Andrya/Paranoplocephala spp. Because P. fellmani n. sp. was also found to occur in Alaska (host L. trimucronatus), this species seems to follow the same biogeographical pattern as the other specialist helminths of Lemmus. We suggest alternative explanations for the absence of three major helminth taxa in the Norwegian lemming in Fennoscandia. PMID:11389326

  6. Metazoan Parasites of Clarias lazera Valenciennes, 1840 and Carassius carassius (Linnaeus, 1758) from Kepez I Hydro Electric Power Plant Loading Pond, Antalya, Turkey

    Microsoft Academic Search

    Erhan Soylu; Yilmaz Emre

    In this study, metazoan parasites of Clarias lazera and Carassius carassius from Kepez I hydro-electric power plant loading pond were investigated. A total of 38 C. lazera and 89 C. carassius were studied. Fish samples were caught in May, August and November 2003 and February 2004. Quadriacanthus clariadis (Paperna, 1961) (Monogenea), Polyonchobothrium magnum (Zmecev, 1936) (Cestoidea) and Orientocreadium sp. (Trematoda)

  7. Characterization of 13 microsatellite loci for the deep-sea coral, Lophelia pertusa (Linnaeus 1758), from the western North Atlantic Ocean and Gulf of Mexico

    USGS Publications Warehouse

    Morrison, C.L.; Eackles, M.S.; Johnson, R.L.; King, T.L.

    2008-01-01

    A suite of 13 polymorphic tri- and tetranucleotide microsatellite loci were isolated from the ahermatypic deep-sea coral, Lophelia pertusa. Among 51 individuals collected from three disjunct oceanic regions, allelic diversity ranged from six to 38 alleles and averaged 9.1 alleles per locus. Observed heterozygosity ranged from 9.1 to 96.8% and averaged 62.3% in the Gulf of Mexico population. For some loci, amplification success varied among collections, suggesting regional variation in priming site sequences. Four loci showed departures from Hardy-Weinberg equilibrium in certain collections which may reflect nonrandom mating. ?? 2008 Blackwell Publishing Ltd.

  8. Feeding and nutritional ecology of the sea urchins Echinometra lucunter (Linnaeus, 1758) and Arbacia punctulata (Lamarck, 1816) Echinodermata: Echinoidea): the importance of animal foods 

    E-print Network

    Pestovic, Jennifer Beth

    1995-01-01

    species on the nearby jetty. Determination of digestion coefficients of E. lucunter for three different diets showed that absorption of protein was more efficient from invertebrate (crab and squid) material than from algae or mixed food items. Absorption...

  9. Aqueous Extract from Hibiscus sabdariffa Linnaeus Ameliorate Diabetic Nephropathy via Regulating Oxidative Status and Akt/Bad/14-3-3? in an Experimental Animal Model

    PubMed Central

    Wang, Shou-Chieh; Lee, Shiow-Fen; Wang, Chau-Jong; Lee, Chao-Hsin; Lee, Wen-Chin; Lee, Huei-Jane

    2011-01-01

    Several studies point out that oxidative stress maybe a major culprit in diabetic nephropathy. Aqueous extract of Hibiscus sabdariffa L. (HSE) has been demonstrated as having beneficial effects on anti-oxidation and lipid-lowering in experimental studies. This study aimed at investigating the effects of Hibiscus sabdariffa L. on diabetic nephropathy in streptozotocin induced type 1 diabetic rats. Our results show that HSE is capable of reducing lipid peroxidation, increasing catalase and glutathione activities significantly in diabetic kidney, and decreasing the plasma levels of triglyceride, low-density lipoprotein (LDL) and increasing high-density lipoprotein (HDL) value. In histological examination, HSE improves hyperglycemia-caused osmotic diuresis in renal proximal convoluted tubules (defined as hydropic change) in diabetic rats. The study also reveals that up-regulation of Akt/Bad/14-3-3? and NF-?B-mediated transcription might be involved. In conclusion, our results show that HSE possesses the potential effects to ameliorate diabetic nephropathy via improving oxidative status and regulating Akt/Bad/14-3-3? signaling. PMID:19965962

  10. Cytochrome P450Dependent Mixed Function Oxidases (MFO) System Dynamics During the Poly Aromatic Hydrocarbon (PAH) Metabolism in Green Mussel Perna Viridis (Linnaeus, 1758)

    Microsoft Academic Search

    C. Amutha; G. Bupesh; R. Ramesh; P. Kavitha; P. Subramanian

    2009-01-01

    Polyaromatic hydrocarbons (PAH's) are the prominent and most common pollutants in aquatic environments, particularly in marine water. The discharge of hydrocarbons into the sea might be of great concern for marine species living close to dumping sites. Therefore, toxicological properties of hydrocarbons released into marine environments need to be evaluated. PAH pollution potential may be predicted by assessing the induction

  11. The occurrence of helminth parasites in the gastrointestinal of catfish (Silurus glanis Linnaeus 1758) from the Zarrine-roud river, Iran

    PubMed Central

    Yakhchali, Mohammad; Tehrani, Ali-Asghar; Ghoreishi, Mozafar

    2012-01-01

    This investigation was undertaken to verify the prevalence of helminths parasites in the gastrointestinal tract of catfish. A total number of 116 catfish (Silurus glanis) were collected from Zarrine-roud river and examined for helminths. Fish were examined after washing contents of gastrointestinal tract and observed for the presence of helminths using a stereo microscope and a light microscope. Results indicated that 18.96% of the examined catfish were infected with digenean trematodes including Orientocreadium siluri (27%), Crowcrocoecum skrjabini (39%), and cestode Bothriocephalus gowkongensis (34%). All the parasites were found in the intestine. Mid-gut followed by foregut appeared to be the most commonly infected parts of the alimentary tract of hosts. The results showed that there was a significant correlation between infection rate, catfish body size, and weight (P < 0.05). PMID:25653761

  12. A second generation genetic map of the bumblebee Bombus terrestris (Linnaeus, 1758) reveals slow genome and chromosome evolution in the Apidae

    Microsoft Academic Search

    Eckart Stolle; Lena Wilfert; Regula Schmid-Hempel; Paul Schmid-Hempel; Michael Kube; Richard Reinhardt; Robin FA Moritz

    2011-01-01

    BACKGROUND: The bumblebee Bombus terrestris is an ecologically and economically important pollinator and has become an important biological model system. To study fundamental evolutionary questions at the genomic level, a high resolution genetic linkage map is an essential tool for analyses ranging from quantitative trait loci (QTL) mapping to genome assembly and comparative genomics. We here present a saturated linkage

  13. [Investigations of ectoparasite fauna of some fish species (Cyprinus carpio Linnaeus, 1758; Cobitis simplicispinna Hanko, 1924) from Lake Ak?ehir (Konya)].

    PubMed

    Kartal, Kür?at; Oztürk, Mehmet O?uz

    2009-01-01

    In this study, the presence of metazoan ectoparasites on 7 Cyprinus carpio and 90 Cobitis simplicispinna from Lake Aksehir, Turkey were investigated between July 2004 and June 2005. Three parasite species were identified on the host fishes: Gyrodactylus elegans Nordmann, 1832 (42.9%, 293.6+/-482.0 parasite/fish) and Dactylogyrus extensus Mueller and Van Cleave, 1932 (85.7%, 9.8+/-6.8), were found on gills of C. carpio, and Gyrodactylus cobitis Bychowsky, 1933 (68.9%, 15.6+/-18.5) on gills and fins of C. simplicispinna. Of these species, G. cobitis is a new record for parasite fauna of Turkey. In addition, minimum-maximum and mean intensity of parasites and infection prevalence were determined using seasonal data and size distribution of the host fish. PMID:19367558

  14. Action of Brazilian propolis on hematological and serum biochemical parameters of Blue-fronted Amazons (Amazona aestiva, Linnaeus, 1758) in captivity.

    PubMed

    Silva, Cínthia R B; Putarov, Thaila C; Fruhvald, Erika; Destro, Flavia C; Marques Filho, Wolff C; Thomazini, Camila M; Barbosa, Tatiana S; Orsi, Ricardo O; Siqueira, Edson R

    2014-07-01

    The present study aimed to evaluate the effect of propolis use on hematological and serum biochemical parameters in Blue-fronted Amazons (Amazona aestiva). For this, 12 adult birds were distributed randomly into individual cages, divided into treatments with different propolis levels (A = 0.0%; B = 0.5%; and C = 1.0%), in 3 distinct phases (I, II, and III), with 15-d duration for phases I and III and 30 d for phase II, totaling 60 d. In phases I and III, all birds received treatment A ration, and in phase II received A, B, or C (4 birds per treatment). At the end of each phase, blood was collected for biochemical and hematological evaluations. The variables were analyzed by ANOVA (P < 0.05). Results suggest that 0.5% propolis reduced lactate dehydrogenase levels, whereas treatment B augmented hemoglobin concentrations and eosinophil count. It is concluded that 0.5% propolis improves levels of lactate dehydrogenase, hemoglobin, and eosinophils. PMID:24864289

  15. Hybrid incompatibility is consistent with a hybrid origin of Heliconius heurippa Hewitson from its close relatives, Heliconius cydno Doubleday and Heliconius melpomene Linnaeus.

    PubMed

    Salazar, C A; Jiggins, C D; Arias, C F; Tobler, A; Bermingham, E; Linares, M

    2005-03-01

    Abstract Shared ancestral variation and introgression complicates the reconstruction of phylogenetic relationships among closely related taxa. Here we use overall genomic compatibility as an alternative estimate of species relationships in a group where divergence is rapid and genetic exchange is common. Heliconius heurippa, a butterfly species endemic to Colombia, has a colour pattern genetically intermediate between H. cydno and H. melpomene: its hindwing is nearly indistinguishable from that of H. melpomene and its forewing band is an intermediate phenotype between both species. This observation has lead to the suggestion that the pattern of H. heurippa arose through hybridization. We present a genetic analysis of hybrid compatibility in crosses between the three taxa. Heliconius heurippa x H. cydno and female H. melpomene x male H. heurippa yield fertile and viable F1 hybrids, but male H. melpomene x female H. heurippa crosses yield sterile F1 females. In contrast, Haldane's rule has previously been detected between H. melpomene and H cydno in both directions. Therefore, H. heurippa is most closely related to H. cydno, with some evidence for introgression of genes from H. melpomene. The results are compatible with the hypothesis of a hybrid origin for H. heurippa. In addition, backcrosses using F1 hybrid males provide evidence for a large Z(X)-chromosome effect on sterility and for recessive autosomal sterility factors as predicted by Dominance Theory. PMID:15715831

  16. [The bipolarity of the genetic structure of communities of the crucian carp (Carassius linnaeus, 1758) as a reflection of paradoxal reproductive relationships].

    PubMed

    Mezhzherin, S V; Kokodiy, S V; Kulish, A V; Pukhtaevitch, P P

    2015-01-01

    An analysis of 133 populations of Carasiius spp. from water bodies in Ukraine showed their polyspecific structure: 62% of individuals of the studied 3453 specimens. turned out to be bisexual goldfishes C. auratus, 25%. were unisexual Prissian carps C. gibelio, 6% accounted for the aboriginal species crucian carp C. carassius, and 6% were hybrids C. auratus x C. carassius. In this case a clear trend has been revealed towards the formation of homogeneous alternative populations, specifically: either C. auratus, or C. gibelio. Individuals of C. carassius and the hybrids C. auratus x C. carassius typically comprise an admixture in various populations. The cause of the bipolar distribution of individuals of C. auratus and C. gibelio between various water bodies is the instability of mixed populations as far as individuals of C. auratus very quickly replace females of C. gibelio due to their low reproductive potential. PMID:26030976

  17. FAJA DOS CUBRES, SAO JORGE: A CASE FOR COASTAL CONSERVATION AND THE FIRST RECORD OF Ruppia maritima Linnaeus (MONOCOTYLEDONES; RUPPIACEAE) FROM THE ACORES

    Microsoft Academic Search

    Brian Morton; J. C. Britton; A. M. Frias Martins

    Fajl dos Cubres on the north shore of the island of Slo Jorge, Aqores, comprises a shallow (=2 m) lagoon contained within a coastal platform and protected from the sea by a boulder rampart. Hitherto considered lacus- trine, it is here shown that the lagoon is influenced primarily by fresh- water to the southeast, but is also influenced by seawater

  18. [Freshwater Pearl mussels of the genus Margaritifera (Mollusca: Bivalvia) described as M. elongata (Lamarck, 1819) and M. borealis (Westerlund, 1871) should be classified with M. margaritifera (Linnaeus, 1758)].

    PubMed

    Sergeeva, I S; Bolotov, I N; Bespalaia, Iu V; Makhrov, A A; Bukhanova, A L; Artamonova, V S

    2008-01-01

    The shells of Pearl mussels from the basins of the Solza, Keret', and Umba rivers flowing into the White Sea have been measured to determine the ratio of shell convexity to its maximum height. This ratio is the main character that, according to Bogatov et al. (2003), allows one to distinguish between three species of the genus Margaritifera: M. margaritifera, M. elongata, and M. borealis. It has been found that the above ratio gradually increases as the shell grows. Therefore, this character is unsuitable for species diagnosis, the more so that no hiatus in it between the three forms of pearl mussels has been revealed in any of the samples studied. On this basis, it may be concluded that Northern Europe, including Russia, is inhabited by only one species of pearl mussels, M. margaritifera. PMID:18491570

  19. Topography and ultrastructure of the tegument of Aphallus tubarium (Rodolphi, 1819) Poche, 1926 (Digenea: Cryptogonimidae), intestinal parasite of the common Dentex dentex (Linnaeus 1758) from Valinco Gulf.

    PubMed

    Antonelli, Laetitia; Quilichini, Yann; Foata, Joséphine; Marchand, Bernard

    2014-10-01

    The tegument ultrastructure of the intestinal fluke Aphallus tubarium was studied for the first time with the use of scanning and transmission electron microscopy. New details on morphology were recorded. The ultrastructural study revealed that the tegument of A. tubarium had a syncytial organization with a distal cytoplasm lying over a basal matrix and cytons. The surface of the tegument is covered with pectinate spines arranged quincuncially. As anterior-posterior differences were observed, particular attention was given to spines. Spines decrease in size and density from the anterior part of body to posterior part. Two types of sensory structures were identified, uniciliated and dome-shaped. Type 1 sensory receptors were outgrowths bearing groups of papillae with shorter and rigid apical seta visible on the anterior part of body surface, encircling the worm. Type 2 sensory receptors was dome-shaped papillae devoid of cilia, found mainly around the oral sucker. Diagrams of spines and sensory receptors were made to help in understanding the nature of these structures. Surface morphology may prove to be useful in distinguishing Aphallus spp with other Cryptogonimidae. PMID:25236270

  20. Seroprevalence of Toxoplasma gondii (Nicole & Manceaux, 1909) and retroviral status of client-owned pet cats (Felis catus, Linnaeus, 1758) in Rio de Janeiro, Brazil.

    PubMed

    Bastos, Bethânia Ferreira; Brener, Beatriz; Gershony, Liza; Willi, Liliane; Labarthe, Norma; Pereira, Cássia; Mendes-De-Almeida, Flavya

    2014-01-01

    Cats, as definitive host, play an important role in the transmission of Toxoplasma gondii. This study aimed to establish the seroprevalence of anti-T. gondii immunoglobulins G and M, and determine the frequency of oocysts in the feces of the domestic cat population in Rio de Janeiro, Brazil. We also aimed to study the association between T. gondii infection and age, sex, breed, lifestyle, diet and retroviral infection. A total of 108 cats were included in the study and fecal samples of 54 of those cats were obtained. Only 5.6% of the cats were seropositive for anti-T. gondii immunoglobulins using the indirect hemagglutination test. None of the 54 cats presented oocysts in their fecal samples. Although not statistically significant, males, mixed-breed, free-roaming and cats aged two years and older were found to be more exposed. Age, lifestyle and the use of litter boxes were found to play an important role as risk factors. Anemia and retroviral infections were independent of T. gondii infection. No antibodies were detected in the majority of cats (94.4%), indicating that those cats had never been exposed to the parasite and, therefore, once infected, they could present the risk of shedding large numbers of oocysts into the environment. PMID:24878997

  1. Development and function of pearl-sacs grown from regenerated mantle graft tissue in the black-lip pearl oyster, Pinctada margaritifera (Linnaeus, 1758).

    PubMed

    Kishore, Pranesh; Southgate, Paul C

    2015-08-01

    Current pearl grafting techniques were developed in the early 1900s and have changed little since. They involve the sacrifice of donor pearl oysters to provide graft tissue (saibo) that is implanted into host oysters. This study assessed the feasibility of using regenerated graft tissue for pearl production in the 'black-lip' pearl oyster, Pinctada margaritifera. Twelve days after grafting with regenerated graft tissue, there was complete encapsulation of the nucleus by the fully developed pearl-sac and the first layer of organic matrix had been secreted. Sixteen days after grafting, the pearl-sac was completely integrated with host tissue. The epithelial cells in the pearl-sac continued to secrete the organic matrix layer but there were no signs of nacre deposition at this stage. However, after three months of culture, nuclei in oysters grafted with regenerated mantle tissue were completely covered with nacre. The average nacre thickness on pearls produced from regenerated (0.547 ± 0.01 mm, n = 8) and normal (0.532 ± 0.01 mm, n = 8) mantle tissue did not differ significantly (p > 0.05). Nacre secretion rates, over the 80 day period subsequent to pearl-sac formation were 6.84 ± 0.1 ?m day(-1) and 6.66 ± 0.1 ?m day(-1) for oysters grafted with regenerated and normal mantle tissue, respectively. These means were not significantly different (p = 0.258). Our results clearly show that regenerated mantle tissue can function successfully as saibo for pearl production in P. margaritifera. This finding could provide significant benefits to pearl farmers and a basis for further development of current pearl grafting practices. PMID:25982400

  2. Effects of dietary onion (Allium cepa) powder on growth, innate immune response and hemato-biochemical parameters of beluga (Huso huso Linnaeus, 1754) juvenile.

    PubMed

    Akrami, Raza; Gharaei, Ahmad; Mansour, Majid Razeghi; Galeshi, Ali

    2015-08-01

    The present study was aimed at determining the effects of dietary onion powder on growth, innate immune response and hemato-biochemical parameters of beluga juvenile (Huso huso). Basal diets containing onion powder 0 (control), 0.5 and 1% of feed were fed to beluga juvenile. At the end of the experiment, the highest weight gain (WG%) and specific growth rate (SGR) was observed in group fed with 1% onion (P < 0.05). There were no significant difference (P > 0.05) about feed conversion ratio (FCR) in treatment groups that fed diets containing various levels of onion powder. After 8 weeks, serum lysozyme activity, superoxide dismutase activity (SOD), respiratory burst activity and serum total immunoglobulin (Ig) showed a significant increase in treatment group with 1% onion powder compared to other groups (P < 0.05). The group fed 1% onion showed a significantly increases in the number of erythrocytes (RBC), leucocyte (WBC), haematocrit (Hct) levels compared to the control group (P < 0.05). Haemoglobin, monocyte, lymphocyte and neutrophil had no significant change (P > 0.05) in treatment groups and control. The analysis of AST and LDH levels showed a significant decrease in 1% onion compared to the control and 0.5% onion diet (P < 0.05), while ALT and ALP levels were not influenced (P > 0.05). The blood glucose, total protein, triglyceride, cholesterol, albumin and globulin levels were lower in treated groups compared with the control (P < 0.05). The results of this study demonstrated that dietary onion powder could be an improvement in growth, hematological parameters and immune function of beluga juvenile. PMID:26067169

  3. Effects of the passage in chicks on the development of Ascaris lumbricoides Linnaeus, 1758 (Syn. A. lumbricoides var. suum, A. suum, A. suis

    E-print Network

    Manuel, Mauro Fernando

    1966-01-01

    ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ t ~ ~ ~ ~ ~ ~ ~ ~ t ~ ~ ~ 0 ~ ~ ~ ~ 50 Infeotivity and growth of ~ ~ 1n oh1eks . . . . ?50 Noon increase 1n sine of ~ larvae (in peroent) at 2 days interval in the lungs and livers of ch1eks and oontrol rabbits . . . . . ?. . . ~. . . . . . . ." ~ . ~ . . ". . 53... ~ average inorease and deorease in siss of larvae (in miorons) 1n the lungs and livers of chioks and rabb1ts from days 2 to 12 post- infeotion ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ 54' Clinioal...

  4. Reconciling Deep Calibration and Demographic History: Bayesian Inference of Post Glacial Colonization Patterns in Carcinus aestuarii (Nardo, 1847) and C. maenas (Linnaeus, 1758)

    PubMed Central

    Marino, Ilaria A. M.; Pujolar, Jose Martin; Zane, Lorenzo

    2011-01-01

    A precise inference of past demographic histories including dating of demographic events using Bayesian methods can only be achieved with the use of appropriate molecular rates and evolutionary models. Using a set of 596 mitochondrial cytochrome c oxidase I (COI) sequences of two sister species of European green crabs of the genus Carcinus (C. maenas and C. aestuarii), our study shows how chronologies of past evolutionary events change significantly with the application of revised molecular rates that incorporate biogeographic events for calibration and appropriate demographic priors. A clear signal of demographic expansion was found for both species, dated between 10,000 and 20,000 years ago, which places the expansions events in a time frame following the Last Glacial Maximum (LGM). In the case of C. aestuarii, a population expansion was only inferred for the Adriatic-Ionian, suggestive of a colonization event following the flooding of the Adriatic Sea (18,000 years ago). For C. maenas, the demographic expansion inferred for the continental populations of West and North Europe might result from a northward recolonization from a southern refugium when the ice sheet retreated after the LGM. Collectively, our results highlight the importance of using adequate calibrations and demographic priors in order to avoid considerable overestimates of evolutionary time scales. PMID:22164307

  5. Biochemical compounds' dynamics during larval development of the carpet-shell clam Ruditapes decussatus (Linnaeus, 1758): effects of mono-specific diets and starvation

    NASA Astrophysics Data System (ADS)

    Matias, Domitília; Joaquim, Sandra; Ramos, Margarete; Sobral, Paula; Leitão, Alexandra

    2011-09-01

    Successful larval growth and development of bivalves depend on energy derived from internal (endotrophic phase) and external (exotrophic phase) sources. The present paper studies survival, growth and biochemical changes in the early developmental stages (from egg to pediveliger) of the clam Ruditapes decussatus in order to characterize the nutritional requirements and the transition from the endotrophic to the exotrophic phase. Three different feeding regimes were applied: starvation and two mono-specific microalgal diets ( Isochrysis aff galbana and Chaetoceros calcitrans). A comparison between fed and unfed larvae highlighted the importance of egg lipid reserves, especially neutral lipids, during a brief endotrophic phase of embryonic development (first 2 days after fertilization). Egg reserves, however, may energetically contribute to the maintenance of larvae beyond the embryonic development. In fed larvae, the endotrophic phase is followed by a mixotrophic phase extending to days 5-8 after fertilization and a subsequent exotrophic phase. Metamorphosis starts around day 20. The intense embryonic activities are supported by energy derived from lipids, mainly from neutral lipids, and the metamorphic activities are supported by energy derived essentially from proteins accumulated during the planktonic phase and depend on the nutritional value of diets. The diet of I. aff galbana proves to be more adequate to R. decussatus larval rearing. The results provide useful information for the successful production of R. decussatus aquaculture.

  6. Hypoxia induced altered expression of heat shock protein genes (Hsc71, Hsp90? and Hsp10) in Indian Catfish, Clarias batrachus (Linnaeus, 1758) under oxidative stress.

    PubMed

    Mohindra, Vindhya; Tripathi, Ratnesh K; Yadav, Prabhaker; Singh, Rajeev K; Lal, Kuldeep K

    2015-07-01

    Heat shock proteins (Hsps) are typically associated with stress response and tolerance. The Indian catfish, Clarias batrachus, is a freshwater air-breathing hypoxia tolerant teleost and is potentially important catfish species for aquaculture and for its economic value as food. The present study aimed at determining the transcriptional response of three Hsps, CbHsc71, CbHsp90? and CbHsp10 in hypoxia tolerant Indian catfish, C. batrachus, under experimental and natural hypoxia. The expression profile of above three genes were studied under different periods of hypoxia, through qRT-PCR. Primers were designed from ESTs obtained through SSH libraries constructed from hypoxia treated fishes. The Hsp10 ESTs and deduced protein was in silico characterized for its ORF and for its physical and chemical properties, respectively, using GeneScan, blastp, scanprosite, superfamily and other softwares. A phylogenetic tree was constructed based on deduced amino acid sequences of Hsc71, Hsp90?, Hsp90? of Homo sapiens and other fishes along with CbHsp10 protein in MEGA4. The deduced protein sequences of CbHsp10 was found to have characteristic Hsp10 family signatures, and it is proposed for inclusion of methionine in the consensus sequences of Hsp10 family signature, after the "proline" residue. At transcription level, these genes were found to be differentially regulated under hypoxia stress, in different tissues of C. batrachus. The CbHsc71 and CbHsp90? were up-regulated after short and long-term hypoxia, whereas CbHsp10 was significantly down-regulated after short-term hypoxia. The differential expression of these Hsps may play a role in protection and survival under hypoxia induced oxidative stress in C. batrachus. PMID:25663092

  7. [New data on the phylogeography and genetic diversity of the brown bear Ursus arctos Linnaeus, 1758 of northeastern Eurasia (mtDNA control region polymorphism analysis)].

    PubMed

    Salomashkina, V V; Kholodova, M V; Tiuten'kov, O Iu; Moskvitina, N S; Erokhin, N G

    2014-01-01

    An analysis of polymorphism of the fragment of the control region of mitochondrial DNA of 53 tissue samples of the brown bear Ursus arctos from several regions of the eastern part of Russia was carried out. It was found that most of the described haplotypes belong to cluster 3a, the most common in Eurasia, and do not form regionally specific haplogroups. However, among the bears from Western and Eastern Siberia, as well as the island of Kunashir, three haplotypes were identified, which are close to the haplogroup typical of Eastern Hokkaido bears. The assumption was made of the existence in Siberia and the Far East of one or more Pleistocene refugia. PMID:25735154

  8. Comparative study of pikeperch Sander lucioperca (Percidae; Linnaeus, 1758) eggs and larvae from wild females or from captive females fed chopped marine fish.

    PubMed

    Ben Khemis, I; Hamza, N; Ben Messaoud, N; Ben Rached, S; M'Hetli, M

    2014-04-01

    Morphometric characteristics, proximal composition and fatty acids profiles of eggs and larvae at hatching and mouth opening were studied as indicators for assessing the potential differences between spawns obtained from wild or captive females of pikeperch (Sander lucioperca). Captive females were acclimated to hatchery conditions and fed to satiation with chopped marine fish for more than a year, guaranteeing that captivity covered the full cycle of gonad maturation. The number of larvae obtained from the spawnings did not differ between captive and wild females, but both mean diameter and mean weight of the eggs collected from the captive females were significantly larger. Proximal compositions were similar in eggs and larvae from both groups, but fatty acids (FA) profiles showed striking differences: polyunsaturated FA consisted mainly of linoleic acid in eggs and larvae from wild females, while they consisted mainly of long chains of n-3 series in eggs and larvae from captive females. The diet of captive females largely modified the FA profiles of eggs and of hatching or mouth opening larvae, but did not affect the growth potential of early larvae, demonstrating that they were able to satisfy their early physiological needs regardless of the striking differences in their FA. PMID:23995948

  9. Egg morphology update based on new chorionic data of Potamanthus luteus (Linnaeus), Ephemera danica Müller and Oligoneuriella rhenana (Imhoff) (Insecta, Ephemeroptera) obtained by scanning electron microscopy

    Microsoft Academic Search

    NICOLÁS UBERO-PASCAL; M. ANGELS PUIG

    2007-01-01

    The chorionic patterns of Ephemeroptera eggs are very diverse and these have often been used for taxonomic and sys- tematic purposes. In a great number of species, including Potamanthus luteus, Ephemera danica and Oligoneuriella rhenana, these egg features have been studied using light microscopy. However, current trends in egg morphology stud- ies use scanning electron microscopy (SEM), so that the

  10. Attracting predators without falling prey: chemical camouflage protects honeydew-producing treehoppers from ant predation.

    PubMed

    Silveira, Henrique C P; Oliveira, Paulo S; Trigo, José R

    2010-02-01

    Predaceous ants are dominant organisms on foliage and represent a constant threat to herbivorous insects. The honeydew of sap-feeding hemipterans has been suggested to appease aggressive ants, which then begin tending activities. Here, we manipulated the cuticular chemical profiles of freeze-dried insect prey to show that chemical background matching with the host plant protects Guayaquila xiphias treehoppers against predaceous Camponotus crassus ants, regardless of honeydew supply. Ant predation is increased when treehoppers are transferred to a nonhost plant with which they have low chemical similarity. Palatable moth larvae manipulated to match the chemical background of Guayaquila's host plant attracted lower numbers of predatory ants than unchanged controls. Although aggressive tending ants can protect honeydew-producing hemipterans from natural enemies, they may prey on the trophobionts under shortage of alternative food resources. Thus chemical camouflage in G. xiphias allows the trophobiont to attract predaceous bodyguards at reduced risk of falling prey itself. PMID:20001602

  11. The component helminth community in six sympatric species of Ardeidae.

    PubMed

    Navarro, Pilar; Lluch, Javier; Font, Enrique

    2005-08-01

    We studied the helminth communities in 6 sympatric species of Ardeidae (Ixobrychus minutus (Linnaeus, 1766), Nycticorax nycticorax (Linnaeus, 1758), Bubulcus ibis (Linnaeus, 1758), Egretta garzetta (Linnaeus, 1766), Ardea cinerea (Linnaeus, 1758), and Ardea purpurea (Linnaeus, 1766)) from "La Albufera de Valencia," Spain. The survey revealed 13 species of helminth parasites: 5 digeneans, 2 cestodes, and 6 nematodes. The component helminth communities of the Ardeidae examined are depauperate and conform to the pattern typically found in isolationist communities, probably because of their high trophic dependence on a few prey species. Evenness was positively correlated with richness and abundance, but host body weight was not correlated with the number of helminth species or with the total number of helminths. Ardea cinerea is more heavily infected than E. garzetta by Apharyngostrigea cornu, and B. ibis is more heavily infected than both Ardea cinerea and E. garzetta by Desportesius spinulatus. Apharyngostrigea cornu was positively associated with Desmidocercella numidica and D. spinulatus in A. cinerea. PMID:17089743

  12. Effect of water quality parameters on the distribution of Pleuromamma (Copepoda–Calanoida) species in the Indian Ocean: a statistical approach

    Microsoft Academic Search

    K. V. Jayalakshmy; M. Saraswathy; Maheswari Nair

    2009-01-01

    The region between 10° N and 10° S latitude was known to be congenial for distribution of Pleuromamma species. Diel and ontogenetic migrations were observed for Pleuromamma xiphias. Multivariate analyses such as factor analysis on species’ abundance and predictive step-up multiple regression models of\\u000a water quality parameters: temperature, salinity, dissolved oxygen and their first order interaction effects on Pleuromamma species’

  13. Honeydew flicking by treehoppers provides cues to potential tending ants

    Microsoft Academic Search

    KLEBER DEL-CLARO; PAULO S. OLIVEIRA

    1996-01-01

    The honeydew-producing treehopper,Guayaquila xiphias, is frequently tended by ants on shrubs ofDidymopanax vinosumin the Brazilian savannah. Field experiments showed that the flicking of accumulated honeydew by untended treehoppers provides cues to ground-dwelling ants. Upon finding scattered honeydew droplets on the ground, the ants climb onto the host plant and start tending activity. Honeydew-soaked filter papers placed beneath unoccupied host plants

  14. The day and night vertical distributions of calanoid copepods in the western Gulf of Mexico, with reference to feeding relationships

    E-print Network

    Minello, Thomas Joseph

    1974-01-01

    gracilis, P. abdominalis abdominalis, and P. xiphias. Plotted as in Fig. 7 (page 39) 14 The vertical distribution of the family Lucicutiidae, Lucicutia flavicornis, L. paraclausi, L. ovalis, and L. clausi. Plotted as in Fig. 7 (page 39) 57 15... grazers Hhincalanus cornutusg Hannocalanus minor, Lucicutia flavi cornis, Pleuromamma gracilis, P. abdominalis abdominalis, and E. hgalinus. Plotted as in Fig. 7 (page 39) . The percentage of LIST OF FIGURES (continuedj Number Pacae calanoids...

  15. M. Flierl: Adaptive Spatial Wavelets for Motion-Compensated Orthogonal Video Transforms, IEEE ICIP, Cairo, Egypt, Nov. 2009. 1 ADAPTIVE SPATIAL WAVELETS FOR MOTION-COMPENSATED

    E-print Network

    Flierl, Markus

    M. Flierl: Adaptive Spatial Wavelets for Motion-Compensated Orthogonal Video Transforms, IEEE ICIP Markus Flierl ACCESS Linnaeus Center, School of Electrical Engineering KTH Royal Institute of Technology

  16. ORIGINAL PAPER Demographic parameters of reintroduced grey partridges

    E-print Network

    Paris-Sud XI, Université de

    decreased brood production rate. Keywords Perdix perdix . Reintroduction success . Annual changes . Weather Introduction The European populations of Grey partridge (Perdix perdix Linnaeus 1758) declined from mid-1950s

  17. Avian visual system configuration and behavioural response to object approach Bradley F. Blackwell a,*, Esteban Fernandez-Juricic b,1

    E-print Network

    Fernández-Juricic, Esteban

    mourning dove Zenaida macroura Antipredator behaviour theory provides a framework to understand), and mourning doves, Zenaida macroura (Linnaeus), to object approach (a ground-based vehicle) and vehicle

  18. Pholeter anterouterus Fischthal & Nasir, 1974 (Digenea: Opisthorchiidae) redescribed, together with remarks on the genera Pholeter Odhner, 1914 and Phocitrema Goto & Ozaki, 1930 and their relationship to the centrocestine heterophyids.

    PubMed

    Pearson, J C; Courtney, C H

    1977-06-01

    Photoleter anterouterus Fischthal & Nasir, 1974, from Pelecanus occidentalis Linnaeus and Pelecanus erythrorhynchos Gmelin from Florida, USA and the ventro-genital complexes of Photeleter gastrophilus (Kossack, 1910) from Delphinus delphis Linnaeus from Queensland, Australia and of Phocitrema fusiforme Goto & Ozaki, 1930 from Alopex lagopus (Linnaeus) and Phoca vitulina Linnaeus from Alaska are redescribed. The genus Photoleter Odhner, 1914 is emended and compared with Phocitrema Goto & Ozaki, 1930 and both genera are compared with members of, and as a result transferred from the family Opisthorchiidae Looss, 1899 to, the subfamily Centrocestinae Looss, 1899, family Heterophyidae Odhner, 1914. PMID:876682

  19. Accepted by Z.-Q. Zhang: 26 Nov. 2007; published: 21 Dec. 2007 127 ISSN 1175-5326 (print edition)

    E-print Network

    Fautin, Daphne

    .mapress.com/zootaxa/ The phylum Cnidaria: A review of phylogenetic patterns and diversity 300 years after Linnaeus* MARYMEGAN DALY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .129 PHYLUM CNIDARIA

  20. Impact of Elevated Levels of Atmospheric CO2 and Herbivory on Flavonoids of Soybean

    E-print Network

    DeLucia, Evan H.

    feeding guilds: leaf skeletonizer (Popillia japonica Newman), leaf chewer (Vanessa cardui Linnaeus. Keywords Flavonol . Isoflavone . Popillia japonica . Aphis glycines . Vanessa cardui . Global climate

  1. USDA Forest Service Gen. Tech. Rep. RMRS-GTR-98. 2002 113 Appendix B: Scientific and Common Names of Trees ________________

    E-print Network

    ............................................................................................................... Durango fir Abies grandis (Douglas ex D. Don in Lambert ) Lindley of Trees ________________ Abies amabilis Douglas ex J. Forbes a ................................................................................................. Pacific silver fir Abies balsamea (Linnaeus) Miller

  2. Novas ocorrências de corais azooxantelados (Anthozoa, Scleractinia) na plataforma e talude continental do sul do Brasil (25-34o S)

    Microsoft Academic Search

    Marcelo Visentini Kitahara

    New records of azooxanthellate corals (Anthozoa, Scleractinia) from the southern Brazilian conti- nental shelf and slope. This study presents the records of Madrepora oculata Linnaeus, 1758, Solenosmilia variabilis Duncan, 1873, and Trochocyathus laboreli Cairns, 2000, for the southern Brazilian continental shelf and slope, and the extension of the occurrence of Lophelia pertusa (Linnaeus, 1758). All specimens were collected in Paraná,

  3. Bioaccumulation of heavy metals in fishes from Taihu Lake, China

    Microsoft Academic Search

    Qiao-qiao CHI; Guang-wei ZHU; Alan Langdon

    2007-01-01

    The Cr, Zn, Cu, Cd, Pb contents were determined in Cyprinus carpio Linnaeus, Carassius auratus Linnaeus, Hypophthalmichthys molitrix and Aristichthys nobilis, which were caught from Meiliang Bay, Taihu Lake, a large, shallow and eutrophic lake of China. The results showed that: (1) the Cr, Cu, Pb, Cd contents in the edible parts of the four fish species were much lower

  4. Collection and collation: theory and practice of Linnaean botany

    Microsoft Academic Search

    Staffan Müller-Wille

    2007-01-01

    Historians and philosophers of science have interpreted the taxonomic theory of Carl Linnaeus (1707–1778) as an ‘essentialist’, ‘Aristotelian’, or even ‘scholastic’ one. This interpretation is flatly contradicted by what Linnaeus himself had to say about taxonomy in Systema naturae (1735), Fundamenta botanica (1736) and Genera plantarum (1737). This paper straightens out some of the more basic misinterpretations by showing that:

  5. 77 FR 53236 - Notice of Permit Applications Received Under the Antarctic Conservation Act of 1978 (Pub. L. 95-541)

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-08-31

    ...White Island, ASPA 138-Linnaeus Terrace, and, ASPA 154-Botany Bay to conduct a review of their management plans. The Antarctic...White Island, ASPA 138-Linnaeus Terrace, and, ASPA 154-Botany Bay. Dates August 15, 2012 to August 31, 2017. Nadene...

  6. Scat detection dogs in wildlife research and management: application to grizzly and black bears in the Yellowhead Ecosystem Alberta

    Microsoft Academic Search

    Samuel K. Wasser; Barbara Davenport; Elizabeth R. Ramage; Kathleen E. Hunt; Margaret Parker; Christine Clarke; Gordon Stenhouse

    Abstract: We report the development and application of a method using domestic dogs (Canis familiaris Linnaeus, 1758) to systematically locate wildlife scat over large remote areas. Detection dogs are chosen,for their strong object orientation, high play drive, and willingness to strive for a reward. Dogs were trained to detect grizzly bear ( Ursus arctos Linnaeus, 1758) and black bear (Ursus

  7. Leaf Beetles (Insecta: Coleoptera: Chrysomelidae) Suffer From Feeding on Fern Leaves1

    Microsoft Academic Search

    Michael SCHMITT; Sigrun BOPP

    Two age groups of larvae of Agelastica alni (Linnaeus, 1758) and Phratora vitellinae (Linnaeus, 1758) were provided with treated or untreated leaves of their actual host plant (Alnus glutinosa or Salix spp., respectively) or of the ferns Athyrium filix-femina, Dryopteris austriaca and D. filix-mas. \\

  8. LarvaL deveLopment and mortaLity of the painted Lady butterfLy, vanessa cardui (Lepidoptera: nymphaLidae), on foLiage grown under eLevated carbon dioxide

    Microsoft Academic Search

    Bridget F. O'Neill; Arthur R. Zangerl; Clare L. Casteel; Jorge A. Zavala; Evan H. DeLucia; May R. Berenbaum

    To determine the indirect effects of elevated CO2 on larval Lepidoptera, we compared the growth and development of larvae of Vanessa cardui Linnaeus (Lepidoptera: Nymphalidae) on Glycine max Linnaeus (soybean) foliage grown under ambient or elevated levels of CO2 from first instar to pupation. There was no significant difference in larval survivorship or the duration of larval develop- ment between

  9. Hyalomma aegyptium as dominant tick in tortoises of the genus Testudo in Balkan countries, with notes on its host preferences

    Microsoft Academic Search

    Pavel Široký; Klára J. Petrželková; Martin Kamler; Andrei D. Mihalca; David Modrý

    2006-01-01

    Collection of 1327 ticks sampled throughout Greece, Bulgaria, Romania and Croatia, from 211 tortoises belonging to three species,\\u000a Testudo marginata Schoepff, T. graeca Linnaeus, and T. hermanni Gmelin, revealed the presence of four species of ixodid ticks, namely Hyalomma aegyptium (Linnaeus), Haemaphysalis sulcata Canestrini and Fanzago, H. inermis Birula and Rhipicephalus sanguineus (Latreille). Study confirmed the strong dominance of all

  10. Reference: Bid. Bull. 194: 132-142. (April, 1998) Role of Chemical Inducers in Larval Metamorphosis

    E-print Network

    Boettcher, Anne

    Metamorphosis of Queen Conch, Strombus gigas Linnaeus: Relationship to Other Marine Invertebrate Systems ANNE A of metamorphosis in many marine invertebrate larvae. In the queen conch, Strombus gigas Linnaeus, larval in conch nursery grounds; these species include the foliose rhodophyte Laurencia poitei (Lamouroux

  11. Small mammal ecology in an urban Atlantic forest fragment in southeastern Brazil

    Microsoft Academic Search

    Francisco F. R. Oliveira; Rafael Nessim; Leonora P. Costa; Yuri Luiz; R. Leite

    We conducted a capture-mark-release study of small mammals in an urban forest fragment at the Parque das Mangabeiras, in the city of Belo Horizonte, southeastern Brazil. Four marsupials — Didelphis albiventris Lund, Gracilinanus agilis (Burmeister), Marmosops incanus (Lund), Philander frenatus (Olfers) — and four rodents — Sciurus aestuans Linnaeus, Akodon montensis Thomas, Rhipidomys mastacalis (Lund) and Mus musculus Linnaeus

  12. Scat detection dogs in wildlife research and management: application to grizzly and black

    E-print Network

    Wasser, Samuel

    arctos Linnaeus, 1758) and black bear (Ursus americanus Pallas, 1780) scats over a 5200-km2 area présence de fèces d'ours noirs (Ursus arctos Linnaeus, 1758) et de grizzlis (Ursus americanus Pallas, 1758 play drive, and willingness to strive for a reward. Dogs were trained to detect grizzly bear (Ursus

  13. Tamandua tetradactyla Linnaeus, 1758 (Myrmecophagidae) and Rhodnius robustus Larrousse, 1927 (Triatominae) infection focus by Trypanosoma rangeli Tejera, 1920 (Trypanosomatidae) in Attalea phalerata Mart. ex Spreng (Arecaceae) palm tree in the Brazilian Amazon

    Microsoft Academic Search

    Fernando Braga Stehling Dias; Marion Quartier; Christine A. Romaña; Liléia Diotaiuti; Myriam Harry

    2010-01-01

    A sylvatic infection focus of Trypanosoma rangeli, whose cycle involves the anteater Tamandua tetradactyla and triatomine insect Rhodnius robustus was observed in a pasture-dominated landscape of the rural riparian community of São Tomé located along the Tapajós river in the municipal district of Aveiro (State of Pará, Brazil), the Brazilian Amazon region. During a field work campaign with the objective

  14. In situ evaluation of the genotoxic potential of the river Nile: I. Micronucleus and nuclear lesion tests of erythrocytes of Oreochromis niloticus niloticus (Linnaeus, 1758) and Clarias gariepinus (Burchell, 1822)

    Microsoft Academic Search

    Alaa G. M. Osman; Abd-El-Baset M. Abd El Reheem; Mohsen A. Moustafa; Usama M. Mahmoud; Khaled Y. Abuel-Fadl; Werner Kloas

    2011-01-01

    This study aimed to investigate the genotoxic potential of chemicals present along the course of the river Nile using frequencies of micronuclei (MN) and nuclear lesions (NL) in erythrocytes of Nile tilapia Oreochromis niloticus niloticus and African catfish Clarias gariepinus, as biomarkers. Results showed that most of the physicochemical parameters detected and heavy metal concentrations were significantly higher in the

  15. Acute toxicity of sodium nitrate, potassium nitrate, and potassium chloride and their effects on the hemolymph composition and gill structure of early juvenile blue swimmer crabs(Portunus pelagicus Linnaeus, 1758) (Decapoda, Brachyura, Portunidae).

    PubMed

    Romano, Nicholas; Zeng, Chaoshu

    2007-09-01

    Various nutrients, including K+ and NO3-, are increasingly being discharged into aquatic systems via anthropogenic sources, which may impact marine organisms. The present study was conducted on blue swimmer crab (Portunus pelagicus) early juveniles to determine the acute toxicity of NaNO3, KNO3, and KCl; if a toxicity interaction exists between K+ and NO3-; the hemolymph Na+, K+, and Ca2+ changes; and the gill histopathological alterations following exposure to elevated NaNO3, KNO3, and KCl levels. A total of 20 replicate crabs were exposed to each of the five NaNO3, KNO3, and KCl concentrations for 96 h. After 96 h, the surviving crabs were sampled for hemolymph Na+, K+, and Ca2+ levels and fixed for histological examination of the anterior gills. The 96-h median lethal concentration of NaNO3-N, KNO3-N, KNO3-K, and KCl-K was 3,452, 112, 312, and 356 mg/L, respectively, for early P. pelagicus juveniles. The toxicity of NaNO3-N was significantly less (p < 0.01) than that of KNO3-N. Furthermore, at the same K+ levels, KNO3-K was significantly (p < 0.05) more toxic than KCl-K, indicating a toxicity interaction between K+ and NO3-. Following exposure to elevated KNO3 and KCl levels, the crabs had significantly higher (p < 0.01) hemolymph K+ levels compared to the control. Conversely, following exposure to elevated NaNO3 concentrations, the crabs had significantly higher (p < 0.01) hemolymph Na+ levels but significantly lower (p < 0.01) hemolymph K+ levels. Despite the markedly different hemolymph ionic changes following NaNO3 and KNO3/KCl exposure, the histopathological changes to the anterior gill lamellae of the crabs appeared to be similar, including lamellae swelling, epithelial thickening, pillar cell disruption, necrosis, and distortion. PMID:17705664

  16. Systematic notes on Asian birds. 15. Nomenclatural issues concerning the common sand martin Riparia riparia (Linnaeus, 1758) and the pale sand martin R. diluta (Sharpe & Wyatt, 1893), with a new synonymy

    Microsoft Academic Search

    V. M. Loskot; E. C. Dickinson

    2001-01-01

    A female of Riparia diluta in the ZISP collection and collected by Severtsov, which has sometimes been supposed to belong to the type series, is found to be this species but not the same subspecies and only a topotype. We designate a lectotype for R. diluta as Severtsov’s material was composite. Names introduced by Zarudny (1916) are evaluated and the

  17. Systematic notes on Asian birds. 61. New data on taxonomy and nomenclature of the Common Sand Martin Riparia riparia (Linnaeus, 1758) and the Pale Sand Martin R. diluta (Sharpe & Wyatt, 1893)

    Microsoft Academic Search

    V. M. Loskot

    2006-01-01

    The main diagnostic characters of Riparia riparia and R. diluta are discussed based on fresh examinations of extensive material. The opinion of Zarudny that his subspecies innominata belongs to R. riparia is validated, but the series of syntypes of R. riparia innominata includes birds of both these sand martin species, and a lectotype is designated for R. r. innominata Zarudny

  18. Disruptive Body Patterning of Cuttlefish (Sepia officinalis) Requires Visual Information Regarding Edges and Contrast of Objects in Natural Substrate Backgrounds

    Microsoft Academic Search

    CHUAN-CHIN CHIAO; EMMA J. KELMAN; ROGER T. HANLON

    Cuttlefish (Sepia officinalis Linnaeus, 1758) on mixed light and dark gravel show disruptive body patterns for camouflage. This response is evoked when the size of the gravel is equivalent to the area of the \\

  19. A Study of Selected Chemical and Biological Conditions of the Lower Trinity River and the Upper Trinity Bay 

    E-print Network

    Baldauf, R. J.

    1970-01-01

    , but the actual extent to which commercially important species were utilizing these threatened wetlands was unknown. This paper attempts to demonstrate the extent to which the marsh has been utilized by the white shrimp (Penaeus setiferus Linnaeus), the brown...

  20. 38 Marine Fisheries Review Introduction

    E-print Network

    38 Marine Fisheries Review Introduction The Northern Hemisphere blue whale, Balaenoptera musculus muscu- lus Linnaeus 1758; the pygmy blue whale, Balaenoptera musculus brevi- cauda Ichihara 1966; and the true blue whale65 , Balaenoptera musculus inter- media Burmeister 1871, are members

  1. The basking behavior of Trachemys scripta elegans

    E-print Network

    McDonald, Lisa Maureen

    1992-01-01

    . Basking turtles usually did respond to the unobstructed sight of other animals, however. Birds were generally disregarded unless they were very large species such as great blue herons Ardea her ~ia Linnaeus, or unless they were within approximately 2 m...

  2. The Condor 107:107113 The Cooper Ornithological Society 2005

    E-print Network

    Emslie, Steve

    ). In Peru, fossils of five modern genera (Vultur, Gymnogyps, Sarcoramp- hus, Coragyps, and Cathartes and vultures (Vultur Linnaeus 1758, Sarcoramphus Dume´ril 1806, Cathartes Illiger 1811, Gymnogyps Lesson 1842

  3. Habitat use, growth, and mortality of post-settlement lane snapper (Lutjanus synagris) on natural banks in the northwestern Gulf of Mexico 

    E-print Network

    Mikulas, Joseph John

    2009-05-15

    Three low-relief banks (Heald Bank, Sabine Bank, Freeport Rocks) in the northwestern Gulf of Mexico were evaluated as lane snapper (Lutjanus synagris Linnaeus, 1758) nursery habitat. Trawl surveys were conducted in three ...

  4. Molecular Phylogenetics of Emydine Turtles: Taxonomic Revision and the Evolution of Shell Kinesis

    E-print Network

    Feldman, Chris R

    Emydinae in which all but three nodes are well resolved. Emys orbicularis, Emy- doidea blandingii. For example, the European pond turtle, Emys orbicularis, is one of the oldest named chelonians (Linnaeus, 1758

  5. First isolation and characterization of Lactococcus garvieae from Brazilian Nile tilapia, Oreochromis niloticus, (L.), and pintado, Pseudoplathystoma corruscans (Spix and Agassiz)

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Lactococcus garvieae infection in cultured Nile tilapia, Oreochromis niloticus, (Linnaeus) and pintado, Pseudoplathystoma corruscans, (Spix and Agassiz) from Brazil is reported. The commercial bacterial identification system, Biolog Microlog®, confirmed the identity of L. garvieae. Infectivity tri...

  6. Fedorka & Mousseau: Nuptial Gifts in a Cricket 317 TIBIAL SPUR FEEDING IN GROUND CRICKETS

    E-print Network

    Fedorka, Ken

    with the volume of sperm transferred (Thornhill 1976). In contrast, nuptial feeding in the osprey, Pandion haliaetus (Linnaeus), acts as paternal investment since it was positively associated with offspring growth

  7. MATING BEHAVIOR OF CEPHALONOMIA TARSALIS (ASHMEAD)(HYMENOPTERA: BETHYLIDAE) AND THE EFFECT OF FEMALE MATING FREQUENCE ON OFFSPRING PRODUCTION

    Technology Transfer Automated Retrieval System (TEKTRAN)

    The courtship behavior of Cephalonomia tarsalis (Ashmead), a solitary semi-ectoparasitoid of Oryzaephilus surinamensis (Linnaeus) (Coleoptera: Silvanidae), was investigated in the laboratory. Courtship behavior includes a series of stereotypic movements. Males play the most active role, executing th...

  8. 11. Photocopy of 1906 photograph. Glass negative in Paul A. ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    11. Photocopy of 1906 photograph. Glass negative in Paul A. Kohl's office, Missouri Botanical Garden. CLOSE VIEW OF LINNAEUS BUST - Missouri Botanical Garden, Linnaean House, 2345 Tower Grove Avenue, Saint Louis, Independent City, MO

  9. 10. Photocopy of January 10, 1906 photograph. Glass negative in ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    10. Photocopy of January 10, 1906 photograph. Glass negative in Paul A. Kohl's office, Missouri Botanical Garden. BUST OF LINNAEUS OVER SOUTH ENTRANCE - Missouri Botanical Garden, Linnaean House, 2345 Tower Grove Avenue, Saint Louis, Independent City, MO

  10. Experimental nursery pond cultivation of the seagrass Halodule beaudettei

    E-print Network

    Rosen, David J.

    1998-01-01

    in the number of wintering redhead ducks (Aythya americana Eyton) in the Galveston Bay System (GBS) (Figure 1) correlated with a decline of seagrass acreage (Brazda 1988). Additionally, a decline of wintering brant (Brantus bernicla Linnaeus) occurred...

  11. Venomous Terrestrial Animals of Texas 

    E-print Network

    Jackman, John A.

    2004-08-13

    ) . . . . . . . . . . . . . . . . . . . . . . . . .22 Western Diamondback Rattlesnake . . . . . . . . . . . . . . . . . . . . .23 Timber Rattlesnake . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24 Blacktail Rattlesnake... to bites are similar to western diamondback rattlesnake. Blacktail Rattlesnake Crotalus molossus (Baird and Girard) [Squamata: Viperidae] 25 Timber Rattlesnake Crotalus horridus (Linnaeus) [Squamata: Viperidae] 24 Rock Rattlesnake Crotalus lepidus...

  12. 7 CFR 301.45 - Notice of quarantine; restriction on interstate movement of specified regulated articles.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ...DEPARTMENT OF AGRICULTURE DOMESTIC QUARANTINE NOTICES Gypsy Moth § 301.45 Notice of quarantine; restriction on...and Wisconsin in order to prevent the spread of the gypsy moth, Lymantria dispar (Linnaeus), a dangerous...

  13. 7 CFR 301.45 - Notice of quarantine; restriction on interstate movement of specified regulated articles.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ...DEPARTMENT OF AGRICULTURE DOMESTIC QUARANTINE NOTICES Gypsy Moth § 301.45 Notice of quarantine; restriction on...and Wisconsin in order to prevent the spread of the gypsy moth, Lymantria dispar (Linnaeus), a dangerous...

  14. 7 CFR 301.45 - Notice of quarantine; restriction on interstate movement of specified regulated articles.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ...DEPARTMENT OF AGRICULTURE DOMESTIC QUARANTINE NOTICES Gypsy Moth § 301.45 Notice of quarantine; restriction on...and Wisconsin in order to prevent the spread of the gypsy moth, Lymantria dispar (Linnaeus), a dangerous...

  15. Global convergence of the Heavy-ball method for convex optimization

    E-print Network

    2014-12-20

    Department of Automatic Control, School of Electrical Engineering and ACCESS Linnaeus Center, Royal. Institute of ... convex optimization methods are still open [6]. The basic ...... convex optimization,” Technical Report, 2014. [Online].

  16. 378 2010 ISZS, Blackwell Publishing and IOZ/CAS Review of research methodologies for tigers: Telemetry

    E-print Network

    Hebblewhite, Mark

    -4877.2010.00216.x #12;379© 2010 ISZS, Blackwell Publishing and IOZ/CAS collars on free-ranging grizzly bears (Ursus arctos Linnaeus, 1758), they greatly increased the quantity and quality of data collected, and followed

  17. Habitat utilization by sympatric European mink Mustela lutreola and polecats Mustela putorius in south-western France

    Microsoft Academic Search

    Pascal Fournier; Christian Maizeret; David Jimenez; Jean-Pierre Chusseau; Stéphane Aulagnier; François Spitz

    2007-01-01

    The European minkMustela lutreola Linnaeus, 1761 and the European polecatMustela putorius Linnaeus, 1758 are related species sympatric in southwestern France. The European mink is rapidly disappearing whereas the\\u000a polecat maintains good populations. Seasonal habitat use of both species was compared in the Landes de Gascogne region to\\u000a identify if some vulnerability factors of the European mink were associated with habitats

  18. Spatial behaviour of European mink Mustela lutreola and polecat Mustela putorius in southwestern France

    Microsoft Academic Search

    Pascal Fournier; Christian Maizeret; Christine Fournier-Chambrillon; Nicolas Ilbert; Stéphane Aulagnier; François Spitz

    2008-01-01

    The European minkMustela lutreola Linnaeus, 1761 and the European polecatMustela putorius Linnaeus, 1758 are sympatric in southwestern France. They are related species but the former is highly threatened whereas\\u000a the latter maintains good populations. Nine European mink and 14 polecats were radiotracked in the Landes de Gascogne region\\u000a to compare their space use and to identify appropriate conservation measures for

  19. CULEX (CULEX\\

    Microsoft Academic Search

    RALPH E. HARBACH; CHRISTINE DAHL; GRAHAM B. WHITE

    The history of the concept of Culex pipien.s Linnaeus is reviewed. An illustration of a syntype published by Reaumur is designated as the lectotype of pipiens. A lectotype is also designated for Culex bifhcatus Linnaeus, which is stabilized as a synonym of pipiens. A neotype for pipiens is designated in place of the non-extant lectotype-specimen. The adult, pupal, and larval

  20. [Seasonal evaluation of mammal species richness and abundance in the "Mário Viana" municipal reserve, Mato Grosso, Brasil].

    PubMed

    Rocha, Ednaldo Cândido; Silva, Elias; Martins, Sebastião Venâncio; Barreto, Francisco Cândido Cardoso

    2006-09-01

    We evaluated seasonal species presence and richness, and abundance of medium and large sized mammalian terrestrial fauna in the "Mário Viana" Municipal Biological Reserve, Nova Xavantina, Mato Grosso, Brazil. During 2001, two monthly visits were made to an established transect, 2,820 m in length. Records of 22 mammal species were obtained and individual footprint sequences quantified for seasonal calculation of species richness and relative abundance index (x footprints/km traveled). All 22 species occurred during the rainy season, but only 18 during the dry season. Pseudalopex vetulus (Lund, 1842) (hoary fox), Eira barbara (Linnaeus, 1758) (tayra), Puma concolor (Linnaeus, 1771) (cougar) and Hydrochaeris hydrochaeris (Linnaeus, 1766) (capybara) were only registered during the rainy season. The species diversity estimated using the Jackknife procedure in the dry season (19.83, CI = 2.73) was smaller than in the rainy season (25.67, CI = 3.43). Among the 18 species common in the two seasons, only four presented significantly different abundance indexes: Dasypus novemcinctus Linnaeus, 1758 (nine-banded armadillo), Euphractus sexcinctus (Linnaeus, 1758) (six-banded armadillo), Dasyprocta azarae Lichtenstein, 1823 (Azara's Agouti) and Tapirus terrestris (Linnaeus, 1758) (tapir). On the other hand, Priodontes maximus (Kerr, 1792) (giant armadillo) and Leopardus pardalis (Linnaeus, 1758) (ocelot) had identical abundance index over the two seasons. Distribution of species abundance in the sampled area followed the expected pattern for communities in equilibrium, especially in the rainy season, suggesting that the environment still maintains good characteristics for mammal conservation. The present study shows that the reserve, although only 470 ha in size, plays an important role for conservation of mastofauna of the area as a refuge in an environment full of anthropic influence (mainly cattle breeding in exotic pasture). PMID:18491629

  1. Computational analysis and functional expression of ancestral copepod luciferase.

    PubMed

    Takenaka, Yasuhiro; Noda-Ogura, Akiko; Imanishi, Tadashi; Yamaguchi, Atsushi; Gojobori, Takashi; Shigeri, Yasushi

    2013-10-10

    We recently reported the cDNA sequences of 11 copepod luciferases from the superfamily Augaptiloidea in the order Calanoida. They were classified into two groups, Metridinidae and Heterorhabdidae/Lucicutiidae families, by phylogenetic analyses. To elucidate the evolutionary processes, we have now further isolated 12 copepod luciferases from Augaptiloidea species (Metridia asymmetrica, Metridia curticauda, Pleuromamma scutullata, Pleuromamma xiphias, Lucicutia ovaliformis and Heterorhabdus tanneri). Codon-based synonymous/nonsynonymous tests of positive selection for 25 identified copepod luciferases suggested that positive Darwinian selection operated in the evolution of Heterorhabdidae luciferases, whereas two types of Metridinidae luciferases had diversified via neutral mechanism. By in silico analysis of the decoded amino acid sequences of 25 copepod luciferases, we inferred two protein sequences as ancestral copepod luciferases. They were expressed in HEK293 cells where they exhibited notable luciferase activity both in intracellular lysates and cultured media, indicating that the luciferase activity was established before evolutionary diversification of these copepod species. PMID:23886588

  2. Microsatellites for Next-Generation Ecologists: A Post-Sequencing Bioinformatics Pipeline

    PubMed Central

    Fernandez-Silva, Iria; Whitney, Jonathan; Wainwright, Benjamin; Andrews, Kimberly R.; Ylitalo-Ward, Heather; Bowen, Brian W.; Toonen, Robert J.; Goetze, Erica; Karl, Stephen A.

    2013-01-01

    Microsatellites are the markers of choice for a variety of population genetic studies. The recent advent of next-generation pyrosequencing has drastically accelerated microsatellite locus discovery by providing a greater amount of DNA sequencing reads at lower costs compared to other techniques. However, laboratory testing of PCR primers targeting potential microsatellite markers remains time consuming and costly. Here we show how to reduce this workload by screening microsatellite loci via bioinformatic analyses prior to primer design. Our method emphasizes the importance of sequence quality, and we avoid loci associated with repetitive elements by screening with repetitive sequence databases available for a growing number of taxa. Testing with the Yellowstripe Goatfish Mulloidichthys flavolineatus and the marine planktonic copepod Pleuromamma xiphias we show higher success rate of primers selected by our pipeline in comparison to previous in silico microsatellite detection methodologies. Following the same pipeline, we discover and select microsatellite loci in nine additional species including fishes, sea stars, copepods and octopuses. PMID:23424642

  3. Bone morphology of the hind limbs in two caviomorph rodents.

    PubMed

    de Araújo, F A P; Sesoko, N F; Rahal, S C; Teixeira, C R; Müller, T R; Machado, M R F

    2013-04-01

    In order to evaluate the hind limbs of caviomorph rodents a descriptive analysis of the Cuniculus paca (Linnaeus, 1766) and Hydrochoerus hydrochaeris (Linnaeus, 1766) was performed using anatomical specimens, radiography, computed tomography (CT) and full-coloured prototype models to generate bone anatomy data. The appendicular skeleton of the two largest rodents of Neotropical America was compared with the previously reported anatomical features of Rattus norvegicus (Berkenhout, 1769) and domestic Cavia porcellus (Linnaeus, 1758). The structures were analyzed macroscopically and particular findings of each species reported. Features including the presence of articular fibular projection and lunulae were observed in the stifle joint of all rodents. Imaging aided in anatomical description and, specifically in the identification of bone structures in Cuniculus paca and Hydrochoerus hydrochaeris. The imaging findings were correlated with the anatomical structures observed. The data may be used in future studies comparing these animals to other rodents and mammalian species. PMID:22731111

  4. Cytogenetic studies in four cultivated Amaranthus (Amaranthaceae) species

    PubMed Central

    Bonasora, Marisa Graciela; Poggio, Lidia; Greizerstein, Eduardo José

    2013-01-01

    Abstract In the present study, the chromosomes numbers were confirmed, 2n = 34 for Amaranthus cruentus Linnaeus, 1759, and 2n = 32 for Amaranthus hypochondriacus Linnaeus, 1753, Amaranthus mantegazzianus Passer, 1864, and Amaranthus caudatus Linnaeus, 1753. The distribution and variability of constitutive heterochromatin were detailed using DAPI-CMA3 banding technique. The position of the nucleolus organizer region (NOR) was observed using Ag-NOR banding (active loci) and fluorescent in situ hybridization (rDNA-FISH) in the four Amaranthus species. Variations in the amount of constitutive heterochromatin were detected both within the species and between them, with DAPI-CMA3 stain. One chromosome pair having a NOR was found in each studied accession, with exception of Amaranthus caudatus cv. EEA INTA Anguil. This accession presented four rDNA loci (FISH), being active two of them (Ag- banding). PMID:24260690

  5. Feeding behaviour of Black Sea bottom fishes: Did it change over time?

    NASA Astrophysics Data System (ADS)

    B?naru, Daniela; Harmelin-Vivien, Mireille

    2009-11-01

    This study was designed to improve knowledge in feeding behaviour of the round goby ( Apollonia melanostomus (Pallas, 1814)), the red mullet ( Mullus barbatus ponticus Essipov, 1927), the whiting ( Merlangius merlangus (Linnaeus, 1758)), the flounder ( Platichthys flesus (Linnaeus, 1758)), the sole ( Solea solea (Linnaeus, 1758)), the turbot ( Psetta maeotica (Pallas, 1814)) and the starry sturgeon ( Acipenser stellatus Pallas, 1771) from the north-western Black Sea. Gut content coupled with stable isotope analysis allowed describing food web variations according to species, in two seasons and at two areas located seawards the Danube River. Present results showed that most fishes have likely changed their feeding behaviour compared to past studies from the same area. Trophic niches were reduced and dietary overlap was common, as different fish species consumed the same dominant prey types. Fishes probably adapted their feeding behaviour to the increasingly low biodiversity of the Black Sea communities.

  6. Dasypodidae Borner, 1919 (Insecta, Hymenoptera): Proposed emendation of spelling to Dasypodaidae, so removing the homonymy with Dasypodidae Gray, 1821 (Mammalia, Xenarthra)

    USGS Publications Warehouse

    Alexander, B.A.; Michener, C.D.; Gardner, A.L.

    1998-01-01

    The family-group name DASYPODIDAE Borner, 1919 (Insecta, Hymenoptera) is a junior homonym Of DASYPODIDAE Gray, 1821 (Mammalia, Xenarthra). It is proposed that the homonymy between the two names, which relate to short-tongued bees and armadillos respectively, should be removed by emending the stem of the generic name Dasypoda Latreille, 1802, on which the insect familygroup name is based, to give DASYPODAIDAE, while leaving the mammalian name (based on Dasypus Linnaeus, 1758) unchanged. Dasypus novemcinctus Linnaeus, 1758, the type species of Dasypus, has a wide distribution in the southern United States, Central and South America. The genus Dasypoda ranges throughout most of the Palearctic region.

  7. Clinostomum complanatum and Clinostomum marginatum (Rudolphi, 1819) (Digenea: Clinostomidae) are separate species based on differences in ribosomal DNA.

    PubMed

    Dzikowski, R; Levy, M G; Poore, M F; Flowers, J R; Paperna, I

    2004-04-01

    Infections by metacercariae of Clinostomum (Leidy, 1856) species adversely affect aquacultured fish and are potentially transmissible to humans. Molecular methodologies are efficient tools, which enable diagnosis of all life-history stages of trematodes in their diverse hosts. The small subunit of ribosomal DNA genes of adults of the Old World Clinostomum complanatum (Rudolphi, 1819) and the New World Clinostomum marginatum (Rudolphi, 1819), obtained from a little egret Egretta garzetta (Linnaeus, 1766) and the great blue heron Ardea herodias (Linnaeus, 1758), respectively, were amplified, sequenced, and aligned. The resulting alignment was used to develop a genetic assay to differentiate between these species. PMID:15165071

  8. New species of the feather mite genus Protolichus Trouessart, 1884 (Astigmata, Pterolichidae) from lories and lorikeets (Aves: Psittaciformes).

    PubMed

    Mironov, Sergey V; Ehrnsberger, Rainer; Dabert, Jacek

    2014-01-01

    Five new species of the feather mite genus Protolichus Trouessart, 1884 (Astigmata, Pterolichidae) are described from parrots of the subfamily Loriinae (Psittaciformes: Psittacidae): Protolichus ornatus sp. n. from Trichoglossus ornatus (Linnaeus, 1758), P. lorinus sp. n. from Lorius lory (Linnaeus, 1758), P. placentis sp. n. from Charmosyna placentis (Temminck, 1835), P. pulchellae sp. n. from C. pulchella (Gray GR, 1859), and P. rubiginosus sp. n. from T. rubiginosus (Bonaparte, 1850). Protolichus ornatus belongs to the brachiatus species group; the other new species belong to the crassior species group. PMID:24871411

  9. The Species of Rhimphoctona (Xylophylax) (Hymenoptera: Ichneumonidae: Campopleginae) Parasitizing Woodborers in China

    PubMed Central

    Luo, You-Qing; Sheng, Mao-Ling

    2010-01-01

    Four species of Rhimphoctona (Xylophylax) collected from P. R. China are reported. Two of them are new to science: Rhimphoctona (Xylophylax) maculifemoralis Luo and Sheng, sp.nov. reared from Tetropium castaneum (Linnaeus), and Rhimphoctona (Xylophylax) immaculata Luo and Sheng, sp.nov. One is a new record for China, R. (Xylophylax) rufocoxalis (Clément 1924) reared from T. castaneum (Linnaeus). The other is R. (Xylophylax) lucida (Clément 1924) reared from Monochamus saltuarius Gebier, Tetropium gabrieli Weise and Asemus sp. A key to species known in China is provided. PMID:20569126

  10. Modeling the Suppression of Sea Lamprey Populations by the Release of Sterile Males or Sterile Females

    Microsoft Academic Search

    Waldemar Klassen; Jean V. Adams; Michael B. Twohey

    2004-01-01

    The suppressive effects of trapping adult sea lampreys, Petromyzon marinus Linnaeus, and releasing sterile males (SMRT) or females (SFRT) into a closed system were expressed in deterministic models. Suppression was modeled as a function of the proportion of the population removed by trapping, the number of sterile animals released, the reproductive rate and sex ratio of the population, and (for

  11. Wireless Control: Opportunities and Challengespp g

    E-print Network

    Johansson, Karl Henrik

    Wireless Control: Opportunities and Challengespp g Karl Henrik Johansson ACCESS Linnaeus Centre Araujo, Piergiuseppe Di Marco, Erik Henriksson Magnus Lindhé, Pan Gun Park, Chithrupa Ramesh, Per, communication and control · Strong industrial collaborations through an i d i l hiindustrial partnership program

  12. In vitro protein synthesis capacities in a cold stenothermal and a temperate eurythermal pectinid

    Microsoft Academic Search

    D. Storch; O. Heilmayer; I. Hardewig; H.-O. Pörtner

    2003-01-01

    The translational system was isolated from the gills of the Antarctic scallop Adamussium colbecki (Smith) and the European scallop Aequipecten opercularis (Linnaeus) for in vitro protein synthesis capacities (µg protein mg FW -1 day -1) and the translational capacities of RNA (k RNA in vitro mg protein mg RNA -1 day -1). In vitro protein synthesis capacity in the cold-adapted

  13. Larval Development of Aedes aegypti and Aedes albopictus in Peri-Urban Brackish Water and Its Implications for Transmission of Arboviral Diseases

    Microsoft Academic Search

    Ranjan Ramasamy; Sinnathamby N. Surendran; Pavilupillai J. Jude; Sangaralingam Dharshini; Muthuladchumy Vinobaba

    2011-01-01

    Aedes aegypti (Linnaeus) and Aedes albopictus Skuse mosquitoes transmit serious human arboviral diseases including yellow fever, dengue and chikungunya in many tropical and sub-tropical countries. Females of the two species have adapted to undergo preimaginal development in natural or artificial collections of freshwater near human habitations and feed on human blood. While there is an effective vaccine against yellow fever,

  14. Chromosomal Proteins of the Sperm of a Cephalochordate (Branchiostoma jloridae) and an Agnathan (Petromyzon marinus): Compositional Variability of the Nuclear Sperm Proteins of Deuterostomes

    Microsoft Academic Search

    NURIA SAPERAS; MANEL CHIVA; ENRIC RIBES; HAROLD E. KASINSKY; ELLEN ROSENBERG; JOHN H. YOUSON; JUAN AUSI

    We have isolated and characterized for the first time the chromosomal proteins from the nucleus of the sperm of a lancelet (amphioxus) Branchiostomaflor- idae (Hubbs, 1922) (Phylum Chordata: Subphylum Cephalochordata) and of a lamprey Petromyzon marinus (Linnaeus, 17 5 8) (Phylum Chordata: Subphylum Verte- brata: Class Agnatha). In the first case, the major protein component of the sperm-chromatin of a

  15. Neotype designation and a diagnostic account for the centipede, Scolopendra gigantea L. 1758, with an account of S. galapagoensis Bollman 1889 (Chilopoda Scolopendromorpha Scolopendridae)

    Microsoft Academic Search

    R. M. Shelley; S. B. Kiser

    2000-01-01

    The oldest species-group name in the chilopod order Scolopendromorpha and family Scolopendridae, Scolopendra gigantea Linnaeus 1758, is stabilized in accordance with the current concept by designating a neotype specimen from northern Venezuela. The species occurs in northern Colombia and Venezuela, and on Trinidad, Isla Margarita, Curaçao, and Aruba; records from the US Virgin islands, Haiti, Mexico, and Honduras are deemed

  16. The House Centipe de (Scutigera coleoptrata; Chilopoda): Controversy and Contradiction

    Microsoft Academic Search

    Charles A. Acosta

    The common house centipecle, Scntigera coleoptrata, has a long and storied history in the annals of zoology. The species has been through five scientiffc name changes since it was first described by Linnaeus in 17i8. Its wiiespread distribution iir.orlgho,rt the Northern Hemisphere has resulted in substantial debate astoitsplaceoforigin.Amongthecentipedes,itsmolpholog,isuniqueandhighlyspecialized,including \\

  17. Ixodid ticks collected from the raccoon dog Nyctereutes procyonoides albus and the common raccoon Procyon lotor in southern Hokkaido, Japan

    Microsoft Academic Search

    Takeo Yamauchi; Naoki Agetsuma; Natsuko Araki; Moe Fukushima

    2012-01-01

    Ixodid ticks were collected from the endemic raccoon dog Nyctereutes procyonoides albus (Hornaday) and the alien raccoon Procyon lotor (Linnaeus) in southern Hokkaido, Japan. Ixodes ovatus Neumann was the most abundant species collected from both host species, followed by Ixodes persulcatus Schulze. Haemaphysalis flava Neumann, I. ovatus, I. persulcatus, and Ixodes pavlovskyi Pomerantzev were first collected from N. p. albus.

  18. Reintroduction of the European mink Mustela lutreola in Saarland, Germany. Preliminary data on the use of space and activity as revealed by radio-tracking and live-trapping

    Microsoft Academic Search

    Elisabeth Peters; Ilona Brinkmann; Frauke Krüger; Silke Zwirlein; Ina Klaumann

    2009-01-01

    As an attempt to help conserve the endangered European mink Mustela lutreola (Linnaeus, 1761), a reintroduction program was started in a nature reserve in Saarland, Germany; the present study is part of this ongoing reintroduction project. Within the first 2 yr period, 48 (16 m, 32 f) founder animals were reintroduced, out of a total of about 75 animals intended

  19. 44 Marine Fisheries Review The Fin Whale

    E-print Network

    1758,isthesecondlargestmem- ber of the family Balaenopteridae (after the blue whale, B. musculus uniform gray- blue color. This asymmetry may be linked to the whale's feeding behavior44 Marine Fisheries Review The Fin Whale Introduction The fin whale, Balaenoptera physalus Linnaeus

  20. Spatial and temporal variation in population attributes, size and age

    E-print Network

    ., 1983). Many fish un- Habitat selection and diet of juvenile red porgy, Pagrus pagrus (Linnaeus, 1758-content analysis revealed that juvenile red porgy are carnivorous, feeding mainly on deca- pods. Diet composition and distribu- tion, generally reflect life history properties of a species. Changes in diet or habitat (or both

  1. A method of marking larval lampreys

    USGS Publications Warehouse

    Wigley, Roland L.

    1952-01-01

    Biological investigations of lamprey populations in central New York have indicated a need for developing a method of marking larvae of the sea lamprey, Petromyzon marinus Linnaeus, and the American brook lamprey, Lampetra lamottei (Lesueur) Since lamprey larvae live in burrows in the soft sediments of the stream bottom, the use of an external tag is impractical.

  2. Normal yeast flora of the upper digestive tract of some wild columbids

    USGS Publications Warehouse

    Kocan, R.M.; Hasenclever, H.F.

    1972-01-01

    Seven species of pigeons and doves were cultured for yeasts in the upper digestive tract. The following list gives the isolation rate for each columbid species and the yeasts cultured from them: feral pigeon Columba Livia (Gmelin) 95% -Candida albicans (Robin) Berkhout, C. tropicalis (Castellani) Berkhout, C. krusei (Cast.) Berkhout, C. guilliermondii (Cast.) Langeron et Guerra, Torulopsis glabrata (Anderson) Lodder et De Vries, Saccharomyces telluris Van der Walt, and Geotrichum sp.; white-crowned pigeon (C. leucocephala Linnaeus) 56% -- S. telluris; mourning dove (Zenaidura rnacroura Linnaeus) 24% -- C. albicans, C. tropicalis, C. guilliermondii, and Geotrichurn sp.; passerine ground dove (Collumbigallina passerina Linnaeus) 20% -- C. parapsilosis (Ashford) Langeron et Talice, Kloeckera apiculata (Reess Emend. Klocker) Janke; zenaida dove (Zenaida aurita Temminck) 16% -- C. albicans, C. guilliermondii, and T. glabrata; one moustasche dove (Geotrygon mystacea Gosse) -- C. guillierrnondii; ringed turtle dove (Streptopelia rizoria Linnaeus) 14% -- C. albicans and Geotrichurn sp. No signs of disease could be seen in the 139 birds that were examined, and it was concluded that these yeasts comprise a part of the columbid's normal microbial flora.

  3. Larval growth of anchovy, Engraulis encrasicolus , in the Western Mediterranean Sea

    Microsoft Academic Search

    I. Palomera; B. Morales-Nin; J. Lleonart

    1988-01-01

    Engraulis encrasicolus (Linnaeus, 1758) were sampled in July\\/August 1985 in the Western Mediterranean Sea; they were aged by means of growth rings in the sagittal otoliths. Daily growth rings were observed and subdaily rings were visible starting with the third or fourth daily increment. The Gompertz growth equation, commonly employed in larval growth analysis, suitably describes the growth of this

  4. MODULATION OF HEART ACTIVITY IN THE TERRESTRIAL SLUG LIMAX MAXIMUS BY THE FEEDING MOTOR PROGRAM, SMALL CARDIOACTIVE PEPTIDES AND STIMULATION OF BUCCAL NEURON Bl

    Microsoft Academic Search

    IAN G. WELSFORD; DAVID J. PRIOR

    Summary Activation of the feeding motor program (FMP) increases the force of ventricular contractions in heart\\/central nervous system (CNS) preparations of the terrestrial slug Limax maximus (Linnaeus). The FMP-induced increase in ventricular activity requires innervation of the heart by ahdominal ganglion nerves N9 and Nil . Application of the small cardioactive peptides SCPA and SCPB to isolated preparations of the

  5. Stress effect of two different transport systems on the physiological profiles of the crab Cancer pagurus

    Microsoft Academic Search

    S. Lorenzon; P. G. Giulianini; S. Libralato; M. Martinis; E. A. Ferrero

    2008-01-01

    Cancer pagurus Linnaeus, 1758, is a very important commercial species that can survive out of water if kept cool and humid. Once caught for commercial purposes and shipped around the world, animals are likely to be subjected to a number of stressors, including emersion and air exposure, hypoxia, temperature changes and handling.The aim of this study was to compare the

  6. Acta Herpetologica 4(1): 113-115, 2009 Releasecallsof femaleBombina bombina

    E-print Network

    Hödl, Walter

    -mail: guenter.gollmann@univie.ac.at Abstract. Release calls of a female fire-hellied toad, Bombina bombina, were recorded in the field while handling the toad. Duration and structure of these calls are similar to release of the fire-bellied toad, Bornbina bombina (Linnaeus, 1761) was described by Lörcher (1969) and Schneider

  7. Host Preferences of Trichogramma pretiosum and the Influence of Prior Ovipositional Experience on the Parasitism of Plutella xylostella and Pseudoplusia includens Eggs

    Microsoft Academic Search

    Richard W. H. Pluke; Gary L. Leibee

    2006-01-01

    Trichogramma wasps are generalist egg parasitoids used in biological control efforts. In a multi host situation they may preferentially parasitize a non-target host species to the detriment of the control program. Plutella xylostella Linnaeus (Lepidoptera: Plutellidae) is a very serious pest of cabbage, but is only one in a number of species in the ‘cabbageworm’ complex. We investigated the host

  8. Avian visual system configuration and behavioural response to object approach

    Microsoft Academic Search

    Bradley F. Blackwell; Esteban Fernández-Juricic; Thomas W. Seamans; Tracy Dolan

    2009-01-01

    Antipredator behaviour theory provides a framework to understand the mechanisms behind human- wildlife interactions; however, little is known about the role of visual systems in the responses to humans. We quantified responses of brown-headed cowbirds, Molothrus ater (Boddaert), and mourning doves, Zenaida macroura (Linnaeus), to object approach (a ground-based vehicle) and vehicle lighting regimen, and we examined two visual properties

  9. Author's personal copy Research paper

    E-print Network

    Pedersen, Tom

    July 2012 Keywords: dinoflagellate cyst concentration Lycopodium clavatum tablets spike absolute abundance Lycopodium clavatum tablets are commonly added as a spike to determine dinoflagellate cyst to the method described by Stockmarr (1971). The marker commonly used is Lycopodium clavatum Linnaeus (Stag

  10. Variation in safety factors of claws within and among six species of Cancer crabs (Decapoda: Brachyura)

    Microsoft Academic Search

    G. M. TAYLOR; A. R. PALMER; A. C. BARTON

    2000-01-01

    To better understand how safety factors of biological structures evolve, we examined the frequency of claw failure, and the intra- and interspecific patterns of variation in maximum biting force and breaking strength in the claws of six species of Cancer (Linnaeus) crabs that live in sympatry along the coast of the northeastern Pacific C. antennarius, C. branneri, C. gracilis, C.

  11. INTRODUCTION Immunocompetence is a critical determinant of individual fitness

    E-print Network

    Hopkins, William A.

    (Nerodia sipedon Linnaeus 1758). We sought to understand the influence of mercury (Hg), a common pollutant chamber (25°C), but provided heat lamps that allowed them to thermoregulate naturally. Following mercury at the College of William and Mary, Williamsburg, VA [see Drewett et al. (Drewett et al., 2013

  12. Growth history and age at recruitment of European glass eels ( Anguilla anguilla ) as revealed by otolith microstructure

    Microsoft Academic Search

    R. Lecomte-Finiger

    1992-01-01

    The growth history and age at recruitment of Anguilla anguilla Linnaeus, 1758 were studied, based on growth increments in sagittal otoliths of glass eels and elvers collected from the eastern Atlantic coast in 1989 and in 1990. The maximum otolith radius varied with pigmentation stage. Deposition of the transition ring was complete at Stage VIA0. The size of the leptocephalus

  13. Origin of the Hybrids of North American and European Bison in the Caucasus Mountains

    Microsoft Academic Search

    Lidia V. Zablotskaya; Mikhail A. Zablotsky; Marina M. Zablotskaya

    1990-01-01

    The last Caucasian European bison (Bison bonasus caucasicus Turkin and Satunin, 1904) was killed in 1927. In 1940 five inter-specific hybrids of the European bison (Bison bonasus Linneus, 1758) and the North American prairie bison (Bison bison bison Linnaeus, 1758) were imported into the Caucasian Reserve. It was planned to conduct continuous absorptive crossing of these hybrids with European bison.

  14. Orius (Heterorius) vicinus (Ribaut)(Hemiptera: Heteroptera: Anthocoridae) in western North America, a Correction of the Past

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Collection records for the Palearctic flower bug Orius (Heterorius) minutus (Linnaeus) (Heteroptera: Anthocoridae) in western North America date back to 1930. This species can be very similar in appearance to another Palearctic species, Orius (Heterorius) vicinus (Ribaut), and mistakes in identifica...

  15. Ecological aspects and hunting sustainability of paca (Cuniculus paca) in the Itaya river basin, Peruvian Amazonia

    Microsoft Academic Search

    Rolando Aquino; Deyber Gil; Etersit Pezo

    This report contains information about sleeping dens, population structure and the impact of hunting of the paca (Cuniculus paca Linnaeus, 1766). It is based in sleeping den observations, transect censuses and hunt- ing records. We found that each sleeping den has one to three orifices for regular access and way out, one to four orifices for circumstantial escape, and an

  16. Epidemiological aspects of Claviceps africana, causal agent of Sorghum ergot

    E-print Network

    Noe, Montes Garcia; Noe, Montes Garcia

    2005-02-17

    on 12 sphacelia that were held above soil surface for a year survived and infect sorghum florets on male-sterile line Host History and taxonomy A sorghum collection was first described by Linnaeus in 1753 under the name Holcus. However, in 1794...

  17. Genetische Verarmung des Alpenmurmeltieres (Marmota m. marmota ) in Österreich: Befunde aus Isoenzymanalysen

    Microsoft Academic Search

    M. PRELEUTHNER; W. PINSKER

    Samples from 13 populations of the Alpine Marmot Marmota m. marmota (LINNAEUS, 1758) from the Eastern Alps were studied electrophoretically for allo- zyme variation. The amount of variation was remarkably low. Only 2 out of 50 enzyme loci were polymorphic, the average heterozygosity measured 1,1%. Although a total of more than 6000 genes have been examined, no rare alleles were

  18. Long-term effects of litter sex ratio on female reproduction in two iteroparous mammals

    E-print Network

    Blumstein, Daniel T.

    , litter size, Marmota flaviventris, masculini- zation, Oryctolagus cuniculus, yellow-bellied marmot scenarios. For that, we used data from two long-term field projects studying yellow-bellied marmots (Marmota flaviventris Audubon and Bachman, 1841) and European rabbits (Oryctolagus cuniculus Linnaeus, 1758). We

  19. [Mealworm allergy].

    PubMed

    Bygum, A; Bindslev-Jensen, C

    1997-10-27

    A 24 year-old female employed in a pet shop developed occupationally related asthma, rhinoconjunctivitis and contact urticaria caused by exposure to the yellow mealworm (Tenebrio molitor Linnaeus) sold as food for birds and reptiles. A wholebody extract of the mealworm showed positive prick test and histamine release. PMID:9411975

  20. Distributed Detection and Isolation of Topology Attacks in Power Networks

    E-print Network

    Johansson, Karl Henrik

    Distributed Detection and Isolation of Topology Attacks in Power Networks James Weimer ACCESS Linnaeus Centre School of Electrical Engineering KTH Royal Institute of Technology Stockholm, Sweden 10044 Engineering KTH Royal Institute of Technology Stockholm, Sweden 10044 kallej@kth.se ABSTRACT This paper

  1. The species delimitation problem applied to the Agabus bipustulatus complex (Coleoptera, Dytiscidae) in north Scandinavia

    Microsoft Academic Search

    MARCUS K DROTZ; ANSSI SAURA; ANDERS N NILSSON

    2001-01-01

    Agabus bipustulatus (Linnaeus) is one of the most common aquatic beetles in Europe. Two species have been traditionally recognized within the Palaearctic Agabus bipustulatus complex (Coleoptera, Dytiscidae) in Scandinavia: a lowland form A. bipustulatus and a high-altitude form A. solieri Aubé. The specific status of solieri has been debated for more than a century but no quantitative investigation has been

  2. Dimorphism of the Metasternal Wing in Agabus raffrayi and A. labiatus (Coleoptera: Dytiscidae) Questioned

    Microsoft Academic Search

    Anders N. Nilsson; Sven Persson

    1990-01-01

    Previous descriptions of species of the dytiscid genus Agabus Leach that are dimorphic in the shape of the metasternal wing are shown to be erroneous. One of the two specimens described as a form of A. labiatus (Brahm) with broad metasternal wings was identified as A. uliginosus (Linnaeus), and the other specimen was not found. The study of a large

  3. Mitochondrial diversity of European pond turtles ( Emys orbicularis) in Anatolia and the Ponto-Caspian Region: Multiple old refuges, hotspot of extant diversification and critically endangered endemics

    Microsoft Academic Search

    Uwe Fritz; Dinçer Ayaz; Anna K. Hundsdörfer; Tatiana Kotenko; Daniela Guicking; Michael Wink; C. Varol Tok; Kerim Çiçek; Jutta Buschbom

    2009-01-01

    The European pond turtle, Emys orbicularis (Linnaeus, 1758), is one of the world's most widely distributed chelonian species. We investigated its mitochondrial phylogeography and demography using ?1300cyt b sequences from the entire range, with a focus on the eastern part, in particular on Turkey, where the species currently suffers massive losses. Coloration data from >1450 turtles were compared with mtDNA

  4. FIRST DATA ON THE GEOGRAPHIC VARIATION OF Emys orbicularis IN UKRAINE: mtDNA HAPLOTYPES, COLORATION, AND SIZE

    Microsoft Academic Search

    T. Kotenko; O. Zinenko; D. Guicking; H. Sauer-Gürth; M. Wink; U. Fritz

    Morphological differences between European pond turtles, Emys orbicularis (Linnaeus, 1758), from the Cri- mea and of other parts of Ukraine were noted for the first time by Szczerbak (1966). He stated that Crimean turtles are reaching a maximum carapacial length of only 160.5 mm and are, therefore, distinctly smaller than in other regions. Szczerbak (1966) believed that this low maximum

  5. INTRODUCTION Understanding both male and female mating beha-

    E-print Network

    (Linnaeus). The two-spot ladybird is a naturally pro- miscuous beetle, with both males and females mating consider male and female mating behaviour in two populations of the two-spot ladybird, Adalia bipunc- tata; Haddrill et al., 2008). Two-spot ladybird populations are known to Eur. J. Entomol. 110(1): 87­93, 2013

  6. Erasmus Darwin's pedagogical purpose in The Loves of the Plants: reconfiguring images of women in Linnaean botany 

    E-print Network

    Peery, Brenda Langworthy

    1997-01-01

    " in the earlier treatment of the blossom as a wedding chamber, Andromeda must accept Perseus and, in the Rosemary's case, she bas no choice but to acquiesce to the bestial rutting that surrounds ber. By evoking the story of Andromeda, Linnaeus presents a...

  7. Occurrence and nest survival of four thrush species on a managed central Appalachian forest

    Microsoft Academic Search

    Rachel L. Dellinger; Petra Bohall Wood; Patrick D. Keyser

    2007-01-01

    The wood thrush (Hylocichla mustelina Gmelin) is a species of concern in the central Appalachians, and is sympatric there with three related species, the American robin (Turdus migratorius Linnaeus), hermit thrush (Catharus guttatus Pallas), and veery (Catharus fuscescens Stephens). Our objectives were to quantify use of mature forests and areas subjected to even-aged harvesting and partial harvesting by these four

  8. Age determination of Scardinius erythrophthalmus (Cyprinidae) inhabiting Bafra Fish Lakes (Samsun, Turkey) based on otolith readings and marginal increment analysis

    Microsoft Academic Search

    Aysun GUMUS; Derya BOSTANCI; Sava YILMAZ; Nazmi POLAT

    2007-01-01

    A B S T R A C T. - Age and growth of S c a rdinius ery t h ro p h t h a l m u s (Linnaeus, 1758) collected from Bafra Fish Lakes between January 2000 and December 2000 were determined by examination of five hard structures. Scales, vertebrae, opercular bones, lagenar and utricular otoliths were

  9. Prey selection by the scyphomedusan predator Aurelia aurita

    Microsoft Academic Search

    B. K. Sullivan; J. R. Garcia; G. Klein-MacPhee

    1994-01-01

    We describe feeding behavior of Aurelia aurita (Linnaeus) using gut content analyses of field-collected specimens and a mesocosm experiment. The field studies were conducted in Narragansett Bay, Rhode Island, USA from March to April 1988, and the mesocosm studies were done at the Marine Ecosystems Research Laboratory at the University of Rhode Island. Patterns of prey selection changed with medusa

  10. FISHES OF THE GULF OF MAINE SNIPE FISHES. FAMILY MACRORHAMPHOSIDAE

    E-print Network

    colopax (Linnaeus) 1758 Jordan and Evermann, 1896-1900, p. 759. De8cription.-The snipe fish is given so, from the coast and Banks of Morocco, where it is sometimes taken in numbers 'and the Mediterranea; WHITE-BAIT; OAPELIN; SPERLING; SHINER Jordan and Evermann, 1896-1900, pp. 800, 2840. Description

  11. Disruptive Body Patterning of Cuttlefish (Sepia officinalis) Requires Visual Information Regarding

    E-print Network

    Hanlon, Roger T.

    Disruptive Body Patterning of Cuttlefish (Sepia officinalis) Requires Visual Information Regarding of Sussex, Brighton, UK Cuttlefish (Sepia officinalis Linnaeus, 1758) on mixed light and dark gravel show of natural substrates that cuttlefish cue on visually are largely unknown. Therefore, we aimed to identify

  12. First detection of olfactory marker protein (OMP) immunoreactivity in the olfactory epithelium of a cartilaginous fish

    Microsoft Academic Search

    Sara Ferrando; Massimiliano Bottaro; Lorenzo Gallus; Laura Girosi; Marino Vacchi; Grazia Tagliafierro

    2007-01-01

    Olfactory marker protein (OMP) is a protein expressed in the mature olfactory and vomeronasal neurons of many vertebrates, such as mammals, amphibians and bony fishes. Aim of this work was to investigate the OMP expression in the olfactory epithelium of the shark Scyliorhinus canicula (Linnaeus, 1758), by immunohistochemistry (IHC). Immunoreactivity was detected in the olfactory receptor neurons, in the crypt

  13. Ranging behaviour and habitat selection of Alpine chamois

    Microsoft Academic Search

    I. Nesti; M. Posillico; S. Lovari

    2010-01-01

    Ranging behaviour and habitat selection of 23 male and 6 female adult (5–10 years old) Alpine chamois Rupicapra rupicapra (Linnaeus 1758) were monitored from February 2000 to December 2002, in an area of the Western Alps. The chamois were radio-located for a minimum of 4 and a maximum of 35 months, until failure of radio transmitters. A mean number of

  14. Phycologia (2006) Volume 45 (3), 331336 Published 1 May 2006 Fluorescence and photosynthetic competency in single eggs and embryos of

    E-print Network

    Jeong, Hae Jin

    2006-01-01

    competency in single eggs and embryos of Ascophyllum nodosum (Phaeophyceae) KWANG YOUNG KIM1 *, HAE JIN JEONG in single eggs and embryos of Ascophyllum nodosum (Phaeophyceae). Phycologia 45: 331­336. DOI: 10 a fluorescence associated with photosystem II in eggs and embryos of Ascophyllum nodosum (Linnaeus) Le Jolis from

  15. Early Iconography of Cannabis sativa and Cannabis indica

    Microsoft Academic Search

    John M. McPartland; Karl W. Hillig

    2008-01-01

    The purpose of this article was to track down the earliest known illustrations of Cannabis. Our in silico search methodology utilized computerized search engines and electronic databases for citation tracking. Many botanists prior to Linnaeus, beginning with Dioscorides, described more than one presumptive type of Cannabis. In some cases they were describing male and female plants of Cannabis sativa L.,

  16. Timing of septal formation in two species of Nautilus based on radiometric and aquarium data

    Microsoft Academic Search

    N. H. Landman; J. K. Cochran; J. A. Chamberlain; D. J. Hirschberg

    1989-01-01

    Growth rates of four Nautilus scrobiculatus Lightfoot and three N. pompilius Linnaeus captured in Papua New Guinea in 1985 were measured using a chronology based on the naturally occurring radionuclides 210Pb and 210Po. The age of the las septum in mature specimens of both species was more than one year, whereas the time of septal formation in a submature specimen

  17. Indigenous harvest, exotic pig predation and local persistence of a long-lived vertebrate: managing a tropical freshwater turtle for sustainability and conservation

    Microsoft Academic Search

    Damien A. Fordham; Arthur Georges; Barry W. Brook

    2007-01-01

    Summary 1. Until recently, the northern snake-necked turtle ( Chelodina rugosa Ogilby, 1890) provided a seasonal source of protein for indigenous communities in tropical northern Australia. Today, feral pigs ( Sus scrofa Linnaeus, 1758) exert a heavy predation pressure on C. rugosa , compromising subsistence harvest rates and threatening local persistence. 2. We investigated the influence of pig predation and

  18. A NEWLY DESCRIBED SPECIES OF ARCTOSTAPHYLOS (ERICACEAE) FROM THE CENTRAL CALIFORNIA COAST

    E-print Network

    Parker, V. Thomas

    uva-ursi (L.) Spreng. origi- nally described by Linnaeus in 1700 to recent descriptions of new speciesA NEWLY DESCRIBED SPECIES OF ARCTOSTAPHYLOS (ERICACEAE) FROM THE CENTRAL CALIFORNIA COAST MICHAEL C, Arctostaphylos ohloneana M.C. Vasey and V.T. Parker, is found scattered within populations of another

  19. FONTQUERIA 55(50): 405-414 [seorsim 1-10] MADRID, 10-II-2007

    E-print Network

    Cardiel, José María

    FONTQUERIA 55(50): 405-414 [seorsim 1-10] MADRID, 10-II-2007 José María CARDIEL SANZ Catálogo de Linnaeus (Euphorbiaceæ) José María CARDIEL SANZ Departamento de Biología, Facultad de Ciencias, Universidad Autónoma de Madrid. Ciudad Universitaria de Canto Blanco. 28049 Madrid. España. e-mail: jm.cardiel

  20. www.ext.vt.edu Produced by Communications and Marketing, College of Agriculture and Life Sciences,

    E-print Network

    Liskiewicz, Maciej

    Administrator, 1890 Extension Program, Virginia State, Petersburg. PUBLICATION 444-288 American Cockroach americana (Linnaeus) AKA: Palmetto bug or water bug Size The American cockroach is a large cockroach and has a yellow margin on the pronotum (region directly behind the head). Immature American cockroaches

  1. Tula virus in populations of small terrestrial mammals in a rural landscape.

    PubMed

    Heroldová, Marta; Pejcoch, Milan; Bryja, Josef; Jánová, Eva; Suchomel, Josef; Tkadlec, Emil

    2010-08-01

    Over 5 years (2000-2004), populations of small mammals from a rural landscape in southern Moravia (Czech Republic) were investigated for the presence of Tula virus (TULV) antigen using the ELISA set Hantagnost. In total, 1566 individuals from 10 species were examined. The prevalence in the common vole (Microtus arvalis Pallas 1778), the main reservoir of TULV, was 10% (n = 871). The prevalence of TULV antigen increases with its population numbers. The highest number of TULV antigen-positive common voles was found in set-aside plots and winter crops, such as rape and winter wheat. All these habitats are important for common vole overwintering. Older and heavier individuals were more often hantavirus antigen positive. From the other small mammal species, 186 pygmy field mice (Apodemus uralensis Pallas, 1811) were examined, of which 3 were positive, which represents the first hantavirus antigen positive record for this species, and of 195 wood mice (Apodemus sylvaticus Linnaeus, 1758) only 1 was positive. The remaining five rodent species (Apodemus flavicollis Melchior, 1834, Mus musculus Linnaeus, 1758, Micromys minutus Pallas, 1771, Myodes glareolus Schreber, 1780, Microtus subterraneus de Sélys-Longchamps, 1836) and two Soricomorpha (Sorex araneus Linnaeus, 1758, Sorex minutus Linnaeus, 1766) were hantavirus antigen negative. PMID:20420534

  2. New information on host plants and distribution ranges of an invasive gall midge, Contarinia maculipennis (Diptera: Cecidomyiidae), and its congeners in Japan

    Microsoft Academic Search

    Nami Uechi; Junichi Yukawa; Makoto Tokuda; Tomoko Ganaha-Kikumura; Masahiro Taniguchi

    2011-01-01

    Gall midges of the genus Contarinia (Diptera: Cecidomyiidae) that infest the flower buds of various plant species have been newly found in Japan in recent years.\\u000a Those infesting the flower buds of Pseuderanthemum laxiflorum (A. Gray) Hubbard ex Baillon (Amaranthaceae) and Jasminum sambac (Linnaeus) Aiton (Oleaceae) in Okinawa Prefecture, and Dendrobium spp. (Orchidaceae) in Mie Prefecture were identified, on the

  3. Efficiency of Fruit Juice Feeding in Morpho peleides (Nymphalidae, Lepidoptera)

    Microsoft Academic Search

    M. C. N. Knopp; H. W. Krenn

    2003-01-01

    We have described the feeding behavior of the frugivorous butterfly Morpho peleides (Butler 1872) under various conditions and tested its ability to take up fluid from selected natural and artificial food sources in comparison with the nectarvorous Vanessa cardui (Linnaeus 1758). Both nymphalids showed similar probing behavior except for one particular proboscis movement and the fact that M. peleides was

  4. Genetic analysis of sympatric morphotypes of common dolphins (genus Delphinus )

    Microsoft Academic Search

    P. E. Rosel; A. E. Dizon; J. E. Heyning

    1994-01-01

    Sympatric populations of two forms of the common dolphin, currently recognized collectively as Delphinus delphis Linnaeus, occur in several areas of the world's oceans. A molecular genetic study was initiated to determine whether these forms are genetically distinct in the Northeast Pacific. We compared mitochondrial DNA sequences from the control region and cytochrome b gene between specimens of the long-beaked

  5. BioControl 46: 197210, 2001. 2001 Kluwer Academic Publishers. Printed in the Netherlands.

    E-print Network

    Richner, Heinz

    retroflexus Linnaeus, A. powellii S. Watson and A. bouchonii Thellung all belong to the section Amaranthus. Biocontrol of Amaranthus spp. in Europe: state of the art H.-M. BÜRKI1 , J. LAWRIE2 , M. P. GREAVES2 , V. M with Amaranthus spp. in Europe. This provides a basis for future introductions of a non-native biocontrol agent

  6. Natural variability in distribution of an intertidal population of Macoma balthica subject to potential oil pollution at Port Valdez, Alaska

    Microsoft Academic Search

    R. T. Myren; J. J. Pella

    1977-01-01

    Natural variability in the abundance of an intertidal population of the lamellibranch Macoma balthica (Linnaeus, 1758) was measured during 1971 and 1972 in a study area near the proposed oil storage and tankship loading facility at the southern terminus of the Trans-Alaska pipeline in Port Valdez, Alaska. M. balthica were divided for analysis into a large and a small size

  7. Indian mustard as a trap crop for management of major lepidopterous pests on cabbage

    Microsoft Academic Search

    K. Srinivasan; P. N. Krishna Moorthy

    1991-01-01

    Indian mustard (Brassica juncea (L.) Czern.) was found to be a preferred host for oviposition by diamondback moth, Plutella xylostella (Linnaeus) and leafwebber, Crocidolomia binotalis Zeller as compared to cabbage (Brassica oleracea var. capitata L.) in laboratory studies. Three field trials with different planting patterns of both cabbage and mustard were conducted to investigate whether mustard could act as a

  8. Entomological Research 36 (2006) 196201 2006 The Authors

    E-print Network

    Eastwood, Rod

    2006-01-01

    yellowing or loss of plant foliage and a poor fruit set. Wax scales also secrete sticky honeydew scale Ceroplastes rusci (Linnaeus) is a serious pest of fruit trees in many countries. In the present in fruit orchards, in south-east Vietnam. Captive populations of C. rusci were established to record life

  9. Ovipositional Rhythmicity in Ladybirds (Coleoptera: Coccinellidae): A Laboratory Study

    Microsoft Academic Search

    Omkar; Geetanjali Mishra; Shefali Srivastava; Avanish K. Gupta

    2004-01-01

    Complete and diel ovipositional rhythms have been observed in three aphidophagous ladybirds (Coleoptera: Coccinellidae): Coccinella septempunctata Linnaeus, Coccinella transversalis Fabricius and Propylea dissecta (Mulsant) for the first time. The complete ovipositional rhythm could be described in terms of a polynomial curve and daily fluctuations in all three species. In the diel cycle, all three ladybird species oviposited significantly in the

  10. Behavioural use of seismic cues by the sandswimming lizard Scincus scincus

    Microsoft Academic Search

    Thomas E. Hetherington

    1992-01-01

    The sandfish lizard, Scincus scincus (Linnaeus) inhabits the deserts of Africa and the Middle East and spends most of its time buried in the sand. Laboratory experiments have determined that Scincus can respond and orient to insects on the sand surface by detecting vibrations produced by movements of the insects. When buried, Scincus can detect and respond to crickets and

  11. Mari~eBiologyutters. 5~"~47-53 CHARACTERISTICS OF ARSENIC IN A MARINE MOLLUSC AND

    E-print Network

    Canberra, University of

    Mari~eBiologyutters. 5~"~47-53 ElsevIer ' MOL 00240 CHARACTERISTICS OF ARSENIC IN A MARINE MOLLUSC et al., 1979), investigations of arsenic in molluscs and crustaceans have beenunsystematic (Chap- manSciencePublishersB.V. #12;~ 48 arseniccompound(s)presentin a mollusc Merceneriamerceneria(Linnaeus)and a crustacean

  12. Phylogenetic relationships among Palearctic and Nearctic burbot ( Lota lota): Pleistocene extinctions and recolonization

    Microsoft Academic Search

    J. K Van Houdt; B Hellemans; F. A. M Volckaert

    2003-01-01

    The burbot (Lota lota Linnaeus, 1758) is the only freshwater species from the cod family. Various taxonomic hypotheses were tested against molecular data by sequencing the mitochondrial cytochrome b locus of 120 burbot from 41 populations together with the related species Molva molva (ling) and Brosme brosme (tusk), which represented the other Lotinae genera. Within the genus Lota two distinct

  13. Allozymes and morphometric characters of three species of Mytilus in the Northern and Southern Hemispheres

    Microsoft Academic Search

    J. H. McDonald; R. Seed; R. K. Koehn

    1991-01-01

    Many authors have considered the common mussels in temperate waters of the Northern and Southern Hemispheres to be a single cosmopolitan species,Mytilus edulis Linnaeus, 1758. Others have divided these mussels into several subspecies or species. Samples of mussels were collected from 36 locations in the Northern Hemisphere and nine locations in the Southern Hemisphere. Electrophoretic evidence from eight loci indicates

  14. Culture of coquina clam, Donax trunculus, larvae

    Microsoft Academic Search

    Paz Ruiz-Azcona; Rafael Rodríguez-Sierra; Josefa B. Martín

    1996-01-01

    The objective of this study was to determine whether the larvae of Donax trunculus Linnaeus (1758; Mollusca: Bivalvia) could be cultured. This paper reports the results of two experiments to examine larval culture conditions. In the first, two temperatures (17 °C and 20 °C) and the effect of antibiotics were tested. The second experiment was carried out to study the

  15. Race and Genomics. Old Wine in New Bottles?

    Microsoft Academic Search

    Staffan Müller-Wille; Hans-Jörg Rheinberger

    2008-01-01

    Th e topic was not only chosen because of its timeliness. It so happened that the ISHPSSB meeting also coincided with the tercentenary of both Georges Buff on and Carl Linnaeus. Both are arguably the founding fathers of modern biology, with the emphasis they put on the reproduction rather than the generation of living beings (Müller-Wille\\/Rheinberger 2007). But there is

  16. Published in Without Nature: A New Condition for Theology (David Albertson and Cabell King, Eds.), Fordham Univ. Press, 2009

    E-print Network

    Newman, Stuart A.

    .), Fordham Univ. Press, 2009 http://www.fordhampress.com/detail.html?id=9780823230709 Renatured Biology with its own "nature," related to one another only through a common ancestor (the human race-Enlightenment founders of modern biology: Carl Linnaeus, Georges-Louis Leclerc, Comte de Buffon, Gregor Mendel, Matthias

  17. Distribution and diversity of the soil mites of Svalbard, with redescriptions of three known species (Acari: Oribatida)

    Microsoft Academic Search

    Badamdorj Bayartogtokh; Heinrich Schatz; Torbjørn Ekrem

    2011-01-01

    Three species of oribatid mites, Camisia dictyna Colloff, 1993, Ceratoppia sphaerica (L. Koch, 1879) and Diapterobates notatus (Thorell, 1871) are studied in detail, and their supplementary descriptions with precise illustrations are presented. The specimens were collected from the soils of the Snow Bunting (Plectrophenax nivalis Linnaeus, 1758) nest site areas in the Arctic archipelago Svalbard. Camisia dictyna is recorded as

  18. The queen conch fishery on Pedro Bank, Jamaica: discovery, development, management

    Microsoft Academic Search

    Karl A Aiken; G Andre Kong; Stephen Smikle; Robin Mahon; Richard Appeldoorn

    1999-01-01

    The history, methods, problems and regulation of fishing of the last remaining large queen conch resource in the world, located on a Jamaican fishing bank, are examined. The fishery activities for the queen conch, Strombus gigas Linnaeus are briefly described with the main activities in the industrial sector which produce the bulk of the harvest, which is exported. There are

  19. A new species of Urophora Robineau-Desvoidiy, 1830 (Diptera, Tephritidae) from Iran

    PubMed Central

    Namin, Saeed Mohamadzade; Nozari, Jamasb

    2011-01-01

    Abstract Urophora merzi sp. n. reared from flower heads of Centaurea behen Linnaeus is described from Iran. It is similar to Urophora campestris, Urophora sachalinensis, Urophora stylata, Urophora tsoii and Urophora vera in wing pattern with 3 well developed crossbands and indistinct subbasal crossband, differing in aculeus tip with two pairs of diminished preapical steps and different host plants. PMID:22287906

  20. HELMINTH FAUNA OF SANDHILL CRANE POPULATIONS IN TEXAS

    Microsoft Academic Search

    Glen D. Gaines; Robert J. Warren; Danny B. Pence

    Three species of trematode (Orchipedium jolliei Schell, 1967; Prohyptiamus grusi Kocan, Waldrup, Ramakka, and Iverson, 1982; Echinostoma revolutum (Froelich, 1802)), three species of nematode (Tetrameres grusi Shumakovich, 1946; Synhimanthus sp.; Contracaecum sp.), and one species of cestode (Anomotaenia sp.) were recovered from 146 sandhill cranes, Grus canadensis (Linnaeus), collected in Alaska, Canada, and two areas in Texas. The only common

  1. The thermal properties of beeswaxes: unexpected findings

    Microsoft Academic Search

    Robert Buchwald; Michael D. Breed; Alan R. Greenberg

    2008-01-01

    SUMMARY Standard melting point analyses only partially describe the thermal properties of eusocial beeswaxes. Differential scanning calorimetry (DSC) revealed that thermal phase changes in wax are initiated at substantially lower temperatures than visually observed melting points. Instead of a sharp, single endothermic peak at the published melting point of 64°C, DSC analysis of Apis mellifera Linnaeus wax yielded a broad

  2. Artificial Propagation of Sunfishes, with Meristic Comparisons of Three Species of Lepomis and Five of Their Hybrids

    Microsoft Academic Search

    R. Oneal Smitherman; F. Eugene Hester

    1962-01-01

    All possible crosses among three species of sunfishes—the bluegill, Lepomis macrochirus Rafinesque; the redear, Lepomis microlophus (Günther); and the redbreast, Lepomis auritus (Linnaeus)—were successfully produced. One cross, female redbreast X male bluegill, was made by placing one adult of each species in a plastic pool and allowing them to spawn. The five remaining crosses were produced two to nine times

  3. Organochlorine and mercury contamination in fish tissues from the River Nestos, Greece

    Microsoft Academic Search

    Achilleas Christoforidis; Nikolaos Stamatis; Klaus Schmieder; Efstathios Tsachalidis

    2008-01-01

    Polychlorinated biphenyls (PCBs), hexachlorocyclohexane (HCH) isomers, dichlorodiphenyltrichloroethane (DDT) and its metabolites, other organochlorine pesticides such as hexachlorobenzene (HCB), chlordane compounds (CHLs, including trans-chlordane and cis- and trans-nonachlor) and the heavy metal mercury were quantified in muscle and liver of the European chub (Leuciscus cephalus, Linnaeus, 1758) and in the muscle of the barbel (Barbus cyclolepis, Heckel, 1837) at two sampling

  4. Ein unbekanntes Porträt von Linné in Wien

    Microsoft Academic Search

    H. Walter Lack

    The Institute of Botany, University of Vienna, preserves a remarkable portrait of Carolus Linnaeus in stone. It is a scagliola made by Wolfgang Kopp in c. 1800. This work is based on a copper engraving by A. Âker- man showing the famous Swedish naturalist in profile.

  5. Impact of Genomics on the Reconstruction of Evolutionary Relationships of Nitrogen-Fixing Bacteria and Implications for Taxonomy

    Microsoft Academic Search

    P. VAN BERKUM; B. D. EARDLY

    1. SYSTEMATICS Swedish botanist Carolus Linnaeus (Karl von Linné) introduced a system of classification of plants based on overall morphological similarities among their sexual organs. He established a workable classification of living organisms in his Systema Naturae published in 1735 that resulted in the birth of modern taxonomy. The Linnaean System of classification is a hierarchy that includes the categories

  6. Chela loss in the shore crab Carcinus maenas (Crustacea: Brachyura) and its effect on mating success

    Microsoft Academic Search

    P. Abello; C. G. Warman; D. G. Reid; E. Naylor

    1994-01-01

    Field and experimental studies were conducted to determine the incidence of chela loss and its effect on mating success in a population of the shore crab Carcinus maenas (Linnaeus, 1758) inhabiting the Menai Straits, North Wales. The study was performed between 1989 and 1993. Male crabs showed a higher degree of chela loss (12.5%) than females (7.9%). In males, frequencies

  7. Movements of blue sharks ( Prionace glauca ) in depth and course

    Microsoft Academic Search

    F. G. Carey; J. V. Scharold; Ad. J. Kalmijn

    1990-01-01

    Acoustic telemetry was used to follow 22 blue sharks,Prionace glauca (Linnaeus), over the continental shelf and slope in the region between George's Bank and Cape Hatteras between 1979 and 1986. The sharks frequently made vertical excursions between the surface and depths of several hundred meters. The oscillations, which were repeated every few hours, were largest in the daytime and were

  8. Annual re-sightings of photographically identiWed white sharks (Carcharodon carcharias) at an eastern PaciWc aggregation site (Guadalupe Island, Mexico)

    Microsoft Academic Search

    Michael L. Domeier; Nicole Nasby-Lucas

    A systematic, reliable method for identify- ing white sharks, Carcharodon carcharias Linnaeus, from underwater photographs was developed and applied to examine site Wdelity at Guadalupe Island, Mexico (29°N, 118°W). The most reliable features for repeat identiWcation in multiple years were the pig- ment patterns on the gill Xaps, pelvic Wns, and caudal Wns. Pigment patterns in all three regions were

  9. Molecular identification and the features of genetic diversity in interspecific hybrids of Amur sturgeon ( Acipenser schrenckii × A. baerii, A. baerii × A. schrenckii, A. schrenckii × A. ruthenus , and A. ruthenus × A. schrenckii ) based on variability of multilocus RAPD markers

    Microsoft Academic Search

    K. V. Rozhkovan; G. N. Chelomina; E. I. Rachek

    2008-01-01

    The method of polymerase chain reaction with random primers (RAPD PCR) was used to identify the progeny of the crosses between\\u000a three sturgeon species, Amur sturgeon (Acipenser schrenckii Brandt, 1869), Siberian sturgeon (A. baerii Brandt, 1869), and sterlet (A. ruthenus Linnaeus, 1758). Using ten primers, genetic variation in 70 yearlings, produced in seven individual crosses: Acipenser schrenckii × A. schrenckii,

  10. Herpetology Spring 2014 Professor: Jennifer Dever

    E-print Network

    Dever, Jennifer A.

    die immediately" he can say about some snakes. From -The lectures of Linnaeus concerning the animal kingdom A. Class Amphibia Amphibians (~7,231 species) http://www.amphibiaweb.org/ Class Anura Class) Classification of the Ophidia (1895) The Crocodilians, Lizards and Snakes of North America (1900) #12;1/21/14 5

  11. GROWTH AND AGE STRUCTURE OF LARVAL ATLANTIC HERRING, CLUPEA HARENGUS HARENGUS, IN THE SHEEPSCOT RIVER ESTUAKY,

    E-print Network

    GROWTH AND AGE STRUCTURE OF LARVAL ATLANTIC HERRING, CLUPEA HARENGUS HARENGUS, IN THE SHEEPSCOT AND JOSEPH J. GRAHAM3 ABSTRACf Larval Atlantic herring, Clupea harengus harengus, were sampled. Research on larval Atlantic herring, Clupea harengus harengus Linnaeus, has been conducted extensively

  12. The influence of awns on yield and certain morphological characters of wheat

    E-print Network

    Norris, Milton J

    1951-01-01

    . Soc, . '. ?"ron 14:57 62 ~ I&j;. , " 12, Hays, HiKi and Immer~ F, E, '. fethods of plant breeding, HcGraw-iiill Inc, Kew York. 1942. 13 ' and Garber, R, J. i reading of crop plants. . de 2. YicGraw Hill Inc, llew York, 192/, 14. ~ Linnaeus, C...

  13. Long-term changes in the Georges Bank food web: trends in stable isotopic compositions of fish scales

    Microsoft Academic Search

    S. C. Wainright; M. J. Fogarty; R. C. Greenfield; B. Fry

    1993-01-01

    Fish scales from seven species of demersal fish in an archival collection were analyzed for stable isotopic compositions of carbon and nitrogen to study long-term changes in trophic structure of the Georges Bank food web. Nitrogen isotopic compositions are often used to infer trophic level. In the case of haddock, Melanogrammus aeglefinus (Linnaeus), there was a trend towards feeding at

  14. NEW RECORDS OF WATER BEETLE SPECIES OF THE FAMILY HYDROPHILIDAE (COLEOPTERA) FROM MONTENEGRO (SE EUROPE)

    Microsoft Academic Search

    V. M. P EŠI; A. PAVI EVI

    2003-01-01

    New records of water beetle species of the family Hydrophilidae (Coleoptera) from Montenegro (SE Europe) are given. Ten species are identified, four of which: Berosus luridus (Linnaeus, 1761), Helochares lividus (Forster, 1771), Enochrus testaceus (Fabricius, 1801), and Enochrus coarctatus (Gredler, 1863) are new for the fauna of Montenegro.

  15. Yolk androgens vary inversely to maternal androgens in Eastern Bluebirds: an experimental study

    Microsoft Academic Search

    K. J. NAVARA; L. M. SIEFFERMAN; G. E. HILL; M. T. MENDONÇA

    2006-01-01

    Summary 1. Female birds deposit variable amounts of androgens in the yolks of their eggs, and it has been suggested that yolk androgen deposition is an adaptive mechanism preparing offspring for a competitive environment. Breeding pairs of Eastern Bluebirds ( Sialia sialis ) Linnaeus were stimulated with an intruder presentation while ovarian follicles were developing. Yolk steroid concentrations in eggs

  16. Simultaneous detection of Pyrethroid, Organophosphate and Cyclodiene target site resistance in Haematobia irritans (Diptera: Muscidae) by multiplex Polymerase chain reaction

    Technology Transfer Automated Retrieval System (TEKTRAN)

    The horn fly, Haematobia irritans irritans (Linnaeus, 1758), is an important pest that causes significant economic losses to the livestock industry, but insecticide resistance in horn fly populations has made horn fly control increasingly difficult to achieve. In this study, we developed a multiplex...

  17. Integrated Control of Diamondback Moth and Other Insect Pests Using an Overhead Sprinkler System, an Insecticide, and Biological Control Agents, on a Watercress Farm in Hawaii

    Microsoft Academic Search

    Larry M. Nakahara; John J. McHugh; Clarence K. Otsuka; George Y. Funasaki; Po-Yung Lai

    The diamondback moth, Plutella xylostella (Linnaeus), was effectively and economically controlled on a 3.84 ha commercial watercress farm at Aiea, Oahu, Hawaii, through the implementation of an overhead sprinkler irrigation system and the establishment of a larval parasite, Cotesia plutellae (Kurdjumov). The intermittent application of water on the watercress field during the early evening hours is believed to disrupt the

  18. (1947-1958) Proposals to reject twelve names emanating from Loefling's Iter Hispanicum (1758), Ayenia sidiformis (Malvaceae), Cofer (Symplocaceae), Cruzeta and C. hispanica (Amaranthaceae), Edechia inermis and E. spinosa...

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Pehr Loefling’s Iter Hispanicum, published posthumously in 1758 by Linnaeus, is one of the earliest sources of American plant names. However, all of these names lack original material for typification, as there were no published figures for them and Loefling’s American specimens were all apparently ...

  19. Wave modeling and fault localization for underwater power cables

    Microsoft Academic Search

    Sven Nordebo; Borje Nilsson; Thomas Biro; Gokhan Cinar; Mats Gustafsson; Stefan Gustafsson; Anders Karlsson; Mats Sjoberg

    2011-01-01

    This paper describes some prelimi- nary results regarding Time-Domain pulse Reflec- tion (TDR) measurements and modeling performed on the Baltic Cable submarine HVDC link between southern Sweden and northern Germany. The mea- surements were conducted in collaboration between the Linnaeus University, Lund University, Baltic Ca- ble AB and ABB High Voltage Cables AB, and is part of the research project:

  20. Lueheia inscripta (Westrumb, 1821) (Acanthocephala: Plagiorhynchidae) in anurans (Leptodactylidae: Bufonidae) from Mexico.

    PubMed

    Salgado-Maldonado, G; Caspeta-Mandujano, J M

    2010-06-01

    Juveniles of Lueheia inscripta (Westrumb, 1821 Travassos, 1919 (Acanthocephala: Plagiorhynchidae), an acanthocephalan with six lemnisci, are reported and described from mesenteries of frogs Leptodactylus fragilis Brochi, 1877 and a toad Bufo marinus (Linnaeus, 1758) from Morelos state, Mexico. These are new host records extending the known geographical distribution of this species from Brazil and Puerto Rico to Mexico. PMID:20597444

  1. MAMMALIAN SPECIES No. 721, pp. 18, 3 figs. Mellivora capensis. By Jana M. Vanderhaar and Yeen Ten Hwang

    E-print Network

    Hayssen, Virginia

    . Meles: Thunberg, 1811:306. Part, not Meles Linnaeus (vide Sclater 1900). Gulo Desmarest, 1820:176. Type species Gulo capensis ( Gulo mellivora Smith). Ratellus Gray, 1827:118. Based on Viverra capensis Schreber). Gulo capensis Desmarest, 1820:176. Type locality ``Vicinity of Cape of Good Hope.'' Gulo mellivora

  2. Beitr. Palont., 26:195, Wien 2001 Gulo gulo (Mustelidae, Mammalia) im Jungpleistozn

    E-print Network

    Döppes, Doris

    Beitr. Paläont., 26:1­95, Wien 2001 Gulo gulo (Mustelidae, Mammalia) im Jungpleistozän Mitteleuropas von Doris DÖPPES*) DÖPPES, D., 2001. Gulo gulo (Mustelidae, Mammalia) im Jungpleistozän Mitteleuropas. -- Beitr. Paläont., 26:1­95, Wien. Inhalt 1. Biologie des rezenten Gulo gulo (LINNAEUS, 1758

  3. Study of insect succession and rate of decomposition on a partially burned pig carcass in an oil palm plantation in Malaysia

    Microsoft Academic Search

    Heo Chong Chin; Mohamad Abdullah Marwi; Ahmad Firdaus Mohd; John Jeffery; Hiromu Kurahashi; Baharudin Omar

    2008-01-01

    Insects found associated with corpse can be used as one of the indicators in estimating postmortem interval (PMI). The objective of this study was to compare the stages of decomposition and faunal succession between a partially burnt pig (Sus scrofa Linnaeus) and natural pig (as control). The burning simulated a real crime whereby the victim was burnt by murderer. Two

  4. Crustaceana 85 (7) 779-787 LATITUDINAL VARIATION IN THE REPRODUCTIVE CYCLE AND SIZE

    E-print Network

    Aiken, Ron

    Crustaceana 85 (7) 779-787 LATITUDINAL VARIATION IN THE REPRODUCTIVE CYCLE AND SIZE OF THE NORTHERN ROCK BARNACLE SEMIBALANUS BALANOIDES (L.) (CIRRIPEDIA, ARCHAEOBALANIDAE) IN THE BAY OF FUNDY, 2000). The acorn (or northern rock) barnacle, Semibalanus balanoides (Linnaeus, 1767), is a common

  5. Morphological variation of horse mackerel (Trachurus trachurus) in the Iberian and North African Atlantic: implications for stock identification

    Microsoft Academic Search

    Alberto G. Murta

    2000-01-01

    The current delimitation of the Atlanto-Iberian stock of horse mackerel, Trachurus trachurus (Linnaeus, 1758), is based on scant biological evidence. Here, the location of the southern boundary of this stock is investigated through the analysis of several morphometric and meristic characteristics. A total of 384 horse mackerel were sampled from three areas off the Portuguese, one off the Spanish (Gulf

  6. Indiana's "Most Unwanted" Invasive Plant Pest List FY 2007 The Indiana "Most Unwanted" List, compiled by the Indiana Cooperative Agricultural Pest Survey (CAPS)

    E-print Network

    Ginzel, Matthew

    significant economic impact) = More than 70 counties Insects E,I,R,NF Asian gypsy moth Lymantria dispar dispar majalis (Razoumowsky) E,I,R,LD European gypsy moth Lymantria dispar Linnaeus E,I,R,NF European hardwood,I,NF Fruit piercing moth Othreis fullonia (Clerk) E,I,NF Fruit tree tortrix moth Archips podana (Scopoli) E

  7. Ontogenetic Change in Digestive Enzyme Activity of Larval and Postlarval White Shrimp Penaeus setiferus (Crustacea, Decapoda, Penaeidae)

    Microsoft Academic Search

    DONALD L. LOVETT; DARRYL L. FELDER

    Whole specimens of developmental stages of Penaeus setiferus (Linnaeus, 1767) were homogenized and assayed for activities of digestive enzymes. In all de- velopmental stages, activities were present for trypsin, carboxypeptidase A and B, amylase, and non-specific es- terase; none for pepsin or lipase were detected. Activities assayed with substrates for chymotrypsin and aminopep- tidase are not apparently due to the

  8. HABITUATION OF THE CARDIAC RESPONSE TO INVOLUNTARY DIVING IN DIVING AND DABBLING DUCKS

    Microsoft Academic Search

    GEOFFREY R. J. GABBOTT; DAVID R. JONES

    SUMMARY 1. Bradycardia in response to forced submergence was habituated in dabbling (Anas platyrhynchos, Linnaeus) and diving (Aythya americana, Eyton) ducks by repetitively submerging the animals, each day for several days, for periods of 40 and 20 s, respectively. The onset of pronounced bradycardia was delayed with each successive trial, until little or no bradycardia occurred during submergence. Diving bradycardia

  9. Short Research Note Recovery of the seagrass Zostera marina in a disturbed Mediterranean lagoon

    E-print Network

    Boudouresque, Charles F.

    these changes, a wide diversity of species disappeared, including the eelgrass Zostera marina, a keystone of absence, patches of eelgrass were observed in 2001 and 2002 but the success of future recolonization by this community is uncertain. Introduction Until the late 1960s, meadows of the eelgrass Zostera marina Linnaeus

  10. ORIGINAL ARTICLE The clam sipho as indicator for growth indices in the soft-shell

    E-print Network

    Zettler, Michael

    ORIGINAL ARTICLE The clam sipho as indicator for growth indices in the soft-shell clam Mya arenaria to the species' deep burrowing behav- iour, growth parameters of the soft-shell clam Mya arenaria L. 1758 growth model Introduction The soft-shell clam Mya arenaria Linnaeus, 1758, originates from the Northwest

  11. Gonad development, growth and condition of some demersal fishes in the northern Gulf of Mexico during 1978 and 1979

    E-print Network

    Pitre, Randy Louis

    1980-01-01

    (Cynoscion arenarius), silver seatrout (Cynoscion nothus), southern kingfish (Menticirrhus americanus) and star drum (Stellifer lanceolatus) occurring at two study areas known as West Hackberry (Lat. 29o40. 0' N, Long. 93 28. 0' W) and Weeks Island (Lat... Gonad Development and Spawning. . . . . . . . . Growth and Size ? Class Representation. . . Condition Discussion. SOUTHERN KINGFISH, Menticirrhus americanus (LINNAEUS). Previous Findings. Current Findings Gonad Development and Spawning...

  12. Reproduction and life history strategies of the common jellyfish, Aurelia aurita, in relation to its ambient environment

    Microsoft Academic Search

    Cathy H. Lucas

    2001-01-01

    The scyphozoan Aurelia aurita (Linnaeus) is a cosmopolitan species, having been reported from a variety of coastal and shelf sea environments around the world. It has been extensively studied over the last 100 years or so, and examination of the literature reveals three striking features: (1) the presence of populations in a wide range of environmental conditions; (2) large inter-population

  13. MAMMALIAN SPECIES No. 647, pp. 111, 3 figs. Ursus americanus. By Serge Larivie`re

    E-print Network

    Hayssen, Virginia

    of Thalarctos Gray. Myrmarctos Gray, 1864:694. Type species Myrmarctos eversmanni Gray ( Ursus arctos Linnaeus arctos yesoensis Lydekker ( Ursus arctos lasiotus Gray). Melanarctos Heude, 1898:18. Type species) and consider 4 living species of Ursus: americanus, arctos, maritimus, and thibetanus. Other extant bears

  14. Plantago in New Mexico .....................1

    E-print Network

    Johnson, Eric E.

    at high elevations... P. tweedyi (Continued on page 2, Plantago) #12;Page 2 (Plantago, Continued from page· Plantago in New Mexico .....................1 · New Plant Distribution Records cognitiorem tradit. -- Linnaeus May 2, 2001Number 18 THE GENUS PLANTAGO (PLANTAGINACEAE) IN NEW MEXICO Robert

  15. Morphometric and molecular characterization of the species of Uncinaria Frölich, 1789 (Nematoda) parasitic in the Australian fur seal Arctocephalus pusillus doriferus (Schreber), with notes on hookworms in three other pinniped hosts.

    PubMed

    Ramos, Paul; Lynch, Michael; Hu, Min; Arnould, John P Y; Norman, Richard; Beveridge, Ian

    2013-05-01

    This study presents morphological and molecular data on hookworms from the Australian fur seal Arctocephalus pusillus doriferus (Schreber) currently identified in Australian waters as Uncinaria hamiltoni Baylis, 1933. Additional specimens from the Australian sea lion Neophoca cinerea (Péron) and the New Zealand fur seal Arctocephalus forsteri (Lesson) from Australia, and the Southern elephant seal Mirounga leonina (Linnaeus) from Antarctica, were included. Using the internal transcribed spacer (ITS), hookworms from A. p. doriferus, N. cinerea and A. forsteri were found to be genetically similar but distinct from Uncinaria spp. found in M. leonina from Antarctica, as well as from Zalophus californianus (Lesson) and Callorhinus ursinus (Linnaeus) from California. Few morphological differences were detected between these taxa. PMID:23595493

  16. Hydroids of the genus Sertularella (Cnidaria: Hydrozoa: Sertulariidae) from the Pacific coast of Canada in the collection of the Royal Ontario Museum, with descriptions of four new species.

    PubMed

    Choong, Henry H C

    2015-01-01

    Examination of the hydroid fauna of the Canadian Pacific coast in the collections of the Royal Ontario Museum collected between 1934 and 1985 indicates that the genus Sertularella Gray, 1848 from the infralittoral zone in the region remains poorly enumerated. The present study shows that several European or northeast Atlantic hydroid species, Sertularella conica Allman, 1877, Sertularella rugosa (Linnaeus, 1758), Sertularella tenella Alder, 1856, Sertularella polyzonias (Linnaeus, 1758), and Sertularella fusiformis (Hincks, 1861) have been incorrectly reported from the west coast of North America and suggests that assumptions of cosmopolitanism of some species require verification by continuing refinement of regional species-level taxonomy. Four new species, Sertularella cervicula, S. coronata, S. sacciformis, and S. pacifica are recognized and described in this paper. Sertularella gigantea Hincks, 1874 is recognized for the first time from the Pacific coast of North America. PMID:25781750

  17. Karyomorphometry on three polyploid species of Arum L. (Araceae, Aroideae).

    PubMed

    Turco, Alessio; Medagli, Pietro; Albano, Antonella; D'Emerico, Saverio

    2014-01-01

    In this study three polyploid Arum Linnaeus, 1753 species from Southern Italy were chromosomally investigated. Arum italicum Miller, 1768 was found to have 2n = 84 chromosomes and a karyotype composed of numerous asymmetric chromosomes. Arum maculatum Linnaeus, 1753 and Arum apulum (Carano) P. C. Boyce, 1993 were found to have 2n = 56 chromosomes. In the examined taxa some chromosome pairs were characterized by the presence of weakly coloured Feulgen-stained segments. The karyotype morphology of Arum italicum was found to be similar to that of Arum maculatum, but the more asymmetrical karyotype and numerous weakly coloured Feulgen-stained segments observed in the former suggest the existence of more extensive rearrangements. In contrast, Arum apulum was observed to have a symmetrical karyotype. The A1, A2 and SYi karyotype asymmetry indices are presented. The relationships between these taxa in terms of karyotype morphology and evolution are discussed. PMID:24744834

  18. Does iron inhibit cryptoendolithic microbial communities?

    NASA Technical Reports Server (NTRS)

    Johnston, C. G.; Vestal, J. R.; Friedmann, E. I. (Principal Investigator)

    1988-01-01

    Photosynthetic activity of three cryptoendolithic microbial communities was studied under controlled conditions in the laboratory. In two of these communities, the dominant organisms were lichens, collected from Linnaeus Terrace and from Battleship Promontory. The third community, dominated by cyanobacteria, was collected from Battleship Promontory. Both sites are in the ice-free valleys of southern Victoria Land. Previous efforts have shown how physical conditions can influence metabolic activity in endolithic communities (Kappen and Friedmann 1983; Kappen, Friedmann, and Garty 1981; Vestal, Federle, and Friedmann 1984). Biological activity can also be strongly influenced by the chemical environment. Inorganic nutrients such as nitrate, ammonia, and phosphate are often limiting factors, so their effects on photosynthetic carbon-14 bicarbonate incorporation were investigated. Iron and manganese are two metals present in Linnaeus Terrace and Battleship Promontory sandstones, and their effects on photosynthesis were also studied. The results may add to our understanding of biogeochemical interactions within this unique microbial community.

  19. Aphids on Cruciferous Crops: Identification and Management 

    E-print Network

    Liu, Tong-Xian; Sparks Jr., Alton N.

    2001-08-10

    erysimi (Kaltenbach); green peach aphid, Myzus persicae (Sulzer); poplar petiole gall aphid or cabbage root aphid, Pemphigus populitransversus Riley; cabbage aphid, Brevicoryne brassicae (Linnaeus); and cotton aphid, Aphis gossypii Glover. The turnip aphid... of parasitic wasps help regulate aphid popula- tions in vegetables. Two of the most common are Lysiphlebus testaceipes and Diaeretiella rapae. The adult wasps are tiny and seldom seen, but their presence is readily observed. Aphids that have been parasitized...

  20. Diet of free-ranging American mink and European polecat in Denmark

    Microsoft Academic Search

    Mette Hammershøj; Erik A. Thomsen; Aksel B. Madsen

    2004-01-01

    Stomach and intestine contents of 211 American minkMustela vison Schreber, 1777 from two areas (Thy and Bornholm) in Denmark and stomach contents of 47 polecatsM. putorius Linnaeus, 1758 from Thy were analysed. Sympatric mink (from Thy) preyed mostly on mammals (55% occurrence), followed by amphibians\\u000a (36%), birds (33%) and fish (30%), whereas polecat preyed mostly on amphibians (87%) and mammals

  1. Development and characterization of 17 polymorphic microsatellite loci in the faucet snail, Bithynia tentaculata (Gastropoda: Caenogastropoda: Bithyniidae)

    Microsoft Academic Search

    Justin P. Henningsen; Stacey L. Lance; Kenneth L. Jones; Cris Hagen; Joshua Laurila; Rebecca A. Cole; Kathryn E. Perez

    2010-01-01

    Bithynia tentaculata (Linnaeus, 1758), a snail native to Europe, was introduced into the US Great Lakes in the 1870’s and has spread to rivers\\u000a throughout the Northeastern US and Upper Mississippi River (UMR). Trematode parasites, for which B. tentaculata is a host, have also been introduced and are causing widespread waterfowl mortality in the UMR. Waterfowl mortality is caused\\u000a by

  2. Effects of Copper Sulfate on Typha latifolia Seed Germination and Early Seedling Growth in Aqueous and Sediment Exposures

    Microsoft Academic Search

    S. L. Muller; D. B. Huggett

    2001-01-01

    The vascular macrophyte Typha latifolia Linnaeus (common cattail) may be a sentinel for evaluating potential phytotoxicity to rooted aquatic macrophytes in aquatic\\u000a systems. To further evaluate the potential utility of this species, T. latifolia seed germination, shoot growth, and root elongation were measured in 7-day aqueous exposures using mean measured aqueous\\u000a copper concentrations of 10.0, 23, 41, 62, 174, and

  3. Mitochondrial DNA divergence and phylogenetic relationships in mullets (Pisces: Mugilidae) of the Sea of Japan and the Sea of Azov revealed by PCR-RFLP-analysis

    Microsoft Academic Search

    A. V. Semina; N. E. Polyakova; M. A. Makhotkin; V. A. Brykov

    2007-01-01

    Three Mugilid species: Mugil cephalus (Linnaeus, 1758) and Liza haematocheila (Temminck et Schlegel, 1845; syn. Mugil soiuy, M. haematocheilus, L. soiuy, Chelon haematocheilus) from the Sea of Japan, as well as M. cephalus and Liza aurata (Risso, 1810) from the Sea of Azov were investigated on the basis of PCR-RFLP analysis of mitochondrial DNA (mtDNA) fragments,\\u000a which included 12S\\/16S rRNA,

  4. Habitat preferences of the native badger and the invasive raccoon dog in southern Finland

    Microsoft Academic Search

    Kaarina Kauhala; Miina Auttila

    2010-01-01

    We compared the habitat preferences of the alien raccoon dog Nyctereutes procyonoides (Gray, 1834) and the native badger Meles meles (Linnaeus, 1758) in two areas (Ruissalo and Tuulos) in southern Finland by radio-tracking the animals during summer from\\u000a 2005 to 2008. We assumed that the habitat preferences of these two medium-sized carnivores differ to some extent (ie they\\u000a are able

  5. Sexual dimorphism in the skull of the European mink Mustela lutreola from NW part of Russia

    Microsoft Academic Search

    Alexei V. Abramov; Igor L. Tumanov

    2003-01-01

    Morphometric variation in 22 characters of 86 skulls of the European minkMustela lutreola (Linnaeus, 1761), from the NW part of Russia, has been analysed. Stepwise discriminant analysis was used to estimate craniometric\\u000a variables for sex determinations. Two characters (zygomatic breadth and interorbital width) are enough for the 96.5% correct\\u000a classification. The male skull ofM. lutreola is characterised by a relatively

  6. Home ranges of European mink Mustela lutreola in southwestern Europe

    Microsoft Academic Search

    Inazio Garin; Inigo Zuberogoitia; Jabi Zabala; Joxerra Aihartza; Anthony P. Clevenger; Ana Rallo

    2002-01-01

    We radiotracked 7 European minkMustela lutreola Linnaeus, 1761 (5 males and 2 females), to determine their distribution, size and temporal changes of their home range in\\u000a an area of southwestern Europe, where American minkM. vison was not established. Size of home ranges varied from 11 to 17 km along watercourses in males and were 0.6 and 3.6 km in females.

  7. Data for estimating eaten prey masses from Eurasian lynx Lynx Lynx scats in Central and East Europe

    Microsoft Academic Search

    Ferdinand Rühe; Thomas Burmester; Michael Ksinsik

    2007-01-01

    To derive a model which allows estimating eaten prey masses from lynxLynx lynx Linnaeus, 1758 scats, we fed 3 roe deerCapreolus capreolus, 2 wild boarsSus scrofa, 1 fallow deerDama dama, 1 mouflonOvis ammon musimon, 1 European hareLepus europaeus and 1 daily diet of miceMus musculus to two adult lynx. The percentage of prey use decreased with an increase in the

  8. Two models for assessing the prey mass of European ungulates from wolf scats

    Microsoft Academic Search

    Ferdinand Ruehe; Ina Buschmann; Almuth Wameling

    2003-01-01

    Among the prey of wolfCanis lupus Linnaeus, 1758, in many European regions, roe deerCapreolus capreolus, red deer Cervuselaphus and wild boarSus scrofa are of primary significance. Up to now, these species were not represented in models which allow an estimation of the consumed\\u000a biomass on the basis of wolf scats. To develop such formulae for roe deer, red deer and

  9. 18 Sharp-tailed Grouse

    Microsoft Academic Search

    Paul A. Johnsgard

    2008-01-01

    Tympanuchus phasianellus (Linnaeus) 1858 Other vernacular names: Brush grouse, pintail grouse, prairie grouse, prairie pheasant, sharptail, speckle-belly, spike-tail, spring-tail, whitebelly, white-breasted grouse. Range: Currently from north central Alaska, Yukon, northern Mackenzie, northern Manitoba, northern Ontario, and central Quebec south to eastern Washington, extreme eastern Oregon, Idaho, northeastern Utah, Wyoming, and Colorado, and in the Great Plains from eastern Colorado and

  10. Factors affecting daily ranges of red deer Cervus elaphus in Bia?owie?a Primeval Forest, Poland

    Microsoft Academic Search

    Jan F. Kamler; Bogumi?a J?drzejewska; W?odzimierz J?drzejewski

    2007-01-01

    Daily ranges of 19 (6 males, 13 females) adult red deerCervus elaphus Linnaeus, 1758 were studied using 24-h tracking sessions in Bia?owie?a Primeval Forest (BPF), Poland, from 2001 to 2004.\\u000a Overall, size of mean (± SE) daily ranges was larger for males (1.22 ± 0.10 km2) than females (1.00 ± 0.09 km2), although the difference was not significant. Similarly, mean

  11. Exoskeleton Morphology of Three Species of Preponini, with Discussion of Morphological Similarities among Neotropical Charaxinae (Lepidoptera: Nymphalidae)-II. Thorax and Thoracic Appendages.

    PubMed

    Bonfantti, Dayana; Casagrande, Mirna Martins; Mielke, Olaf Hermann Hendrik

    2015-06-01

    The present report, the second part of a study of the external morphology of Preponini, compares the thorax and thoracic appendages of Archaeoprepona demophon demophon (Linnaeus, 1758), Archaeoprepona licomedes licomedes (Cramer, 1777) and Prepona pylene pylene Hewitson, [1854], through descriptions and illustrations. The results are compared with three other species, Prepona claudina annetta (Gray, 1832), Memphis moruus stheno Hübner, [1819] and Zaretis itys itylus (Westwood, 1850), revealing previously unrecognized similarities among species of Charaxinae. PMID:26003985

  12. Reef coral reproduction in the eastern Pacific: Costa Rica, Panama, and Galapagos Islands (Ecuador)

    Microsoft Academic Search

    P. W. Glynn; N. J. Gassman; C. M. Eakin; J. Cortes; D. B. Smith; H. M. Guzman

    1991-01-01

    Reproductive ecology of two major reef-building corals in the eastern Pacific [Pocillopora damicornis (Linnaeus) andPocillopora elegans Dana] was investigated between 1984 and 1990 in Costa Rica, Panama (Gulf of Chiriqui and Gulf of Panama), and the Galapagos Islands (Ecuador) following the 1982–83 El Niño disturbance. Mature spermatocytes and oocytes were found in both species and were usually present in the

  13. Lack of metabolic temperature compensation in the intertidal gastropods, Littorina saxatilis (Olivi) and L. obtusata (L.)

    Microsoft Academic Search

    Robert F. McMahon; W. D. Russell-Hunter; David W. Aldridge

    1995-01-01

    Two intertidal snails, Littorina saxatilis (Olivi, 1972) (upper eulittoral fringe\\/maritime zone) and Littorina obtusata (Linnaeus, 1758) (lower eulittoral) were collected from a boulder shore on Nobska Point, Cape Cod, Massachusetts, in July\\u000a and acclimated for 15–20 days at 4 ° or 21 °C. Oxygen consumption rate (Vo2) was determined for 11–15 subsamples of individuals at 4 °, 11 ° and

  14. Behavioural and spatial adaptation of the Eurasian lynx to a decline in prey availability

    Microsoft Academic Search

    Krzysztof Schmidt

    2008-01-01

    The distribution and abundance of food resources is a major factor influencing animal populations. I studied the effect of\\u000a a roe and red deer population decline on diet composition, home range size and foraging pattern in the Eurasian lynxLynx lynx (Linnaeus, 1758) in the Bia?owie?a Primeval Forest (BPF), eastern Poland. The population of cervids in BPF experienced a\\u000a nearly two-fold

  15. Responses of echinoid larvae to food patches of different algal densities

    Microsoft Academic Search

    A. Metaxas; C. M. Young

    1998-01-01

    High densities of larvae have been found in areas of high primary production, but it remains unclear whether this is the\\u000a result of hydrodynamics or of larval aggregative behaviour in the presence of food. In this study, we examined changes in\\u000a the vertical distribution and swimming patterns of four-armed larvae of the sea-urchin Echinometra lucunter (Linnaeus) around food patches of

  16. A new species of Xorides Latreille (Hymenoptera, Ichneumonidae, Xoridinae) parasitizing Pterolophia alternata (Coleoptera, Cerambycidae) in  Robinia pseudoacacia.

    PubMed

    Sheng, Mao-Ling; Zhao, Rui-Xing; Sun, Shu-Ping

    2012-01-01

    A new species is described, Xorides benxicus Sheng, sp. n., reared from the cerambycid twig-boring pest of Robinia pseudoacacia Linnaeus, Pterolophia alternata Gressitt, 1938, in Benxi County, Liaoning Province, China. A key is given to the species similar to Xorides benxicus Sheng, namely Xorides asiasius Sheng & Hilszcza?ski, 2009, Xorides cinnabarius Sheng & Hilszcza?ski, 2009 and Xorides sapporensis (Uchida, 1928). PMID:23275750

  17. Diatoms as food of larval sea lampreys in a small tributary of northern Lake Michigan

    USGS Publications Warehouse

    Manion, Patrick J.

    1967-01-01

    The food and food preferences of sea lamprey ammocoetes have not been investigated. The food of the larval American brook lamprey, Lampetra lamottei, in the Great Lakes region consisted mainly of diatoms and desmids according to Creaser and Hann. Schroll discussed the biology of feeding of ammocoetes of Lampetra planeri and Eudontomyzon danfordi in Europe. This report presents data on the availability and use of diatoms by sea lamprey, Petromyzon marinus Linnaeus, ammocoetes in a small tributary of northern Lake Michigan.

  18. Efficacy of neem extract against the blowfly and housefly

    Microsoft Academic Search

    Sirisuda Siriwattanarungsee; Kabkaew L. Sukontason; Jimmy K. Olson; Orawon Chailapakul; Kom Sukontason

    2008-01-01

    The blowfly, Chrysomya megacephala (Fabricius), and housefly, Musca domestica Linnaeus, are ubiquitous insects that have the potential to spread a variety of pathogens to humans and livestock. Pest management\\u000a techniques for populations of these flies are needed. Currently, bioinsecticides, particularly those derived from plant origin,\\u000a have been increasingly evaluated in controlling populations of medically important insects. In this study, an

  19. Estuarine and habitat-related differences in growth rates of young-of-the-year winter flounder ( Pseudopleuronectes americanus) and tautog ( Tautoga onitis) in three northeastern US estuaries

    Microsoft Academic Search

    B. A Phelan; R Goldberg; A. J Bejda; J Pereira; S Hagan; P Clark; A. L Studholme; A Calabrese; K. W Able

    2000-01-01

    Instantaneous growth rates of young-of-the-year winter flounder Pseudopleuronectes americanus (Walbaum) (12.0–60.4 mm standard length, SL) and tautog Tautoga onitis (Linnaeus) (21.4–73.8 mm total length, TL) from three estuarine systems in New Jersey (Great Bay–Little Egg Harbor and Navesink River) and Connecticut (Hammonasset River) were used in an attempt to assess the relative quality of selected nominal habitats. A series of

  20. Antiquity and paleoenvironment of the Tamaulipan Biotic Province of southern Texas: the zooarchaeological perspective 

    E-print Network

    Presley, Anna Lee

    2004-09-30

    of short trees, shrubs, and succulents such a cactus and yucca. These groupings are interspersed with small grassy sections (Judd 2002). The typical overstory includes mesquite, huisache, and Texas ebony. The understory is a thick combination... of plants including multiple smaller species of Acacia, prickly pear, Opuntia sp., and other cactus. Vegetation tends to be taller near sources of water with huisache and retama (Parkinsonia aculeata Linnaeus) in higher concentrations (Judd 2002...

  1. Fusaric acid induces apoptosis in saffron root-tip cells: roles of caspase-like activity, cytochrome c , and H 2 O 2

    Microsoft Academic Search

    Leili Samadi; Behrooz Shahsavan Behboodi

    2006-01-01

    Programmed cell death (PCD), now known as apoptosis, is accompanied by specific morphological features. In this study, fusaric acid, a fusarium mycotoxin, was used to examine cell death in saffron (Crocus sativus Linnaeus) roots, using several apoptosis assays. Our results show that moderate FA doses (50–100 ?M) induce apoptotic features while high FA doses (> 200 ?M) stimulate necrosis. The apoptotic-like features induced

  2. Parasites of juvenile pompano from Galveston Island, Texas and preliminary trials of four chemicals for ectoparasitic activity

    E-print Network

    Coombs, Dan William

    1974-01-01

    , much interest and activity have been generated toward the commercial rearing of the common pompano Trachinotus carolinus (Linnaeus) in Florida and other Gulf Coast states. Pompano are hardy fish which tolerate a wide range of environmental... chemicals for control of ectoparasites. LITERATURE REVIEW Scientific Knowledge Concerning the Biology and Ecology of Pompano The majority of information concerning the biology and ecology of the common pompano Trachinotus carolinus has been collected...

  3. Biogeographic Patterns, Predator Identity, and Chemical Signals Influence the Occurrence and Magnitude of Non-lethal Predator Effects

    E-print Network

    Large, Scott Isaac

    2011-10-21

    , 1758) and a suite of its predators, the native rock crab Cancer irroratus (Say, 1817), Jonah crab Cancer borealis (Stimpson, 1859), and the invasive green crab Carcinus maenas (Linnaeus, 1758). Nucella use chemical cues emanating from their most...) or Jonah crabs (Cancer borealis), which are sympatric predators but do not frequently encounter Nucella because these crabs are primarily subtidal. Predator diet did not affect Nucella responses to risk, although starved predator response...

  4. Fish population characteristics of flood prevention lakes

    E-print Network

    Farquhar, Bobby W

    1977-01-01

    of mosquitofish (Gambusj. a affinis) were also closely correlated with crappie variables. Adult bluegill and total adult sunfish parameters were highly correlated with physical parameters which are generally associated with water clarity. vi AC K N OWL E DG... anomalum Rafines ue) q ~G' d* (Rafinesque) ~G Linnaeus Dorosoma ce edianum Eth* t. , R '1 (Girar d) Fundulus olivaceus (dt Gambusia affinis (Baird and Girard) Ictalurus melas (Rafinesque7 1 t 1 t 1' (R f' q Ictalurus unctatus ~Rf ' ~q ~Lo ' ~11...

  5. New data on the morphology of Comephoronema oschmarini (Nematoda, Cystidicolidae), a little-known gastrointestinal parasite of Lota lota (Teleostei) in Palaearctic Eurasia

    Microsoft Academic Search

    František Moravec; Vladimíra Hanzelová; Daniel Gerdeaux

    2007-01-01

    The nematode Comephoronema oschmarini Trofimenko, 1974 (Cystidicolidae) was found in the stomach of the burbot Lota lota (Linnaeus) of Lake Geneva, Savoy, France, collected on 23 March 2000 [prevalence 60% (3\\/5); intensity of infection 2–66 (mean\\u000a 35)]. This material made it possible to study in detail the morphology of this so far little-known parasite, using both light\\u000a and scanning electron

  6. Biochemical correlates of dissolved mercury uptake by the oyster Ostrea edulis

    Microsoft Academic Search

    J. J. Wrench

    1978-01-01

    From previous work, the equilibrium concentration factor for dissolved mercury in the digestive gland of Ostrea edulis Linnaeus was found to be three to four times higher than that in the gills. In the present study, an analysis of soluble protein revealed values of 49.3±14.2 mg g wet tissue-1 for the digestive gland and 0.7 ±0.1 mg g wet tissue-1

  7. Filamentous Fungi Associated with Bivalve Mollusks from Polluted Biotopes of Ussuriiskii Bay, Sea of Japan

    Microsoft Academic Search

    L. V. Zvereva; M. A. Vysotskaya

    2005-01-01

    We have studied for the first time the taxonomic composition of filamentous fungi associated with the bivalve mollusks Crenomytilus grayanus (Bunker, 1853) and Modiolus modiolus (Linnaeus, 1758), collected in polluted biotopes of Ussuriiskii Bay (Peter the Great Bay, Sea of Japan). One hundred fifty-five\\u000a strains of higher fungi were isolated, and 35 species of filamentous fungi were identified. Out of

  8. Two species of Philometra (Nematoda: Philometridae) from sparid fishes (porgies) off Sicily, Italy, including Philometra obladae sp. n. from the body cavity of Oblada melanura (Sparidae)

    Microsoft Academic Search

    F. Moravec; G. Gaglio; A. Panebianco; S. Giannetto

    2008-01-01

    Two species of Philometra Costa, 1845 (Nematoda: Philometridae), were, for the first time, recorded from fishes of the family Sparidae (porgies) from\\u000a the Tyrrhenian Sea off Sicily, Italy: Philometra obladae sp. n. from the body cavity of the saddled seabream Oblada melanura (Linnaeus) and Philometra filiformis (Stossich, Boll Soc Adriat Sci Nat 17:121–136, 1896) from the gonads of the common

  9. Annual reproductive cycle, spatial distribution, abundance, and size structure of Oreaster reticulatus (Echinodermata: Asteroidea) in Bocas del Toro, Panama

    Microsoft Academic Search

    H. M. Guzman; C. A. Guevara

    2002-01-01

    The structure, distribution, and population abundance of Oreaster reticulatus (Linnaeus, 1758) in 47,157 ha of shallow-water habitat in the archipelago of Bocas del Toro, Panama, were assessed from May to October 2000. The reproductive cycle of the sea star was studied in Isla Solarte, from February 2000 to February 2001. In total, 4,818 sea stars were recorded with a mean

  10. Nomenclature and classification

    Microsoft Academic Search

    Emerson Ricardo Pansarin; Ludmila Mickeliunas Pansarin

    \\u000a Plant species, as well as animal and fungi, have a Latin name, which follows the binomial system of Linnaeus (Carl von Linné,\\u000a 1707–1778). The first name refers to the genus (e.g. Cleistes, Bulbophyllum, Constantia and Cattleya). The second name is the specific epithet (e.g. montana, punctatum, cipoensis and loddigesii). The Latin names can be assigned, for example, according to the

  11. Annual re-sightings of photographically identified white sharks ( Carcharodon carcharias) at an eastern Pacific aggregation site (Guadalupe Island, Mexico)

    Microsoft Academic Search

    Michael L. Domeier; Nicole Nasby-Lucas

    2007-01-01

    A systematic, reliable method for identifying white sharks, Carcharodon carcharias Linnaeus, from underwater photographs was developed and applied to examine site fidelity at Guadalupe Island, Mexico (29?N,\\u000a 118?W). The most reliable features for repeat identification in multiple years were the pigment patterns on the gill flaps,\\u000a pelvic fins, and caudal fins. Pigment patterns in all three regions were asymmetrical on

  12. Flight destinations and foraging behaviour of northern gannets ( Sula bassana) preying on a small forage fish in a low-Arctic ecosystem

    Microsoft Academic Search

    Stefan Garthe; William A. Montevecchi; Gail K. Davoren

    2007-01-01

    We applied data loggers (temperature-depth and GPS-temperature-depth) on individual birds in combination with dietary sampling and a vessel survey of prey availability to assess the foraging behaviour of northern gannets (Sula bassana, Linnaeus 1758) in a low-Arctic ecosystem in the NW Atlantic. We demonstrate that the gannets foraged almost exclusively on inshore and coastal aggregations of capelin. There was a

  13. Flight destinations and foraging behaviour of northern gannets (Sula bassana) preying on a small forage fish in a low-Arctic ecosystem

    Microsoft Academic Search

    Stefan Garthe; William A. Montevecchi; Gail K. Davoren

    2007-01-01

    We applied data loggers (temperature-depth and GPS-temperature-depth) on individual birds in combination with dietary sampling and a vessel survey of prey availability to assess the foraging behaviour of northern gannets (Sula bassana, Linnaeus 1758) in a low-Arctic ecosystem in the NW Atlantic. We demonstrate that the gannets foraged almost exclusively on inshore and coastal aggregations of capelin. There was a

  14. A new species of Xorides Latreille (Hymenoptera, Ichneumonidae, Xoridinae) parasitizing Pterolophia alternata (Coleoptera, Cerambycidae) in  Robinia pseudoacacia

    PubMed Central

    Sheng, Mao-Ling; Zhao, Rui-Xing; Sun, Shu-Ping

    2012-01-01

    Abstract A new species is described, Xorides benxicus Sheng, sp. n., reared from the cerambycid twig-boring pest of Robinia pseudoacacia Linnaeus, Pterolophia alternata Gressitt, 1938, in Benxi County, Liaoning Province, China. A key is given to the species similar to Xorides benxicus Sheng, namely Xorides asiasius Sheng & Hilszcza?ski, 2009, Xorides cinnabarius Sheng & Hilszcza?ski, 2009 and Xorides sapporensis (Uchida, 1928). PMID:23275750

  15. New and revised maimetshid wasps from Cretaceous ambers (Hymenoptera, Maimetshidae)

    E-print Network

    Perrichot, Vincent; Ortega-Blanco, Jaime; McKellar, Ryan C.; Delclos, Xavier; Azar, Dany; Nel, André Tafforeau, Paul; Engel, Michael S.

    2011-09-24

    , and most legs. Other specimens are incomplete and fossilized in rather opaque am- ber, partly covered by small bubbles or foggy material, so that some parts are hidden or poorly visible. Lebanese amber. The material originates from an outcrop near.... systematic paleontology Order Hymenoptera Linnaeus, 1758 Family Maimetshidae Rasnitsyn, 1975 http://species-id.net/wiki/Maimetshidae Maimetshidae Rasnitsyn, 1975: 73. Type genus: Maimetsha Rasnitsyn, 1975. Rasnit- syn 1988: 124; Ronquist et al. 1999: 33...

  16. LESIONS INDUCED BY 2,4-D AND CHLORPYRIFOS IN TENCH (TINCA TINCA L.): IMPLICATION IN TOXICITY STUDIES

    Microsoft Academic Search

    L. Gómez; E. Durán; A. Gázquez; S. Martínez; J. Masot; V. Roncero

    2002-01-01

    This study was undertaken to demonstrate the toxicity of two pesticides, chlorpyrifos (O,O-diethyl O-3,5,6-trichloro-2-pyridyl phosphorothioate) and 2,4-D (Dichlorophenoxyacetic acid) to tench (Tinca tinca Linnaeus). Pathological samples of damaged tench kidney showing lesions were taken for statistical analysis in order to quantify different parameters. Analysis revealed differences in the action and\\/or action time of the two pesticides. These differences were more

  17. Vigilance in badgers Meles meles : the effects of group size and human persecution

    Microsoft Academic Search

    Frank A. M. Tuyttens; Nick Stapley; Paul D. Stewart; David W. Macdonald

    2001-01-01

    Potential costs to badgersMeles meles (Linnaeus, 1758) of living in groups may be offset by the ability of a group to either improve predator detection, or reduce\\u000a the time each individual must be vigilant to attain a certain likelihood of predator detection. Using an infra-red video-surveillance\\u000a system, we show that badgers emerge later from their dens in a population that

  18. John Clayton Herbarium

    NSDL National Science Digital Library

    One of the early collectors of plant specimens, John Clayton (1694-1773), has gained historical fame through his specimens, which were studied in Europe by the Swedish biologist Carolus Linnaeus. The Natural History Museum (London) hosts the John Clayton Herbarium homepage, providing historical information on John Clayton, a searchable database of Clayton's specimens (shown as JPEG images), a concise bibliography, and links to other historical botanical collections.

  19. Mites of the genus Schizocarpus Trouessart, 1896 (Acariformes: Chirodiscidae) from the North American beavers (Castor canadensis) in Russia.

    PubMed

    Bochkov, A V; Saveljev, A P

    2014-01-01

    Four native species of parasitic mites belonging to the genus Schizocarpus Trouessart, 1896 (Acariformes: Chirodiscidae) are recorded on the North American beaver Castor canadensis Kuhl, 1820 (Rodentia: Castoridae) from Russia. Totally ten beavers from all three main geographically isolated populations of in Russia (Leningrad Province, Voronezh Biosphere Reserve (beaver farm) and Khabarovsk Territory) were examined. Additionally, in captivity (Voronezh beaver farm) eight species were recorded switched from the Eurasian beaver Castor fiber Linnaeus, 1758 on C. canadensis. PMID:25936168

  20. An intelligent geographic information system approach to the evaluation of the effect of the endangered species protection program on mosquito control

    E-print Network

    Spradling, Sharon Lynn

    1990-01-01

    in Texas was reported in Dallas in 1985 (Tx. Dept. of Health 1987). Because Aedes aegypti (Linnaeus) is still very prevalent in Texas, yellow fever is also still a potential threat. In addition, Aedes aegypti can vector dengue, an acute febrile disease... to South Carolina, but is not currently found anywhere in the United States. Organized mosquito control is the principal reason for the lack of recent outbreaks of malaria, yellow fever, dengue, and filariasis in the U. S. St. Louis, western equine...