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Sample records for shrimps pandalus borealis

  1. PHYSICAL AND CHEMICAL CHANGES OF PINK SHRIMP, PANDALUS BOREALIS, HELD IN CARBON DIOXIDE MODIFIED REFRIGERATED

    E-print Network

    PHYSICAL AND CHEMICAL CHANGES OF PINK SHRIMP, PANDALUS BOREALIS, HELD IN CARBON DIOXIDE MODIFIED ahrimp,PandaluB borealis, were held in carbon dioxide modified refrigerated seawater for 12.5 days and in ice for 11.5 days. Chemical tests for spoilage indicated that shrimp held in carbon dioxide modified

  2. Characterization of Shrimp Oil from Pandalus borealis by High Performance Liquid Chromatography and High Resolution Mass Spectrometry

    PubMed Central

    Jiao, Guangling; Hui, Joseph P. M.; Burton, Ian W.; Thibault, Marie-Hélène; Pelletier, Claude; Boudreau, Josée; Tchoukanova, Nadia; Subramanian, Balaji; Djaoued, Yahia; Ewart, Stephen; Gagnon, Jacques; Ewart, Kathryn Vanya; Zhang, Junzeng

    2015-01-01

    Northern shrimp (Pandalus borealis) oil, which is rich in omega-3 fatty acids, was recovered from the cooking water of shrimp processing facilities. The oil contains significant amounts of omega-3 fatty acids in triglyceride form, along with substantial long-chain monounsaturated fatty acids (MUFAs). It also features natural isomeric forms of astaxanthin, a nutritional carotenoid, which gives the oil a brilliant red color. As part of our efforts in developing value added products from waste streams of the seafood processing industry, we present in this paper a comprehensive characterization of the triacylglycerols (TAGs) and astaxanthin esters that predominate in the shrimp oil by using HPLC-HRMS and MS/MS, as well as 13C-NMR. This approach, in combination with FAME analysis, offers direct characterization of fatty acid molecules in their intact forms, including the distribution of regioisomers in TAGs. The information is important for the standardization and quality control, as well as for differentiation of composition features of shrimp oil, which could be sold as an ingredient in health supplements and functional foods. PMID:26096274

  3. Population structure of the deep-sea shrimp (Pandalus borealis) in the north-east Atlantic based on allozyme variation

    E-print Network

    Vincent, Warwick F.

    and Iceland, and in fjords along the Norwegian coast. Only three enzymes (malate dehydrogenase. borealis in the Barents Sea. Genetic differentiation was found, however, between Norwegian fjords and the Barents Sea, and among fjords. © 2000 Ifremer/Cnrs/Inra/Ird/Cemagref/Éditions scientifiques et médicales

  4. [Quality changes in iced shrimps (Pandalus borealis). II Changes in the contents of trimethylamine oxide and volatile nitrogen bases during automatic boiling and peeling (author's transl)].

    PubMed

    Solberg, T; Nesbakken, T

    1981-01-01

    Post mortem trimethylamine oxide (TMAO) in marine animals is reduced to trimethylamine (TMA), and the degradation of proteins causes an increase in the ammonia (NH3) content. During ice-storage NH3 and TMA usually make up the major part of the total content of volatile nitrogen bases (TVN) which are formed during the degradation process. The formation of TMA and NH3 is probably caused mainly by bacterial enzymes. The contents of TMA and TVN in marine fish and shrimps are important objective criteria in supporting organoleptic examinations of such raw materials. During automatic boiling, peeling and rinsing processes in shrimp factories, some of these water-soluble and volatile compounds will be extracted by the boiling water and possibly evaporated. In this investigation we have attempted to estimate the loss of TMAO, TMA and TVN in shrimp muscle during this automatic processing. The investigation includes experiments in the laboratory (Table I, Figure 1) and in two factories (Table II-III, Figure 2-3). The results show that about 50% of the contents of TMAO-N, TMA-N and TVN probably will be lost from the shrimps during automatic processing. Adding approximately 100% TMA-N and TVN to the analysed contents in boiled, peeled and rinsed shrimps will therefore probably give the same level of these compounds as that found in the raw shrimps used. An accurate measurement of the TMA- and TVN-content in shrimp produced under known condition in North-Norwegian shrimps factories could give an objective indication of the quality of the raw shrimps used. In accordance with Norwegian shrimp regulations, only the fresh, healthy shrimps are allowed to be produced. PMID:7322865

  5. Introduction The Pacific ocean shrimp, Pandalus

    E-print Network

    , MICHELLE C. HORECZKO, MICHAEL W. PRALL, TOM J. MASON, BRIAN C. OWENS, and STEPHEN P. WERTZ Adam J. Frimodig, Eureka, CA 95501. Michelle C. Horeczko, Tom J. Mason, Brian C. Owens, and Stephen P. Wertz on the pink shrimp fishery, including cruise surveys, development of population models, and a dockside

  6. Recruitment of the ocean shrimp, Pandalus jordani, to the fishery in

    E-print Network

    482 Recruitment of the ocean shrimp, Pandalus jordani, to the fishery in waters off Oregon has been, is strongly negatively correlated with recruit- ment of age-1 shrimp to the fishery the following year (Hannah shrimp larvae inhabit the near- surface waters shortly after release, occupying progressively deeper

  7. Definition and characterization of data needs to describe the potential effects of increased atmospheric CO2 on marine fisheries from the northeast Pacific Ocean. [Theragra chalcogramma; Clupea harengus pallasi; Pandalus borealis; Limanda aspera

    SciTech Connect

    Strickland, R.M.; Grosse, D.J.; Stubin, A.I.; Ostrander, G.K.; Sibley, T.H.

    1985-12-01

    Four northeast Pacific region case study species were studied to determine individual fishery responses to climate change. These fishes (Alaska pollock, Theragra chalcogramma; Pacific herring, Clupea harengus pallasi; pink shrimp, Pandalus borealis; and yellowfin sole, Limanda aspera) represent a spectrum of habitats and life cycles among commercially important species, and the northeast Pacific (including the eastern Bering Sea) is relatively well-studied and representative of subpolar continental shelf areas that also are important in the North Atlantic. In addition to the general effects of climate, these fisheries have specific climate-related environmental sensitivities: (a) pollock sensitivity to ice extent, cannibalism, and bird and mammal predation in the Bering Sea, and to coastal currents in the Gulf of Alaska; (b) sensitivity of herring to waves, dessication, and probably currents in the immediate vicinity of discrete spawning beaches along the British Columbia coast; (c) the relative insensitivity of bottom-dwelling shrimp to temperature changes; and (d) the probable sensitivity of yellowfin sole to ice extent and to associated changes in food supply caused by alterations in plankton species composition. It is difficult to extrapolate from the results of the present case studies to other fisheries. These results are particularly inapplicable to other major categories of fisheries, including open-ocean, upwelling, and tropical and subtropical shelf fisheries. Such fisheries should be the focus of additional case studies. Possible temperature effects on the incidence of disease and parasitism in fish also should be investigated.

  8. DIET OF PACIFIC COD, GADUS MACROCEPHALUS, AND PREDATION ON THE NORTHERN PINK SHRIMp,

    E-print Network

    DIET OF PACIFIC COD, GADUS MACROCEPHALUS, AND PREDATION ON THE NORTHERN PINK SHRIMp, PANDALUS BOREALIS, IN PAVLOF BAY, ALASKA W. D. ALBERS AND P. J. ANDERSON! ABSTRACf Analysis of 455 Pacific cod more frequently with increasing cod size (30-69 cm fork length). Euphausids decreased in frequency

  9. An investigation into mechanical strength of exoskeleton of hydrothermal vent shrimp (Rimicaris exoculata) and shallow water shrimp (Pandalus platyceros) at elevated temperatures.

    PubMed

    Verma, Devendra; Tomar, Vikas

    2015-04-01

    This investigation reports a comparison of the exoskeleton mechanical strength of deep sea shrimp species Rimicaris exoculata and shallow water shrimp species Pandalus platyceros at temperatures ranging from 25°C to 80°C using nanoindentation experiments. Scanning Electron Microscopy (SEM) observations suggest that both shrimp exoskeletons have the Bouligand structure. Differences in the structural arrangement and chemical composition of both shrimps are highlighted by SEM and EDX (Energy Dispersive X-ray) analyses. The variation in the elastic moduli with temperature is found to be correlated with the measured compositional differences. The reduced modulus of R. exoculata is 8.26±0.89GPa at 25°C that reduces to 7.61±0.65GPa at 80°C. The corresponding decrease in the reduced modulus of P. platyceros is from 27.38±2.3GPa at 25°C to 24.58±1.71GPa at 80°C. The decrease in reduced moduli as a function of temperature is found to be dependent on the extent of calcium based minerals in exoskeleton of both types of shrimp exoskeletons. PMID:25686945

  10. Ca uses o f seaso nal flu c tu atio ns a nd abu n-da nce in shrimp po pul atio ns in the estuaries

    E-print Network

    abunda nce of species of no rthe rn shrimp. parti cularly Pandalus borealis, and li fe histo ry pigments and released in nurse r\\' areas tributary to Core Sound and Lower Cape Fear Ri ve r estuaries the feasdlillt\\ mO\\ ement... 01 Pacific p l n~ ;hrimp. ano I

  11. Expression Profiling without Genome Sequence Information in a Non-Model Species, Pandalid Shrimp (Pandalus latirostris), by Next-Generation Sequencing

    PubMed Central

    Kawahara-Miki, Ryouka; Wada, Kenta; Azuma, Noriko; Chiba, Susumu

    2011-01-01

    While the study of phenotypic variation is a central theme in evolutionary biology, the genetic approaches available to understanding this variation are usually limited because of a lack of genomic information in non-model organisms. This study explored the utility of next-generation sequencing (NGS) technologies for studying phenotypic variations between 2 populations of a non-model species, the Hokkai shrimp (Pandalus latirostris; Decapoda, Pandalidae). Before we performed transcriptome analyses using NGS, we examined the genetic and phenotypic differentiation between the populations. Analyses using microsatellite DNA markers suggested that these populations genetically differed from one another and that gene flow is restricted between them. Moreover, the results of our 4-year field observations indicated that the egg traits varied genetically between the populations. Using mRNA extracted from the ovaries of 5 females in each population of Hokkai shrimp, we then performed a transcriptome analysis of the 2 populations. A total of 13.66 gigabases (Gb) of 75-bp reads was obtained. Further, 58,804 and 33,548 contigs for the first and second population, respectively, and 47,467 contigs for both populations were produced by de novo assembly. We detected 552 sequences with the former approach and 702 sequences with the later one; both sets of sequences showed greater than twofold differences in the expression levels between the 2 populations. Twenty-nine sequences were found in both approaches and were considered to be differentially expressed genes. Among them, 9 sequences showed significant similarity to functional genes. The present study showed a de novo assembly approach for the transcriptome of a non-model species using only short-read sequence data, and provides a strategy for identifying sequences showing significantly different expression levels between populations. PMID:22016807

  12. Ovarian development and hemolymph vitellogenin levels in laboratory-maintained protandric shrimp, Pandalus hypsinotus: measurement by a newly developed time-resolved fluoroimmunoassay (TR-FIA).

    PubMed

    Okumura, Takuji; Yoshida, Kazunori; Nikaido, Hideki

    2004-10-01

    Most pandalid shrimps exhibit protandric hermaphroditism, and detailed information on ovarian development of pandalid species is important for a better understanding of vitellogenesis in crustacean species. In the present study, we characterized ovarian development under light and electron microscopy and examined the hemolymph vitellogenin levels in the coonstriped shrimp, Pandalus hypsinotus under laboratory conditions. To measure vitellogenin levels, a time-resolved fluoroimmunoassay (TR-FIA) was developed after purification of vitellin and production of the anti-vitellin antiserum. The TR-FIA showed wide assay range (0.98-2000 ng/ml), high sensitivity (0.5 ng/ml), and low assay variability (0.9-6.4% of intraassay coefficients, 1.4-5.1% for interassay coefficients). Female P. hypsinotus had non-vitellogenic ovaries in March after the eggs attached to the abdomen hatched, and started yolk accumulation in the ovaries during April-October. During yolk accumulation, yolk globules appeared and increased in the ooplasm. After yolk accumulation, gonadosomatic index (GSI) reached 8.3-8.5 just before oviposition. Females spawned and were ovigerous during June-July of the next year. Hemolymph vitellogenin levels were low (0.006+/-0.008 mg/ml, mean+/-SD) before the yolk accumulation, and became significantly higher (2.66 +/-0.93 mg/ml) during yolk accumulation (GSI, 2-8). Just before oviposition, levels declined to low levels (0.040+/-0.012 mg/ml). Vitellogenin levels were significantly correlated to GSI during the yolk accumulation. The obtained results show that the process of vitellogenesis during the female phase of P. hypsinotus is similar to other crustacean species that do not change sex. PMID:15514473

  13. Corona Borealis

    NASA Astrophysics Data System (ADS)

    Murdin, P.

    2000-11-01

    (the Northern Crown; abbrev. CrB, gen. Coronae Borealis; area 179 sq. deg.) A northern constellation which lies between Boötes and Hercules, and culminates at midnight in mid-May. It represents the crown that in Greek mythology was made by Hephaestus, god of fire, and worn by Princess Ariadne of Crete. Its brightest stars were cataloged by Ptolemy (c. AD 100-175) in the Almagest....

  14. December 2011 SEI WHALE (Balaenoptera borealis borealis)

    E-print Network

    December 2011 SEI WHALE (Balaenoptera borealis borealis): Nova Scotia Stock STOCK DEFINITION Atlantic sei whales, and suggested two stocks--a Nova Scotia stock and a Labrador Sea stock. The range northeastward to south of Newfoundland. The Scientific Committee of the International Whaling Committee (IWC

  15. November 2010 SEI WHALE (Balaenoptera borealis borealis)

    E-print Network

    36 November 2010 SEI WHALE (Balaenoptera borealis borealis): Nova Scotia Stock STOCK DEFINITION Atlantic sei whales, and suggested two stocks--a Nova Scotia stock and a Labrador Sea stock. The range northeastward to south of Newfoundland. The Scientific Committee of the International Whaling Committee (IWC

  16. Spatial distribution of extractable organohalogens in northern pink shrimp in the north Atlantic.

    PubMed

    Bottaro, C S; Kiceniuk, J W; Chatt, A

    1999-01-01

    Extractable organohalogens (EOX) are organic compounds that contain chlorine, bromine and/or iodine, which can be separated from the matrix by liquid/liquid or liquid/solid extraction. A combination of instrumental neutron activation analysis (INAA) and solvent extraction methods has been developed for the determination of EOX from the shrimp Pandalus borealis. Levels of EOX were evaluated for spatial trends for shrimp caught in several areas off the Labrador coast, off the coast of Nova Scotia, and off the coast of Maine. Muscle contained 1.09-6.05 micrograms EOCl/g tissue and 105-498 micrograms extractable organochlorine (EOCl)/g lipid; 0.0607-0.288 microgram extractable organobromine (EOB)r/g tissue and 4.74-10.5 micrograms EOBr/g lipid; and 0.014-0.048 microgram extractable organoiodine (EOI)/g tissue and 1.03-1.76 micrograms EOI/g lipid, respectively. The levels of EOCl in roe were 1.60-12.34 micrograms/g tissue and 39.0-146 micrograms/g lipid. In roe, the EOBr levels were 0.707-1.03 micrograms/g tissue and 6.96-13.5 micrograms/g lipid; and EOI levels were 0.123-0.349 microgram/g tissue and 1.42-4.11 micrograms/g lipid. The EOCl, EOBr, and EOI levels in roe increased noticeably from north to south along the coast of Labrador. Samples taken from the coast of Maine and from Canso Hole were typically higher in EOCl levels than those taken from Labrador. The results for EOBr and EOI were in the same range as those from Labrador. PMID:10676489

  17. SEI WHALE (Balaenoptera borealis borealis): Nova Scotia Stock

    E-print Network

    46 May 2015 SEI WHALE (Balaenoptera borealis borealis): Nova Scotia Stock STOCK DEFINITION Atlantic sei whales, and suggested two stocks--a Nova Scotia stock and a Labrador Sea stock. The range of the Nova Scotia stock includes the continental shelf waters of the northeastern U.S., and extends

  18. SEI WHALE (Balaenoptera borealis borealis): Nova Scotia Stock

    E-print Network

    April 2014 SEI WHALE (Balaenoptera borealis borealis): Nova Scotia Stock STOCK DEFINITION Atlantic sei whales, and suggested two stocks--a Nova Scotia stock and a Labrador Sea stock. The range of the Nova Scotia stock includes the continental shelf waters of the northeastern U.S., and extends

  19. SEI WHALE (Balaenoptera borealis borealis): Nova Scotia Stock

    E-print Network

    14 May 2013 SEI WHALE (Balaenoptera borealis borealis): Nova Scotia Stock STOCK DEFINITION Atlantic sei whales, and suggested two stocks--a Nova Scotia stock and a Labrador Sea stock. The range of the Nova Scotia stock includes the continental shelf waters of the northeastern U.S., and extends

  20. The Sei Whale, Balaenoptera borealis

    E-print Network

    The Sei Whale, Balaenoptera borealis SALLY A. MIZROCH, DALE W. RICE, and JEFFREY M. BREIWICK Introduction The sei whale, Balaenoptera borealis Lesson, 1828, can range in length up to 18.5 m (60 feet), which makes it the third largest whale in the family Balaenopteridae, following the blue, B. musculus

  1. Validation of the name Wolffia borealis (Lemnaceae)

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Problems with the valid publication of the species name Wolffia borealis, thought to have been published in 1977 for a duckweed from the United States and Canada, are discussed. The varietal name upon which W. borealis was presumably based, “W. brasiliensis var. borealis Engelm.”, did not exist in ...

  2. LIFE HISTORY CHARACTERISTICS OF PANDALUS MONTAGUI AND DICHELOPANDALUS LEPTOCERUS

    E-print Network

    to the State Planning Office, Oct. 1, 1978-Sept. 30, 1979, Maine Depart- ment of Marine Resources, Augusta, MAINE DAVID K. STEVENSONl AND FRAN PIERCE" ABSTRACT A number of life history characteristics of two leptocerus) are common in offshore waters of the Gulf of Maine (Wigley 1960). Of these, P. borealis

  3. UV DAMAGE AND PHOTOREACTIVATION POTENTIALS OF LARVAL SHRIMP, 'PANDALUS PLATYCEROS', AND ADULT EUPHAUSIIDS, 'THYSANOESSA RASCHII'

    EPA Science Inventory

    Previously reported thresholds for UV-B dose and dose-rate were determined under artificial light regimes using more than an order of magnitude less visible light than round naturally. Near-UV and/or visible light is needed for photoreactivation and the accuracy of earlier findin...

  4. Distributed Operation in the Borealis Stream Processing Engine

    E-print Network

    ]. The Borealis design is driven by our experience in using Aurora and Medusa, in developing several stream- ingDistributed Operation in the Borealis Stream Processing Engine Yanif Ahmad yna, Providence, RI. Brandeis University, Waltham, MA. ABSTRACT Borealis is a distributed stream processing

  5. Operator Allocation in Borealis with Integrated Sensor Network Query Processors

    E-print Network

    Lindner, Wolfgang

    Aurora [1]. For the examples in this paper the following subset ( = {F, M, U, A}) of Borealis operatorsOperator Allocation in Borealis with Integrated Sensor Network Query Processors Wolfgang Lindner heuristics are introduced. Finally, it is shown how the op- erator allocation process fits into the Borealis

  6. October 1999 SEI WHALE (Balaenoptera borealis)

    E-print Network

    28 October 1999 SEI WHALE (Balaenoptera borealis): Nova Scotia Stock STOCK DEFINITION AND GEOGRAPHIC RANGE Indications are that, at least during the feeding season, a major portion of the sei whale in the area of Hydrographer Canyon (CETAP 1982). The sei whale is generally found in the deeper waters

  7. January 2002 SEI WHALE (Balaenoptera borealis)

    E-print Network

    33 January 2002 SEI WHALE (Balaenoptera borealis): Nova Scotia Stock STOCK DEFINITION AND GEOGRAPHIC RANGE Indications are that, at least during the feeding season, a major portion of the sei whale (CETAP 1982). NMFS aerial surveys in 1999, 2000 and 2001 found concentrations of sei and right whales

  8. December 2005 SEI WHALE (Balaenoptera borealis)

    E-print Network

    28 December 2005 SEI WHALE (Balaenoptera borealis): Nova Scotia Stock STOCK DEFINITION Atlantic sei whale population is centered in northerly waters, perhaps on the Scotian Shelf (Mitchell concentrations of sei and right whales along the Northern Edge of Georges Bank in the spring. The sei whale

  9. December 2003 SEI WHALE (Balaenoptera borealis)

    E-print Network

    28 December 2003 SEI WHALE (Balaenoptera borealis): Nova Scotia Stock STOCK DEFINITION Atlantic sei whale population is centered in northerly waters, perhaps on the Scotian Shelf (Mitchell (CETAP 1982). NMFS aerial surveys in 1999, 2000 and 2001 found concentrations of sei and right whales

  10. December 2009 SEI WHALE (Balaenoptera borealis)

    E-print Network

    December 2009 SEI WHALE (Balaenoptera borealis): Nova Scotia Stock STOCK DEFINITION AND GEOGRAPHIC sei whales, and suggested two stocks - a Nova Scotia stock and a Labrador Sea stock. The range northeastward to south of Newfoundland. The Scientific Committee of the International Whaling Commission (IWC

  11. October 2007 SEI WHALE (Balaenoptera borealis)

    E-print Network

    33 October 2007 SEI WHALE (Balaenoptera borealis): Nova Scotia Stock STOCK DEFINITION Atlantic sei whales, and suggested two stocks - a Nova Scotia stock and a Labrador Sea stock. The range boundaries, noted that the stock identity of sei whales (and indeed all North Atlantic whales) was a major

  12. September 2000 SEI WHALE (Balaenoptera borealis)

    E-print Network

    29 September 2000 SEI WHALE (Balaenoptera borealis): Nova Scotia Stock STOCK DEFINITION AND GEOGRAPHIC RANGE Indications are that, at least during the feeding season, a major portion of the sei whale (CETAP 1982). The sei whale is generally found in the deeper waters characteristic of the continental

  13. October 2008 SEI WHALE (Balaenoptera borealis)

    E-print Network

    36 October 2008 SEI WHALE (Balaenoptera borealis): Nova Scotia Stock STOCK DEFINITION Atlantic sei whales, and suggested two stocks - a Nova Scotia stock and a Labrador Sea stock. The range boundaries, noted that the stock identity of sei whales (and indeed all North Atlantic whales) was a major

  14. December 1998 SEI WHALE (Balaenoptera borealis)

    E-print Network

    31 December 1998 SEI WHALE (Balaenoptera borealis): Western North Atlantic Stock STOCK DEFINITION AND GEOGRAPHIC RANGE Indications are that, at least during the feeding season, a major portion of the sei whale (CETAP 1982). The sei whale is generally found in the deeper waters characteristic of the continental

  15. Exxon Valdez oil spill. State/federal natural resource damage assessment. Injury to Prince William Sound spot shrimp. Subtidal study number 5. Final report

    SciTech Connect

    1992-12-01

    Since the grounding of the T/V Exxon Valdez caused an oil spill on March 24, 1989, four surveys have been conducted by the Alaska Department of Fish and Game (ADF&G) to assess possible damage done by the oil spill to spot shrimp Pandalus platyceros. The surveys were conducted November 1989, March 1990, and November 1990 as Fish/Shellfish Study 15, then November 1991 as Subtidal Study 5. The report incorporates results of all surveys, but emphasizes November surveys and their analysis.

  16. Fluorine in R Coronae Borealis Stars

    E-print Network

    Gajendra Pandey; David L. Lambert; N. Kameswara Rao

    2007-11-15

    Neutral fluorine (F I) lines are identified in the optical spectra of several R Coronae Borealis stars (RCBs) at maximum light. These lines provide the first measurement of the fluorine abundance in these stars. Fluorine is enriched in some RCBs by factors of 800 to 8000 relative to its likely initial abundance. The overabundances of fluorine are evidence for the synthesis of fluorine. These results are discussed in the light of the scenario that RCBs are formed by accretion of an He white dwarf by a C-O white dwarf. Sakurai's object (V4334 Sgr), a final He-shell flash product, shows no detectable F I lines.

  17. Diapause traits in Melanoplus sanguinipes and M. borealis (Orthoptera: Acrididae)

    Technology Transfer Automated Retrieval System (TEKTRAN)

    A thorough understanding of diapause is needed for prediction of population responses to climate change, for realistic simulation models, and for the development of effective pest management. In Melanoplus sanguinipes (Fabricius) and M. borealis (Fieber) (Orthoptera: Acrididae), diapause typically o...

  18. SHRIMPS (ARTHROPODA: CRUSTACEA: PENAEIDAE)

    EPA Science Inventory

    The pollution ecology of penaeid shrimps involving industrial organic chemicals, pesticides, petroleum, heavy metals, biological agents, and interactions of the above is discussed. Penaeid shrimps, within their geographic distribution, can serve as valid indicators of the presenc...

  19. Chromatographic, NMR and vibrational spectroscopic investigations of astaxanthin esters: application to "Astaxanthin-rich shrimp oil" obtained from processing of Nordic shrimps.

    PubMed

    Subramanian, B; Thibault, M-H; Djaoued, Y; Pelletier, C; Touaibia, M; Tchoukanova, N

    2015-11-01

    Astaxanthin (ASTX) is a keto carotenoid, which possesses a non-polar linear central conjugated chain and polar ?-ionone rings with ketone and hydroxyl groups at the extreme ends. It is well known as a super anti-oxidant, and recent clinical studies have established its nutritional benefits. Although it occurs in several forms, including free molecule, crystalline, aggregates and various geometrical isomers, in nature it exists primarily in the form of esters. Marine animals accumulate ASTX from primary sources such as algae. Nordic shrimps (P. borealis), which are harvested widely in the Atlantic Ocean, form a major source of astaxanthin esters. "Astaxanthin-rich shrimp oil" was developed as a novel product in a shrimp processing plant in Eastern Canada. A compositional analysis of the shrimp oil was performed, with a view to possibly use it as a nutraceutical product for humans and animals. Astaxanthin-rich shrimp oil contains 50% MUFAs and 22% PUFAs, of which 20% are omega-3. In addition, the shrimp oil contains interesting amounts of EPA and DHA, with 10%/w and 8%/w, respectively. Astaxanthin concentrations varied between 400 and 1000 ppm, depending on the harvesting season of the shrimp. Astaxanthin and its esters were isolated from the oil and analysed by NMR, FTIR and Micro-Raman spectroscopy. Astaxanthin mono- and diesters were synthesized and used as standards for the analysis of astaxanthin-rich shrimp oil. NMR and vibrational spectroscopy techniques were successfully used for the rapid characterization of monoesters and diesters of astaxanthin. Raman spectroscopy provided important intermolecular interactions present in the esterified forms of astaxanthin molecules. Also discussed in this paper is the use of NMR, FTIR and Micro-Raman spectroscopy for the detection of astaxanthin esters in shrimp oil. PMID:26393239

  20. The Design of the Borealis Stream Processing Engine Daniel J. Abadi1

    E-print Network

    , Brown University, and MIT. Borealis inherits core stream processing functionality from Aurora [14 in terms of our own design considera- tions for Borealis, the successor to Aurora, but it should PermissionThe Design of the Borealis Stream Processing Engine Daniel J. Abadi1 , Yanif Ahmad2 , Magdalena

  1. Load Management and High Availability in the Borealis Distributed Stream Processing Engine

    E-print Network

    Load Management and High Availability in the Borealis Distributed Stream Processing Engine Nesime of Computer Science, Providence, RI, USA {yna, ugur, jhhwang, yx, sbz}@cs.brown.edu Abstract. Borealis and high availability in Borealis. We describe our al- gorithms for balanced and resilient load

  2. Shrimp Farming in the Classroom.

    ERIC Educational Resources Information Center

    Ruggiero, Lovelle

    2000-01-01

    Describes a project on culturing shrimp. Presents observational labs and the experimentation procedure. Provides general information about shrimp, their life span, optimum temperatures, and other important information. (YDS)

  3. Discovering New R Coronae Borealis Stars

    NASA Astrophysics Data System (ADS)

    Clayton, Geoffrey C.; Tisserand, Patrick; Welch, Douglas L.; LeBleu, Amy

    2016-01-01

    The R Coronae Borealis (RCB) stars are rare hydrogen-deficient, carbon-rich supergiants. Two evolutionary scenarios have been suggested, a double degenerate merger of two white dwarfs, or a final helium shell flash in a PN central star. The evidence pointing toward a white-dwarf merger or a final-flash origin for RCB stars is contradictory. The distribution on the sky and radial velocities of the RCB stars tend toward those of the bulge population but a much larger sample of stars is needed to determine the true population. We need to discover RCB stars much more efficiently. In order to do this, we have used a series of IR color-color cuts, using the recent release of the WISE All-Sky Catalog, to produce a sample of 2200 candidates that may yield over 200 new RCB star identifications. Most of these candidates do not have lightcurves, the traditional technique of identifying RCB stars from their characteristic large and irregular light variations. We have obtained optical spectra of several hundred candidates and have confirmed over 40 new RCB stars in the Galaxy. We are attempting to develop a quantitative spectral classification system for the RCB stars so that they can be identified without an accompanying light curve. The cooler RCB stars look like carbon stars with strong C2 bands, but they can be differentiated from carbon stars by their extreme hydrogen deficiency and very low 13C/12C ratio. Also, the red CN bands are much weaker in RCB stars than in carbon stars. The number of RCB stars in the Galaxy may be consistent with the predicted number of He/CO white-dwarf mergers. Solving the mystery of how the RCB stars evolve would be a watershed event in the study of stellar evolution that will lead to a better understanding of other important types of stellar merger events such as Type Ia SNe.

  4. SEI WHALE (Balaenoptera borealis): Western North Atlantic Stock

    E-print Network

    23 July 1995 SEI WHALE (Balaenoptera borealis): Western North Atlantic Stock STOCK DEFINITION AND GEOGRAPHIC RANGE Indications are that, at least during the feeding season, the sei whale populationTAP 1982). The sei whale is generally found in the deeper waters characteristic of the continental shelf

  5. The Aurora and Borealis Stream Processing Ugur Cetintemel1

    E-print Network

    The Aurora and Borealis Stream Processing Engines Ugur C¸etintemel1 , Daniel Abadi2 , Yanif Ahmad1 on an SPE. The Aurora stream-processing engine, motivated by these three tenets, is currently operational-shedding algorithms are presented in [18], and our approach to high availability in a multi-site Aurora installation

  6. RCoronae Borealis at the 2003 light minimum

    NASA Astrophysics Data System (ADS)

    Kameswara Rao, N.; Lambert, David L.; Shetrone, Matthew D.

    2006-08-01

    A set of five high-resolution optical spectra of R CrB obtained in 2003 March is discussed. At the time of the first spectrum (March 8), the star was at V = 12.6, a decline of more than six magnitudes. By March 31, the date of the last observation, the star at V = 9.3 was on the recovery to maximum light (V = 6). The 2003 spectra are compared with the extensive collection of spectra from the 1995-1996 minimum presented previously. Spectroscopic features common to the two minima include the familiar ones also seen in spectra of other R Coronae Borealis stars (RCBs) in decline: sharp emission lines of neutral and singly ionized atoms, broad emission lines including HeI, [NII] 6583 Å, Na D and CaII H & K lines, and blueshifted absorption lines of Na D, and KI resonance lines. Prominent differences between the 2003 and 1995-1996 spectra are seen. The broad Na D and Ca H & K lines in 2003 and 1995-1996 are centred approximately on the mean stellar velocity. The 2003 profiles are fit by a single Gaussian, but in 1995-1996 two Gaussians separated by about 200 km s-1 were required. However, the HeI broad emission lines are fit by a single Gaussian at all times; the emitting He and Na-Ca atoms are probably not colocated. The C2 Phillips 2-0 lines were detected as sharp absorption lines and the C2 Swan band lines as sharp emission lines in 2003, but in 1995-1996 the Swan band emission lines were broad and the Phillips lines were undetected. The 2003 spectra show CI sharp emission lines at minimum light with a velocity changing in 5 d by about 20 km s-1 when the velocity of `metal' sharp lines is unchanged; the CI emission may arise from shock-heated gas. Reexamination of spectra obtained at maximum light in 1995 shows extended blue wings to strong lines with the extension dependent on a line's lower excitation potential; this is the signature of a stellar wind, also revealed by published observations of the HeI 10830 Å line at maximum light. Changes in the cores of the resonance lines of AlI and Na D (variable blueshifts) and the CaII infrared (IR) lines (variable blueshifts and redshifts) suggest complex flow patterns near the photosphere. The spectroscopic differences at the two mimima show the importance of continued scrutiny of the declines of R CrB (and other RCBs). Thorough understanding of the outer atmosphere and circumstellar regions of R CrB will require such continued scrutiny. Based on observations obtained with the Hobby-Eberly Telescope, which is a joint project of the University of Texas at Austin, the Pennsylvania State University, Stanford University, Ludwig-Maximilians-Universität München and Georg-August-Universität Göttingen. E-mail: dll@anchor.as.utexas.edu (DLL)

  7. The Newly Active R Coronae Borealis Star, V2552 Ophiuchi

    NASA Astrophysics Data System (ADS)

    Hesselbach, E.; Clayton, Geoffrey C.; Smith, Paul S.

    2003-11-01

    In 2001, V2552 Oph (CD -22°12017, Had V98) quickly faded by several magnitudes in a manner typical of the R Coronae Borealis (RCB) stars. Photometry of V2552 Oph obtained over 70 years previous to 2001 shows no indication of variability. Optical spectra of this star subsequently confirmed that V2552 Oph is a member of the hydrogen-deficient, carbon-rich RCB class of variables. It resembles the warm (Teff~7000 K) RCB stars such as R Coronae Borealis itself. Other RCB stars, such as XX Cam and Y Mus, have experienced similar periods of inactivity, going decades without significant dust formation. Further observations of V2552 Oph will be of great interest since there is an opportunity to monitor an RCB star that may be moving from prolonged inactivity into an active phase of dust production.

  8. Fishery Notes Texas' Brown Shrimp

    E-print Network

    Fishery Notes Texas' Brown Shrimp and 1983-84 Indices National Marine Fisheries Service scientists have concluded that the brown shrimp season offTexas will be poor and the catch for July 1983-June 1984 their historical averages. In the Gulf of Mexico, brown shrimp postlarvae enter the bays and passes when

  9. AURORA BOREALIS - European Research Icebreaker With Drilling Capability

    NASA Astrophysics Data System (ADS)

    Biebow, N.; Lembke-Jene, L.; Kunz-Pirrung, M.; Thiede, J.

    2008-12-01

    The polar oceans are the least known areas of the globe, in although they hold the key to many of our climate´s secrets. How does the sea ice coverage and the sea water properties change? How do plants and animals survive under the most extreme conditions of the earth? Which information of past climate change can be read from the sediments at the sea-floor and how can the future changing climate be predicted? In order to answer such and further questions, for the moment a hypermodern research vessel, the AURORA BOREALIS, is planned, which can handle the cool summers and freezing winters of the polar oceans and which can drill deep into the sea floor. AURORA BOREALIS will be the most advanced Research Icebreaker in the world with a multi-functional role of drilling in deep ocean basins and supporting climate/environmental research and decision support for stakeholder governments for the next 35-40 years. It will have a high icebreaking capacity to penetrate autonomously (single ship operation) into the central Arctic Ocean with more than 2.5 meters of ice cover, during all seasons of the year. The new technological features will include dynamic positioning in closed sea- ice cover, satellite navigation and ice-management support and the deployment and operation of Remotely Operated Vehicles (ROV) and Autonomous Underwater Vehicles (AUVs) from the twin moon-pools. A unique feature of the vessel is the deep-sea drilling rig, which will enable sampling of the ocean floor and sub-sea up to 5000 m water and 1000 m penetration at the most inhospitable places on earth. The drilling capability will be deployed in both Polar Regions on the long run and AURORA BOREALIS will be the only vessel worldwide that could undertake this type of scientific investigation.

  10. On the Inner Circumstellar Envelopes of R Coronae Borealis Stars

    NASA Astrophysics Data System (ADS)

    Leão, I. C.; Bright, S. N.; Chesneau, O.

    2015-12-01

    We present different analyses of Very Large Telescope Interferometer (VLTI) data to interpret the inner circumstellar envelope (CSE) morphology of R Coronae Borealis (RCB) stars. Three objects were considered: RY Sgr, V CrA, and V854 Cen. Chi-squared maps of different geometrical models allow to identify a reasonable description of these CSEs, which can be further studied in radiative transfer codes. Overall, the inner CSE morphology of these RCB stars are consistent with a central star surrounded by a dusty shell with at least a bright clump (or a dust cluster).

  11. Fluorine in R Coronae Borealis and Extreme Helium Stars

    E-print Network

    Gajendra Pandey; David L. Lambert; N. Kameswara Rao

    2007-12-24

    Neutral fluorine lines are identified in the optical spectra of several R Coronae Borealis stars (RCBs) at maximum light. These lines provide the first measurement of the fluorine abundance in these stars. Fluorine is enriched in some RCBs by factors of 800 to 8000 relative to its likely initial abundance. The overabundances of fluorine are evidence for the synthesis of fluorine. These results are discussed in the light of the scenario that RCBs are formed by accretion of an He white dwarf by a C-O white dwarf. Sakurai's object (V4334 Sgr), a final He-shell flash product, shows no detectable neutral fluorine lines.

  12. Investigating Brine Shrimp.

    ERIC Educational Resources Information Center

    Duran, Lena Ballone

    2003-01-01

    Presents a brine shrimp activity designed for students in grades 5-12 to foster authentic scientific inquiry in addition to providing an engaging and exciting avenue for student exploration. Emphasizes that inquiry should be a critical component in the science classroom. (KHR)

  13. SHRIMP FARMING by Donald M. Allen

    E-print Network

    ) I ,... SHRIMP FARMING l by Donald M. Allen CONTENTS Introduction···...···.·.. General life history of shrimp Culture methods··...·.·. Page Pond site and construction ··.·····.·.···.···.·. Preparation for stocking··..·.·.·.·...·..··...·....·. Acquisition of seed shrimp

  14. Organic cation secretion by Cancer borealis urinary bladder

    SciTech Connect

    Miller, D.S.; Holliday, C.W.

    1987-01-01

    In the crab, Cancer borealis, initial clearance studies showed a potent renal excretory system for the model organic cation, tetraethylammonium (TEA). (/sup 14/C)-TEA clearance averaged 145 +/- 32 ml/day, which was 18 times the paired polyethylene glycol clearance. TEA uptake by slices of urinary bladder was concentrative, saturable, inhibitable by N/sup 1/-methylnicotinamide chloride, and dependent on glycolytic, but not oxidative, metabolism. When mounted in flux chambers, bladders exhibited a large net secretory flux. For 0.1 mM TEA, the ratio of secretory to reabsorptive fluxes was 65. Urinary bladders from another crab, Cancer irroratus, and a lobster, Homarus americanus, also exhibited net TEA secretion. In C. borealis bladder, secretory transport was concentrative, saturable, and nearly abolished by addition of 1 mM quinine to the serosol bath. Reabsorptive transport was not concentrative and was not reduced by luminal quinine. The data are consistent with a secretory pathway that is transcellular and mediated by carriers at both the serosal and luminal membranes.

  15. 5. Aurora Borealis Pass over the United States at Night - Duration: 21 seconds.

    NASA Video Gallery

    This video of the United States at night and the Aurora Borealis was taken by the crew of Expedition 29 on board the International Space Station. This sequence of shots was taken September 29, 2011...

  16. DEVELOPMENT AND EARLY LIFE HISTORY OF THE NORTHERN SENNET, Sphyraena borealis DeKAY

    E-print Network

    ) in the Western Atlantic Ocean. Larvae of the northern sennet (also called northern barracuda), Sphyraena borealis). Development of S. barracuda (Wal- baum) , commencing with postlarval stages, was discussed by de Sylva (1963

  17. Migration and molt patterns of red bats, Lasiurus borealis (Chiroptera: Vespertilionidae), in Illinois

    E-print Network

    Timm, Robert M.

    1989-01-01

    Red bats, Lasiurus borealis (Chiroptera: Vespertilionidae), are widespread in North America, but many aspects of their biology are poorly known. In an attempt to elucidate patterns of migration and molt in red bats, data were collected over...

  18. Topographic and Roughness Characteristics of the Vastitas Borealis Formation on Mars Described by Fractal Statistics

    NASA Technical Reports Server (NTRS)

    Garneau, S.; Plaut, J. J.

    2000-01-01

    The surface roughness of the Vastitas Borealis Formation on Mars was analyzed with fractal statistics. Root mean square slopes and fractal dimensions were calculated for 74 topographic profiles. Results have implications for radar scattering models.

  19. THE SHRIMP AND THE SHRIMP INDUSTRY OF THE SOUTHERN UNIT,ED STATES

    E-print Network

    THE SHRIMP AND THE SHRIMP INDUSTRY OF THE SOUTHERN UNIT,ED STATES FISHERY LEAFLET No. 472 UNITED, D. C. #12;THE SHRIMP AND THE SHRIMP INDUSTRY OF THE SOUTHERN UNITED STATES by William W. Anderson Fishery Research Biologist The shrimp fishery of the United States is centered primarily in the eight

  20. Foreign Fishery Developments Thailand's Shrimp

    E-print Network

    Foreign Fishery Developments Thailand's Shrimp Culture Growing Pondcultivationofblacktigerprawns inthe Song- Table 1.-Thailand, Indonesia, and Philippine cultured shrimp harvests by quantity. 1984-88'. Harvest (1,000 t) 1987 25 45 33 Country 1984 1985 1986 Thailand 13 16 18 Indonesia 32 37 41 Philippines 29

  1. NOAAlNMFS Developments Shrimp 1981

    E-print Network

    NOAAlNMFS Developments Shrimp 1981 The u.s. shrimp industry in 1981 experienced another difficult year fol- lowing a poor year in 1980. There were some encouraging factors like the rec- ord shrimp, catches of shrimp in the south Atlantic and Pacific were off substantially. Fuel prices were about 20

  2. VARIABLE WINDS AND DUST FORMATION IN R CORONAE BOREALIS STARS

    SciTech Connect

    Clayton, Geoffrey C.; Zhang Wanshu; Geballe, T. R. E-mail: wzhan21@lsu.edu

    2013-08-01

    We have observed P-Cygni and asymmetric, blue-shifted absorption profiles in the He I {lambda}10830 lines of 12 R Coronae Borealis stars over short (1 month) and long (3 yr) timescales to look for variations linked to their dust-formation episodes. In almost all cases, the strengths and terminal velocities of the line vary significantly and are correlated with dust formation events. Strong absorption features with blue-shifted velocities {approx}400 km s{sup -1} appear during declines in visible brightness and persist for about 100 days after recovery to maximum brightness. Small residual winds of somewhat lower velocity are present outside of the decline and recovery periods. The correlations support models in which recently formed dust near the star is propelled outward at high speed by radiation pressure and drags the gas along with it.

  3. Aurora Borealis Experiment (ABX): A Planeterrella for Education and Outreach

    NASA Astrophysics Data System (ADS)

    McNulty, Michael; Carpe, Andy; Zwicker, Andrew

    2013-10-01

    The Planeterrella is an experiment invented by Jean Lilensten of the Laboratoire de Planetologie de Grenoble in France designed to simulate aurorae of various planets. It is done by placing two differently sized aluminum spheres in a bell jar with a pressure of approximately 75 mTorr. Each sphere has magnets inside and is electrically biased. An electrode with the opposite electrical bias is inserted into the bell jar so that the voltage between them is on the order of 300 V. A plasma is then created and an aurora is formed around the magnetic poles of the spheres or near the edge of the electrode. We have made a modified version of the planeterrella, called the Aurora Borealis Experiment (ABX), based upon Lilensten's plans. We will present the technical details of the experiment and preliminary results of its use with a variety of different audiences.

  4. What Is the Shell Around R Coronae Borealis?

    NASA Astrophysics Data System (ADS)

    Montiel, Edward J.; Clayton, Geoffrey C.; Marcello, Dominic C.; Lockman, Felix J.

    2015-07-01

    The hydrogen-deficient, carbon-rich R Coronae Borealis (RCB) stars are known for being prolific producers of dust which causes their large iconic declines in brightness. Several RCB stars, including R Coronae Borealis (R CrB), itself, have large extended dust shells seen in the far-infrared. The origin of these shells is uncertain but they may give us clues to the evolution of the RCB stars. The shells could form in three possible ways. (1) They are fossil Planetary Nebula (PN) shells, which would exist if RCB stars are the result of a final, helium-shell flash, (2) they are material left over from a white-dwarf (WD) merger event which formed the RCB stars, or (3) they are material lost from the star during the RCB phase. Arecibo 21 cm observations establish an upper limit on the column density of H I in the R CrB shell implying a maximum shell mass of ?0.3 M?. A low-mass fossil PN shell is still a possible source of the shell although it may not contain enough dust. The mass of gas lost during a WD merger event will not condense enough dust to produce the observed shell, assuming a reasonable gas-to-dust ratio. The third scenario where the shell around R CrB has been produced during the star’s RCB phase seems most likely to produce the observed mass of dust and the observed size of the shell. But this means that R CrB has been in its RCB phase for ?104 years.

  5. THE BAIT SHRIMP INDUSTRY OF THE GULF OF MEXICO

    E-print Network

    names of species mentioned in text Appendix II, Publications on biology of shrimp and bait shrimp and the broken-neck shrimp. In some areas, after periods of heavy rainfall, freshwater river shrimp enter the b

  6. AURORA BOREALIS: a polar-dedicated European Research Platform

    NASA Astrophysics Data System (ADS)

    Wolff-Boenisch, Bonnie; Egerton, Paul; Thiede, Joern; Roberto, Azzolini; Lembke-Jene, Lester

    2010-05-01

    Polar research and in particular the properties of northern and southern high latitude oceans are currently a subject of intense scientific debate and investigations, because they are subject to rapid and dramatic climatic variations. Polar regions react more rapidly and intensively to global change than other regions of the earth. A shrinking of the Arctic sea-ice cover, potentially leading to an opening of sea passages to the north of North America and Eurasia, on the long to a "blue" Arctic Ocean would additionally have a strong impact on transport, commerce and tourism bearing potential risk for humans and complex ecosystems in the future. In spite of their critical role processes and feedbacks, especially in winter but not exclusively, are virtually unknown: The Arctic Ocean for example, it is the only basin of the world's oceans that has essentially not been sampled by the drill ships of the Deep-Sea Drilling Project (DSDP) or the Ocean Drilling Program (ODP) and its long-term environmental history and tectonic structure is therefore poorly known. Exceptions are the ODP Leg 151 and the more recent very successful ACEX-expedition of the Integrated Ocean Drilling Program (IODP) in 2004. To help to address the most pressing questions regarding climate change and related processes, a Pan-European initiative in the field of Earth system science has been put in place: AURORA BOREALIS is the largest environmental research infrastructure on the ESFRI roadmap of the European Community. AURORA BOREALIS is a very powerful research icebreaker, which will enable year-round operations in the Arctic and the Antarctic as well as in the adjacent ocean basins. Equipped with its drilling rig, the vessel is also capable to explore the presently completely unknown Arctic deep-sea floor. Last but not least, the ship is a floating observatory and mobile monitoring platform that permits to measure on a long-term basis comprehensive time series in all research fields relevant to global climate change. Chances and challenges rest in securing the construction and operation costs that need a dedicated consortium of interested countries and institutions to help tackling the biggest challenges of the next decades.

  7. The Norris Survey of the Corona Borealis Supercluster

    NASA Astrophysics Data System (ADS)

    Small, Todd A.

    We describe the design, construction, and first results of the Norris Survey of the Corona Borealis Supercluster, a redshift survey of a 6^circ x 6^circ region in the core of the Corona Borealis supercluster. The redshift survey has been conducted with the 176-fiber Norris Spectrograph on the Hale 5m telescope. Our redshift catalog consists of 1654 extragalactic objects. The faintest galaxies in the survey have magnitudes of g ~22.5m, and the most distant galaxies have redshifts of z~0.7. . We have measured the redshifts of 528 galaxies in the supercluster itself. We find that the galaxy distribution within the supercluster is overall unrelaxed. The virial mass of the supercluster is (1.7+/-0.2)times10 16h^{-1} { rm M}_odot, which yields a B band mass-to-light ratio of 224+/-121h( {Mover L})_odot a scale of 10h^{-1} Mpc. A dynamical analysis suggests that the supercluster has not yet generated large flows towards itself and that, therefore, the supercluster has only recently begun to break away from the Hubble expansion. Since the redshift catalog extends to z = 0.5, we have been able to investigate the evolution of large -scale structure and of the galaxy population. Galaxies were more weakly clustered in the past. The comoving correlation length declines from {~}6h^ {-1} Mpc for local samples to 2.6 +/-0.5h^{-1} Mpc for galaxies with 0.3

  8. Aurorae: The earliest datable observation of the aurora borealis

    NASA Astrophysics Data System (ADS)

    Stephenson, F. Richard; Willis, David M.; Hallinan, Thomas J.

    2004-12-01

    The Late Babylonian astronomical texts, discovered at the site of Babylon (32.5°N, 44.4°E) more than a century ago, contain what is probably the earliest reliable account of the aurora borealis. A clay tablet recording numerous celestial observations made by the official astronomers during the 37th year of King Nebuchadnezzar II (568/567 BC) describes an unusual ``red glow'' in the sky at night; the exact date of this observation corresponds to the night of 12/13 March in 567 BC. The most likely interpretation of the phenomenon is an auroral display. This event occurred several centuries before the first clearly identifiable observation of the aurora from elsewhere in the world, namely China in 193 BC. The Babylonian auroral observation is remarkable in the sense that it is one of a series of carefully recorded astronomical observations, for each of which the year, month and day are known precisely. This observation occurred at a time when the geomagnetic (dipole) latitude of Babylon was about 41°N compared with the present value of 27.5°N, suggesting a higher auroral incidence at Babylon in 567 BC than at present.

  9. The grand aurorae borealis seen in Colombia in 1859

    NASA Astrophysics Data System (ADS)

    Cárdenas, Freddy Moreno; Sánchez, Sergio Cristancho; Domínguez, Santiago Vargas

    2016-01-01

    On Thursday, September 1, 1859, the British astronomer Richard Carrington, for the first time ever, observes a spectacular gleam of visible light on the surface of the solar disk, the photosphere. The Carrington Event, as it is nowadays known by scientists, occurred because of the high solar activity that had visible consequences on Earth, in particular reports of outstanding aurorae activity that amazed thousands of people in the western hemisphere during the dawn of September 2. The geomagnetic storm, generated by the solar-terrestrial event, had such a magnitude that the auroral oval expanded towards the equator, allowing low latitudes, like Panama's 9°N, to catch a sight of the aurorae. An expedition was carried out to review several historical reports and books from the northern cities of Colombia allowed the identification of a narrative from Montería, Colombia (8° 45?N), that describes phenomena resembling those of an aurorae borealis, such as fire-like lights, blazing and dazzling glares, and the appearance of an immense S-like shape in the sky. The very low latitude of the geomagnetic north pole in 1859, the lowest value in over half a millennia, is proposed to have allowed the observations of auroral events at locations closer to the equator, and supports the historical description found in Colombia. The finding of such chronicle represents one of the most complete descriptions of low-latitude sightings of aurorae caused by the Carrington Event.

  10. The Grand Aurorae Borealis Seen in Colombia in 1859

    E-print Network

    Cárdenas, Freddy Moreno; Domínguez, Santiago Vargas

    2015-01-01

    On Thursday, September 1, 1859, the British astronomer Richard Carrington, for the first time ever, observes a spectacular gleam of visible light on the surface of the solar disk, the photosphere. The Carrington Event, as it is nowadays known by scientists, occurred because of the high solar activity that had visible consequences on Earth, in particular reports of outstanding aurorae activity that amazed thousands of people in the western hemisphere during the dawn of September 2. The geomagnetic storm, generated by the solar-terrestrial event, had such a magnitude that the auroral oval expanded towards the equator, allowing low latitudes, like Panama's 9$^\\circ$ N, to catch a sight of the aurorae. An expedition was carried out to review several historical reports and books from the northern cities of Colombia, allowing the identification of a narrative from Monter\\'ia, Colombia (8$^\\circ$ 45' N), that describes phenomena resembling those of an aurorae borealis, such as fire-like lights, blazing and dazzling ...

  11. Movements of Brown Shrimp, Penaeus aztecus, and Pink Shrimp, P. duorarum, Relative to the

    E-print Network

    Movements of Brown Shrimp, Penaeus aztecus, and Pink Shrimp, P. duorarum, Relative to the U. EMILIANI Introduction The major fishery for brown shrimp, Penaeus aztecus, occurs in the western Gulf of Mexico. Annual U.S. landings of brown shrimp off Texas averaged 13,800 metric tons (t) between 1970

  12. TRENDS TOWARD DECREASING SIZE OF BROWN SHRIMP, PENAEUS AZTECUS, AND WHITE SHRIMP, PENAEUS SETIFERUS, IN

    E-print Network

    TRENDS TOWARD DECREASING SIZE OF BROWN SHRIMP, PENAEUS AZTECUS, AND WHITE SHRIMP, PENAEUS SETIFERUS and white shrimp in Texas and Louisiana from 1959 to 1976. Louisiana catches contained considerably greater proportions of small shrimp than did Texas catches. For both species and States, there was a significant trend

  13. Shrimp Farms, Ecuador

    NASA Technical Reports Server (NTRS)

    2006-01-01

    In many parts of the world, wetlands are being converted to shrimp ponds in order to farm these crustaceans for food and sale. One example is on the west coast of Ecuador, south of Guayaquil. The 1991 Landsat image on top shows a coastal area where 143 square kilometers of wetlands were converted to shrimp ponds. By the time ASTER acquired the bottom image in 2001, 243 square kilometers had been converted, eliminating 83% of the wetlands. These scenes cover an area of 30 x 31 km, and are centered near 3.4 degrees south latitude and 80.2 degrees west longitude.

    With its 14 spectral bands from the visible to the thermal infrared wavelength region, and its high spatial resolution of 15 to 90 meters (about 50 to 300 feet), ASTER images Earth to map and monitor the changing surface of our planet.

    ASTER is one of five Earth-observing instruments launched December 18, 1999, on NASA's Terra satellite. The instrument was built by Japan's Ministry of Economy, Trade and Industry. A joint U.S./Japan science team is responsible for validation and calibration of the instrument and the data products.

    The broad spectral coverage and high spectral resolution of ASTER provides scientists in numerous disciplines with critical information for surface mapping, and monitoring of dynamic conditions and temporal change. Example applications are: monitoring glacial advances and retreats; monitoring potentially active volcanoes; identifying crop stress; determining cloud morphology and physical properties; wetlands evaluation; thermal pollution monitoring; coral reef degradation; surface temperature mapping of soils and geology; and measuring surface heat balance.

    The U.S. science team is located at NASA's Jet Propulsion Laboratory, Pasadena, Calif. The Terra mission is part of NASA's Science Mission Directorate.

    Size: 30 by 31 kilometers (18.6 by 19.2 miles) Location: 3.4 degrees South latitude, 80.2 degrees West longitude Orientation: North at top Image Data: Landsat bands 4,3 and 2; ASTER bands 3, 2, and 1 Original Data Resolution: Landsat 30 meters (24.6 feet); ASTER 15 meters (49.2 feet) Dates Acquired: Landsat: April 29, 1991; ASTER March 31, 2001

  14. OXYGEN ISOTOPIC RATIOS IN COOL R CORONAE BOREALIS STARS

    SciTech Connect

    Garcia-Hernandez, D. A.; Rao, N. Kameswara; Hinkle, Ken H.; Eriksson, Kjell E-mail: dll@astro.as.utexas.ed E-mail: hinkle@noao.ed

    2010-05-01

    We investigate the relationship between R Coronae Borealis (RCB) stars and hydrogen-deficient carbon (HdC) stars by measuring precise {sup 16}O/{sup 18}O ratios for five cool RCB stars. The {sup 16}O/{sup 18}O ratios are derived by spectrum synthesis from high-resolution (R {approx} 50, 000) K-band spectra. Lower limits to the {sup 16}O/{sup 17}O and {sup 14}N/{sup 15}N ratios as well as Na and S abundances (when possible) are also given. RCB stars in our sample generally display less {sup 18}O than HdC stars-the derived {sup 16}O/{sup 18}O ratios range from 3 to 20. The only exception is the RCB star WX CrA, which seems to be an HdC-like star with {sup 16}O/{sup 18}O = 0.3. Our result of a higher {sup 16}O/{sup 18}O ratio for the RCB stars must be accounted for by a theory of the formation and evolution of HdC and RCB stars. We speculate that a late dredge-up of products of He burning, principally {sup 12}C and {sup 16}O, may convert an {sup 18}O-rich HdC star into an {sup 18}O-poor RCB star as the H-deficient star begins its final evolution from a cool supergiant to the top of the white dwarf cooling track.

  15. 21 CFR 161.176 - Frozen raw lightly breaded shrimp.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ...2013-04-01 false Frozen raw lightly breaded shrimp. 161.176 Section 161.176 Food and...Shellfish § 161.176 Frozen raw lightly breaded shrimp. Frozen raw lightly breaded shrimp complies with the provisions of §...

  16. 21 CFR 161.176 - Frozen raw lightly breaded shrimp.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ...2012-04-01 false Frozen raw lightly breaded shrimp. 161.176 Section 161.176 Food and...Shellfish § 161.176 Frozen raw lightly breaded shrimp. Frozen raw lightly breaded shrimp complies with the provisions of §...

  17. 21 CFR 161.176 - Frozen raw lightly breaded shrimp.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ...2014-04-01 false Frozen raw lightly breaded shrimp. 161.176 Section 161.176 Food and...Shellfish § 161.176 Frozen raw lightly breaded shrimp. Frozen raw lightly breaded shrimp complies with the provisions of §...

  18. 21 CFR 161.176 - Frozen raw lightly breaded shrimp.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ...2 2010-04-01 2010-04-01 false Frozen raw lightly breaded shrimp. 161.176 Section...Standardized Fish and Shellfish § 161.176 Frozen raw lightly breaded shrimp. Frozen raw lightly breaded shrimp complies with the...

  19. 21 CFR 161.176 - Frozen raw lightly breaded shrimp.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ...2 2011-04-01 2011-04-01 false Frozen raw lightly breaded shrimp. 161.176 Section...Standardized Fish and Shellfish § 161.176 Frozen raw lightly breaded shrimp. Frozen raw lightly breaded shrimp complies with the...

  20. Recent population expansion and connectivity in the hydrothermal shrimp

    E-print Network

    Borges, Rita

    ORIGINAL ARTICLE Recent population expansion and connectivity in the hydrothermal shrimp Rimicaris of the shrimp Rimicaris exoculata, which forms high-density local populations on hydrothermal vents along

  1. Expression and localization of an ice nucleating protein from a soil bacterium, Pseudomonas borealis.

    PubMed

    Vanderveer, Tara L; Choi, Julie; Miao, Denian; Walker, Virginia K

    2014-08-01

    An ice nucleating protein (INP) coding region with 66% sequence identity to the INP of Pseudomonas syringae was previously cloned from P. borealis, a plant beneficial soil bacterium. Ice nucleating activity (INA) in the P. borealis DL7 strain was highest after transfer of cultures to temperatures just above freezing. The corresponding INP coding sequence (inaPb or ina) was used to construct recombinant plasmids, with recombinant expression visualized using a green fluorescent protein marker (gfp encoding GFP). Although the P. borealis strain was originally isolated by ice-affinity, bacterial cultures with membrane-associated INP-GFP did not adsorb to pre-formed ice. Employment of a shuttle vector allowed expression of ina-gfp in both Escherichia coli and Pseudomonas cells. At 27 °C, diffuse fluorescence appeared throughout the cells and was associated with low INA. However, after transfer of cultures to 4 °C, the protein localized to the poles coincident with high INA. Transformants with truncated INP sequences ligated to either gfp, or an antifreeze protein-gfp fusion showed that the repetitive ice-nucleation domain was not necessary for localization. Such localization is consistent with the flanking residues of the INP associating with a temperature-dependent secretion apparatus. A polar location would facilitate INP-INP interactions resulting in the formation of larger aggregates, serving to increase INA. Expression of INPs by P. borealis could function as an efficient atmospheric dispersal mechanism for these soil bacteria, which are less likely to use these proteins for nutrient procurement, as has been suggested for P. syringae. PMID:24930584

  2. Arsenic in shrimp from Kuwait

    SciTech Connect

    Bou-Olayan, A.H.; Al-Yakoob, S.; Al-Hossaini, M.

    1995-04-01

    Arsenic is ubiquitous in the environment and can accumulate in food via contaminated soil, water or air. It enters the food chain through dry and wet atmospheric deposition. Combustion of oil and coal, use of arsenical fertilizers and pesticides and smelting of ores contributes significantly to the natural background of arsenic in soils and sediments. The metal can be transferred from soil to man through plants. In spite of variation in acute, subacute, and chronic toxic effects to plants and animals, evidence of nutritional essentiality of arsenic for rats, goats, and guinea pigs has been suggested, but has not been confirmed for humans. Adverse toxic effects of arsenic as well as its widespread distribution in the environment raises concern about levels of arsenic in man`s diet. Higher levels of arsenic in the diet can result in a higher accumulation rate. Arsenic levels in marine organisms are influenced by species differences, size of organism, and human activities. Bottom dwellers such as shrimp, crab, and lobster accumulate more arsenic than fish due to their frequent contact with bottom sediments. Shrimp constitute approximately 30% of mean total seafood consumption in Kuwait. This study was designed to determine the accumulation of arsenic in the commercially important jinga shrimp (Metapenaeus affinis) and grooved tiger prawn (Penaeus semisulcatus). 13 refs., 3 figs., 1 tab.

  3. EQUIPMENT FOR HOLDING AND RELEASING PENAEID SHRIMP

    E-print Network

    NOTES EQUIPMENT FOR HOLDING AND RELEASING PENAEID SHRIMP DURING MARKING EXPERIMENTS I Personnel of specialized equipment were developed to overcome problems of holding, handling, and releasing shrimp during the mark- ing phase of these experiments. Some of this equipment has been described previously by Costello

  4. NATURAL STABLE CARBON ISOTOPE TAG TRACES TEXAS SHRIMP MIGRATIONSl

    E-print Network

    NATURAL STABLE CARBON ISOTOPE TAG TRACES TEXAS SHRIMP MIGRATIONSl BRIAN FRy2 ABSTRACf A 1978 spring and early summer survey of Texas brown shrimp, Penaeus aztecus, showed that stable carbon isotope t13 C/12 C or 1l'3C) analysis is useful for tracing shrimp movements. At least four isotopi- cally distinct shrimp

  5. MFR PAPER 1267 Development of a Selective Shrimp Trawl

    E-print Network

    MFR PAPER 1267 Development of a Selective Shrimp Trawl for the Southeastern United States Penaeid Shrimp Fisheries JOHN W. WATSON, Jr. and CHARLES McVEA, Jr. ABSTRACT-Preliminary designs and evaluations are presented of experimental selective shrimp trawls for use in the southeastern United States penaeid shrimp

  6. Probiotics as Antiviral Agents in Shrimp Aquaculture

    PubMed Central

    Lakshmi, Bestha; Sai Gopal, D. V. R.

    2013-01-01

    Shrimp farming is an aquaculture business for the cultivation of marine shrimps or prawns for human consumption and is now considered as a major economic and food production sector as it is an increasingly important source of protein available for human consumption. Intensification of shrimp farming had led to the development of a number of diseases, which resulted in the excessive use of antimicrobial agents, which is finally responsible for many adverse effects. Currently, probiotics are chosen as the best alternatives to these antimicrobial agents and they act as natural immune enhancers, which provoke the disease resistance in shrimp farm. Viral diseases stand as the major constraint causing an enormous loss in the production in shrimp farms. Probiotics besides being beneficial bacteria also possess antiviral activity. Exploitation of these probiotics in treatment and prevention of viral diseases in shrimp aquaculture is a novel and efficient method. This review discusses the benefits of probiotics and their criteria for selection in shrimp aquaculture and their role in immune power enhancement towards viral diseases. PMID:23738078

  7. 76 FR 6603 - Certain Frozen Warmwater Shrimp from Thailand; Notice of Amended Final Results of Antidumping...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-02-07

    ...A-549-822] Certain Frozen Warmwater Shrimp from Thailand; Notice of Amended Final Results of Antidumping...frozen warmwater shrimp (shrimp) from Thailand. See Certain Frozen Warmwater Shrimp from Thailand: Final Results and Final Partial...

  8. 78 FR 42497 - Certain Frozen Warmwater Shrimp From Thailand: Final Results of Antidumping Duty Administrative...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-07-16

    ...Certain Frozen Warmwater Shrimp From Thailand: Final Results of Antidumping Duty Administrative...frozen warmwater shrimp (shrimp) from Thailand. The period of review (POR) is February...duty order with respect to shrimp from Thailand produced and exported by Marine...

  9. Common protein sequence signatures associate with Sclerotinia borealis lifestyle and secretion in fungal pathogens of the Sclerotiniaceae

    PubMed Central

    Badet, Thomas; Peyraud, Rémi; Raffaele, Sylvain

    2015-01-01

    Fungal plant pathogens produce secreted proteins adapted to function outside fungal cells to facilitate colonization of their hosts. In many cases such as for fungi from the Sclerotiniaceae family the repertoire and function of secreted proteins remains elusive. In the Sclerotiniaceae, whereas Sclerotinia sclerotiorum and Botrytis cinerea are cosmopolitan broad host-range plant pathogens, Sclerotinia borealis has a psychrophilic lifestyle with a low optimal growth temperature, a narrow host range and geographic distribution. To spread successfully, S. borealis must synthesize proteins adapted to function in its specific environment. The search for signatures of adaptation to S. borealis lifestyle may therefore help revealing proteins critical for colonization of the environment by Sclerotiniaceae fungi. Here, we analyzed amino acids usage and intrinsic protein disorder in alignments of groups of orthologous proteins from the three Sclerotiniaceae species. We found that enrichment in Thr, depletion in Glu and Lys, and low disorder frequency in hot loops are significantly associated with S. borealis proteins. We designed an index to report bias in these properties and found that high index proteins were enriched among secreted proteins in the three Sclerotiniaceae fungi. High index proteins were also enriched in function associated with plant colonization in S. borealis, and in in planta-induced genes in S. sclerotiorum. We highlight a novel putative antifreeze protein and a novel putative lytic polysaccharide monooxygenase identified through our pipeline as candidate proteins involved in colonization of the environment. Our findings suggest that similar protein signatures associate with S. borealis lifestyle and with secretion in the Sclerotiniaceae. These signatures may be useful for identifying proteins of interest as targets for the management of plant diseases. PMID:26442085

  10. Drilling Polar Oceans with the European Research Icebreaker AURORA BOREALIS: the IODP Context

    NASA Astrophysics Data System (ADS)

    Lembke-Jene, Lester; Wolff-Boenisch, Bonnie; Azzolini, Roberto; Thiede, Joern; Biebow, Nicole; Eldholm, Olav; Egerton, Paul

    2010-05-01

    Polar oceans are characterized by extreme environmental conditions for humans and materials, and have remained the least accessible regions to scientists of the IODP. DSDP and ODP have for long faced specific technical and logistical problems when attempting to drill in ice-covered polar deep-sea basins. The Arctic Ocean and large areas of the high-latitude Southern Ocean remained largely un-sampled by ODP and remain one of the major scientific and technological challenges for IODP. Drilling in these regions has been discussed and anticipated for decades and the scientific rationales are reflected in the science plans of the international Nansen Arctic Drilling Program (NAD) or the Arctic Program Planning Group (APPG) of ODP/IODP, amongst others. More recently, the rationale to investigate the polar oceans in a holistic approach has been outlined by workshops, leading to strategic assessments of the scientific potential and new drilling proposals. The European Polar Board took the initiative to develop a plan for a novel and dedicated research icebreaker with technical capabilities hitherto unrealised. This research icebreaker will enable autonomous operations in the central Arctic Ocean and the Southern Ocean, even during the severest ice conditions in the deep winter, serving all marine disciplines of polar research including scientific drilling: The European Research Icebreaker and Deep-Sea Drilling Vessel AURORA BOREALIS. AURORA BOREALIS is presently planned as a multi-purpose vessel. The ship can be deployed as a research icebreaker in all polar waters during any season of the year, as it shall meet the specifications of the highest ice-class attainable (IACS Polar Code 1) for icebreakers. During the times when it is not employed for drilling, it will operate as the most technically advanced multi-disciplinary research vessel in the Arctic or polar Southern Ocean. AURORA BOREALIS will be a "European scientific flagship facility" (fully open to non-European partners), a multidisciplinary platform for studies ranging from the sub-seafloor into the atmosphere. AURORA BOREALIS was planned for her role in deep-sea drilling in consultation with engineers and technical experts familiar with the program and the operation of these vessels. All techniques currently deployed on IODP expeditions can be implemented onboard the vessel under polar weather and ice conditions, including the full range of re-entry, casing and cementing, and instrumentation options and the entire suite of downhole logging tools. Due to sufficient laboratory space, a full analytical workflow can be easily established comparable to existing permanent platforms, including clean rooms, diverse scanning and logging or incubation facilities. While the vessel is equipped with a dedicated deep-sea drilling rig, other coring and drilling techniques can be employed if needed (e.g. Rockdrill, MEBO, large diameter Kasten cores). AURORA BOREALIS is fitted to operate a CALYPSO Piston Coring System in polar waters. Future mud-return systems under consideration and testing for IODP to provide controlled borehole conditions in difficult facies are compatible with the layout of AURORA BOREALIS. The berthing capacity of 120 personnel total (scientists, technical support and crew) allows to accommodate a sufficient number of science party members offshore. The present scientific implementation documents plan for about one polar scientific drilling expedition per year in a to-be-determined configuration. As the vessel is a multi-dsiciplinary platform, operations for the entire year are not dependant on drilling operations alone. While principal access to the vessel will be based on a competitive proposal review and evaluation system, the allocation of timeslots specifically for drilling would preferably be given over to IODP handling and planning systems in a cooperative mode using the strengths and capacitites of the future program. Depending on interests and needs of the scientific communities a preferential focus in non-drilling expedition planning could be e

  11. AURORA BOREALIS - Icebreaker, Drilling Platform and Multi-Purpose Research Vessel

    NASA Astrophysics Data System (ADS)

    Kunz-Pirrung, M.; Biebow, N.; Lembke-Jene, L.; Thiede, J.; Egerton, P.

    2007-12-01

    In spite of the critical role of the Arctic Ocean in climate evolution, it is the only sub-basin of the world's oceans that has essentially not been sampled by the drill ships of the Deep-Sea Drilling Project (DSDP) or the Ocean Drilling Program (ODP), and its long-term environmental history and tectonic structure is therefore poorly known. Exceptions are the ODP Leg 151 and the more recent very successful ACEX-expedition of the Integrated Ocean Drilling Program (IODP). This lack of data represents one of the largest gaps of information in modern Earth Science. Therefore, the new research icebreaker AURORA BOREALIS will be equipped with drilling facilities to fulfil the needs of the IODP for a -Mission-Specific Platform- to drill in deep, permanently ice-covered ocean basins. This icebreaker must be also powerful enough to maintain station against the drifting sea-ice cover and will have to be equipped with a dynamic positioning system. This new icebreaker would be conceived as an optimized science platform from the keel up and will allow conducting long, international and interdisciplinary expeditions into the central Arctic Ocean during all seasons of the year. In a long-term perspective the AURORA BOREALIS will also be used to address Antarctic research targets, both in its mode as a regular research vessel as well as a polar drill ship. The construction of AURORA BOREALIS requires several new technical implementations, such as advanced dynamic positioning and deep-sea drilling under a closed sea-ice cover and two moon pools (7 x 7 m), and will provide an extended technical potential and knowledge for marine technology. The scientific and technical details will be presented.

  12. AURORA BOREALIS - Development of a New Research Icebreaker with Drilling Capability

    NASA Astrophysics Data System (ADS)

    Thiede, J.; Biebow, N.; Egerton, P.; Kunz-Pirrung, M.; Lembke-Jene, L.

    2007-12-01

    Polar research both on land and in the sea cannot achieve the needed progress without novel and state of the art technologies and infrastructure. In addition, we have the obligation to equip the upcoming young and courageous generation of polar researchers with the most modern and safest research platforms the 21st century can provide. This effort will require major investments, both in terms of generating new tools, as well as maintaining and renovating existing infrastructure. There are many different novel tools under development for polar research, we will concentrate on the presently largest one, the planning for a new type of research icebreaker, the AURORA BOREALIS with an all-season capability of operations in permanently ice-covered waters and with the possibility to carry out deep-sea drilling in ice-covered deep-sea basins. AURORA BOREALIS will be the most advanced Polar Research Vessel in the world with a multi-functional role of drilling in deep ocean basins and supporting climate and environmental research and decision support for stakeholder governments for the next 35 to 40 years. The vessel is planned as a large research icebreaker with 44,000 tons displacement and a length of up to 196 m, with about 50 Megawatt propulsion power. Advanced technological features will include azimuth propulsion systems, extensive instrumental and airborne ice- management support, and the routine operation of Remotely Operated Vehicles (ROV) and Autonomous Underwater Vehicles (AUVs) from two moon-pools. An unique feature of this icebreaker will be the drilling rig that will enable sampling of the ocean floor and sub-sea down to 5000 m water depth and 1000 m penetration at the most inhospitable places on earth. The possibility to flexibly equip the ship with laboratory and supply containers, and the variable arrangement of other modular infrastructure (in particular, winches, cranes, etc.), free deck- space, and separate protected deck areas, will allow the planned research vessel to cover the needs of most disciplines in marine research. aurora-borealis.eu/en/about_aurora_borealis/

  13. THE HOT R CORONAE BOREALIS STAR DY CENTAURI IS A BINARY

    SciTech Connect

    Kameswara Rao, N.; Lambert, David L.; McArthur, Barbara; Garcia-Hernandez, D. A.; Woolf, Vincent M. E-mail: dll@astro.as.utexas.edu

    2012-11-20

    The remarkable hot R Coronae Borealis (RCB) star DY Cen is revealed to be the first and only binary system to be found among the RCB stars and their likely relatives, including the extreme helium stars and the hydrogen-deficient carbon stars. Radial velocity determinations from 1982 to 2010 have shown that DY Cen is a single-lined spectroscopic binary in an eccentric orbit with a period of 39.67 days. It is also one of the hottest and most H-rich member of the class of RCB stars. The system may have evolved from a common envelope to its current form.

  14. Hydrologic activity during late Noachian and Early Hesperian downwarping of Borealis Basin, Mars

    NASA Technical Reports Server (NTRS)

    Tanaka, Kenneth L.

    1991-01-01

    Pronounced global volcanism as well as fracturing and erosion along the highland/lowland boundary (HLB) during the Late Noachian (LN) and Early Hesperian (EH) led McGill and Dimitriou to conclude that the Borealis basin formed tectonically during this period. This scenario provides a basis for interpretation of the initiation and mode of formation of erosional and collapse features along the HLB. The interpretation, in turn, is integral to hypotheses regarding the development of ancient lakes (or an ocean) and their impact on the climate history of Mars. Hydrologic features of Mars are discussed along with their implications for paleolakes and climate history.

  15. Shrimp... a Treat from Biscayne Bay

    E-print Network

    in the winter. Roller frames and wing netters are two types of boats used to comb the seagrasses and sand flats for pink shrimp. There are approximately 27 roller frame boats and 350 top wing netter boats out

  16. Selenium requirement of shrimp Penaeus chinensis

    NASA Astrophysics Data System (ADS)

    Tian, Yuchuan; Liu, Fayi

    1993-09-01

    Penaeus chinensis were reared in fibreglass tanks for the study of their selenium requirements. The shrimp were fed semipurified diets containing graded levels of selenium, and weight gains, activities of glutatione peroxidase (GSH-Px) and selenium contents in muscle and hepatopancreas were determined. Weight gain and GSH-Px activity were the highest when the shrimp were fed diet containing 20 mg/kg selenium. Good linear correlation was found between GSH-Px activities and selenium contents in the diets, and the number of healthy shrimp. The experiment showed that 20 mg/kg selenium in the diet is optimal for the shrimp and that GSH-Px activity can be an important biochemical index of the selenium nutrition status of the animal.

  17. The Brine Shrimp's Butterfly Stroke

    E-print Network

    Johnson, Brennan; Dasi, Lakshmi Prasad

    2011-01-01

    We investigate the fluid dynamics of brine shrimp larvae swimming in this gallery of fluid motion video. Time resolved particle image velocimetry was performed using nano-particles as seeding material to measure the time dependent velocity and vorticity fields. The Reynolds number of the flow was roughly 8 and the Womerseley number (ratio of periodic forcing to viscous forcing) was about 5. Vorticity dynamics reveals the formation of a vortex ring structure at the tip of each arm at the beginning of the power stroke. This two vortex system evolves dramatically with time as the stroke progresses. The outer circulation is noted to weaken while the inner circulation strengthens over the power stroke. The gaining strength of the inner vortex correlates with the acceleration and forward movement of the larvae.

  18. Electrical coupling and innexin expression in the stomatogastric ganglion of the crab Cancer borealis.

    PubMed

    Shruti, Sonal; Schulz, David J; Lett, Kawasi M; Marder, Eve

    2014-12-01

    Gap junctions are intercellular channels that allow for the movement of small molecules and ions between the cytoplasm of adjacent cells and form electrical synapses between neurons. In invertebrates, the gap junction proteins are coded for by the innexin family of genes. The stomatogastric ganglion (STG) in the crab Cancer borealis contains a small number of identified and electrically coupled neurons. We identified Innexin 1 (Inx1), Innexin 2 (Inx2), Innexin 3 (Inx3), Innexin 4 (Inx4), Innexin 5 (Inx5), and Innexin 6 (Inx6) members of the C. borealis innexin family. We also identified six members of the innexin family from the lobster Homarus americanus transcriptome. These innexins show significant sequence similarity to other arthropod innexins. Using in situ hybridization and reverse transcriptase-quantitative PCR (RT-qPCR), we determined that all the cells in the crab STG express multiple innexin genes. Electrophysiological recordings of coupling coefficients between identified pairs of pyloric dilator (PD) cells and PD-lateral posterior gastric (LPG) neurons show that the PD-PD electrical synapse is nonrectifying while the PD-LPG synapse is apparently strongly rectifying. PMID:25210156

  19. New data support the existence of the Hercules-Corona Borealis Great Wall

    E-print Network

    Horvath, Istvan; Hakkila, Jon; Toth, L Viktor

    2015-01-01

    Several large structures, including the Sloan Great Wall, the Huge Large Quasar Group, and a large gamma-ray burst cluster referred to as the Hercules-Corona Borealis Great Wall, appear to exceed the maximum structural size predicted by Universal inflationary models. The existence of very large structures such as these might necessitate cosmological model modifications. Gamma-ray bursts are the most luminous sources found in nature. They are associated with the stellar endpoints of massive stars and are found in and near distant galaxies. Since they are viable indicators of the dense part of the Universe containing normal matter, the spatial distribution of gamma-ray bursts can serve as tracers of Universal large-scale structure. An increased sample size of gamma-ray bursts with known redshift provides us with the opportunity to validate or invalidate the existence of the Hercules-Corona Borealis Great Wall. Nearest-neighbour tests are used to search the larger sample for evidence of clustering and a bootstra...

  20. Xenopus borealis as an alternative source of oocytes for biophysical and pharmacological studies of neuronal ion channels

    PubMed Central

    Cristofori-Armstrong, Ben; Soh, Ming S.; Talwar, Sahil; Brown, Darren L.; Griffin, John D. O.; Dekan, Zoltan; Stow, Jennifer L.; King, Glenn F.; Lynch, Joseph W.; Rash, Lachlan D.

    2015-01-01

    For the past 30 years, oocytes from Xenopus laevis have been extensively used to express and characterise ion channels in an easily controlled environment. Here we report the first use of oocytes from the closely related species Xenopus borealis as an alternative expression system for neuronal ion channels. Using the two-electrode voltage-clamp technique, we show that a wide variety of voltage- and ligand-gated ion channels have the same channel properties and pharmacological profiles when expressed in either X. laevis or X. borealis oocytes. Potential advantages of the X. borealis oocytes include a smaller endogenous chloride current and the ability to produce more intense fluorescence signals when studied with voltage-clamp fluorometry. Scanning electron microscopy revealed a difference in vitelline membrane structure between the two species, which may be related to the discrepancy in fluorescence signals observed. We demonstrate that X. borealis oocytes are a viable heterologous system for expression of neuronal ion channels with some potential advantages over X. laevis oocytes for certain applications. PMID:26440210

  1. OUSEHOlD CONSUMER PREFERENCES ~EADED SHRIMP & BREADED FISH STICKS

    E-print Network

    OUSEHOlD CONSUMER PREFERENCES for ~EADED SHRIMP & BREADED FISH STICKS PART 1 NATIONAL AND REGIONAL·· Contents Introduction · · . . . · · · · · · . . . · · · · · · · · S~. . . · . . . . . . Breaded Shrimp Consumption · . Breaded Fish Stick Conswnption · . · · Family Home Cons~)tion of Fish and Shellfish

  2. Incidence and inactivation of Listeria spp. on frozen shrimp

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Foodborne illness outbreaks occasionally occur as a result of microbiologically contaminated crustaceans, including shrimp. Foodborne pathogens occasionally found on shrimp include Listeria monocytogenes, Salmonella spp., Staphylococcus aureus, and Vibrios. In this study the microbiological qualit...

  3. Shrimp Farms and Mangroves, Gulf of Fonseca

    NASA Technical Reports Server (NTRS)

    2002-01-01

    For decades, astronauts on space missions have documented land use changes around the world. In this pair of images, astronauts track the development of shrimp farming along the Honduran coastline of the Gulf of Fonseca between 1989 and 2001. Mariculture, primarily shrimp farming, has become a leading agricultural effort in Honduras. The regional transformation of large tracts of coastal swamps into shrimp farms blossomed throughout the 1990s. The top image was taken with color infrared film in 1989. Dense vegetation, like the coastal mangrove swamps and the forested slopes of Volcan Cosiguina show up as dark red. The bottom image, taken with color visible film by the crew of the most recent Space Shuttle mission in December 2001 shows that hundreds of square kilometers of coastal swamp, primarily in Honduras, have been converted to shrimp ponds. These appear as the light-colored, rectilinear land use pattern. The Honduras shrimp farms were hit hard by flooding after Hurricane Mitch in 1998, and a devastating virus in 1999-2000. It is not known how many of the ponds in this view are still functional. A vigorous debate continues about the sustainability of the shrimp farms and the impacts to the environment and coastal ecosystem due to mangrove clearing and mariculture waste production. Apart from the shrimp farms, the other prominent feature on these images is the impressive volcano Cosiguina, which erupted explosively in 1859 (the largest recorded eruption in the Western Hemisphere). Photograph STS-108-717-85 was taken in the December 2001 by the crew of Space Shuttle mission 108 using a Hasselblad camera with 250-mm lens. Photograph STS030-93-15 was taken in May 1989 using a Hasselblad camera and color infrared film. Both images are provided by the Earth Sciences and Image Analysis Laboratory at Johnson Space Center. Additional images taken by astronauts and cosmonauts can be viewed at the NASA-JSC Gateway to Astronaut Photography of Earth.

  4. SIZE DISTRIBUTION OF PINK SHRIMP, Penaeus duorarum, AND FLEET

    E-print Network

    56 SIZE DISTRIBUTION OF PINK SHRIMP, Penaeus duorarum, AND FLEET CONCENTRATIONS ON THE TORTUGAS of Commercial Fisheries, Donald L. McKernan, Director SIZE DISTRIBUTION OF PINK SHRIMP, Penaeus duorarum Acknowledgments 3 Methods and materials 3 Vessels and gear 3 Observations of fleet activity 5 Shrimp discards 6

  5. LENGTH-WEIGHT RELATION IN THE COMMON OR WHITE SHRIMP

    E-print Network

    LENGTH-WEIGHT RELATION IN THE COMMON OR WHITE SHRIMP PENAEUS SETIFERUS Marine Biological, Arnie J. Suomela, Commissioner LENGTH-WEIGHT RELATION IN THE COMMON OR WHITE SHRIMP, PENAEUS SETIFERUS. C. May 1958 #12;#12;LENGTH-WEIGHT RELATION IN THE COMMON OR WHITE SHRIMP , PENAEUS SETIFERUS

  6. Surface-to-Bottom Pot Fishing for Pandalid Shrimp

    E-print Network

    560 Surface-to-Bottom Pot Fishing for Pandalid Shrimp Marlr aboralory library FEB 1 2 1968 WOODS Fisheries, H. E. Crowther, Director Surface-to-Bottom Pot Fishing for Pandalid Shrimp By LOUIS BARR fishing 6 Literature cited 6 #12;#12;Surface-to-Bottom Pot Fishing for Pandalid Shrimp By LOUIS BARR

  7. 21 CFR 102.55 - Nonstandardized breaded composite shrimp units.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ...false Nonstandardized breaded composite shrimp units. 102.55 Section 102.55...55 Nonstandardized breaded composite shrimp units. (a) The common on usual...except that the food is made from comminuted shrimp and is not in raw frozen form, shall...

  8. 21 CFR 102.55 - Nonstandardized breaded composite shrimp units.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ...false Nonstandardized breaded composite shrimp units. 102.55 Section 102.55...55 Nonstandardized breaded composite shrimp units. (a) The common on usual...except that the food is made from comminuted shrimp and is not in raw frozen form, shall...

  9. 21 CFR 102.55 - Nonstandardized breaded composite shrimp units.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ...false Nonstandardized breaded composite shrimp units. 102.55 Section 102.55...55 Nonstandardized breaded composite shrimp units. (a) The common on usual...except that the food is made from comminuted shrimp and is not in raw frozen form, shall...

  10. 21 CFR 102.55 - Nonstandardized breaded composite shrimp units.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ...false Nonstandardized breaded composite shrimp units. 102.55 Section 102.55...55 Nonstandardized breaded composite shrimp units. (a) The common on usual...except that the food is made from comminuted shrimp and is not in raw frozen form, shall...

  11. GROWTH, MIGRATIONS, SPAWNING AN-D SIZE DISTRIBUTION OF SHRIMP

    E-print Network

    GROWTH, MIGRATIONS, SPAWNING AN-D SIZE DISTRIBUTION OF SHRIMP PENAEUS SETIFERUS BY MILTON J growth and migration patterns, approximately 45,000 shrimp were tagged and released between 1935 and 1939, in separate areas of the coast from North Carolina to Mexico. Of the shrimp released, more than 7,000 were

  12. 21 CFR 102.55 - Nonstandardized breaded composite shrimp units.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ...false Nonstandardized breaded composite shrimp units. 102.55 Section 102.55...55 Nonstandardized breaded composite shrimp units. (a) The common on usual...except that the food is made from comminuted shrimp and is not in raw frozen form, shall...

  13. Stock Assessment Update for White Shrimp (Litopenaeus setiferus)

    E-print Network

    Stock Assessment Update for White Shrimp (Litopenaeus setiferus) in the U.S. Gulf of Mexico shrimp (Litopenaeus setiferus) population behavior when parameterized with over 25 years of commercial white shrimp data from 1984 - 2013. In the full time series model run, fits to the CPUE estimates, size

  14. Burrowing shrimp as foundation species in NE Pacific estuaries

    EPA Science Inventory

    My talk will be about the my research to characterize the role that burrowing shrimp play as foundation/engineering species in Pacific NW estuaries. My research has focused on measuring the abundance & distribution of two species (ghost shrimp & mud shrimp) at ecosystem scales, ...

  15. Breaking the Ice: Strategies for Future European Research in the Polar Oceans - The AURORA BOREALIS Concept

    NASA Astrophysics Data System (ADS)

    Lembke-Jene, L.; Biebow, N.; Wolff-Boenisch, B.; Thiede, J.; European Research Icebreaker Consortium

    2011-12-01

    Research vessels dedicated to work in polar ice-covered waters have only rarely been built. Their history began with Fritjof Nansen's FRAM, which he used for his famous first crossing of the Arctic Ocean 1893-1896. She served as example for the first generation of polar research vessels, at their time being modern instruments planned with foresight. Ice breaker technology has developed substantially since then. However, it took almost 80 years until this technical advance also reached polar research, when the Russian AKADEMIK FEDEROV, the German POLARSTERN, the Swedish ODEN and the USCG Cutter HEALY were built. All of these house modern laboratories, are ice-breakers capable to move into the deep-Arctic during the summer time and represent the second generation of dedicated polar research vessels. Still, the increasing demand in polar marine research capacities by societies that call for action to better understand climate change, especially in the high latitudes is not matched by adequate facilities and resources. Today, no icebreaker platform exists that is permanently available to the international science community for year-round expeditions into the central Arctic Ocean or heavily ice-infested waters of the polar Southern Ocean around Antarctica. The AURORA BOREALIS concept plans for a heavy research icebreaker, which will enable polar scientists around the world to launch international research expeditions into the central Arctic Ocean and the Antarctic continental shelf seas autonomously during all seasons of the year. The European Research Icebreaker Consortium - AURORA BOREALIS (ERICON-AB) was established in 2008 to plan the scientific, governance, financial, and legal frameworks needed for the construction and operation of this first multi-nationally owned and operated research icebreaker and polar scientific drilling platform. By collaborating together and sharing common infrastructures it is envisioned that European nations make a major contribution to tackle problems of high societal relevance beyond the scope of individual disciplines. It is planned to use part of the berthing capacity of AURORA BOREALIS for dedicated university education and teaching programmes in order to give future polar scientists the best training facilities available and enable a vital international exchange between educational centres. This aims at helping to vertically structure the new generation of young and well-trained students and playing a key role in the construction of an efficient research and innovation environment for future collaboration in polar research

  16. Aurora Borealis: stochastic cellular automata simulations of the excited-state dynamics of oxygen atoms.

    NASA Astrophysics Data System (ADS)

    Seybold, P. G.; Kier, L. B.; Cheng, C.-K.

    1999-12-01

    Emissions from the 1S and 1D excited states of atomic oxygen play a prominent role in creating the dramatic light displays (aurora borealis) seen in the skies over polar regions of the Northern Hemisphere. A probabilistic asynchronous cellular automaton model described previously has been applied to the excited-state dynamics of atomic oxygen. The model simulates the time-dependent variations in ground (3P) and excited-state populations that occur under user-defined probabilistic transition rules for both pulse and steady-state conditions. Although each trial simulation is itself an independent "experiment", deterministic values for the excited-state emission lifetimes and quantum yields emerge as limiting cases for large numbers of cells or large numbers of trials. Stochastic variations in the lifetimes and emission yields can be estimated from repeated trials.

  17. Low-frequency vocalizations of sei whales (Balaenoptera borealis) in the Southern Ocean.

    PubMed

    Calderan, Susannah; Miller, Brian; Collins, Kym; Ensor, Paul; Double, Michael; Leaper, Russell; Barlow, Jay

    2014-12-01

    Simultaneous sightings and acoustic detections of sei whales (Balaenoptera borealis) are scarce, and there are few published data describing their vocalizations. Analysis of recordings from directional frequency analysis and recording sonobuoys in the presence of sei whales in the Southern Ocean in March 2013 identified both downsweep and upsweep calls. Sound frequencies within all calls were between 34 and 87?Hz with an average call duration of 1.1?s. These very low-frequency sounds share characteristics with sei whale calls recorded near the Hawaiian Islands and off Cape Cod in winter and summer, respectively, but are the first documented sei whale calls in the Southern Ocean that are clearly less than 100?Hz. PMID:25480092

  18. Chitosan Fibers Modified with HAp/?–TCP Nanoparticles

    PubMed Central

    Wawro, Dariusz; Pighinelli, Luciano

    2011-01-01

    This paper describes a method for preparing chitosan fibers modified with hydroxyapatite (HAp), tricalcium phosphate (?-TCP), and HAp/?-TCP nanoparticles. Fiber-grade chitosan derived from the northern shrimp (Pandalus borealis) and nanoparticles of tricalcium phosphate (?-TCP) and hydroxyapatite (HAp) suspended in a diluted chitosan solution were used in the investigation. Diluted chitosan solution containing nanoparticles of Hap/?-TCP was introduced to a 5.16 wt% solution of chitosan in 3.0 wt% acetic acid. The properties of the spinning solutions were examined. Chitosan fibers modified with nanoparticles of HAp/?-TCP were characterized by a level of tenacity and calcium content one hundred times higher than that of regular chitosan fibers. PMID:22174598

  19. New data support the existence of the Hercules-Corona Borealis Great Wall

    NASA Astrophysics Data System (ADS)

    Horváth, István; Bagoly, Zsolt; Hakkila, Jon; Tóth, L. V.

    2015-12-01

    Context. Several large structures, including the Sloan Great Wall, the Huge Large Quasar Group, and a large gamma-ray burst cluster referred to as the Hercules-Corona Borealis Great Wall, appear to exceed the maximum structural size predicted by Universal inflationary models. The existence of very large structures such as these might necessitate cosmological model modifications. Aims: Gamma-ray bursts are the most luminous sources found in nature. They are associated with the stellar endpoints of massive stars and are found in and near distant galaxies. Since they are viable indicators of the dense part of the Universe containing normal matter, the spatial distribution of gamma-ray bursts can serve as tracers of Universal large-scale structure. Methods: An increased sample size of gamma-ray bursts with known redshift provides us with the opportunity to validate or invalidate the existence of the Hercules-Corona Borealis Great Wall. Nearest-neighbour tests are used to search the larger sample for evidence of clustering and a bootstrap point-radius method is used to estimate the angular cluster size. The potential influence of angular sampling biasing is studied to determine the viability of the results. Results: The larger gamma-ray burst database further supports the existence of a statistically significant gamma-ray burst cluster at 1.6 ? z < 2.1 with an estimated angular size of 2000-3000 Mpc. Conclusions: Although small number statistics limit our angular resolution and do not rule out the existence of adjacent and/or line-of-sight smaller structures, these structures must still clump together in order for us to see the large gamma-ray burst cluster detected here. This cluster provides support for the existence of very large-scale universal heterogeneities. Appendix A is available in electronic form at http://www.aanda.org

  20. Alkanes in shrimp from the Buccaneer Oil Field

    SciTech Connect

    Middleditch, B.S.; Basile, B.; Chang, E.S.

    1982-07-01

    A total of 36 samples of shrimp were examined from the region of the Buccaneer oil field, eighteen of which were representatives of the commercial species Penaeus aztecus and the rest were various other species: Penaeus duorarum (pink shrimp), Trachypenaeus duorarum (sugar shrimp), Squilla empusa (mantis shrimp), and Sicyonia dorsalis (chevron shrimp). The alkanes and deuteriated alkanes were completely separated by GC, so a mass spectrometer was not required for their detection and quantitation. To confirm the identities of individual compounds, however, some samples were examined by combined gas chromatography-mass spectrometry. Results show that only thirteen of the forty shrimp collected from the region of the Buccaneer oil field contained petroleum alkanes, and the majority of these were obtained from trawls immediately adjacent to the production platforms. It appears that shrimp caught in the region of the Buccaneer oil field are not appreciably tainted with hydrocarbons discharged from the production platforms. (JMT)

  1. Vulnerability of coastal livelihoods to shrimp farming: Insights from Mozambique.

    PubMed

    Blythe, Jessica; Flaherty, Mark; Murray, Grant

    2015-05-01

    Millions of people around the world depend on shrimp aquaculture for their livelihoods. Yet, the phenomenal growth of shrimp farming has often given rise to considerable environmental and social damage. This article examines the impacts of commercial, export-oriented shrimp aquaculture on local livelihood vulnerability by comparing the exposure, sensitivity, and adaptive capacity of shrimp farm employees with non-farm employees in rural Mozambique. Exposure to stressors was similar between the two groups. Shrimp farm employees had higher assets and higher adaptive capacity than non-farm employees. However, because their income is heavily dependent on a single commodity, shrimp farm employees were highly susceptible to the boom crop nature of intensive shrimp farming. The implications for aquaculture policy and vulnerability research are discussed. The article argues that coastal vulnerability is dynamic, variable, and influenced by multiple processes operating at multiple scales. PMID:25391555

  2. Antibiotic-Resistant Vibrios in Farmed Shrimp

    PubMed Central

    Albuquerque Costa, Renata; Araújo, Rayza Lima; Souza, Oscarina Viana; Vieira, Regine Helena Silva dos Fernandes

    2015-01-01

    Antimicrobial susceptibility pattern was determined in 100 strains of Vibrio isolated from the Litopenaeus vannamei shrimp and identified phenotypically. A high antibiotic-resistance index (75%) was observed, with the following phenotypic profiles: monoresistance (n = 42), cross-resistance to ?-lactams (n = 20) and multiple resistance (n = 13). Plasmid resistance was characterized for penicillin (n = 11), penicillin + ampicillin (n = 1), penicillin + aztreonam (n = 1), and ampicillin (n = 1). Resistance to antimicrobial drugs by the other strains (n = 86) was possibly mediated by chromosomal genes. The findings of this study support the conclusion that the cultured shrimps can be vehicles of vibrios resistant to ?-lactam and tetracycline. PMID:25918714

  3. Hand injuries from shrimp boat winches.

    PubMed

    Viegas, S F; O'Meara, C

    1986-09-01

    Shrimp boat winch injury to the upper extremity was identified in three patients. The injury occurred when the individual's hand became entrapped in the cable and the upper extremity was drawn into the winch mechanism. This resulted in midshaft fractures of one or both bones of the forearm and amputation of a portion of the fourth and fifth fingers. This injury emphasizes the importance of safeguards on the cable system. However, in the absence of safety regulations in the shrimping industry, more of these injuries can be expected. PMID:3746963

  4. Participation of U. S. Trawlers in the Offshore Shrimp Fisheries of

    E-print Network

    Participation of U. S. Trawlers in the Offshore Shrimp Fisheries of French Guiana, Surinam working group met in Panama in 1979 and reviewed the existing knowledge of the Gui- anas-Brazil shrimp-Brazil shrimp grounds (Fig. 1), harbor four commercial species of shrimp: Brown shrimp, Penaeus subti/is; pink

  5. Habitat Suitability Index Models: Northern Gulf of Mexico Brown Shrimp and White Shrimp

    USGS Publications Warehouse

    Turner, Robert Eugene; Brody, Michael S.

    1983-01-01

    A review and synthesis of existing information were used to develop estuarine habitat models for brown shrimp (Penaeus aztecus) and white shrimp (Penaeus setiferus). The models are scaled to produce an index of habitat suitability between 0 (unsuitable habitat) to 1 (optimally suitable habitat) for estuarine areas of the northern Gulf of Mexico. Habitat suitability indexes are designed for use with the habitat evaluation procedures developed by the U.S. Fish and Wildlife Service.

  6. Species profiles: Life histories and environmental requirements of coastal fishes and invertebrates (Pacific Northwest): Ghost shrimp and blue mud shrimp

    SciTech Connect

    Horning, S.; Sterling, A.; Smith, S.D.

    1989-01-01

    Species profiles are literature summaries of the taxonomy, morphology, range, life history, and environmental requirements of coastal aquatic species. The profiles are prepared to assist in environmental impact assessments. The ghost shrimp (Callianassa californiensis) and blue mud shrimp (Upogebia pugettensis) are common residents of intertidal mudflats of the Pacific Northwest, as well as of the entire West Coast of the contiguous United States. These species are decapod crustaceans, but not true shrimp. They are harvested as bait by recreational and commercial oyster-growing operations. Ghost shrimp larvae develop in summer in nearshore coastal waters and settle to the substrate surface, where they rapidly metamorphose; the life cycle of the blue mud shrimp is presumed to be similar. Both species spend their lives in burrows in the mudflat, where the ghost shrimp is primarily a deposit feeder and the blue mud shrimp is a suspension feeder.

  7. 76 FR 23972 - Certain Frozen Warmwater Shrimp From Brazil, India, the People's Republic of China, Thailand, and...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-04-29

    ...Certain Frozen Warmwater Shrimp From Brazil, India, the People's Republic of China...frozen warmwater shrimp (shrimp) from Brazil, India, the People's Republic of China...antidumping duty orders on shrimp from Brazil, India, the PRC, Thailand, and...

  8. Discovery of a Previously Unrecognised Allusion to the Aurora Borealis in Paradise Lost, and Implications for Edmund Halley Scholarship

    NASA Astrophysics Data System (ADS)

    Cunningham, Clifford J.

    2014-11-01

    This research reveals that John Milton employed an allusion to the aurora borealis in the epic poem Paradise Lost which has not been recognised in more than three centuries of scholarly analysis. It further disproves the long-held belief, made popular by the astronomer Edmund Halley, that no notable aurora was visible in England in the seventeenth century. A study of the personal Latin diary of the Elizabethan historian William Camden shows that the famous aurora of 1621 was visible in England. While Pierre Gassendi has been credited with creation of the term 'aurora borealis' based on his report of the 1621 aurora, this study reaffirms a neglected analysis from 1986 that established the term originated with Galileo in 1619.

  9. Cobalt-60 gamma irradiation of shrimp

    SciTech Connect

    Sullivan, N.L.B.

    1993-01-01

    Meta- and ortho-tyrosine were measured using high performance liquid chromatography (HPLC) in conjunction with electrochemical detection in shrimp irradiated using cobalt-60 gamma radiation in the absorbed dose range 0.8 to 6.0 kGy, in nonirradiated shrimp, and in bovine serum albumin (BSA) irradiated in dilute aqueous solution at 25.0 kGy. Ortho-tyrosine was measured in nonirradiated BSA. Para-, meta-, and ortho-tyrosine was measured using HPLC in conjunction with uv-absorption detection in dilute aqueous solutions of phenylalanine irradiated in the absorbed dose range 16.0 to 195.0 kGy. The measured yields of tyrosine isomers were approximately linear as a function of absorbed dose in shrimp, and in irradiated solutions of phenylalanine up to 37.0 kGy. The occurrence of meta- and ortho-tyrosine, which had formerly been considered unique radiolytic products, has not previously been reported in nonirradiated shrimp or BSA. The conventional hydrolyzation and analytical techniques used in the present study to measure meta- and ortho-tyrosine may provide the basis for a method to detect and determine the dose used in food irradiation.

  10. Pacific white shrimp culture in inland ponds

    Technology Transfer Automated Retrieval System (TEKTRAN)

    The Pacific white shrimp (Litopenaeus vannamei), a tropical species grown throughout Latin America and now introduced into Asia, adapts to and grows well in low-salinity water. Pond culture of L. vannamei has expanded to inland regions across the southern US where low-salinity ground water is availa...

  11. GLUCOSE OXIDASE REDUCES OXIDATION IN FROZEN SHRIMP

    E-print Network

    GLUCOSE OXIDASE REDUCES OXIDATION IN FROZEN SHRIMP Carolyn Kelley Glucose oxidase-cat alase role oxygen can have during storage of foods (Scott, 1958). Glucose oxidase-catalase preparations are used to carry out the net reaction: 2 glucose + oxygen glucose oxidase > 2 gluconic acid. catalase

  12. MFR PAPER 1171 Shrimp taste and vitamin

    E-print Network

    MFR PAPER 1171 Shrimp taste and vitamin content did not differ markedly in thermal and microwave been done on vitamin anal '>es of \\egetables cooked b) micro~\\ ave and ~onven ti )nalmean hot spot. by employing peliodic stilTing. Vitamin selected for thi "tud) \\~e;e those \\\\ hich had been

  13. MFR PAPER 103 0 An important shrimp

    E-print Network

    MFR PAPER 103 0 An important shrimp fishery has blossomed in Indonesia since 1965. A Review fro m \\0\\ hich th e landings were collected and ta ken to Marine scientist M. Unar has been associated has been Director of the Marine Fishery Institute in Jakarta. He is now a lecturer with the Facul- ty

  14. 40 CFR 408.100 - Applicability; description of the remote Alaskan shrimp processing subcategory.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ...Applicability; description of the remote Alaskan shrimp processing subcategory. 408.100...POINT SOURCE CATEGORY Remote Alaskan Shrimp Processing Subcategory § 408.100...Applicability; description of the remote Alaskan shrimp processing subcategory. The...

  15. 40 CFR 408.100 - Applicability; description of the remote Alaskan shrimp processing subcategory.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ...Applicability; description of the remote Alaskan shrimp processing subcategory. 408.100...POINT SOURCE CATEGORY Remote Alaskan Shrimp Processing Subcategory § 408.100...Applicability; description of the remote Alaskan shrimp processing subcategory. The...

  16. 40 CFR 408.100 - Applicability; description of the remote Alaskan shrimp processing subcategory.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ...Applicability; description of the remote Alaskan shrimp processing subcategory. 408.100...POINT SOURCE CATEGORY Remote Alaskan Shrimp Processing Subcategory § 408.100...Applicability; description of the remote Alaskan shrimp processing subcategory. The...

  17. 40 CFR 408.100 - Applicability; description of the remote Alaskan shrimp processing subcategory.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ...Applicability; description of the remote Alaskan shrimp processing subcategory. 408.100...POINT SOURCE CATEGORY Remote Alaskan Shrimp Processing Subcategory § 408.100...Applicability; description of the remote Alaskan shrimp processing subcategory. The...

  18. 40 CFR 408.90 - Applicability; description of the non-remote Alaskan shrimp processing subcategory.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ...description of the non-remote Alaskan shrimp processing subcategory. 408.90 ...SOURCE CATEGORY Non-Remote Alaskan Shrimp Processing Subcategory § 408.90 ...description of the non-remote Alaskan shrimp processing subcategory. The...

  19. 40 CFR 408.90 - Applicability; description of the non-remote Alaskan shrimp processing subcategory.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ...description of the non-remote Alaskan shrimp processing subcategory. 408.90 ...SOURCE CATEGORY Non-Remote Alaskan Shrimp Processing Subcategory § 408.90 ...description of the non-remote Alaskan shrimp processing subcategory. The...

  20. 40 CFR 408.90 - Applicability; description of the non-remote Alaskan shrimp processing subcategory.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ...description of the non-remote Alaskan shrimp processing subcategory. 408.90 ...SOURCE CATEGORY Non-Remote Alaskan Shrimp Processing Subcategory § 408.90 ...description of the non-remote Alaskan shrimp processing subcategory. The...

  1. 40 CFR 408.90 - Applicability; description of the non-remote Alaskan shrimp processing subcategory.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ...description of the non-remote Alaskan shrimp processing subcategory. 408.90 ...SOURCE CATEGORY Non-Remote Alaskan Shrimp Processing Subcategory § 408.90 ...description of the non-remote Alaskan shrimp processing subcategory. The...

  2. 40 CFR 408.90 - Applicability; description of the non-remote Alaskan shrimp processing subcategory.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ...description of the non-remote Alaskan shrimp processing subcategory. 408.90 ...SOURCE CATEGORY Non-Remote Alaskan Shrimp Processing Subcategory § 408.90 ...description of the non-remote Alaskan shrimp processing subcategory. The...

  3. 40 CFR 408.100 - Applicability; description of the remote Alaskan shrimp processing subcategory.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ...Applicability; description of the remote Alaskan shrimp processing subcategory. 408.100...POINT SOURCE CATEGORY Remote Alaskan Shrimp Processing Subcategory § 408.100...Applicability; description of the remote Alaskan shrimp processing subcategory. The...

  4. 50 CFR 622.201 - South Atlantic rock shrimp limited access.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ...2014-10-01 false South Atlantic rock shrimp limited access. 622.201 Section...Atlantic Region § 622.201 South Atlantic rock shrimp limited access. (a) Commercial Vessel Permits for Rock Shrimp (South Atlantic EEZ)....

  5. 50 CFR 622.201 - South Atlantic rock shrimp limited access.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ...2013-10-01 false South Atlantic rock shrimp limited access. 622.201 Section...Atlantic Region § 622.201 South Atlantic rock shrimp limited access. (a) Commercial Vessel Permits for Rock Shrimp (South Atlantic EEZ)....

  6. 75 FR 48724 - Frozen Warmwater Shrimp From Brazil, China, India, Thailand, and Vietnam

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-08-11

    ...Review)] Frozen Warmwater Shrimp From Brazil, China, India, Thailand, and Vietnam...orders on frozen warmwater shrimp from Brazil, China, India, Thailand, and Vietnam...orders on frozen warmwater shrimp from Brazil, China, India, Thailand, and...

  7. 76 FR 18157 - Certain Frozen Warmwater Shrimp From Brazil, India, and Thailand: Notice of Initiation of...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-04-01

    ...Certain Frozen Warmwater Shrimp From Brazil, India, and Thailand: Notice of Initiation...frozen warmwater shrimp (shrimp) from Brazil, India and Thailand. The anniversary...Kate Johnson at (202) 482-4929 (Brazil), Henry Almond at (202)...

  8. 75 FR 1078 - Frozen Warmwater Shrimp From Brazil, China, India, Thailand, and Vietnam

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-01-08

    ...Review)] Frozen Warmwater Shrimp From Brazil, China, India, Thailand, and Vietnam...orders on frozen warmwater shrimp from Brazil, China, India, Thailand, and Vietnam...orders on frozen warmwater shrimp from Brazil, China, India, Thailand, and...

  9. 75 FR 22424 - Frozen Warmwater Shrimp From Brazil, China, India, Thailand, and Vietnam

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-04-28

    ...Review)] Frozen Warmwater Shrimp From Brazil, China, India, Thailand, and Vietnam...orders on frozen warmwater shrimp from Brazil, China, India, Thailand, and Vietnam...orders on frozen warmwater shrimp from Brazil, China, India, Thailand, and...

  10. 75 FR 57501 - Frozen Warmwater Shrimp From Brazil, China, India, Thailand, and Vietnam

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-09-21

    ...Review)] Frozen Warmwater Shrimp From Brazil, China, India, Thailand, and Vietnam...orders on frozen warmwater shrimp from Brazil, China, India, Thailand, and Vietnam...orders on frozen warmwater shrimp from Brazil, China, India, Thailand, and...

  11. 75 FR 17693 - Certain Frozen Warmwater Shrimp from Brazil, India, and Thailand: Notice of Initiation of...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-04-07

    ...Certain Frozen Warmwater Shrimp from Brazil, India, and Thailand: Notice of Initiation...frozen warmwater shrimp (shrimp) from Brazil, India and Thailand. The anniversary...Rebecca Trainor at (202) 482-4007 (Brazil), Elizabeth Eastwood at (202)...

  12. 75 FR 22370 - Certain Frozen Warmwater Shrimp From Brazil, Ecuador, India, the People's Republic of China...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-04-28

    ...Certain Frozen Warmwater Shrimp From Brazil, Ecuador, India, the People's Republic...of certain frozen warmwater shrimp from Brazil, Ecuador, India, the People's Republic...Frozen and Canned Warmwater Shrimp From Brazil, 69 FR 76910 (December 23,...

  13. 78 FR 15699 - Certain Frozen Warmwater Shrimp From the Socialist Republic of Vietnam: Preliminary Results of...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-03-12

    ...Administration [A-552-802] Certain Frozen Warmwater Shrimp From the Socialist Republic...the antidumping duty order on certain frozen warmwater shrimp from the Socialist Republic...Duty Administrative Review of Certain Frozen Warmwater Shrimp from the Socialist...

  14. 78 FR 33349 - Certain Frozen Warmwater Shrimp From Indonesia: Negative Preliminary Countervailing Duty...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-06-04

    ... International Trade Administration Certain Frozen Warmwater Shrimp From Indonesia: Negative Preliminary... (frozen shrimp) from Indonesia. The period of investigation is January 1, 2011, through December 31, 2011... Shrimp from the Republic of Indonesia,'' dated concurrently with this notice (Preliminary...

  15. 76 FR 18782 - Frozen Warmwater Shrimp From Brazil, China, India, Thailand, and Vietnam

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-04-05

    ...Shrimp From Brazil, China, India, Thailand, and Vietnam Determinations On the basis...shrimp from Brazil, China, India, Thailand, and Vietnam would be likely to lead...shrimp from Brazil, China, India, Thailand, and Vietnam would not be likely...

  16. AURORA BOREALIS - Icebreaking Deep-Sea Drilling Platform and Multi-Purpose Research Vessel

    NASA Astrophysics Data System (ADS)

    Lembke-Jene, L.; Biebow, N.; Kunz-Pirrung, M.; Thiede, J.; Egerton, P.; Azzolini, R.

    2009-04-01

    Future breakthroughs in scientific deep-sea drilling critically depend on our ability to perform field expeditions with state-of-the-art technologies and modern infrastructures. This will require major investments, both in terms of generating new, as well as maintaining and renovating existing infrastructure. Diverse models for science operations are presently projected, also within the context of scientific needs after the current phase of the IODP will come to an end. In spite of its critical role in global climate and tectonic evolution, the Arctic Ocean is one of the most unexplored ocean basins of the world, its geologic and paleo-environmental history remaining largely unknown. Restricted by circulating sea ice, scientific drilling has been slow to arrive in the Arctic Ocean. This lack of data remains and represents one of the largest gaps of information in modern Earth Science. We here report on the finalised technical planning of a new European research icebreaker and deep-sea drilling vessel, the AURORA BOREALIS, designed with an all-season capability of endurance in permanently ice-covered waters. The icebreaker will be able to carry out deep-sea drilling in ice-covered deep-sea basins primarily during the more favorable summer seasons in order to fulfill the needs of the IODP or its eventual successor as a Mission-Specific Platform. AURORA BOREALIS will be the most advanced polar research vessel in the world with a multi-functional role of drilling in deep ocean basins and supporting climate and environmental research and decision support for stakeholder governments within the next 35-40 years. It will feature the highest attainable icebreaker classification, considerably surpassing in performance all currently operating research icebreakers. New technological features to be implemented include a novel hull design and specialized dynamic positioning systems for operations under closed sea-ice cover conditions with up to 2.5 m ice thickness, combined with advanced ice-forecasting support. The vessel is planned to operate routinely without ice management support by additional icebreakers, thus reducing operational costs for scientific drilling in polar regions considerably. Two moon-pools (7x7 m each) will allow routine deployment of Remotely Operated Vehicles (ROV) and Autonomous Underwater Vehicles (AUV) in ice conditions. A dedicated deep-sea drilling rig with full weather protection will enable sampling of the ocean floor in water depths between 100 and 5000 m with more than 1000 m penetration under polar conditions. The modular arrangement of science space with hangars, the possibility to flexibly equip the ship with laboratory or supply containers and with helicopters, addresses the needs of diverse disciplines in marine research. This icebreaker will allow to stage long international, interdisciplinary drilling expeditions in the central Arctic. In a long-term perspective, AURORA BOREALIS will also be used to address Antarctic research targets, both in its mode as a regular research and a scientific drilling vessel.

  17. Development of the brine shrimp Artemia is accelerated during spaceflight

    NASA Technical Reports Server (NTRS)

    Spooner, B. S.; Metcalf, J.; DeBell, L.; Paulsen, A.; Noren, W.; Guikema, J. A.

    1994-01-01

    Developmentally arrested brine shrimp cysts have been reactivated during orbital spaceflight on two different Space Shuttle missions (STS-50 and STS-54), and their subsequent development has been compared with that of simultaneously reactivated ground controls. Flight and control brine shrimp do not significantly differ with respect to hatching rates or larval morphology at the scanning and transmission EM levels. A small percentage of the flight larvae had defective nauplier eye development, but the observation was not statistically significant. However, in three different experiments on two different flights, involving a total of 232 larvae that developed in space, a highly significant difference in degree of flight to control development was found. By as early as 2.25 days after reactivation of development, spaceflight brine shrimp were accelerated, by a full instar, over ground control brine shrimp. Although developing more rapidly, flight shrimp grew as long as control shrimp at each developmental instar or stage.

  18. Shrimp viral diseases, import risk assessment and international trade.

    PubMed

    Karunasagar, Iddya; Ababouch, Lahsen

    2012-09-01

    Shrimp is an important commodity in international trade accounting for 15 % in terms of value of internationally traded seafood products which reached $102.00 billion in 2008. Aquaculture contributes to over 50 % of global shrimp production. One of the major constraints faced by shrimp aquaculture is the loss due to viral diseases like white spot syndrome, yellow head disease, and Taura syndrome. There are several examples of global spread of shrimp diseases due to importation of live shrimp for aquaculture. Though millions of tonnes of frozen or processed shrimp have been traded internationally during the last two decades despite prevalence of viral diseases in shrimp producing areas in Asia and the Americas, there is no evidence of diseases having been transmitted through shrimp imported for human consumption. The guidelines developed by the World Animal Health Organisation for movement of live animals for aquaculture, frozen crustaceans for human consumption, and the regulations implemented by some shrimp importing regions in the world are reviewed. PMID:23997438

  19. Tracking down R Coronae Borealis stars from their mid-infrared WISE colours

    E-print Network

    Tisserand, Patrick

    2011-01-01

    R Coronae Borealis stars (RCBs) are hydrogen-deficient and carbon-rich supergiant stars. They are very rare, as only $\\sim50$ are actually known in our Galaxy. Interestingly, RCBs are strongly suspected to be the evolved merger product of two white dwarfs and could therefore be an important tool to understand Supernovae type Ia in the double degenerate scenario. Constraints on the spatial distribution and the formation rate of such stars are needed to picture their origin and test it in the context of actual population synthesis results. To do so, it is crucial to increase significantly the number of known RCBs. With an absolute magnitude $\\mathrm{M_V\\sim-5}$ and a bright/hot circumstellar shell made of amorphous carbon grains, RCBs are really distinctive stars. Mono-epoch mid-infrared data can help us to discriminate RCBs among other dust-producing stars. The aim is to produce from the WISE and 2MASS infrared catalogues a new catalogue of reasonable size, enriched with RCB stars. Colour-Colour cuts used on a...

  20. R CORONAE BOREALIS STARS IN M31 FROM THE PALOMAR TRANSIENT FACTORY

    SciTech Connect

    Tang Sumin; Bildsten, Lars; Cao Yi; Bellm, Eric; Kulkarni, Shrinivas R.; Levitan, David; Prince, Thomas A.; Sesar, Branimir; Nugent, Peter; Laher, Russ; Surace, Jason; Masci, Frank; Ofek, Eran O.

    2013-04-20

    We report the discovery of R Coronae Borealis (RCB) stars in the Andromeda galaxy (M31) using the Palomar Transient Factory (PTF). RCB stars are rare hydrogen-deficient, carbon-rich supergiant variables, most likely the merger products of two white dwarfs. These new RCBs, including two confirmed ones and two candidates, are the first to be found beyond the Milky Way and the Magellanic Clouds. All of M31 RCBs showed >1.5 mag irregular declines over timescales of weeks to months. Due to the limiting magnitude of our data (R Almost-Equal-To 21-22 mag), these RCB stars have R Almost-Equal-To 19.5-20.5 mag at maximum light, corresponding to M{sub R} = -4 to -5, making them some of the most luminous RCBs known. Spectra of two objects show that they are warm RCBs, similar to the Milky Way RCBs RY Sgr and V854 Cen. We consider these results, derived from a pilot study of M31 variables, as an important proof-of-concept for the study of rare bright variables in nearby galaxies with the PTF or other synoptic surveys.

  1. Long-term Spatial and Temporal Variations of Aurora Borealis Events in the Period 1700 - 1905

    NASA Astrophysics Data System (ADS)

    Vázquez, M.; Vaquero, J. M.; Gallego, M. C.

    2014-05-01

    Catalogues and other records of aurora-borealis events were used to study the long-term spatial and temporal variation of these phenomena in the period from 1700 to 1905 in the Northern Hemisphere. For this purpose, geographic and geomagnetic coordinates were assigned to approximately 27 000 auroral events with more than 80 000 observations. They were analyzed separately in three large-scale areas: i) Europe and North Africa, ii) North America, and iii) Asia. There was a clear need to fill some gaps existing in the records so as to have a reliable proxy of solar activity, especially during the 18th century. In order to enhance the long-term variability, an 11-year smoothing window was applied to the data. Variations in the cumulative numbers of auroral events with latitude (in both geographic and geomagnetic coordinates) were used to discriminate between the two main solar sources: coronal mass ejections and high-speed streams from coronal holes. The characteristics of the associated auroras correlate differently with the solar-activity cycle.

  2. A New Threat to Honey Bees, the Parasitic Phorid Fly Apocephalus borealis

    PubMed Central

    Core, Andrew; Runckel, Charles; Ivers, Jonathan; Quock, Christopher; Siapno, Travis; DeNault, Seraphina; Brown, Brian; DeRisi, Joseph; Smith, Christopher D.; Hafernik, John

    2012-01-01

    Honey bee colonies are subject to numerous pathogens and parasites. Interaction among multiple pathogens and parasites is the proposed cause for Colony Collapse Disorder (CCD), a syndrome characterized by worker bees abandoning their hive. Here we provide the first documentation that the phorid fly Apocephalus borealis, previously known to parasitize bumble bees, also infects and eventually kills honey bees and may pose an emerging threat to North American apiculture. Parasitized honey bees show hive abandonment behavior, leaving their hives at night and dying shortly thereafter. On average, seven days later up to 13 phorid larvae emerge from each dead bee and pupate away from the bee. Using DNA barcoding, we confirmed that phorids that emerged from honey bees and bumble bees were the same species. Microarray analyses of honey bees from infected hives revealed that these bees are often infected with deformed wing virus and Nosema ceranae. Larvae and adult phorids also tested positive for these pathogens, implicating the fly as a potential vector or reservoir of these honey bee pathogens. Phorid parasitism may affect hive viability since 77% of sites sampled in the San Francisco Bay Area were infected by the fly and microarray analyses detected phorids in commercial hives in South Dakota and California's Central Valley. Understanding details of phorid infection may shed light on similar hive abandonment behaviors seen in CCD. PMID:22235317

  3. A new threat to honey bees, the parasitic phorid fly Apocephalus borealis.

    PubMed

    Core, Andrew; Runckel, Charles; Ivers, Jonathan; Quock, Christopher; Siapno, Travis; Denault, Seraphina; Brown, Brian; Derisi, Joseph; Smith, Christopher D; Hafernik, John

    2012-01-01

    Honey bee colonies are subject to numerous pathogens and parasites. Interaction among multiple pathogens and parasites is the proposed cause for Colony Collapse Disorder (CCD), a syndrome characterized by worker bees abandoning their hive. Here we provide the first documentation that the phorid fly Apocephalus borealis, previously known to parasitize bumble bees, also infects and eventually kills honey bees and may pose an emerging threat to North American apiculture. Parasitized honey bees show hive abandonment behavior, leaving their hives at night and dying shortly thereafter. On average, seven days later up to 13 phorid larvae emerge from each dead bee and pupate away from the bee. Using DNA barcoding, we confirmed that phorids that emerged from honey bees and bumble bees were the same species. Microarray analyses of honey bees from infected hives revealed that these bees are often infected with deformed wing virus and Nosema ceranae. Larvae and adult phorids also tested positive for these pathogens, implicating the fly as a potential vector or reservoir of these honey bee pathogens. Phorid parasitism may affect hive viability since 77% of sites sampled in the San Francisco Bay Area were infected by the fly and microarray analyses detected phorids in commercial hives in South Dakota and California's Central Valley. Understanding details of phorid infection may shed light on similar hive abandonment behaviors seen in CCD. PMID:22235317

  4. Population structure of red-cockaded woodpeckers (Picoides borealis) in south Florida: RAPDs revisited

    USGS Publications Warehouse

    Haig, Susan M.; Bowman, R.; Mullins, Thomas D.

    1996-01-01

    Six south Florida populations of the endangered red-cockaded woodpecker (Picoides borealis) were sampled to examine genetic diversity and population structure in the southernmost portion of the species' range relative to 14 previously sampled populations from throughout the species range. Random amplified polymorphic DNA (RAPD) analyses were used to evaluate the populations (n= 161 individuals, 13 primers, one band/primer). Results suggested that south Florida populations have significant among-population genetic differentiation (FST= 0.17, P < 0.000), although gene flow may be adequate to offset drift (Nm= 1.26). Comparison of Florida populations with others sampled indicated differentiation was less in Florida (FST for all populations = 0.21). Cluster analyses of all 20 populations did not reflect complete geographical predictions, although clustering of distant populations resulted in a significant correlation between genetic distance and geographical distance. Overall, results suggest populations in south Florida, similar to the remainder of the species, have low genetic diversity and high population fragmentation. Exact clustering of distant populations supports the ability of RAPDs to differentiate populations accurately. Our results further support past management recommendations that translocations of birds among geographically proximate populations is preferable to movement of birds between distant populations.

  5. R Coronae Borealis Stars are Viable Factories of Pre-solar Grains

    E-print Network

    Karakas, Amanda I; Hampel, Melanie

    2015-01-01

    We present a new theoretical estimate for the birthrate of R Coronae Borealis (RCB) stars that is in agreement with recent observational data. We find the current Galactic birthrate of RCB stars to be $\\approx$ 25% of the Galactic rate of Type Ia supernovae, assuming that RCB stars are formed through the merger of carbon-oxygen and helium-rich white dwarfs. Our new RCB birthrate ($1.8 \\times 10^{-3}$ yr$^{-1}$) is a factor of 10 lower than previous theoretical estimates. This results in roughly 180--540 RCB stars in the Galaxy, depending on the RCB lifetime. From the theoretical and observational estimates, we calculate the total dust production from RCB stars and compare this rate to dust production from novae and born-again asymptotic giant branch (AGB) stars. We find that the amount of dust produced by RCB stars is comparable to the amounts produced by novae or born-again post-AGB stars, indicating that these merger objects are a viable source of carbonaceous pre-solar grains in the Galaxy. There are graph...

  6. Mictomys borealis (northern bog lemming) and the Wisconsin paleoecology of the east-central Great Basin

    NASA Astrophysics Data System (ADS)

    Mead, Jim I.; Bell, Christopher J.; Murray, Lyndon K.

    1992-03-01

    Teeth of northern bog lemming, Mictomys borealis, are reported from Cathedral and Smith Creek caves and represent the first Wisconsin remains of the genus from the Great Basin. Specimens from Cathedral Cave, Snake Range, are associated with U-series ages of 24,000 to 15,000 yr B.P. Previous work with pollen and packrat middens, dating to the same age as the Mictomys, indicate that Smith Creek Canyon contained a riparian, locally mesic community, including Picea engelmannii (spruce), Betula sp. (birch), Cercocarpus sp. (mountain mahogany), and Artemisia sp. (sagebrush) among other species. Exposed canyon slopes and the adjacent valley apparently contained a more xeric steppe community including sagebrush and Chenopodiineae species; rocky outcrop permitted Pinus flexilis (limber pine) and P. longaeva (bristlecone pine) to grow adjacent to Lake Bonneville or low in the canyon. The region apparently experienced a dry climate (not necessarily drier than today); however, Smith Creek Canyon was fed by glacial meltwater from Mt. Moriah. The northern bog lemming probably lived only in the riparian community and possibly on the north-facing slope below Cathedral Cave. Few canyons of the Snake Range would have had the unusually mesic conditions found in Smith Creek Canyon.

  7. R Coronae Borealis Stars Are Viable Factories of Pre-solar Grains

    NASA Astrophysics Data System (ADS)

    Karakas, Amanda I.; Ruiter, Ashley J.; Hampel, Melanie

    2015-08-01

    We present a new theoretical estimate for the birthrate of R Coronae Borealis (RCB) stars that is in agreement with recent observational data. We find the current Galactic birthrate of RCB stars to be ?25% of the Galactic rate of Type Ia supernovae, assuming that RCB stars are formed through the merger of carbon-oxygen and helium-rich white dwarfs. Our new RCB birthrate (1.8 × 10-3 yr-1) is a factor of 10 lower than previous theoretical estimates. This results in roughly 180-540 RCB stars in the Galaxy, depending on the RCB lifetime. From the theoretical and observational estimates, we calculate the total dust production from RCB stars and compare this rate to dust production from novae and born-again asymptotic giant branch (AGB) stars. We find that the amount of dust produced by RCB stars is comparable to the amounts produced by novae or born-again post-AGB stars, indicating that these merger objects are a viable source of carbonaceous pre-solar grains in the Galaxy. There are graphite grains with carbon and oxygen isotopic ratios consistent with the observed composition of RCB stars, adding weight to the suggestion that these rare objects are a source of stardust grains.

  8. Impact Basin Formation on Mars: From Borealis to the Late Heavy Bombardment

    NASA Astrophysics Data System (ADS)

    Davies, Erik; Stewart, Sarah; Lillis, Robert

    2015-06-01

    The Martian crust preserves the imprint of 20 large (>1000 km) impact basins and a global dichotomy that is hypothesized to have formed via a planetary-scale impact event. The impact basin record spans the end of the Martian dynamo magnetic field, and the youngest impact basins have the cleanest shock-demagnetization signatures. The youngest basins are also the least degraded and have more pronounced crustal thinning within the structure compared to older basins. Here, we consider the mechanics of impact basin formation under a range of crustal thickness and thermal gradients on Mars. This work will help constrain the possible impact energies and impactor sizes that produced the observed basins. Basin formation is modeled using the CTH shock physics code with a fixed central gravity field in 2D and self-gravity in 3D. Previous numerical models of a Borealis-scale impact did not include the crust or a rock rheology model, however, some important differences arise from the inclusion of strength. Heating of the mantle is significantly higher in the impacted hemisphere when strength is included. Our simulations with material strength provide new insights about the viability of the impact formation hypothesis for the global crustal dichotomy. Support Provided by NASA.

  9. Dead shrimp blues: a global assessment of extinction risk in freshwater shrimps (Crustacea: Decapoda: Caridea).

    PubMed

    De Grave, Sammy; Smith, Kevin G; Adeler, Nils A; Allen, Dave J; Alvarez, Fernando; Anker, Arthur; Cai, Yixiong; Carrizo, Savrina F; Klotz, Werner; Mantelatto, Fernando L; Page, Timothy J; Shy, Jhy-Yun; Villalobos, José Luis; Wowor, Daisy

    2015-01-01

    We present the first global assessment of extinction risk for a major group of freshwater invertebrates, caridean shrimps. The risk of extinction for all 763 species was assessed using the IUCN Red List criteria that include geographic ranges, habitats, ecology and past and present threats. The Indo-Malayan region holds over half of global species diversity, with a peak in Indo-China and southern China. Shrimps primarily inhabit flowing water; however, a significant subterranean component is present, which is more threatened than the surface fauna. Two species are extinct with a further 10 possibly extinct, and almost one third of species are either threatened or Near Threatened (NT). Threats to freshwater shrimps include agricultural and urban pollution impact over two-thirds of threatened and NT species. Invasive species and climate change have the greatest overall impact of all threats (based on combined timing, scope and severity of threats). PMID:25807292

  10. Dead Shrimp Blues: A Global Assessment of Extinction Risk in Freshwater Shrimps (Crustacea: Decapoda: Caridea)

    PubMed Central

    2015-01-01

    We present the first global assessment of extinction risk for a major group of freshwater invertebrates, caridean shrimps. The risk of extinction for all 763 species was assessed using the IUCN Red List criteria that include geographic ranges, habitats, ecology and past and present threats. The Indo-Malayan region holds over half of global species diversity, with a peak in Indo-China and southern China. Shrimps primarily inhabit flowing water; however, a significant subterranean component is present, which is more threatened than the surface fauna. Two species are extinct with a further 10 possibly extinct, and almost one third of species are either threatened or Near Threatened (NT). Threats to freshwater shrimps include agricultural and urban pollution impact over two-thirds of threatened and NT species. Invasive species and climate change have the greatest overall impact of all threats (based on combined timing, scope and severity of threats). PMID:25807292

  11. Abundance of Ohio shrimp (Macrobrachium ohione) and Glass shrimp (Palaemonetes kadiakensis) in the unimpounded Upper Mississippi River

    USGS Publications Warehouse

    Barko, V.A.; Hrabik, R.A.

    2004-01-01

    Large rivers of the United States have been altered by construction and maintenance of navigation channels, which has resulted in habitat loss and degradation. Using 7 y of Long Term Resource Monitoring Program data collected from the unimpounded upper Mississippi River, we investigated Ohio and Glass Shrimp abundance collected from four physical habitats of the unimpounded upper Mississippi River: main channel border, main channel border with wing dike, open side channel and closed side channel. Our objective was to assess associations between Ohio and Glass Shrimp abundance, environmental measurements and the four habitats to better understand the ecology of these species in a channelized river system. Ohio Shrimp were most abundant in the open side channels, while Glass Shrimp were most abundant in the main channel border wing dike habitat. Thirty-two percent of the variance in Glass Shrimp abundance was explained by year 1995, year 1998, water temperature, depth of gear deployment, Secchi disk transparency and river elevation. Approximately 8% of variation in Ohio Shrimp abundance was explained by Secchi disk transparency. Catch-per-unit-effort (CPUE) was greatest in 1998 for Glass Shrimp but lowest in 1997. Conversely, CPUE was greatest in 1996 for Ohio Shrimp and lowest in 2000. Both species exhibited inter-annual variability in CPUE. Long-term impacts of river modifications on aquatic invertebrates have not been well documented in many large, river systems and warrants further study. The findings from this study provide ecological information on Glass and Ohio Shrimp in a channelized river system.

  12. MFR PAPER 1169 Exploratory Shrimp Trawling

    E-print Network

    effort during the fir t four crui e. was conducted with 41 -foot (12 .5-m) headrope 4- eam flat shrimp ranged from 4.7 to 31 .0 pounds (2.1 to 14.1 kg) per hour (heads-on weight) with a single 41-foot (12.5-m the first crui e. as was a 71-foot headrope fish trawl (Greenwood. 1958). TraV\\ling survey conducted during

  13. Closed recirculating system for shrimp-mollusk polyculture

    NASA Astrophysics Data System (ADS)

    Wu, Xiongfei; Zhao, Zhidong; Li, Deshang; Chang, Kangmei; Tong, Zhuanshang; Si, Liegang; Xu, Kaichong; Ge, Bailin

    2005-12-01

    This paper deals with a new system of aquaculture, i.e., a closed recirculating system for shrimp-mollusk polyculture. The culture system consisted of several shrimp ponds, a mollusk water-purifying pond and a reservoir. During the production cycle, water circulated between the shrimp and mollusk ponds, and the reservoir compensated for water loss from seepage and evaporation. Constricted tagelus, Sinonovacula constricta, was selected as the cultured mollusk, and Pacific white shrimp, Litopenaeus vannamei, as the cultured shrimp. The main managing measures during the production cycle were: setting and using the aerators; introducting the probiotic products timely into the shrimp ponds; adopting a “pen-closing” method for controlling shrimp viral epidemics; setting the flow diversion barriers in the mollusk pond to keep the circulating water flowing through the pond along a sine-like curve and serve as substrate for biofilm; no direct feeding was necessary for the cultured mollusk until the co-cultured shrimp was harvested; natural foods in the water from the shrimp ponds was used for their foods. Two sets of the system were used in the experiment in 2002 and satisfactory results were achieved. The average yield of the shrimp was 11 943.5 kg/hm2, and that of the mollusk was 16 965 kg/hm2. After converting the mollusk yield into shrimp yield at their market price ratio, the food coefficient of the entire system averaged at as low as 0.81. The water quality in the ponds was maintained at a desirable level and no viral epidemics were discovered during the production cycle.

  14. Pink shrimp as an indicator for restoration of everglades ecosystems

    USGS Publications Warehouse

    Browder, J.A.; Robblee, M.B.

    2009-01-01

    The pink shrimp, Farfantepenaeus duorarum, familiar to most Floridians as either food or bait shrimp, is ubiquitous in South Florida coastal and offshore waters and is proposed as an indicator for assessing restoration of South Florida's southern estuaries: Florida Bay, Biscayne Bay, and the mangrove estuaries of the lower southwest coast. Relationships between pink shrimp and salinity have been determined in both field and laboratory studies. Salinity is directly relevant to restoration because the salinity regimes of South Florida estuaries, critical nursery habitat for the pink shrimp, will be altered by changes in the quantity, timing, and distribution of freshwater inflow planned as part of the Comprehensive Everglades Restoration Project (CERP). Here we suggest performance measures based on pink shrimp density (number per square meter) in the estuaries and propose a restoration assessment and scoring scheme using these performance measures that can readily be communicated to managers, policy makers, and the interested public. The pink shrimp is an appropriate restoration indicator because of its ecological as well as its economic importance and also because scientific interest in pink shrimp in South Florida has produced a wealth of information about the species and relatively long time series of data on both juveniles in estuarine nursery habitats and adults on the fishing grounds. We suggest research needs for improving the pink shrimp performance measure.

  15. Shrimp monitor/locator for conservation of fuel. Final report

    SciTech Connect

    Not Available

    1980-01-01

    A demonstration project of a new type Shrimp Detector/Monitor has been completed. The test project proved the efficiency of the Shrimp Monitor/Detector in detecting shrimp, in identifying the number and size, in real time, but indicated that improvement could be effected which would enhance the operation. Data obtained from the test cruises indicate significant savings in diesel fuel will occur for those trawlers using the Shrimp Monitor/Detector in place of the usual trynet operation; 25% savings for the series model number 400, (the prototype tested) and expected 35%+ if the advanced series model number 500 were used. Fabrication and operational costs for the Shrimp Monitor/Detector are reasonable and well within the financial abilities of the usual large offshore trawler. Research and testing during this program resulted in the design of an advanced model incorporating significant improvements, and fabrication was commenced but the extra cost involved beyond the set value of this contract made the further experiments non-viable. Recommendations have been submitted for an extended program to fabricate and test the advanced model series number 500 which may be of more value and interest, market use, to the operating offshore shrimp trawlers. A marketing/sales program will be instituted to place the Shrimp Monitor/Detector in the commercial area serving the shrimp fleet.

  16. 21 CFR 102.55 - Nonstandardized breaded composite shrimp units.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 21 Food and Drugs 2 2010-04-01 2010-04-01 false Nonstandardized breaded composite shrimp units. 102.55 Section 102.55 Food and Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN... for Specific Nonstandardized Foods § 102.55 Nonstandardized breaded composite shrimp units. (a)...

  17. CUTICULAR LESIONS INDUCED IN GRASS SHRIMP EXPOSED TO HEXAVALENT CHROMIUM

    EPA Science Inventory

    Adult grass shrimp were exposed to four concentrations (0.5, 1.0, 2.0 and 4.0 ppm) of hexavalent chromium for 38 days. At the end of the exposure period, over 50% of the surviving shrimp possessed cuticular lesions that had many of the gross characteristics of 'shell disease.' Th...

  18. Job Satisfaction in the Shrimp Trawl Fisheries of Chennai, India

    ERIC Educational Resources Information Center

    Bavinck, Maarten

    2012-01-01

    Shrimp trawling represents an important fishing metier in South India, generating high levels of employment and economic value. It is also a contested metier, ostensibly contributing to environmental degradation and social inequality. This paper investigates the job satisfaction of crew members (captains and workers) on board the shrimp trawlers…

  19. Job Satisfaction in the Shrimp Trawl Fisheries of Vietnam

    ERIC Educational Resources Information Center

    Sinh, Le Xuan

    2012-01-01

    This paper investigates the job satisfaction of small-scale shrimp trawl fishers in the vicinity of Camau National Park in southern Vietnam. The research sample consisted of 77 fishers who belong to a growing population of shrimp fishers in the region. The results suggest that 60% would change their fishing metier, 78% would leave fishing for…

  20. 40 CFR 797.1950 - Mysid shrimp chronic toxicity test.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 40 Protection of Environment 33 2013-07-01 2013-07-01 false Mysid shrimp chronic toxicity test. 797.1950 Section 797.1950 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) TOXIC SUBSTANCES CONTROL ACT (CONTINUED) ENVIRONMENTAL EFFECTS TESTING GUIDELINES Aquatic Guidelines § 797.1950 Mysid shrimp chronic toxicity test....

  1. Alaska 's shrimp landings have increased 40-fold in

    E-print Network

    or the central Alaska fishery led to concern among IlKal fishermen and processor, ahout the possible depletion Wrangell and Petersburg. T he shrimp fishing began in central Alaska in the late fifties, but the initial. F ull-scale shrimp operation in central Alaska be- gan in 1959, when a catch of 2.9 million Table 1

  2. 78 FR 9024 - Sea Turtle Conservation; Shrimp Trawling Requirements

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-02-07

    ...Administration 50 CFR Part 223 RIN 0648-BC10 Sea Turtle Conservation; Shrimp Trawling Requirements...butterfly trawls) rigged for fishing to use turtle excluder devices (TEDs) in their nets...Incidental Bycatch and Mortality of Sea Turtles in the Southeastern U.S. Shrimp...

  3. 77 FR 27411 - Sea Turtle Conservation; Shrimp Trawling Requirements

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-05-10

    ...120328230-1019-01] RIN 0648-BC10 Sea Turtle Conservation; Shrimp Trawling Requirements...butterfly trawls) rigged for fishing to use turtle excluder devices (TEDs) in their nets...incidental bycatch and mortality of sea turtles in the southeastern U.S. shrimp...

  4. JOUSEHOLD CONSUMER PREFERENCE ~EADED SHRIMP& BREADED FISH STICKS

    E-print Network

    JOUSEHOLD CONSUMER PREFERENCE for ~EADED SHRIMP& BREADED FISH STICKS PART 2 SUMMARY by FARM. D. C. September 1955 HOUSEHOLD CONSUMER PREFERENCES FOR BREADED SERIMP AND BREADm FISH STICKS Part 2 Section Branch of Commercial Fisheries #12;Introduction · . Summary··· Breaded Shrimp Consumption

  5. Sanitation Guidelines for the Breaded-Shrimp Industry

    E-print Network

    Sanitation Guidelines for the Breaded-Shrimp Industry UNITED STATES DEPARTMENT OF THE INTERIOR FISH for the Breaded-Shrimp Industry By JOE P. CLEM and E. SPENCER GARRETT Circular 308 Washington, D.C. November 1968 area 11 Peeling and deveining area 11 Breading area 11 Packing area 12 Plant personnel 12 Health 12

  6. Biology, genome organization and evolution of parvoviruses in marine shrimp

    Technology Transfer Automated Retrieval System (TEKTRAN)

    A number of parvoviruses are now know to infect marine shrimp, and these viruses alone or in combination with other viruses have the potential to cause major losses in shrimp aquaculture globally. This review provides a comprehensive overview of the biology, genome organization, gene expression, and...

  7. Characterization of Sterol Oxidation Products in Two Breaded Shrimp Products

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Two breaded shrimp products were examined for the changes in cholesterol, phytosterols, and fatty acids that occurred during cooking. The products were analyzed by gas chromatography (GC) in the raw, baked, and fried states after separation into breading and shrimp components. Cholesterol, campest...

  8. volcanic islands contain cavernicolous shrimp (18), indicating that habitats oth-

    E-print Network

    Asher, Sanford A.

    volcanic islands contain cavernicolous shrimp (18), indicating that habitats oth- er than caves can and a new order of peracarid Crustacea from Bermuda, and a new family of shrimps from the Caicos Islands. 2 Islands, are widely dispersed by as yet unknown mechanisms. 3. D. C. Culver, Cave Life: Evolution

  9. THE UNITED STATES SHRIMP FISHERY OFF NORTHEASTERN SOUTH AMERICA (1972-74)1

    E-print Network

    THE UNITED STATES SHRIMP FISHERY OFF NORTHEASTERN SOUTH AMERICA (1972-74)1 ALBERT C. JONES AND ALEXANDER DRAGOVICH2 ABSTRACT The Guianll&-Brazil shrimp fishery ofT the northeastern coast ofSouth America is supported by four principal species-pink-spotted shrimp, Penaeus brasiliensis; brown shrimp, P. subtilis

  10. The NMFS laboratory in Miami is engaged in studies of the shrimp

    E-print Network

    The NMFS laboratory in Miami is engaged in studies of the shrimp fisheries off Mexico, in the Caribbea n, and off South America. Shrimp Research Program at Southeast Fisheries Center Shrimp research at the utheast Fi heries Center, Miami, concerns shrimp stocks off foreign coasts. The United States ha important

  11. Natronococcus jeotgali sp. nov., a halophilic archaeon isolated from shrimp jeotgal, a traditional

    E-print Network

    Bae, Jin-Woo

    Natronococcus jeotgali sp. nov., a halophilic archaeon isolated from shrimp jeotgal, a traditional Natronococcus was isolated from shrimp jeotgal, a traditional fermented food from Korea. Colonies of this strain ). Shrimp jeotgal, a traditional fermented food from Korea, is made by combining fresh, tiny shrimps

  12. Analysis of impulsive biological noise due to snapping shrimp as a point process in time

    E-print Network

    Analysis of impulsive biological noise due to snapping shrimp as a point process in time Matthew W-- Impulsive biological noise produced by snapping shrimp provides an important contribution to the ambient of shrimp noise to reduce its impact on sonar and underwater acoustic telemetry systems. Shrimp snaps

  13. Products and Markets for Small Louisiana Shrimp PERRY W. PAWLYK and KENNETH J. ROBERTS

    E-print Network

    Products and Markets for Small Louisiana Shrimp PERRY W. PAWLYK and KENNETH J. ROBERTS Introduction The Louisiana shrimp industry is undergoing a period of change because of increased competition and changes in shrimp markets. Shrimp imports have increased rapidly, rising 180 million pounds between 1976 and 1985

  14. FACTORS INFLUENCING RECAPTURE PATTERNS OF TAGGED PENAEID SHRIMP IN THE WESTERN GULF OF MEXICO

    E-print Network

    FACTORS INFLUENCING RECAPTURE PATTERNS OF TAGGED PENAEID SHRIMP IN THE WESTERN GULF OF MEXICO PETER Movements of brown shrimp, PenlUllUl aztec1ul, and pink shrimp, P. dltorarum, off the adjacent states ofTexas (USA) and Tamaulipas (Mexico) in the western Gulfof Mexico were examined by releasing tagged shrimp

  15. 50 CFR 622.201 - South Atlantic rock shrimp limited access.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 50 Wildlife and Fisheries 12 2013-10-01 2013-10-01 false South Atlantic rock shrimp limited access... SOUTH ATLANTIC Shrimp Fishery of the South Atlantic Region § 622.201 South Atlantic rock shrimp limited access. (a) Commercial Vessel Permits for Rock Shrimp (South Atlantic EEZ). For a person aboard a...

  16. 50 CFR 622.201 - South Atlantic rock shrimp limited access.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 50 Wildlife and Fisheries 12 2014-10-01 2014-10-01 false South Atlantic rock shrimp limited access... SOUTH ATLANTIC Shrimp Fishery of the South Atlantic Region § 622.201 South Atlantic rock shrimp limited access. (a) Commercial Vessel Permits for Rock Shrimp (South Atlantic EEZ). For a person aboard a...

  17. 50 CFR 622.19 - South Atlantic rock shrimp limited access off Georgia and Florida.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 50 Wildlife and Fisheries 12 2012-10-01 2012-10-01 false South Atlantic rock shrimp limited access... CARIBBEAN, GULF, AND SOUTH ATLANTIC Effort Limitations § 622.19 South Atlantic rock shrimp limited access... for rock shrimp in the South Atlantic EEZ off Georgia or off Florida or possess rock shrimp in or...

  18. 50 CFR 622.19 - South Atlantic rock shrimp limited access off Georgia and Florida.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 50 Wildlife and Fisheries 10 2011-10-01 2011-10-01 false South Atlantic rock shrimp limited access... CARIBBEAN, GULF, AND SOUTH ATLANTIC Effort Limitations § 622.19 South Atlantic rock shrimp limited access... for rock shrimp in the South Atlantic EEZ off Georgia or off Florida or possess rock shrimp in or...

  19. 50 CFR 622.19 - South Atlantic rock shrimp limited access off Georgia and Florida.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 50 Wildlife and Fisheries 8 2010-10-01 2010-10-01 false South Atlantic rock shrimp limited access... CARIBBEAN, GULF, AND SOUTH ATLANTIC Effort Limitations § 622.19 South Atlantic rock shrimp limited access... for rock shrimp in the South Atlantic EEZ off Georgia or off Florida or possess rock shrimp in or...

  20. CO-OCCURRENCE OF WHITE SHRIMP, PENAEUS VANNAMEI, MORTALITIES AND MICROCYSTIN TOXIN IN A SOUTHEASTERN USA SHRIMP FACILITY

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Various freshwater and marine algal toxins are known to affect plants, fishes, mammals, and invertebrates. During recent mortality events in Texas white shrimp aquaculture ponds, water and shrimp tissue samples were analyzed for cyanobacterial toxins and found to contain microcystin-LR. Cyanoprokar...

  1. Suppression of shrimp melanization during white spot syndrome virus infection.

    PubMed

    Sutthangkul, Jantiwan; Amparyup, Piti; Charoensapsri, Walaiporn; Senapin, Saengchan; Phiwsaiya, Kornsunee; Tassanakajon, Anchalee

    2015-03-01

    The melanization cascade, activated by the prophenoloxidase (proPO) system, plays a key role in the production of cytotoxic intermediates, as well as melanin products for microbial sequestration in invertebrates. Here, we show that the proPO system is an important component of the Penaeus monodon shrimp immune defense toward a major viral pathogen, white spot syndrome virus (WSSV). Gene silencing of PmproPO(s) resulted in increased cumulative shrimp mortality after WSSV infection, whereas incubation of WSSV with an in vitro melanization reaction prior to injection into shrimp significantly increased the shrimp survival rate. The hemolymph phenoloxidase (PO) activity of WSSV-infected shrimp was extremely reduced at days 2 and 3 post-injection compared with uninfected shrimp but was fully restored after the addition of exogenous trypsin, suggesting that WSSV probably inhibits the activity of some proteinases in the proPO cascade. Using yeast two-hybrid screening and co-immunoprecipitation assays, the viral protein WSSV453 was found to interact with the proPO-activating enzyme 2 (PmPPAE2) of P. monodon. Gene silencing of WSSV453 showed a significant increase of PO activity in WSSV-infected shrimp, whereas co-silencing of WSSV453 and PmPPAE2 did not, suggesting that silencing of WSSV453 partially restored the PO activity via PmPPAE2 in WSSV-infected shrimp. Moreover, the activation of PO activity in shrimp plasma by PmPPAE2 was significantly decreased by preincubation with recombinant WSSV453. These results suggest that the inhibition of the shrimp proPO system by WSSV partly occurs via the PmPPAE2-inhibiting activity of WSSV453. PMID:25572398

  2. DUST AROUND R CORONAE BOREALIS STARS. I. SPITZER/INFRARED SPECTROGRAPH OBSERVATIONS

    SciTech Connect

    Anibal Garcia-Hernandez, D.; Lambert, David L. E-mail: nkrao@iiap.res.in

    2011-09-20

    Spitzer/infrared spectrograph (IRS) spectra from 5 to 37 {mu}m for a complete sample of 31 R Coronae Borealis stars (RCBs) are presented. These spectra are combined with optical and near-infrared photometry of each RCB at maximum light to compile a spectral energy distribution (SED). The SEDs are fitted with blackbody flux distributions and estimates are made of the ratio of the infrared flux from circumstellar dust to the flux emitted by the star. Comparisons for 29 of the 31 stars are made with the Infrared Astronomical Satellite (IRAS) fluxes from three decades earlier: Spitzer and IRAS fluxes at 12 {mu}m and 25 {mu}m are essentially equal for all but a minority of the sample. For this minority, the IRAS to Spitzer flux ratio exceeds a factor of three. The outliers are suggested to be stars where formation of a dust cloud or dust puff is a rare event. A single puff ejected prior to the IRAS observations may have been reobserved by Spitzer as a cooler puff at a greater distance from the RCB. RCBs which experience more frequent optical declines have, in general, a circumstellar environment containing puffs subtending a larger solid angle at the star and a quasi-constant infrared flux. Yet, the estimated subtended solid angles and the blackbody temperatures of the dust show a systematic evolution to lower solid angles and cooler temperatures in the interval between IRAS and Spitzer. Dust emission by these RCBs and those in the LMC is similar in terms of total 24 {mu}m luminosity and [8.0]-[24.0] color index.

  3. DUST AROUND R CORONAE BOREALIS STARS. II. INFRARED EMISSION FEATURES IN AN H-POOR ENVIRONMENT

    SciTech Connect

    Garcia-Hernandez, D. A.; Lambert, D. L. E-mail: nkrao@iiap.res.in

    2013-08-20

    Residual Spitzer/Infrared Spectrograph spectra for a sample of 31 R Coronae Borealis (RCB) stars are presented and discussed in terms of narrow emission features superimposed on the quasi-blackbody continuous infrared emission. A broad {approx}6-10 {mu}m dust emission complex is seen in the RCBs showing an extreme H-deficiency. A secondary and much weaker {approx}11.5-15 {mu}m broad emission feature is detected in a few RCBs with the strongest {approx}6-10 {mu}m dust complex. The Spitzer infrared spectra reveal for the first time the structure within the {approx}6-10 {mu}m dust complex, showing the presence of strong C-C stretching modes at {approx}6.3 and 8.1 {mu}m as well as of other dust features at {approx}5.9, 6.9, and 7.3 {mu}m, which are attributable to amorphous carbonaceous solids with little or no hydrogen. The few RCBs with only moderate H-deficiencies display the classical ''unidentified infrared bands (UIRs)'' and mid-infrared features from fullerene-related molecules. In general, the characteristics of the RCB infrared emission features are not correlated with the stellar and circumstellar properties, suggesting that the RCB dust features may not be dependent on the present physical conditions around RCB stars. The only exception seems to be the central wavelength of the 6.3 {mu}m feature, which is blueshifted in those RCBs showing also the UIRs, i.e., the RCBs with the smallest H deficiency.

  4. Effects of southern flying squirrels Glaucomys volans on red-cockaded woodpecker Picoides borealis reproductive success

    USGS Publications Warehouse

    Laves, K.S.; Loeb, S.C.

    1999-01-01

    Anecdotal data gathered from many populations suggest that southern flying squirrel (SFS, Glaucomys volans) use of the endangered red-cockaded woodpecker's (RCW, Picoides borealis) nest and roost cavities may negatively affect RCW populations. We conducted a controlled experiment to determine the effects of SFSs on RCW reproductive success. During the 1994 and 1995 breeding seasons, SFSs were removed from 30 RCW clusters and 32 clusters served as controls. SFSs were the most frequently encountered occupants of RCW cavities and used 20-33% of RCW cavities in control and treatment clusters over both years. Treatment groups produced significantly more successful nests (??? 1 fledgling) than control groups in 1994. In 1995 however, there was no difference in the number of successful nests. In both years, RCW groups nesting in treatment clusters produced significantly more fledglings than groups in control clusters in each of four experimental areas, averaging approximately 0.7 additional fledglings per nesting group. Loss of entire clutches or broods, possibly as a result of predation or abandonment, was a major factor limiting reproduction in control groups in 1994. In contrast, differences in partial brood loss appeared to be the cause of differential fledging success in 1995 Usurpation of RCW roost cavities by SFSs may have placed greater energetic demands on RCWs for cavity defence or thermoregulation, thus reducing energy available for reproduction. Our results show that SFS use of RCW cavities during the breeding season has a significant impact on RCWs and that management of RCW populations should include activities that either minimize SFS populations in RCW clusters or limit access of SFSs to RCW cavities.

  5. Stable hydrogen isotopes record the summering grounds of eastern red bats (Lasiurus borealis)

    PubMed Central

    Pylant, Cortney L.; Keller, Stephen R.

    2014-01-01

    Bats face numerous threats associated with global environmental change, including the rapid expansion of wind-energy facilities, emerging infectious disease, and habitat loss. An understanding of the movement and migration patterns of these highly dispersive animals would help reveal how spatially localized the impacts from these threats are likely to be on bat populations, thus aiding in their conservation. Stable hydrogen isotope ratios (?2H) can be used to infer regions where bats have foraged during the summer molt season, thus allowing an assessment of summering location and distance of movement of bats sampled during other times of year. However, a major impediment to the application of ?2H for inference of bat movements is that the relationship between ?2H of bat hair and precipitation tends to be species specific and is still unknown for some key species of conservation concern. We addressed this issue by using geo-referenced museum specimens to calibrate the relationship between ?2H of hair (?2Hhair) and long-term ?2H of growing-season precipitation (?2HGSprecip) at the site of collection for eastern red bats (Lasiurus borealis), one of the main species of bats experiencing large numbers of fatalities at wind-energy facilities in North America. Based on comparison of ?2Hhair and ?2HGSprecip values for males we estimated a period of molt of June 14–August 7. Within this period, male and female red bats exhibited a significant positive relationship between ?2Hhair and ?2HGSprecip. These results establish the relationship between ?2Hhair and ?2HGSprecip for red bats, which is necessary for the use of ?2Hhair to infer the movement and migration patterns of this important species. These results provide a critical resource to conservation biologists working to assess the impacts of environmental change on bat populations. PMID:25337458

  6. An XMM-Newton Study of the Coronae of $?^2$ Coronae Borealis

    E-print Network

    J. A. Suh; M. Audard; M. Guedel; F. B. S. Paerels

    2005-06-10

    (Abridged) We present results of XMM-Newton observations of the RS CVn binary $\\sigma^2$ Coronae Borealis. The RGS and EPIC MOS2 spectra were simultaneously fitted with collisional ionization equilibrium plasma models to determine coronal abundances of various elements. Contrary to the solar first ionization potential (FIP) effect in which elements with a low FIP are overabundant in the corona compared to the solar photosphere, and contrary to the ``inverse'' FIP effect observed in several active RS CVn binaries, coronal abundance ratios in $\\sigma^2$ CrB show a complex pattern as supported by similar findings in the Chandra HETGS analysis of $\\sigma^2$ CrB with a different methodology (Osten et al. 2003). Low-FIP elements ($<10$ eV) have their abundance ratios relative to Fe consistent with the solar photospheric ratios, whereas high-FIP elements have their abundance ratios increase with increasing FIP. We find that the coronal Fe abundance is consistent with the stellar photospheric value, indicating that there is no metal depletion in $\\sigma^2$ CrB. However, we obtain a higher Fe absolute abundance than in Osten et al. (2003). Except for Ar and S, our absolute abundances are about 1.5 times larger than those reported by Osten et al. (2003). However, a comparison of their model with our XMM-Newton data (and vice versa) shows that both models work adequately in general. We find, therefore, no preference for one methodology over the other to derive coronal abundances. Despite the systematic discrepancy in absolute abundances, our abundance ratios are very close to those obtained by Osten et al. (2003). Finally, we confirm the measurement of a low density in \\ion{O}{7} ($< 4 \\times 10^{10}$ cm$^{-3}$), but could not confirm the higher densities measured in spectral lines formed at higher temperatures.

  7. Niche Partitioning of Feather Mites within a Seabird Host, Calonectris borealis

    PubMed Central

    Stefan, Laura M.; Gómez-Díaz, Elena; Elguero, Eric; Proctor, Heather C.; McCoy, Karen D.; González-Solís, Jacob

    2015-01-01

    According to classic niche theory, species can coexist in heterogeneous environments by reducing interspecific competition via niche partitioning, e.g. trophic or spatial partitioning. However, support for the role of competition on niche partitioning remains controversial. Here, we tested for spatial and trophic partitioning in feather mites, a diverse and abundant group of arthropods. We focused on the two dominant mite species, Microspalax brevipes and Zachvatkinia ovata, inhabiting flight feathers of the Cory’s shearwater, Calonectris borealis. We performed mite counts across and within primary and tail feathers on free-living shearwaters breeding on an oceanic island (Gran Canaria, Canary Islands). We then investigated trophic relationships between the two mite species and the host using stable isotope analyses of carbon and nitrogen on mite tissues and potential host food sources. The distribution of the two mite species showed clear spatial segregation among feathers; M. brevipes showed high preference for the central wing primary feathers, whereas Z. ovata was restricted to the two outermost primaries. Morphological differences between M. brevipes and Z. ovata support an adaptive basis for the spatial segregation of the two mite species. However, the two mites overlap in some central primaries and statistical modeling showed that Z. ovata tends to outcompete M. brevipes. Isotopic analyses indicated similar isotopic values for the two mite species and a strong correlation in carbon signatures between mites inhabiting the same individual host suggesting that diet is mainly based on shared host-associated resources. Among the four candidate tissues examined (blood, feather remains, skin remains and preen gland oil), we conclude that the diet is most likely dominated by preen gland oil, while the contribution of exogenous material to mite diets is less marked. Our results indicate that ongoing competition for space and resources plays a central role in structuring feather mite communities. They also illustrate that symbiotic infracommunities are excellent model systems to study trophic ecology, and can improve our understanding of mechanisms of niche differentiation and species coexistence. PMID:26650672

  8. DO R CORONAE BOREALIS STARS FORM FROM DOUBLE WHITE DWARF MERGERS?

    SciTech Connect

    Staff, Jan. E.; Clayton, Geoffrey C.; Tohline, Joel E.; Menon, Athira; Herwig, Falk; Even, Wesley; Fryer, Chris L.; Motl, Patrick M.; Geballe, Tom; Pignatari, Marco

    2012-09-20

    A leading formation scenario for R Coronae Borealis (RCB) stars invokes the merger of degenerate He and CO white dwarfs (WDs) in a binary. The observed ratio of {sup 16}O/{sup 18}O for RCB stars is in the range of 0.3-20 much smaller than the solar value of {approx}500. In this paper, we investigate whether such a low ratio can be obtained in simulations of the merger of a CO and a He WD. We present the results of five three-dimensional hydrodynamic simulations of the merger of a double WD system where the total mass is 0.9 M{sub Sun} and the initial mass ratio (q) varies between 0.5 and 0.99. We identify in simulations with q {approx}< 0.7 a feature around the merged stars where the temperatures and densities are suitable for forming {sup 18}O. However, more {sup 16}O is being dredged up from the C- and O-rich accretor during the merger than the amount of {sup 18}O that is produced. Therefore, on the dynamical timescale over which our hydrodynamics simulation runs, an {sup 16}O/{sup 18}O ratio of {approx}2000 in the 'best' case is found. If the conditions found in the hydrodynamic simulations persist for 10{sup 6} s the oxygen ratio drops to 16 in one case studied, while in a hundred years it drops to {approx}4 in another case studied, consistent with the observed values in RCB stars. Therefore, the merger of two WDs remains a strong candidate for the formation of these enigmatic stars.

  9. DISCOVERY OF BRIGHT GALACTIC R CORONAE BOREALIS AND DY PERSEI VARIABLES: RARE GEMS MINED FROM ACVS

    SciTech Connect

    Miller, A. A.; Richards, J. W.; Bloom, J. S.; Cenko, S. B.; Silverman, J. M.; Starr, D. L.; Stassun, K. G.

    2012-08-20

    We present the results of a machine-learning (ML)-based search for new R Coronae Borealis (RCB) stars and DY Persei-like stars (DYPers) in the Galaxy using cataloged light curves from the All-Sky Automated Survey (ASAS) Catalog of Variable Stars (ACVS). RCB stars-a rare class of hydrogen-deficient carbon-rich supergiants-are of great interest owing to the insights they can provide on the late stages of stellar evolution. DYPers are possibly the low-temperature, low-luminosity analogs to the RCB phenomenon, though additional examples are needed to fully establish this connection. While RCB stars and DYPers are traditionally identified by epochs of extreme dimming that occur without regularity, the ML search framework more fully captures the richness and diversity of their photometric behavior. We demonstrate that our ML method can use newly discovered RCB stars to identify additional candidates within the same data set. Our search yields 15 candidates that we consider likely RCB stars/DYPers: new spectroscopic observations confirm that four of these candidates are RCB stars and four are DYPers. Our discovery of four new DYPers increases the number of known Galactic DYPers from two to six; noteworthy is that one of the new DYPers has a measured parallax and is m Almost-Equal-To 7 mag, making it the brightest known DYPer to date. Future observations of these new DYPers should prove instrumental in establishing the RCB connection. We consider these results, derived from a machine-learned probabilistic classification catalog, as an important proof-of-concept for the efficient discovery of rare sources with time-domain surveys.

  10. Stable hydrogen isotopes record the summering grounds of eastern red bats (Lasiurus borealis).

    PubMed

    Pylant, Cortney L; Nelson, David M; Keller, Stephen R

    2014-01-01

    Bats face numerous threats associated with global environmental change, including the rapid expansion of wind-energy facilities, emerging infectious disease, and habitat loss. An understanding of the movement and migration patterns of these highly dispersive animals would help reveal how spatially localized the impacts from these threats are likely to be on bat populations, thus aiding in their conservation. Stable hydrogen isotope ratios (? (2)H) can be used to infer regions where bats have foraged during the summer molt season, thus allowing an assessment of summering location and distance of movement of bats sampled during other times of year. However, a major impediment to the application of ? (2)H for inference of bat movements is that the relationship between ? (2)H of bat hair and precipitation tends to be species specific and is still unknown for some key species of conservation concern. We addressed this issue by using geo-referenced museum specimens to calibrate the relationship between ? (2)H of hair (? (2)Hhair) and long-term ? (2)H of growing-season precipitation (? (2)HGSprecip) at the site of collection for eastern red bats (Lasiurus borealis), one of the main species of bats experiencing large numbers of fatalities at wind-energy facilities in North America. Based on comparison of ? (2)Hhair and ? (2)HGSprecip values for males we estimated a period of molt of June 14-August 7. Within this period, male and female red bats exhibited a significant positive relationship between ? (2)Hhair and ? (2)HGSprecip. These results establish the relationship between ? (2)Hhair and ? (2)HGSprecip for red bats, which is necessary for the use of ? (2)Hhair to infer the movement and migration patterns of this important species. These results provide a critical resource to conservation biologists working to assess the impacts of environmental change on bat populations. PMID:25337458

  11. THE CIRCUMSTELLAR ENVIRONMENT OF R CORONAE BOREALIS: WHITE DWARF MERGER OR FINAL-HELIUM-SHELL FLASH?

    SciTech Connect

    Clayton, Geoffrey C.; Andrews, J. E.; Sugerman, Ben E. K.; Adam Stanford, S.; Whitney, B. A.; Honor, J.; Babler, B.; Barlow, M. J.; Gordon, K. D.; Bond, Howard E.; Matsuura, M.; Geballe, T. R.; De Marco, O.; Lawson, W. A.; Sibthorpe, B.; Olofsson, G.; Polehampton, E.; Gomez, H. L.; Hargrave, P. C.; Ivison, R. J. E-mail: jandrews@phys.lsu.edu E-mail: stanford@physics.ucdavis.edu E-mail: jhonor@astro.wisc.edu E-mail: mjb@star.ucl.ac.uk; and others

    2011-12-10

    In 2007, R Coronae Borealis (R CrB) went into a historically deep and long decline. In this state, the dust acts like a natural coronagraph at visible wavelengths, allowing faint nebulosity around the star to be seen. Imaging has been obtained from 0.5 to 500 {mu}m with Gemini/GMOS, Hubble Space Telescope/WFPC2, Spitzer/MIPS, and Herschel/SPIRE. Several of the structures around R CrB are cometary globules caused by wind from the star streaming past dense blobs. The estimated dust mass of the knots is consistent with their being responsible for the R CrB declines if they form along the line of sight to the star. In addition, there is a large diffuse shell extending up to 4 pc away from the star containing cool 25 K dust that is detected all the way out to 500 {mu}m. The spectral energy distribution of R CrB can be well fitted by a 150 AU disk surrounded by a very large diffuse envelope which corresponds to the size of the observed nebulosity. The total masses of the disk and envelope are 10{sup -4} and 2 M{sub Sun }, respectively, assuming a gas-to-dust ratio of 100. The evidence pointing toward a white dwarf merger or a final-helium-shell flash origin for R CrB is contradictory. The shell and the cometary knots are consistent with a fossil planetary nebula. Along with the fact that R CrB shows significant lithium in its atmosphere, this supports the final-helium-shell flash. However, the relatively high inferred mass of R CrB and its high fluorine abundance support a white dwarf merger.

  12. Immunization with Hypoallergens of Shrimp Allergen Tropomyosin Inhibits Shrimp Tropomyosin Specific IgE Reactivity

    PubMed Central

    Wai, Christine Y. Y.; Leung, Nicki Y. H.; Ho, Marco H. K.; Gershwin, Laurel J.; Shu, Shang An; Leung, Patrick S. C.; Chu, Ka Hou

    2014-01-01

    Designer proteins deprived of its IgE-binding reactivity are being sought as a regimen for allergen-specific immunotherapy. Although shrimp tropomyosin (Met e 1) has long been identified as the major shellfish allergen, no immunotherapy is currently available. In this study, we aim at identifying the Met e 1 IgE epitopes for construction of hypoallergens and to determine the IgE inhibitory capacity of the hypoallergens. IgE-binding epitopes were defined by three online computational models, ELISA and dot-blot using sera from shrimp allergy patients. Based on the epitope data, two hypoallergenic derivatives were constructed by site-directed mutagenesis (MEM49) and epitope deletion (MED171). Nine regions on Met e 1 were defined as the major IgE-binding epitopes. Both hypoallergens MEM49 and MED171 showed marked reduction in their in vitro reactivity towards IgE from shrimp allergy patients and Met e 1-sensitized mice, as well as considerable decrease in induction of mast cell degranulation as demonstrated in passive cutaneous anaphylaxis assay. Both hypoallergens were able to induce Met e 1-recognizing IgG antibodies in mice, specifically IgG2a antibodies, that strongly inhibited IgE from shrimp allergy subjects and Met e 1-sensitized mice from binding to Met e 1. These results indicate that the two designer hypoallergenic molecules MEM49 and MED171 exhibit desirable preclinical characteristics, including marked reduction in IgE reactivity and allergenicity, as well as ability to induce blocking IgG antibodies. This approach therefore offers promises for development of immunotherapeutic regimen for shrimp tropomyosin allergy. PMID:25365343

  13. Comparative studies on nitrogen budgets of closed shrimp polyculture systems

    NASA Astrophysics Data System (ADS)

    Qi, Zhen-Xiong; Li, De-Shang; Zhang, Man-Ping; Dong, Shuang-Lin

    2001-09-01

    April to October, 1997 comparative studies on the nitrogen budgets of closed shrimp polyculture systems showed that, in all the studied polyculture systems, nitrogen from feeds and fertilizers were the main input items, which comprised 70.7% 83.9% of the total input nitrogen 3.2% 7.4% of which was provided by nitrogen fixation. It was in monoculture enclosures (Y-4, Y-11 and Y-12) that the percentage reached the maximum value. The output nitrogen in harvested products comprised 10.8% 24.6% of total input nitrogen, and the highest percentage, 24.6%, was found in shrimp-fish-tagelus polyculture systems. In shrimp monoculture and shrimp-fish polyculture systems, they were 19.1% and 21.9% respectively. The nitrogen utilization efficiency was different and varied from 12.2% was found in shrimp-tagelus polyculture systems. The lowest, 12.2%, was found in shrimp monoculture systems. All the nitrogen utilization efficiencies in shrimp-fish systems or shrimp-scallop systems seemed to be higher than that of the monoculture system, but they showed little statistical difference. The main outputs of nitrogen were found in sediment mud, and comprised 48.2% 60.8% of the total, input, the lowest percentage was found in shrimp-fish-tagelus polyculture systems, and the highest percentage in shrimp-scallop systems. During the experiment, nitrogen lost through denitrification and ammonia volatilization comprised 1.9% 6. 2%, averaged 2.8%, of the total input, and the loss through seepage comprised 5.9% 8.9% of the total. The estimated nitrogen attached to the enclosure wall comprised 3.7% 13.3% of the total, and was highest in shrimp monoculture systems. Compared with the classic shrimp farming industry, the closed shrimp polyculture systems may improve the nitrogen utilization efficiency, and hence reduce the environmental impacts on coastal waters. The nitrogen discharging rates for all the studied polyculture systems ranged from 3.0% to 6. 0% of total input nitrogen.

  14. MORTALITY RATES IN POPULATIONS OF PINK SHRIMP, PENAEUS DUO-RARUM, ON THE SANIBEL AND TORTUGAS GROUNDS, FLORIDA 1

    E-print Network

    MORTALITY RATES IN POPULATIONS OF PINK SHRIMP, PENAEUS DUO- RARUM, ON THE SANIBEL AND TORTUGAS of commercial shrimps in the Gulf of Mexico. In two experiments, groups of pink shrimp were injected. Marked shrimp were re- captured by commercial shrimp fishermen. Mortality estimates were derived from

  15. On the sound of snapping shrimp

    E-print Network

    Versluis, Michel; von der Heydt, Anna; Lohse, Detlef

    2007-01-01

    Fluid dynamics video: Snapping shrimp produce a snapping sound by an extremely rapid closure of their snapper claw. Our high speed imaging of the claw closure has revealed that the sound is generated by the collapse of a cavitation bubble formed in a fast flowing water jet forced out from the claws during claw closure. The produced sound originates from the cavitation collapse of the bubble. At collapse a short flash of light is emitted, just as in single bubble sonoluminescence. A model based on the Rayleigh-Plesset equation can quantitatively account for the visual and acoustical observations.

  16. Shoreline as a controlling factor in commercial shrimp production

    NASA Technical Reports Server (NTRS)

    Faller, K. H. (principal investigator)

    1978-01-01

    An ecological model was developed that relates marsh detritus export and shrimp production, based on the hypothesis that the shoreline is a controlling factor in the production of shrimp through regulation of detritus export from the marsh. LANDSAT data were used to develop measurements of shoreline length and area of marsh having more than 5.0 km shoreline/sq km for the coast of Louisiana, demonstrating the capability of remote sensing to provide important geographic information. These factors were combined with published tidal ranges and salinities to develop a mathematical model that predicted shrimp production for nine geographic units of the Louisiana coast, as indicated by the long term average commercial shrimp yield. The mathematical model relating these parameters and the shrimp production is consistent with an energy flow model describing the interaction of detritus producing marshlands with shrimp nursery grounds and inshore shrimping areas. The analysis supports the basic hypothesis and further raises the possibility of applications to coastal zone management requirements.

  17. Beyond Symbiosis: Cleaner Shrimp Clean Up in Culture

    PubMed Central

    Militz, Thane A.; Hutson, Kate S.

    2015-01-01

    Cleaner organisms exhibit a remarkable natural behaviour where they consume ectoparasites attached to “client” organisms. While this behaviour can be utilized as a natural method of parasitic disease control (or biocontrol), it is not known whether cleaner organisms can also limit reinfection from parasite eggs and larvae within the environment. Here we show that cleaner shrimp, Lysmata amboinensis, consume eggs and larvae of a harmful monogenean parasite, Neobenedenia sp., in aquaculture. Shrimp consumed parasite eggs under diurnal (63%) and nocturnal (14%) conditions as well as infectious larvae (oncomiracidia) diurnally (26%). Furthermore, we trialled the inclusion of cleaner shrimp for preventative parasite management of ornamental fish, Pseudanthias squamipinnis, and found shrimp reduced oncomiracidia infection success of host fish by half compared to controls (held without shrimp). Fish held without cleaner shrimp exhibited pigmentation changes as a result of infection, possibly indicative of a stress response. These results provide the first empirical evidence that cleaner organisms reduce parasite loads in the environment through non-symbiotic cleaning activities. Our research findings have relevance to aquaculture and the marine ornamental trade, where cleaner shrimp could be applied for prophylaxis and control of ectoparasite infections. PMID:25706952

  18. Beyond symbiosis: cleaner shrimp clean up in culture.

    PubMed

    Militz, Thane A; Hutson, Kate S

    2015-01-01

    Cleaner organisms exhibit a remarkable natural behaviour where they consume ectoparasites attached to "client" organisms. While this behaviour can be utilized as a natural method of parasitic disease control (or biocontrol), it is not known whether cleaner organisms can also limit reinfection from parasite eggs and larvae within the environment. Here we show that cleaner shrimp, Lysmata amboinensis, consume eggs and larvae of a harmful monogenean parasite, Neobenedenia sp., in aquaculture. Shrimp consumed parasite eggs under diurnal (63%) and nocturnal (14%) conditions as well as infectious larvae (oncomiracidia) diurnally (26%). Furthermore, we trialled the inclusion of cleaner shrimp for preventative parasite management of ornamental fish, Pseudanthias squamipinnis, and found shrimp reduced oncomiracidia infection success of host fish by half compared to controls (held without shrimp). Fish held without cleaner shrimp exhibited pigmentation changes as a result of infection, possibly indicative of a stress response. These results provide the first empirical evidence that cleaner organisms reduce parasite loads in the environment through non-symbiotic cleaning activities. Our research findings have relevance to aquaculture and the marine ornamental trade, where cleaner shrimp could be applied for prophylaxis and control of ectoparasite infections. PMID:25706952

  19. Prediction of shelled shrimp weight by machine vision.

    PubMed

    Pan, Peng-min; Li, Jian-ping; Lv, Gu-lai; Yang, Hui; Zhu, Song-ming; Lou, Jian-zhong

    2009-08-01

    The weight of shelled shrimp is an important parameter for grading process. The weight prediction of shelled shrimp by contour area is not accurate enough because of the ignorance of the shrimp thickness. In this paper, a multivariate prediction model containing area, perimeter, length, and width was established. A new calibration algorithm for extracting length of shelled shrimp was proposed, which contains binary image thinning, branch recognition and elimination, and length reconstruction, while its width was calculated during the process of length extracting. The model was further validated with another set of images from 30 shelled shrimps. For a comparison purpose, artificial neural network (ANN) was used for the shrimp weight predication. The ANN model resulted in a better prediction accuracy (with the average relative error at 2.67%), but took a tenfold increase in calculation time compared with the weight-area-perimeter (WAP) model (with the average relative error at 3.02%). We thus conclude that the WAP model is a better method for the prediction of the weight of shelled red shrimp. PMID:19650197

  20. Improved methodology for the estimation of sulfur dioxide in shrimp

    SciTech Connect

    DeWitt, B.J. III

    1987-01-01

    A large portion of the shrimp harvested in the Gulf of Mexico are treated with sodium bisulfite to prevent melanosis. The Food and Drug Administration recognizes the need for this additive and regards a one minute dip in a 1.2% sodium bisulfite solution as current good manufacturing practice. Recently, sulfites have come under close scrutiny by regulatory authorities because they have been implicated as causing severe reaction in asthmatics. The objective of this study was to develop a rapid, efficient method for determining SO/sub 2/ in shrimp and to determine the stability of SO/sub 2/ in shrimp during frozen storage.

  1. Freshwater shrimp-sponge association from an ancient lake.

    PubMed

    Rintelen, Kristina von; Rintelen, Thomas von; Meixner, Martin; Lüter, Carsten; Cai, Yixiong; Glaubrecht, Matthias

    2007-06-22

    Shrimp-sponge associations occur frequently in marine ecosystems, serving as model systems for the evolution of eusociality. Here, we describe the first known instance of such association in freshwater from an ancient lake in Indonesia. The shrimp Caridina spongicola forms an exclusive and probably commensal association with a yet undescribed spongillinid sponge. Phylogenetic and ecological data suggest a comparatively recent origin of both taxa. Climatic fluctuations may have facilitated speciation and occasional hybridization of the shrimp species, which is derived from a rock-dwelling ancestor. Their extremely localized occurrence in an increasingly disturbed area makes both taxa a conservation priority. PMID:17347103

  2. Tracking down R Coronae Borealis stars from their mid-infrared WISE colours

    NASA Astrophysics Data System (ADS)

    Tisserand, P.

    2012-03-01

    Context. R Coronae Borealis stars (RCBs) are hydrogen-deficient and carbon-rich supergiant stars. They are very rare, with only ~50 actually known in our Galaxy. Interestingly, RCBs are strongly suspected of being the evolved merger product of two white dwarfs and could therefore be an important tool for understanding supernovae type Ia in the double degenerate scenario. Constraints on the spatial distribution and the formation rate of such stars are needed to picture their origin and test it in the context of actual population synthesis results. Aims: It is crucial to increase the number of known RCBs significantly. With an absolute magnitude MV ~ -5 and a bright/hot circumstellar shell made of amorphous carbon grains, RCBs are so distinctive that we should nowadays be able to find them everywhere in our Galaxy using publicly available catalogues. In the optical, the search is difficult because RCBs are known to undergo unpredictable photometric declines; however, mono-epoch mid-infrared data can help us to discriminate RCBs among other dust-producing stars. The aim is to produce from the mid-infrared WISE and near-infrared 2MASS catalogues a new catalogue of reasonable size, enriched with RCB stars. Methods: Colour-colour cuts used on all stars detected are the main selection criteria. The selection efficiency was monitored using the 52 known RCBs located in the sky area covered by the WISE first preliminary data release. Results: It has been found that selection cuts in mid-infrared colour-colour diagrams are a very efficient method of distinguishing RCBs from other stars. An RCB enriched catalogue made of only 1602 stars was produced, with a high detection efficiency of about 77%. Spectral energy distributions of 49 known RCBs and 5 known HdCs are also presented with estimates of their photosphere and circumstellar shell temperatures. Conclusions: The newly released WISE all sky catalogue has proven to be a valuable resource in finding RCB stars. Actual scenarios predict that between 100 and 500 RCBs exist in our Galaxy. The newly created RCB enriched catalogue is an important step towards significantly increasing the number of known RCB stars and therefore better understanding their origin. Tables 3-5 ara available in electronic form at http://www.aanda.orgFull Table 5 is only available at the CDS via anonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or via http://cdsarc.u-strasbg.fr/viz-bin/qcat?J/A+A/539/A51

  3. 40 CFR 408.110 - Applicability; description of the Northern shrimp processing in the contiguous States subcategory.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ...Applicability; description of the Northern shrimp processing in the contiguous States subcategory...PROCESSING POINT SOURCE CATEGORY Northern Shrimp Processing in the Contiguous States Subcategory...Applicability; description of the Northern shrimp processing in the contiguous States...

  4. 40 CFR 408.110 - Applicability; description of the Northern shrimp processing in the contiguous States subcategory.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ...Applicability; description of the Northern shrimp processing in the contiguous States subcategory...PROCESSING POINT SOURCE CATEGORY Northern Shrimp Processing in the Contiguous States Subcategory...Applicability; description of the Northern shrimp processing in the contiguous States...

  5. 40 CFR 408.110 - Applicability; description of the Northern shrimp processing in the contiguous States subcategory.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ...Applicability; description of the Northern shrimp processing in the contiguous States subcategory...PROCESSING POINT SOURCE CATEGORY Northern Shrimp Processing in the Contiguous States Subcategory...Applicability; description of the Northern shrimp processing in the contiguous States...

  6. 40 CFR 408.130 - Applicability; description of the breaded shrimp processing in the contiguous States subcategory.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ...Applicability; description of the breaded shrimp processing in the contiguous States subcategory...PROCESSING POINT SOURCE CATEGORY Breaded Shrimp Processing in the Contiguous States Subcategory...Applicability; description of the breaded shrimp processing in the contiguous States...

  7. 40 CFR 408.110 - Applicability; description of the Northern shrimp processing in the contiguous States subcategory.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ...Applicability; description of the Northern shrimp processing in the contiguous States subcategory...PROCESSING POINT SOURCE CATEGORY Northern Shrimp Processing in the Contiguous States Subcategory...Applicability; description of the Northern shrimp processing in the contiguous States...

  8. 40 CFR 408.130 - Applicability; description of the breaded shrimp processing in the contiguous States subcategory.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ...Applicability; description of the breaded shrimp processing in the contiguous States subcategory...PROCESSING POINT SOURCE CATEGORY Breaded Shrimp Processing in the Contiguous States Subcategory...Applicability; description of the breaded shrimp processing in the contiguous States...

  9. 40 CFR 408.130 - Applicability; description of the breaded shrimp processing in the contiguous States subcategory.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ...Applicability; description of the breaded shrimp processing in the contiguous States subcategory...PROCESSING POINT SOURCE CATEGORY Breaded Shrimp Processing in the Contiguous States Subcategory...Applicability; description of the breaded shrimp processing in the contiguous States...

  10. 40 CFR 408.130 - Applicability; description of the breaded shrimp processing in the contiguous States subcategory.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ...Applicability; description of the breaded shrimp processing in the contiguous States subcategory...PROCESSING POINT SOURCE CATEGORY Breaded Shrimp Processing in the Contiguous States Subcategory...Applicability; description of the breaded shrimp processing in the contiguous States...

  11. 40 CFR 408.110 - Applicability; description of the Northern shrimp processing in the contiguous States subcategory.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ...Applicability; description of the Northern shrimp processing in the contiguous States subcategory...PROCESSING POINT SOURCE CATEGORY Northern Shrimp Processing in the Contiguous States Subcategory...Applicability; description of the Northern shrimp processing in the contiguous States...

  12. 40 CFR 408.130 - Applicability; description of the breaded shrimp processing in the contiguous States subcategory.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ...Applicability; description of the breaded shrimp processing in the contiguous States subcategory...PROCESSING POINT SOURCE CATEGORY Breaded Shrimp Processing in the Contiguous States Subcategory...Applicability; description of the breaded shrimp processing in the contiguous States...

  13. 76 FR 30034 - Fisheries of the Caribbean, Gulf of Mexico, and South Atlantic; Shrimp Fishery Off the Southern...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-05-24

    ...Gulf of Mexico, and South Atlantic; Shrimp Fishery Off the Southern Atlantic States; Reopening of Commercial Penaeid Shrimp Trawling Off South Carolina AGENCY...SUMMARY: NMFS reopens commercial penaeid shrimp trawling, i.e., for brown,...

  14. 75 FR 53947 - Certain Frozen Warmwater Shrimp From Brazil, India, the People's Republic of China, Thailand, and...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-09-02

    ...Certain Frozen Warmwater Shrimp From Brazil, India, the People's Republic of China...of certain frozen warmwater shrimp from Brazil, Ecuador, India, the People's Republic...Frozen and Canned Warmwater Shrimp From Brazil, 69 FR 76910 (December 23,...

  15. 76 FR 23277 - Certain Frozen Warmwater Shrimp From Brazil, India, the People's Republic of China, Thailand, and...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-04-26

    ...Certain Frozen Warmwater Shrimp From Brazil, India, the People's Republic of China...of certain frozen warmwater shrimp from Brazil, Ecuador, India, the People's Republic...orders on frozen warmwater shrimp from Brazil, the PRC, India, Thailand, and...

  16. 75 FR 27299 - Certain Frozen Warmwater Shrimp from Brazil, India, the People's Republic of China and Thailand...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-05-14

    ...Certain Frozen Warmwater Shrimp from Brazil, India, the People's Republic of China...on certain frozen warmwater shrimp from Brazil, India, the People's Republic of China...on certain frozen warmwater shrimp from Brazil, India, the PRC, and Thailand....

  17. COMPARISON OF CARBON AND NITROGEN FLUXES IN TIDEFLAT FOOD WEBS DOMINATED BY BURROWING SHRIMP OR BY CULTURED OYSTERS

    EPA Science Inventory

    Two species of indigenous, thalassinid burrowing shrimps are pests to the benthic culture of Pacific oysters (Crassostrea gigas) because deposition of sediment excavated by the shrimps buries or smothers the oysters. Carbaryl pesticide is used to reduce burrowing shrimp densitie...

  18. 78 FR 19639 - Certain Frozen Warmwater Shrimp From India and Thailand: Notice of Initiation of Antidumping Duty...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-04-02

    ...Frozen Warmwater Shrimp From India and Thailand: Notice of Initiation of Antidumping...warmwater shrimp (shrimp) from India and Thailand. The anniversary month of these orders...and Blaine Wiltse (202) 482-6345 (Thailand), AD/CVD Operations, Office...

  19. 76 FR 26241 - Certain Frozen Warmwater Shrimp From Thailand: Notice of Court Decision Not in Harmony With Final...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-05-06

    ...Certain Frozen Warmwater Shrimp From Thailand: Notice of Court Decision Not in Harmony...certain frozen warmwater shrimp from Thailand covering the period of review (POR...certain frozen warmwater shrimp from Thailand covering the POR of February 1,...

  20. 75 FR 34976 - Certain Frozen Warmwater Shrimp from Thailand: Notice of Extension of Time Limit for the Final...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-06-21

    ...Certain Frozen Warmwater Shrimp from Thailand: Notice of Extension of Time Limit for...certain frozen warmwater shrimp from Thailand covering the period February 1, 2008...Certain Frozen Warmwater Shrimp from Thailand: Preliminary Results of...

  1. 75 FR 62099 - Certain Frozen Warmwater Shrimp From India and Thailand: Notice of Extension of Time Limits for...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-10-07

    ...Frozen Warmwater Shrimp From India and Thailand: Notice of Extension of Time Limits...warmwater shrimp from Brazil, India, and Thailand covering the period February 1, 2009...Warmwater Shrimp from Brazil, India, and Thailand: Notice of Initiation of...

  2. AMERICAN SOLENOCERID SHRIMPS OF THE GENERA HYMENOPENAEUS, HALIPOROIDES, PLEOTICUS,

    E-print Network

    , NOAA, National Museum of Natural History, Washington, DC 20560. Manuscript accepted November 1976AMERICAN SOLENOCERID SHRIMPS OF THE GENERA HYMENOPENAEUS, HALIPOROIDES, PLEOTICUS, HADROPENAEUS NEW GENUS, ANDMESOPENAEUS NEW GENUS ISABEL PEREZ FARFANTE1 ABSTRACT Twelve American species, one from Hawaii

  3. Shoreline as a controlling factor in commercial shrimp production

    NASA Technical Reports Server (NTRS)

    Faller, K. H. (principal investigator)

    1979-01-01

    The author has identified the following significant results. An ecological model was developed that relates marsh detritus export and shrimp production. It was based on the hypothesis that the shoreline is a controlling factor in the production of shrimp through regulation of detritus export from the marsh. LANDSAT data were used to develop measurement of shoreline length and areas of marsh having more than 5.0 kilometers of shoreline per square kilometer of area for the Louisiana coast, demonstrating the capability of remote sensing to provide important geographic information. These factors were combined with published tidal ranges and salinities to develop a mathematical model that predicted shrimp production for nine geographic units of the Louisiana coast, as indicated by the long term average commercial shrimp yield.

  4. GENETIC CHARACTERIZATION OF A BURROWING SHRIMP (NEOTRYPAEA CALIFORNIENSIS)

    EPA Science Inventory

    Ghost shrimp, (Neotypaea californiensis) are burrowers, whose bioturbation and sediment destabilizations have a negative effect on mariculture of the commercially important oyster (Crassostrea gigas). Oyster farmers in Washington and Oregon estuaries have been poisoning these shr...

  5. Economic and financial implications of shrimp farming in West Texas 

    E-print Network

    Britt, David Westbrook

    1995-01-01

    A research and demonstration shrimp producing facility was established at Imperial, Texas in 1991. The results showed technical feasibility. Using data collected from the facility in West Texas and commercial operations ...

  6. MAPPING BURROWING SHRIMP AND SEAGRASS IN YAQUINA ESTUARY

    EPA Science Inventory

    Burrowing shrimp and seagrasses create extensive intertidal and shallow subtidal habitats within Pacific NW estuaries. Maps of their populations are useful to inform estuarine managers of locations that deserve special consideration for conservation, and to inform oyster farmers...

  7. OXYGEN CONSUMPTION AND HEMOLYMPH OSMOLALITY OF BROWN SHRIMp, PENAEUS AZTECUS

    E-print Network

    ,' JAMES G. GOSSELlNK,2 AND JAMES H. STONE2 ABSTRACf Oxygen consumption and (or) osmoregulation ofbrown for osmoregulation by euryhaline species. Mean hemolymph concentrations were significantly higher for 3.7 g shrimp

  8. Proceedings of the Latin American Shrimp Culture Congress

    E-print Network

    , density, salinity, substrate texture, hunger, and the presence of fish predators on the burrowing behavior), substrate (fine sand course sand, crushed shell), density (5.8, 11.6, 23.1 shrimp per sq m), hunger (fed

  9. 77 FR 29586 - Sea Turtle Conservation; Shrimp Trawling Requirements; Correction

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-05-18

    ...Atmospheric Administration 50 CFR Part 223 RIN 0648-BC10 Sea Turtle Conservation; Shrimp Trawling Requirements; Correction AGENCY...and wing nets (butterfly trawls) rigged for fishing to use turtle excluder devices (TEDs) in their nets, and announced...

  10. INFECTIVITY OF METARHIZIUM ANISOPLIAE IN GRASS SHRIMP EMBRYOS

    EPA Science Inventory

    Developing embryos of the estuarine grass shrimp, Palaemonetes pugio, were exposed to Metarhizium anisopliae conidiospores. Attachment of conidiospores was often followed by germination and outgrowth on embryo surface. Penetration of the embryonic envelopes by M. anisopliae allow...

  11. Antimicrobial Interventions to Reduce Listeria spp. Contamination on Shrimp 

    E-print Network

    Wong, Tsui-Yin

    2010-01-14

    The effects of selected antimicrobials, applied singularly or in combination, and frozen or refrigerated storage conditions on the survival of Listeria spp. on inoculated shrimp was evaluated in this study. A combination ...

  12. REVISION OF THE PENAEID SHRIMP GENUS PENAEOPSIS (CRUSTACEA: DECAPODA)

    E-print Network

    in the upper part of the continental and insular slopes oftropical, subtropical, and cer- tain temperate is restricted to the Atlantic, where it is present on both the eastern and west- ern slopes. These shrimps

  13. In northern South America, the ghost shrimp Lepidophthalmus

    E-print Network

    ), this adaptation also includes sediments of tropical, estuarine ponds in which penaeid shrimp are cultured. Dense, and monthly counts of eggs per female peaked in February­April. Detection of recruits

  14. DISSOLVED AIR FLOTATION TREATMENT OF GULF SHRIMP CANNERY WASTEWATER

    EPA Science Inventory

    This study reports on the operation of a plant scale dissolved air flotation system installed to define and evaluate attainable shrimp cannery wastewater treatment levels. The system was operated in all three modes of DAF pressurization. Destabilizing coagulants investigation inc...

  15. Shrimp and redfish studies, bryan mound brine disposal site off Freeport, Texas, 1979-1981. Volume IV. Interview sampling survey of shrimp catch and effort. Technical memo

    SciTech Connect

    Johnson, M.F.

    1981-06-01

    An interview sampling survey of shrimp catch and fishing effort was conducted at specified ports along the Texas coast to strengthen the information base required to determine the effect of the disposal of brine from the Bryan Mound salt dome off Freeport, Texas on commercial brown shrimp (Penaeus aztecus) and white shrimp (Penaeus setiferus) populations in the Gulf of Mexico. The data recorded included port number, vessel name, official vessel number, shrimp dealer number, date of landing, area fished, depth of capture, days fished, and pounds of shrimp caught by species and size categories.

  16. Decline and Local Extinction of Caribbean Eusocial Shrimp

    PubMed Central

    Duffy, J. Emmett; Macdonald III, Kenneth S.; Hultgren, Kristin M.; Chak, Tin Chi Solomon; Rubenstein, Dustin R.

    2013-01-01

    The tropical shrimp genus Synalpheus includes the only eusocial marine animals. In much of the Caribbean, eusocial species have dominated the diverse fauna of sponge-dwelling shrimp in coral rubble for at least the past two decades. Here we document a recent, dramatic decline and apparent local extinction of eusocial shrimp species on the Belize Barrier Reef. Our collections from shallow reefs in central Belize in 2012 failed to locate three of the four eusocial species formerly abundant in the area, and showed steep declines in colony size and increases in frequency of queenless colonies prior to their disappearance. Concordant with these declines, several nonsocial, pair-forming Synalpheus species increased in frequency. The decline in eusocial shrimp is explained in part by disappearance of two sponge species on which they specialize. Eusocial shrimp collections from Jamaica in 2012 showed similar patterns of decline in colony size and increased queenlessness compared with prior Jamaican collections. The decline and local extinction of eusocial shrimp happened against a backdrop of changes in coral assemblages during recent decades, and may reflect changes in abundance and quality of dead coral substratum and succession of the diverse cryptic organisms living within it. These changes document potentially worrisome declines in a unique taxon of eusocial marine animals. PMID:23418429

  17. High-resolution optical spectroscopy of the R Coronae Borealis star V532 Ophiuchi at maximum light

    E-print Network

    Rao, N Kameswara; Woolf, Vincent M; Hema, B P

    2014-01-01

    High-resolution optical spectra of the R Coronae Borealis (RCB) star V532 Oph at light maximum are discussed. The absolute visual magnitude M_V of the star is found to be -4.9 \\pm 0.5. The elemental abundances suggest the star belongs to the majority class of RCB stars but is among the most O-poor of this class with mild enhancements of heavy elements Y, Zr, Ba and La. The C_2 Swan bands are weak in V532 Oph relative to R CrB. Other aspects of the high-resolution spectrum confirm that V532 Oph is representative of majority RCBs, i.e., the radial velocity is variable, circumstellar material is present and the photosphere feeds a high-velocity stellar wind.

  18. UPb SHRIMP zircon geochronology and Ttd history of the Kampa Dome, southern Tibet

    E-print Network

    Sandiford, Mike

    U­Pb SHRIMP zircon geochronology and T­t­d history of the Kampa Dome, southern Tibet M.C. Quigley a­Pb SHRIMP geochronology; Himalaya; Tibet 1. Introduction The North Himalayan gneiss domes (NHGD) in southern

  19. The SHRIMP Performance Monitor: Design and Applications Margaret Martonosi Douglas W. Clark Malena Mesarina

    E-print Network

    Singh, Jaswinder Pal

    The SHRIMP Performance Monitor: Design and Applications Margaret Martonosi Douglas W. Clark Malena a performance monitoring sys­ tem for the SHRIMP multicomputer. The system's core is a hardware monitor

  20. Performance Monitoring in a Myrinet-Connected Shrimp Cluster Cheng Liao Margaret Martonosi Douglas W. Clark

    E-print Network

    Singh, Jaswinder Pal

    Performance Monitoring in a Myrinet-Connected Shrimp Cluster Cheng Liao Margaret Martonosi Douglas. We present a firmware-based performance monitor we de- signed for a Myrinet-connected Shrimp cluster

  1. ENHANCED ORGANIC MATTER REMINERALIZATION AND NUTRIENT TURNOVER BY POPULATIONS OF BURROWING SHRIMP IN YAQUINA BAY, OR

    EPA Science Inventory

    Burrowing, or thalassinid, shrimp structure large areas of intertidal habitat of Pacific Northwest estuaries. This field study utilized a combination of anoxic incubations, porewater dialysis peepers, and benthic chambers to quantify the role of burrowing shrimp species on OM dec...

  2. 78 FR 5416 - Certain Frozen Warmwater Shrimp From the People's Republic of China, Ecuador, India, Indonesia...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-01-25

    ...Sons Seafood, Inc.; Wood's Fisheries; Mariah Jade Shrimp Company LLC; David Chauvin's Seafood Company, LLC; and Rountree Enterprises, Inc. (dba Leonard & Sons Shrimp Co. and R&R Fisheries). \\2\\ See Petitions for the...

  3. 78 FR 50387 - Certain Frozen Warmwater Shrimp From the Socialist Republic of Vietnam: Final Affirmative...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-08-19

    ...Sons Seafood, Inc.; Wood's Fisheries; Mariah Jade Shrimp Company, LLC; David Chauvin's Seafood Company, LLC; and Rountree Enterprises, Inc. (dba Leonard & Sons Shrimp Co. and R&R Fisheries). \\2\\ In the Preliminary...

  4. PHYSIOLOGICAL AND HISTOPATHOLOGICAL EVALUATION OF DITHIOCARBAMATE TOXICITY TO THE GRASS SHRIMP, 'PALAEMONETES PUGIO'

    EPA Science Inventory

    Laboratory tests were conducted to determine the acute toxicity of dithiocarbamates (Aquatreat and Busan) to molting grass shrimp and the effects of these fungicides on regenerative limb growth in grass shrimp. Results indicate that both dithiocarbamate formulations caused a dose...

  5. Edible Mushroom (Flammulina velutipes) Extract Inhibits Melanosis in Kuruma Shrimp (Marsupenaeus japonicus)

    E-print Network

    Huang, Ching-Tsan

    1 Edible Mushroom (Flammulina velutipes) Extract Inhibits Melanosis in Kuruma Shrimp (Marsupenaeus: antimelanosic compounds, ergothioneine, Kuruma shrimp (Marsupenaeus japonicus), melanosis, mushroom (Flammulina and antidiscoloration efficacy of ergothioneine in mushroom (Flammulina velutipes) extract added to beef and fish meats

  6. INFLUENCE OF AN INSECT GROWTH REGULATOR ON THE LARVAL DEVELOPMENT OF AN ESTUARINE SHRIMP

    EPA Science Inventory

    The influence of methoprene, an insect growth regulator used in mosquito control, on larval development of the estuarine grass shrimp (Palaemonetes pugio) was examined in the laboratory. o grass shrimp larvae successfully completed metamorphosis when continuously exposed to 1000 ...

  7. 78 FR 54912 - Frozen Warmwater Shrimp from Indonesia and Thailand; Termination of Investigations

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-09-06

    ... connection with the subject investigations concerning Indonesia (78 FR 50379) and Thailand (78 FR 50383... COMMISSION Frozen Warmwater Shrimp from Indonesia and Thailand; Termination of Investigations AGENCY: United...(a)), the countervailing duty investigations concerning frozen warmwater shrimp from Indonesia...

  8. 78 FR 13325 - Certain Frozen Warmwater Shrimp From the People's Republic of China, Ecuador, India, Indonesia...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-02-27

    ...: Initiation of Countervailing Duty Investigations, 78 FR 5416 (January 25, 2013) (Initiation Notice...-815] Certain Frozen Warmwater Shrimp From the People's Republic of China, Ecuador, India, Indonesia... frozen warmwater shrimp from the People's Republic of China, Ecuador, India, Indonesia,...

  9. 78 FR 54912 - Frozen Warmwater Shrimp from Indonesia and Thailand; Termination of Investigations

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-09-06

    ...Frozen Warmwater Shrimp from Indonesia and Thailand; Termination of Investigations AGENCY...concerning Indonesia (78 FR 50379) and Thailand (78 FR 50383). Accordingly, pursuant...frozen warmwater shrimp from Indonesia and Thailand (investigation Nos....

  10. MORE THAN JUST BAIT: BURROWING SHRIMP AS ECOSYSTEM ENGINEERS IN OREGON ESTUARIES - SEPTEMBER 2006

    EPA Science Inventory

    Burrowing shrimp may be most widely known as excellent fishing bait, but they also play important roles in estuaries of the Pacific Northwest. These shrimps strongly affect carbon and nutrient cycling, phytoplankton abundance, food web structure and dynamics, sediment stability,...

  11. RESPONSE OF GHOST SHRIMP (NEOTRYPAEA CALIFORNIENSIS) BIOTURBATION TO ORGANIC MATTER ENRICHMENT OF ESTUARINE INTERTIDAL SEDIMENTS

    EPA Science Inventory

    Populations of burrowing shrimp (Neotrypaea californiensis and Upogebia p;ugettensis) are the dominant invertebrate fauna on Pacific estuarine tide flats, occupying >80% of intertidal area in some estuaries. Burrowing shrimp are renowned for their bioturbation of intertidal sedi...

  12. Quality perceptions of stakeholders in Beninese export-oriented shrimp chain.

    PubMed

    Dabade, D Sylvain; den Besten, Heidy M W; Azokpota, Paulin; Nout, M J Rob; Hounhouigan, D Joseph; Zwietering, Marcel H

    2014-09-01

    In recent years, the Beninese shrimp sector has faced a ban on export to the European Union due to lack of compliance with food safety standards. The present study aimed at obtaining insight into the factors that determine shrimp quality and safety in Benin. A survey was conducted to investigate the relationships between stakeholders, the conditions under which shrimps are handled at fishing areas and processed at shrimp plants, and the stakeholders' perceptions of quality. A total of 325 fishermen, 128 intermediate traders, 12 collectors, and 3 shrimp processing plant managers were interviewed face to face. The results showed that various specific relations existed between the stakeholders. For example, loyalty was ensured by family relationships, or incentives were provided to ensure a supply of shrimps between stakeholders. Shrimp handling practices during the steps prior to shrimp processing at the plants were not in agreement with the requirements of the European regulations. For example, shrimps were kept at ambient temperature (28 ± 1°C) by 94.1% of fishermen and 60.9% of intermediate traders. Shrimps were also stored in inappropriate holding containers and washed with nonpotable water. Fishermen, intermediate traders, and collectors considered shrimp size and texture their priority quality attributes, whereas plant managers considered shrimp appearance (freshness) and texture their priority quality attributes. This survey demonstrated that the steps prior to shrimp processing at the plants are the critical steps for shrimp quality and safety because of temperature abuse and inappropriate hygienic conditions. There is a need to communicate and provide incentives for the stakeholders in the first part of the chain to give priority to shrimp freshness. Moreover, training in Good Fishing Practices and safe food handling practices and evaluation of compliance with the practices through monitoring will contribute to better shrimp quality and safety management. PMID:25198861

  13. The Commercial Bait Shrimp Fishery in Galveston Bay, Texas, 1959-87

    E-print Network

    The Commercial Bait Shrimp Fishery in Galveston Bay, Texas, 1959-87 KENNETH N. BAXTER, CARLTON H. FURR, Jr., and ELIZABETH SCOTT Introduction Live and dead shrimp are a preferred natural bait for recreational fishing. As a result, extensive bait-shrimp fisheries have developed along the Gulf coast

  14. The effects of boiling on the allergenic properties of tropomyosin of shrimp (litopenaeus vannamei).

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Shrimp play an important role in human nutrition, and is responsible for severe hypersensitivity reactions. The thermal stability of raw and boiled shrimp tropomyosins (TM) has never been reported. The aims of the study were to compare the stability of raw and boiled shrimp TM of Litopenaeus vanname...

  15. Secondary production, longevity and resource consumption rates of freshwater shrimps in two tropical

    E-print Network

    Benstead, Jon

    Secondary production, longevity and resource consumption rates of freshwater shrimps in two of Puerto Rico, San Juan, Puerto Rico SUMMARY 1. Freshwater shrimps often dominate the biomass of tropical such as growth, production and longevity. Such information is critical for understanding both the role of shrimps

  16. SEASONAL OCCURRENCE AND SIZE DISTRIBUTION OF POSTLARVAL SHRIMP NEAR GALVESTON, TEXAS, WITH

    E-print Network

    AND WHITE ON SPECIES BROWN NOTES SEASONAL OCCURRENCE AND SIZE DISTRIBUTION OF POSTLARVAL SHRIMP and alon~ Galveston Island's beach durin~ a I-year period. Postlarval brown shrimp, P. aztecus, and white shrimp, P. setijerus, were the predominant penaeids cau~ht. Morpholo~icalcharacters, seasonal size differ

  17. Abstract.-A new species of ghost shrimp Lepidophthalmus sin'Ue?l8'is is

    E-print Network

    Abstract.-A new species of ghost shrimp Lepidophthalmus sin'Ue?l8'is is described from of a commercial penaeid shrimp farm where its bur- row densities range up to 2093 bur- row openings/m~ in pond. sinuensis may nega- tively impact penaeid shrimp culture. Lepidophthalmus sinuensis: A New Species of Ghost

  18. Halalkalicoccus jeotgali sp. nov., a halophilic archaeon from shrimp jeotgal, a traditional Korean

    E-print Network

    Bae, Jin-Woo

    Halalkalicoccus jeotgali sp. nov., a halophilic archaeon from shrimp jeotgal, a traditional Korean 660-701, Korea A novel, extremely halophilic archaeon B3T was isolated from shrimp-salted seafood. Its isolated another novel species of this genus from shrimp jeotgal; a traditional fermented food from Korea

  19. Occurrence and Behavior of Juvenile Red Snapper, Lutjanus campechanus, on Commercial Shrimp Fishing Grounds

    E-print Network

    Occurrence and Behavior of Juvenile Red Snapper, Lutjanus campechanus, on Commercial Shrimp duced to achieve this goal is the incidental capture ofjuvenile red snappers in shrimp, Penaeus spp., trawls. NOAA '.I' National Marine Fisheries Service is conducting re search to develop shrimp trawl

  20. Effects of Copper, Cadmium, and Zinc on the Hatching Success of Brine Shrimp (Artemia franciscana)

    E-print Network

    Grosell, Martin

    Effects of Copper, Cadmium, and Zinc on the Hatching Success of Brine Shrimp (Artemia franciscana 2006 Abstract. Previous studies indicate that the hatching success of brine shrimp (Artemia franciscana that brine shrimp are at significant risk from Cu and Zn in Great Salt Lake (GSL), UT, where ambient

  1. Shrimp Loss Associated with Turtle Excluder Devices: Are the Historical Estimates Statistically Biased?

    E-print Network

    Shrimp Loss Associated with Turtle Excluder Devices: Are the Historical Estimates Statistically Office Box 1125, West Columbia, Texas 77465, USA Abstract.--Estimates of penaeid shrimp losses associated. Comparison of the mean catch rates from the TED and control nets provided an estimate of shrimp loss. However

  2. An Economic Analysis of Texas Shrimp Season Closures WADE GRIFFIN, HOLLY HENDRICKSON, CHRIS OLIVER, GARY MATLOCK,

    E-print Network

    An Economic Analysis of Texas Shrimp Season Closures WADE GRIFFIN, HOLLY HENDRICKSON, CHRIS OLIVER shrimp fishery is one of the most valuable fish eries in the United States in terms of ex-vessel value, and Texas has tradi tionally led all Gulf states in ex-vessel value of shrimp landed. The total im pact

  3. Comparison of Shrimp and Finfish Catch Rates and Ratios for Texas and Louisiana

    E-print Network

    Comparison of Shrimp and Finfish Catch Rates and Ratios for Texas and Louisiana NOEL H. WAITS and GILMORE J. PELLEGRIN, Jr Introduction The Fishery Conservation Zone off Texas was closed to shrimp trawling from 22 May to 15 July 1981 to pro- vide shrimp with an extended growing period in anticipation

  4. Cleavage and gastrulation of the dendrobranchiate shrimp Penaeus monodon (Crustacea, Malacostraca, Decapoda)

    E-print Network

    Alwes, Frederike

    Cleavage and gastrulation of the dendrobranchiate shrimp Penaeus monodon (Crustacea, Malacostraca of the black tiger shrimp Penaeus monodon was analyzed from the first division until gastrulation. Observations for stereotypic develop- ment is the cleavage pattern in dendrobranchiate shrimps among the Decapoda. Starting

  5. A Demographic Profile of Participants in Two Gulf of Mexico Inshore Shrimp Fisheries and Their

    E-print Network

    A Demographic Profile of Participants in Two Gulf of Mexico Inshore Shrimp Fisheries The lifecycleofGulfofMexico shrimp ranges from the inland coastal estuaries into the deeper waters ofthe Gulf. Con sequently, shrimp are harvested by both inshore and offshore shrimpers. These two user groups harvest

  6. Foreign Fishery Developments may have also affected 1984 pond pro-Ecuadorean Shrimp

    E-print Network

    Foreign Fishery Developments may have also affected 1984 pond pro- duction. Ecuadorean Shrimp Culture and Exports Introduction Ecuadorean shrimp farmers reported increasing difficulty in obtaining's estimated 60,000 hectares of ponds were dry because of this shortage. About 80 percent of Ecuador's shrimp

  7. MIGRATIONS AND GEOGRAPHIC DISTRIBUTION OF PINK SHRIMP, PENAEUS DUORARUM, OF THE TORTUGAS AND SANIBEL GROUNDS,

    E-print Network

    MIGRATIONS AND GEOGRAPHIC DISTRIBUTION OF PINK SHRIMP, PENAEUS DUORARUM, OF THE TORTUGAS of COMMERCIAL FISHERIES BIOLOGICAL FIELD STATION, MIAMI, FLA. ABSTRACT Pink shrimp, Penaeus duorarum, frequent shrimp stocks as biological units, 15 mark-recovery experiments in which biological stains were

  8. The American brine shrimp as an exotic invasive species in the western Mediterranean

    E-print Network

    Figuerola, Jordi

    The American brine shrimp as an exotic invasive species in the western Mediterranean Francisco Amat, the Iberian Peninsula and Morocco) contain autochthonous forms of the brine shrimp Artemia populations of the American brine shrimp A. franciscana have also been recorded in these Mediterranean

  9. In situ source level and source position estimates of biological transient signals produced by snapping shrimp

    E-print Network

    by snapping shrimp in an underwater environment Brian G. Fergusona) and Jane L. Cleary Maritime Operations shrimp are sensed underwater by a wide aperture array. The instantaneous range and bearing of the source-dimensional spatial distribution of the local snapping shrimp population. The principal habitat is found

  10. Are the shrimps Halocaridina rubra and H. palahemo simply different morphotypes of the same species?

    E-print Network

    Cowles, David L.

    Are the shrimps Halocaridina rubra and H. palahemo simply different morphotypes of the same species for the degree of MASTER OF SCIENCE 28 May, 2013 #12;#12;Abstract The shrimp genus Halocaridina (family Atyidae of the first and second pereiopods were tracked. The hypothesis was that the shrimp which consistently feed

  11. Population genetic structure of Brazilian shrimp species (Farfantepenaeus sp., F. brasiliensis, F. paulensis and

    E-print Network

    Solé-Cava, Antonio M.

    Population genetic structure of Brazilian shrimp species (Farfantepenaeus sp., F. brasiliensis, F and Evolutionary Biology, Port Erin Marine Laboratory, Isle of Man, United Kingdom. Abstract Penaeid shrimps, allozymes. Received: September 25, 2003; Accepted: July 19, 2004. Introduction Penaeid shrimps are important

  12. Simulated Economic Impact of TED Regulations on Selected Vessels in the Texas Shrimp Fishery

    E-print Network

    Simulated Economic Impact of TED Regulations on Selected Vessels in the Texas Shrimp Fishery JOY CLARK, WADE GRIFFIN, JERRY CLARK, and JAMES RICHARDSON Introduction Shrimp fishermen trawling legislation requires the use ofa Turtle Ex cluderDevice (TED) which, when inplace in the shrimp trawl, reduces

  13. 50 CFR 622.19 - South Atlantic rock shrimp limited access off Georgia and Florida.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ...2011-10-01 false South Atlantic rock shrimp limited access off Georgia and Florida...Limitations § 622.19 South Atlantic rock shrimp limited access off Georgia and Florida...For a person aboard a vessel to fish for rock shrimp in the South Atlantic EEZ off...

  14. 50 CFR 622.208 - Minimum mesh size applicable to rock shrimp off Georgia and Florida.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ...false Minimum mesh size applicable to rock shrimp off Georgia and Florida. 622...208 Minimum mesh size applicable to rock shrimp off Georgia and Florida. (a) The minimum mesh size for the cod end of a rock shrimp trawl net in the South...

  15. 50 CFR 622.208 - Minimum mesh size applicable to rock shrimp off Georgia and Florida.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ...false Minimum mesh size applicable to rock shrimp off Georgia and Florida. 622...208 Minimum mesh size applicable to rock shrimp off Georgia and Florida. (a) The minimum mesh size for the cod end of a rock shrimp trawl net in the South...

  16. 50 CFR 622.19 - South Atlantic rock shrimp limited access off Georgia and Florida.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ...2010-10-01 false South Atlantic rock shrimp limited access off Georgia and Florida...Limitations § 622.19 South Atlantic rock shrimp limited access off Georgia and Florida...For a person aboard a vessel to fish for rock shrimp in the South Atlantic EEZ off...

  17. 50 CFR 622.19 - South Atlantic rock shrimp limited access off Georgia and Florida.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ...2012-10-01 false South Atlantic rock shrimp limited access off Georgia and Florida...Limitations § 622.19 South Atlantic rock shrimp limited access off Georgia and Florida...For a person aboard a vessel to fish for rock shrimp in the South Atlantic EEZ off...

  18. 76 FR 18157 - Certain Frozen Warmwater Shrimp From Brazil, India, and Thailand: Notice of Initiation of...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-04-01

    ... Administrative Review, 72 FR 52055, (Sept. 12, 2007) ] (2004-2006 Indian Shrimp Final Results). Initiation of..., 74 FR 9991, 9994 (Mar. 9, 2009) (2007-2008 Indian Shrimp Preliminary Results) unchanged in Certain... Administrative Review, 74 FR 33409 (July 13, 2009) (2007-2008 Indian Shrimp Final Results). Absent information...

  19. 78 FR 40436 - Proposed Information Collection; Comment Request; Mandatory Shrimp Vessel and Gear...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-07-05

    ... Shrimp Vessel and Gear Characterization Survey AGENCY: National Oceanic and Atmospheric Administration... Shrimp Fishery Management Plan (FMP). The regulations for the Gulf Shrimp Vessel and Gear... Gear Characterization Form. The form will be provided by NMFS at the time of permit application...

  20. 77 FR 36998 - Proposed Information Collection; Comment Request; Mandatory Shrimp Vessel and Gear...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-06-20

    ... Shrimp Vessel and Gear Characterization Survey AGENCY: National Oceanic and Atmospheric Administration... Shrimp Fishery Management Plan (FMP). The regulations for the Gulf Shrimp Vessel and Gear... and Gear Characterization Form. The form will be provided by NMFS at the time of permit...

  1. 78 FR 50389 - Certain Frozen Warmwater Shrimp From Ecuador: Final Affirmative Countervailing Duty Determination

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-08-19

    ...of processing; (3) fresh shrimp and prawns whether...That is produced from fresh (or thawed-from-frozen...layer of rice or wheat flour of at least 95 percent...evenly coated with the flour; (4) with the non-shrimp...Provision) to Subsidies to Fresh Shrimp Farmers...

  2. 78 FR 50383 - Certain Frozen Warmwater Shrimp From the Republic of Indonesia: Final Negative Countervailing...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-08-19

    ...of processing; (3) fresh shrimp and prawns whether...That is produced from fresh (or thawed-from-frozen...layer of rice or wheat flour of at least 95 percent...evenly coated with the flour; (4) with the non-shrimp...Provision) to Subsidies to Fresh Shrimp Farmers...

  3. 78 FR 50379 - Certain Frozen Warmwater Shrimp From Thailand: Final Negative Countervailing Duty Determination

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-08-19

    ...of processing; (3) fresh shrimp and prawns whether...That is produced from fresh (or thawed-from-frozen...layer of rice or wheat flour of at least 95 percent...evenly coated with the flour; (4) with the non-shrimp...Subsidies Received by Fresh Shrimp Suppliers to...

  4. Strong population genetic structure and larval dispersal capability of the burrowing ghost shrimp (Neotrypaea californiensis)

    EPA Science Inventory

    The burrowing ghost shrimp, Neotrypaea californiensis, is a vital member of the estuarine benthic community. Dense populations of shrimp are found in the major estuaries of Washington and Oregon. Our study determines the genetic structure of shrimp populations in order to gain ...

  5. Costs and Returns Trends in the Gulf of Mexico Shrimp Industry, 197178

    E-print Network

    Costs and Returns Trends in the Gulf of Mexico Shrimp Industry, 1971·78 JOHN P. WARREN and WADE L. GRIFFIN Figure I.-Total U.S. Gulf of Mexico shrimp landings: Volume (million pounds), value (million dollars), average price (cents/pound), and days fished (thousands), 1956-77. The Gulf of Mexico Shrimp

  6. 75 FR 22370 - Certain Frozen Warmwater Shrimp From Brazil, Ecuador, India, the People's Republic of China...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-04-28

    ... Value: Certain Frozen and Canned Warmwater Shrimp From Brazil, 69 FR 76910 (December 23, 2004) (Brazil... Canned Warmwater Shrimp From Ecuador, 69 FR 76913 (December 23, 2004) (Ecuador Final Determination... Critical Circumstances: Certain Frozen and Canned Warmwater Shrimp From India, 69 FR 76916 (December...

  7. Primary Research Paper Tadpole shrimp structure macroinvertebrate communities in playa lake

    E-print Network

    Willig, Michael

    Primary Research Paper Tadpole shrimp structure macroinvertebrate communities in playa lake microcosms were used to assess whether tadpole shrimp, Triops sp., affect community structure of other native macroinvertebrates in playa lakes of the Southern High Plains of Texas. Removal of tadpole shrimp shortly after

  8. DNaseI-hypersensitive sites at promoter-like sequences in the spacer of Xenopus laevis and Xenopus borealis ribosomal DNA.

    PubMed Central

    La Volpe, A; Taggart, M; McStay, B; Bird, A

    1983-01-01

    We have detected a DNAseI hypersensitive site in the ribosomal DNA spacer of Xenopus laevis and Xenopus borealis. The site is present in blood and embryonic nuclei of each species. In interspecies hybrids, however, the site is absent in unexpressed borealis rDNA, but is present normally in expressed laevis rDNA. Hypersensitive sites are located well upstream (over lkb) of the pre-ribosomal RNA promoter. Sequencing of the hypersensitive region in borealis rDNA, however, shows extensive homology with the promoter sequence, and with the hypersensitive region in X. laevis. Of two promoter-like duplications in each spacer, only the most upstream copy is associated with hypersensitivity to DNAaseI. Unlike DNAaseI, Endo R. MspI digests the rDNA of laevis blood nuclei at a domain extending downstream from the hypersensitive site to near the 40S promoter. Since the organisation of conserved sequence elements within this "proximal domain" is similar in three Xenopus species whose spacers have otherwise evolved rapidly, we conclude that this domain plays an important role in rDNA function. Images PMID:6310495

  9. Bioaccumulation of animal adenoviruses in the pink shrimp.

    PubMed

    Luz, Roger B; Staggemeier, Rodrigo; Fabres, Rafael B; Soliman, Mayra C; Souza, Fernanda G; Gonçalves, Raoni; Fausto, Ivone V; Rigotto, Caroline; Heinzelmann, Larissa S; Henzel, Andréia; Fleck, Juliane D; Spilki, Fernando R

    2015-01-01

    Adenoviruses are among the most promising viral markers of fecal contamination. They are frequently found in the water, sediment and soil of regions impacted by human activity. Studies of the bioaccumulation of enteric viruses in shrimp are scarce. The cities located in the northern coast of the lake systems in Southern Brazil have high urbanization and intensive farming rates, and poor sewage collection and treatment. One hundred (n = 100) Farfantepenaeus paulensis pink-shrimp specimens and 48 water samples were collected from coastal lagoons between June 2012 and May 2013. Water samples were concentrated and the shrimp, mashed. After DNA extraction, samples were analyzed by real time polymerase chain reaction (qPCR) in order to detect and quantify viral genomes. Thirty-five percent of shrimp samples were positive for contamination, predominantly by avian adenoviruses. A total of 91.7% of water samples contained adenoviruses DNA, with the human form being the most frequent. Our results provided evidence of significant bioaccumulation of adenoviruses in shrimp, showing the extent of the impact of fecal pollution on aquatic ecosystems. PMID:26413052

  10. Bioaccumulation of animal adenoviruses in the pink shrimp

    PubMed Central

    Luz, Roger B.; Staggemeier, Rodrigo; Fabres, Rafael B.; Soliman, Mayra C.; Souza, Fernanda G.; Gonçalves, Raoni; Fausto, Ivone V.; Rigotto, Caroline; Heinzelmann, Larissa S.; Henzel, Andréia; Fleck, Juliane D.; Spilki, Fernando R.

    2015-01-01

    Adenoviruses are among the most promising viral markers of fecal contamination. They are frequently found in the water, sediment and soil of regions impacted by human activity. Studies of the bioaccumulation of enteric viruses in shrimp are scarce. The cities located in the northern coast of the lake systems in Southern Brazil have high urbanization and intensive farming rates, and poor sewage collection and treatment. One hundred (n = 100) Farfantepenaeus paulensis pink-shrimp specimens and 48 water samples were collected from coastal lagoons between June 2012 and May 2013. Water samples were concentrated and the shrimp, mashed. After DNA extraction, samples were analyzed by real time polymerase chain reaction (qPCR) in order to detect and quantify viral genomes. Thirty-five percent of shrimp samples were positive for contamination, predominantly by avian adenoviruses. A total of 91.7% of water samples contained adenoviruses DNA, with the human form being the most frequent. Our results provided evidence of significant bioaccumulation of adenoviruses in shrimp, showing the extent of the impact of fecal pollution on aquatic ecosystems. PMID:26413052

  11. 78 FR 14069 - Fisheries of the Caribbean, Gulf of Mexico, and South Atlantic; Shrimp Fishery Off the Southern...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-03-04

    ...Gulf of Mexico, and South Atlantic; Shrimp Fishery Off the Southern Atlantic States...to the Fishery Management Plan for the Shrimp Fishery of the South Atlantic Region...request a concurrent closure of the penaeid shrimp (brown, pink, and white shrimp)...

  12. Emerging viral diseases of fish and shrimp

    USGS Publications Warehouse

    Winton, James R.; Walker, Peter J.

    2010-01-01

    The rise of aquaculture has been one of the most profound changes in global food production of the past 100 years. Driven by population growth, rising demand for seafood and a levelling of production from capture fisheries, the practice of farming aquatic animals has expanded rapidly to become a major global industry. Aquaculture is now integral to the economies of many countries. It has provided employment and been a major driver of socio-economic development in poor rural and coastal communities, particularly in Asia, and has relieved pressure on the sustainability of the natural harvest from our rivers, lakes and oceans. However, the rapid growth of aquaculture has also been the source of anthropogenic change on a massive scale. Aquatic animals have been displaced from their natural environment, cultured in high density, exposed to environmental stress, provided artificial or unnatural feeds, and a prolific global trade has developed in both live aquatic animals and their products. At the same time, over-exploitation of fisheries and anthropogenic stress on aquatic ecosystems has placed pressure on wild fish populations. Not surprisingly, the consequence has been the emergence and spread of an increasing array of new diseases. This review examines the rise and characteristics of aquaculture, the major viral pathogens of fish and shrimp and their impacts, and the particular characteristics of disease emergence in an aquatic, rather than terrestrial, context. It also considers the potential for future disease emergence in aquatic animals as aquaculture continues to expand and faces the challenges presented by climate change.

  13. Cloning of profilin (FcPFN) from the shrimp Fenneropenaeus chinensis, a highly expressed protein in white spot syndrome virus (WSSV)-infected shrimp.

    PubMed

    Kong, H J; Hong, G-E; Cho, H K; Nam, B-H; Kim, Y-O; Kim, W-J; Lee, S-J; Kim, K-K

    2009-01-01

    We isolated and characterized the profilin (FcPFN) cDNA from hemocytes of Fenneropenaeus chinensis, a unique shrimp species from the Yellow Sea. The FcPFN cDNA consists of 830 bp and encodes a polypeptide of 125 amino acids, having a predicted isoelectric point of 5.06. The deduced amino acid sequence of FcPFN shows 36% and 90% amino acid sequence identity to the profilin genes of Pacific white shrimp Litopenaeus vannamei and black tiger shrimp Penaeus monodon, respectively. The FcPFN mRNA was highly expressed in hemocytes and hepatopancreas and moderately in muscle of normal shrimp. The higher expression of FcPFN mRNA is observed in shrimp infected with the white spot syndrome virus (WSSV), which is a major concern in all shrimp-growing regions of the world. These results suggest a potential role for FcPFN in viral host defense mechanisms. PMID:19638679

  14. Polyculture of penaeid shrimp in ponds receiving brackish heated effluent from a power plant

    SciTech Connect

    Ojeda, J.L.W.

    1983-01-01

    White shrimp Penaeus setiferus, were grown in monoculture or in polyculture with blue shrimp P. stylirostris, or striped mullet Mugil cephalus in 0.1-ha earthen ponds receiving heated effluent from the Houston Lighting and Power Company's Cedar Bayou Generating Station east of Baytown, Texas during 1978 and 1979. No detrimental effect of either species on white shrimp survival or yield was found. Blue shrimp was greater than that of white shrimp in the same ponds. Total yield was increased by polyculture. An experiment was performed in which blue shrimp were stocked conventionally into ponds, or stocked in three successive increments (staggered stocking study). A preliminary experiment was made in 1978, followed by a more expanded version in 1979. Staggered stocking increased pond yields compared to expected values from the control pond yields. There was no detrimental effect of staggered stocking on shrimp survival. Pond salinities were much lower in 1979 than in 1978, associated with lower shrimp growth, survival and yield. A distribution study performed in the staggered stocking study ponds revealed that blue shrimp in mixed-size culture tend to segregate by size, and that small shrimp show somewhat different distribution patterns and temporal activity patterns than large shrimp. All the organisms used also served as biological monitors of water quality. No detectable levels of pesticides were found in any of the cultured animals. The only heavy metal found in higher concentrations than in previous years at this site was chromium.

  15. The effects of a thermophile metabolite, tryptophol, upon protecting shrimp against white spot syndrome virus.

    PubMed

    Zhu, Fei; Jin, Min

    2015-12-01

    White spot syndrome virus (WSSV) is a shrimp pathogen responsible for significant economic loss in commercial shrimp farms and until now, there has been no effective approach to control this disease. In this study, tryptophol (indole-3-ethanol) was identified as a metabolite involved in bacteriophage-thermophile interactions. The dietary addition of tryptophol reduced the mortality in shrimp Marsupenaeus japonicus when orally challenged with WSSV. Our results revealed that 50 mg/kg tryptophol has a better protective effect in shrimp than 10 or 100 mg/kg tryptophol. WSSV copies in shrimp were reduced significantly (P < 0.01) when supplemented with 50 mg/kg tryptophol, indicating that virus replication was inhibited by tryptophol. Consequently, tryptophol represents an effective antiviral dietary supplement for shrimp, and thus holds significant promise as a novel and efficient therapeutic approach to control WSSV in shrimp aquaculture. PMID:26492993

  16. Emerging viral diseases of fish and shrimp

    PubMed Central

    Walker, Peter J.; Winton, James R.

    2010-01-01

    The rise of aquaculture has been one of the most profound changes in global food production of the past 100 years. Driven by population growth, rising demand for seafood and a levelling of production from capture fisheries, the practice of farming aquatic animals has expanded rapidly to become a major global industry. Aquaculture is now integral to the economies of many countries. It has provided employment and been a major driver of socio-economic development in poor rural and coastal communities, particularly in Asia, and has relieved pressure on the sustainability of the natural harvest from our rivers, lakes and oceans. However, the rapid growth of aquaculture has also been the source of anthropogenic change on a massive scale. Aquatic animals have been displaced from their natural environment, cultured in high density, exposed to environmental stress, provided artificial or unnatural feeds, and a prolific global trade has developed in both live aquatic animals and their products. At the same time, over-exploitation of fisheries and anthropogenic stress on aquatic ecosystems has placed pressure on wild fish populations. Not surprisingly, the consequence has been the emergence and spread of an increasing array of new diseases. This review examines the rise and characteristics of aquaculture, the major viral pathogens of fish and shrimp and their impacts, and the particular characteristics of disease emergence in an aquatic, rather than terrestrial, context. It also considers the potential for future disease emergence in aquatic animals as aquaculture continues to expand and faces the challenges presented by climate change. PMID:20409453

  17. Neuropilar Projections of the Anterior Gastric Receptor Neuron in the Stomatogastric Ganglion of the Jonah Crab, Cancer Borealis

    PubMed Central

    Goeritz, Marie L.; Bowers, Matthew R.; Slepian, Brian; Marder, Eve

    2013-01-01

    Sensory neurons provide important feedback to pattern-generating motor systems. In the crustacean stomatogastric nervous system (STNS), feedback from the anterior gastric receptor (AGR), a muscle receptor neuron, shapes the activity of motor circuits in the stomatogastric ganglion (STG) via polysynaptic pathways involving anterior ganglia. The AGR soma is located in the dorsal ventricular nerve posterior to the STG and it has been thought that its axon passes through the STG without making contacts. Using high-resolution confocal microscopy with dye-filled neurons, we show here that AGR from the crab Cancer borealis also has local projections within the STG and that these projections form candidate contact sites with STG motor neurons or with descending input fibers from other ganglia. We develop and exploit a new masking method that allows us to potentially separate presynaptic and postsynaptic staining of synaptic markers. The AGR processes in the STG show diversity in shape, number of branches and branching structure. The number of AGR projections in the STG ranges from one to three simple to multiply branched processes. The projections come in close contact with gastric motor neurons and descending neurons and may also be electrically coupled to other neurons of the STNS. Thus, in addition to well described long-loop pathways, it is possible that AGR is involved in integration and pattern regulation directly in the STG. PMID:24312448

  18. Long-term Spatial and Temporal Variations of Aurora Borealis Events in the Period 1700--1905

    E-print Network

    Vázquez, M; Gallego, M C

    2013-01-01

    Catalogues and other records of aurora-borealis events were used to study the long-term spatial and temporal variation of these phenomena in the period from 1700 to 1905 in the Northern Hemisphere. For this purpose, geographic and geomagnetic coordinates were assigned to approximately 27 000 auroral events with more than 80 000 observations. They were analysed separately in three large-scale areas: i) Europe and North Africa, ii) North America, and iii) Asia. There was a clear need to fill some gaps existing in the records so as to have a reliable proxy of solar activity, especially during the 18th century. In order to enhance the long-term variability, an 11-year smoothing window was applied to the data. Variations in the cumulative numbers of auroral events with latitude (in both geographic and geomagnetic coordinates) were used to discriminate between the two main solar sources: coronal mass ejections and high-speed streams from coronal holes. The characteristics of the associated aurorae correlate differe...

  19. Genetic approaches to the conservation of migratory bats: a study of the eastern red bat (Lasiurus borealis)

    PubMed Central

    Russell, Amy L.

    2015-01-01

    Documented fatalities of bats at wind turbines have raised serious concerns about the future impacts of increased wind power development on populations of migratory bat species. However, for most bat species we have no knowledge of the size of populations and their demographic trends, the degree of structuring into discrete subpopulations, and whether different subpopulations use spatially segregated migratory routes. Here, we utilize genetic data from eastern red bats (Lasiurus borealis), one of the species most highly affected by wind power development in North America, to (1) evaluate patterns of population structure across the landscape, (2) estimate effective population size (Ne), and (3) assess signals of growth or decline in population size. Using data on both nuclear and mitochondrial DNA variation, we demonstrate that this species forms a single, panmictic population across their range with no evidence for the historical use of divergent migratory pathways by any portion of the population. Further, using coalescent estimates we estimate that the effective size of this population is in the hundreds of thousands to millions of individuals. The high levels of gene flow and connectivity across the population of eastern red bats indicate that monitoring and management of eastern red bats must integrate information across the range of this species. PMID:26038736

  20. Genetic approaches to the conservation of migratory bats: a study of the eastern red bat (Lasiurus borealis).

    PubMed

    Vonhof, Maarten J; Russell, Amy L

    2015-01-01

    Documented fatalities of bats at wind turbines have raised serious concerns about the future impacts of increased wind power development on populations of migratory bat species. However, for most bat species we have no knowledge of the size of populations and their demographic trends, the degree of structuring into discrete subpopulations, and whether different subpopulations use spatially segregated migratory routes. Here, we utilize genetic data from eastern red bats (Lasiurus borealis), one of the species most highly affected by wind power development in North America, to (1) evaluate patterns of population structure across the landscape, (2) estimate effective population size (Ne ), and (3) assess signals of growth or decline in population size. Using data on both nuclear and mitochondrial DNA variation, we demonstrate that this species forms a single, panmictic population across their range with no evidence for the historical use of divergent migratory pathways by any portion of the population. Further, using coalescent estimates we estimate that the effective size of this population is in the hundreds of thousands to millions of individuals. The high levels of gene flow and connectivity across the population of eastern red bats indicate that monitoring and management of eastern red bats must integrate information across the range of this species. PMID:26038736

  1. Biology and life cycle of Natatolana borealis Lilj.1851, a scavenging isopod from the continental slope of the Mediterranean

    NASA Astrophysics Data System (ADS)

    Kaïm-Malka, R. A.

    1997-12-01

    The biology of Natatolana borealis, a deep-sea (-500 m) scavenging isopod that lives on the continental slope of Mediterranean canyons, was studied in the field and in the laboratory. Animals were collected at two stations using a baited trap. Whatever the site at which the animals were collected, a strong correlation was always found to exist between their length and weight, which shows variably marked seasonal variations. The growth pattern was modelled by fitting the Von Bertalanffy growth equation to the length of animals of various ages. The lifespan was estimated to be 6 years in the case of the largest animals collected. Sexual maturity is presumably reached at the age of 2.5 years. Not all the females were found to be sexually active at the same period of the year. A scheme of reproductive cycle is proposed for the mature females. It seems likely that each female may produce at least four broods during her lifetime. The emergence of offspring occurs at various times throughout the year, resulting in successive cohorts. At some periods in the year, some developmental stages were lacking in the samples, possibly owing to alimentary behaviour that helps to protect the animals from predators.

  2. Sexual segregation of Echinorhynchus borealis von Linstow, 1901 (Acanthocephala) in the gut of burbot (Lota lota Linnaeus).

    PubMed

    Tuomainen, Arto; Tellervo Valtonen, E; Benesh, Daniel P

    2015-01-01

    Helminths often occupy defined niches in the gut of their definitive hosts. In the dioecious acanthocephalans, adult males and females usually have similar gut distributions, but sexual site segregation has been reported in at least some species. We studied the intestinal distribution of the acanthocephalan Echinorhynchus borealis von Linstow, 1901 (syn. of E. cinctulus Porta, 1905) in its definitive host, burbot (Lota lota Linnaeus). Over 80% of female worms were found in the pyloric caeca, whereas the majority of males were in the anterior two-thirds of the intestine. This difference was relatively consistent between individual fish hosts. Worms from different parts of the gut did not differ in length, so site segregation was not obviously related to worm growth or age. We found proportionally more males in the caeca when a larger fraction of the females were found there, suggesting mating opportunities influence gut distribution. However, this result relied on a single parasite infrapopulation and is thus tentative. We discuss how mating strategies and/or sexual differences in life history might explain why males and females occupy different parts of the burbot gut. PMID:26580557

  3. Talking about Brine Shrimps: Three Ways of Analysing Pupil Conversations.

    ERIC Educational Resources Information Center

    Tunnicliffe, Sue Dale; Reiss, Michael J.

    1999-01-01

    Applies three distinct analyses to recorded and transcribed student conversations (n=240) about brine shrimps. The complementary analytic methods provide information on the content of pupils' conversations in terms of the observations made, the ways in which pupils make sense of their observations, and the ways in which students use conversation…

  4. Brine Shrimp and Their Habitat, An Environmental Investigation.

    ERIC Educational Resources Information Center

    National Wildlife Federation, Washington, DC.

    This environmental unit is one of a series designed for integration within the existing curriculum. The unit is self-contained and students are encouraged to work at their own speed. The philosophy of the unit is based on an experience-oriented process that encourages independent student work. This unit explores the life cycle of brine shrimp and…

  5. MFR REPRINT 974 The spot shrimp is the largest

    E-print Network

    of 21 m-and within the bay, the spot shrimp inhabit only the relatively hard-bottom, kelp inactive and hidden un- der kelp fronds or in crevices among the rocks; at night they were o ut in the open was photographed at night while on a heavily encrusted kelp frond. A diver observes the behavior of a group of spot

  6. CO2 Efflux from Shrimp Ponds in Indonesia

    PubMed Central

    Sidik, Frida; Lovelock, Catherine E.

    2013-01-01

    The conversion of mangrove forest to aquaculture ponds has been increasing in recent decades. One of major concerns of this habitat loss is the release of stored ‘blue’ carbon from mangrove soils to the atmosphere. In this study, we assessed carbon dioxide (CO2) efflux from soil in intensive shrimp ponds in Bali, Indonesia. We measured CO2 efflux from the floors and walls of shrimp ponds. Rates of CO2 efflux within shrimp ponds were 4.37 kg CO2 m?2 y?1 from the walls and 1.60 kg CO2 m?2 y?1 from the floors. Combining our findings with published data of aquaculture land use in Indonesia, we estimated that shrimp ponds in this region result in CO2 emissions to the atmosphere between 5.76 and 13.95 Tg y?1. The results indicate that conversion of mangrove forests to aquaculture ponds contributes to greenhouse gas emissions that are comparable to peat forest conversion to other land uses in Indonesia. Higher magnitudes of CO2 emission may be released to atmosphere where ponds are constructed in newly cleared mangrove forests. This study indicates the need for incentives that can meet the target of aquaculture industry without expanding the converted mangrove areas, which will lead to increased CO2 released to atmosphere. PMID:23755306

  7. The Lobster and Shrimp Fisheries in Hawaii The Lobster Fishery

    E-print Network

    The Lobster and Shrimp Fisheries in Hawaii The Lobster Fishery Introduction The commercial lobster fishery in Hawaii is a trap fishery which harvests several lobster species in the North western Hawaiian, from Nihoa Island to Kure Atoll (Fig. 1). The fishery targets two species: the endemic spiny lobster

  8. Production of low-fat shrimps by using hydrocolloid coatings.

    PubMed

    Izadi, S; Ojagh, S M; Rahmanifarah, K; Shabanpour, B; Sakhale, B K

    2015-09-01

    Production of low-fat fried foods by using hydrocolloid coatings is a common method to avoid excessive oil absorption during deep-fat frying. The aim of this work was to evaluate the influence of hydrocolloid coatings (carboxymethyl cellulose, guar, tragacanth and zedo gum) on the oil content and quality parameters of shrimp after deep-fat frying. The hydrocolloid solutions (0.5, 1.0 and 1.5 %?w/v) were used for coating. Coated and uncoated (control) samples were packaged and stored at -20 and after a week were fried at 170 °C for 90 s in sunflower oil. The results showed that all hydrocolloid coatings reduced oil content of fried shrimp. The coated shrimps with 1.5 % tragacanth solution had highest coating pick up and moisture content, and lowest oil content than the other samples. The coated samples had darker color and softer texture than the control sample. Sensory evaluation indicated that all coated and uncoated shrimps were acceptable. PMID:26345025

  9. Soybean meal, distillers grains replace fishmeal in experimental shrimp diets

    Technology Transfer Automated Retrieval System (TEKTRAN)

    The objective of this study was to evaluate inclusion of distiller’s dried grains with solubles (DDGS) as partial replacement of commercial, solvent-extracted soybean meal (SBM) in fish meal-free diets for Pacific white shrimp, Litopenaeus vannamei. Aquaria connected to a recirculating biofiltratio...

  10. Diel and Seasonal Occurrence of Pink Shrimp, Penaeus duorarum

    E-print Network

    transmission, and activity in relation to moon phase. Catches were larger during darkness and rose of transmitted light. In dark phases of the moon greater numbers of shrimp were caught than during light phases and their abundance in relation to biological and hydrological factors. The importance of understanding inshore

  11. ADDITIONAL REFERENCES ON THE BIOLOGY OF SHRIMP, FAMILY PENAEIDAE 1

    E-print Network

    . 'VISBY. 1964. Effects of light and moon phase on the be- havior of pink shrimp. Proc. Gulf Carib. Fish the published citations. The~e un- published reports are presented to indicate addi- tional sources of pertinent intensity light. M.S. thesis, Univ. Miami, Coral Gables, Fla., 85 pp. AARON. RICHARD L .· and ·WARREN J

  12. 21 CFR 161.175 - Frozen raw breaded shrimp.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... for composite units held in storage at 0 °F). If the composite units were prepared using batters that... 21 Food and Drugs 2 2010-04-01 2010-04-01 false Frozen raw breaded shrimp. 161.175 Section 161.175 Food and Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED)...

  13. 21 CFR 161.175 - Frozen raw breaded shrimp.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... for composite units held in storage at 0 °F). If the composite units were prepared using batters that... 21 Food and Drugs 2 2011-04-01 2011-04-01 false Frozen raw breaded shrimp. 161.175 Section 161.175 Food and Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED)...

  14. FOOD PATHWAYS ASSOCIATED WITH PENAEID SHRIMPS IN A MANGROVEFRINGED ESTUARY

    E-print Network

    FOOD PATHWAYS ASSOCIATED WITH PENAEID SHRIMPS IN A MANGROVE·FRINGED ESTUARY ALLAN W. STONERl AND Ro estuaries has been attributed to high concentrations of mangrove-derived detritus in the nursery habitats. Examination of the diets ofPII7UUl'UIl noOO/is, P. subti/is, and P. braBiliensis in the mangrove

  15. LIST OF REFERENCES ON THE BIOLOGY OF SHRIMP

    E-print Network

    --Fisheries No, 276 Washington, D. C. January 1959 #12;The Library of Congress has cataloged this publication. Fisheries--Research. SH11.A335 639.2072 59-60217 Library of Congress #12;CONTENTS Page Introduction. Shrimps--Bibl. i. Allen, Donald M., joint author, ( Series) SH11.A335 110.276 016.5953843 59-60382 Library

  16. Bringing Scientific Inquiry Alive Using Real Grass Shrimp Research

    ERIC Educational Resources Information Center

    Aultman, Terry; Curran, Mary Carla; Partridge, Michael

    2010-01-01

    This lesson was developed for middle school students using actual research on grass shrimp ("Palaemonetes pugio") to illustrate the process of a scientific investigation. The research was conducted at Savannah State University and funded by the National Oceanic and Atmospheric Administration (NOAA) Office of Education through the Living Marine…

  17. Recent population expansion and connectivity in the hydrothermal shrimp

    E-print Network

    Borges, Rita

    -sea hydrothermal vents are unstable habitats that are both spatially and temporally fragmented. In vent species of the shrimp Rimicaris exoculata, which forms high-density local populations on hydrothermal vents along the Mid-Atlantic ridge. Location Deep-sea hydrothermal vents along the Mid-Atlantic Ridge. Methods We used

  18. DOUBLE-RIG SHRIMP TRAWLING IN THE GULF OF MEXICO

    E-print Network

    , others in the industry became interested and many have subsequently contributed to the successful are frequently made by members of the shrimp industry. #12;/ Figure 1 - DetailS of the rigging arrangementsO) on trawl winch. O. Center drum for try net wire. Q. Towing wire. R. ~ading block for try net. 8-1, 8-2, S-3

  19. ,SHRIMP RESEARCH ABOARD SOVIET SHIP IN GULF OF ALASKA

    E-print Network

    . The Research Vessels Vessels assigned to the research effort were the 'Krill' of the USSR Pacific Scientif- ic in the USSR in 1968. It is a typical Mayak -class side trawler. Overall length is 178 ft, beam 30 ft indicates the area surveyed by the Soviet research vessel Krill during the Joint U . S . -USSR shrimp

  20. Detection of shrimp-derived components in food by real-time fluorescent PCR.

    PubMed

    Cao, Jijuan; Yu, Bing; Ma, Lidan; Zheng, Qiuyue; Zhao, Xin; Xu, Junyi

    2011-10-01

    Crustaceans such as shrimp and crabs and their products are important allergens in food, and allergic reactions due to the consumption of shrimp and crabs are frequently reported. However, the chemical properties of shrimp-derived allergens, except for Pen a I, are still unclear. Therefore, it is important to establish a more sensitive and specific method for detecting the composition of foods containing shrimp. In the present study, we developed a real-time fluorescent PCR to identify the specific shrimp-derived components in food. The primers and TaqMan probes for real-time fluorescent PCR were designed based on 16S rRNA genes through comparing a large number of nucleic acid sequences from different species of shrimp that have been published by the National Center for Biotechnology Information. In total, 56 kinds of samples, including different kinds of shrimp, crab, fish, shellfish, and octopus, were subjected to detection by real-time PCR. The results indicated that real-time fluorescent PCR could successfully identify the shrimp-derived components. In order to explore the effect of food processing on detection sensitivity, fish powder containing shrimp powder was treated by heating at 133°C for 30 min. The limit of detection of shrimp-derived components in fish powder was 0.05% (wt/wt). PMID:22004830

  1. Fish and opossum shrimp entrainment in the Mt. Elbert Pumped-Storage Power Plant

    SciTech Connect

    Maiolie, M.A.

    1987-01-01

    Impacts of operating the Mt. Elbert Pumped-Storage Power Plant on fish and opossum shrimp (mysis relicta) were investigated from 1981 to 1985 at Twin Lakes, Colorado to determine any negative effects on the Twin Lakes fishery. Daytime generation cycles entrained shrimp at densities averaging 0.05 to 0.23 shrimp/m/sup 3/ of discharge. Eight hour daytime generation cycles would entrain 50,000 to 300,000 shrimp at these rates. Generation cycles which occurred after dark entrained many times more shrimp with densities as high as 1.21 shrimp/m/sup 3/ of discharge. Entrainment density during nighttime pump-back cycles was much greater; averaging 2 to 17 shrimp/m/sup 3/ discharged. Six to 44 million shrimp were entrained during typical 8 h pump-back cycles. Differences between daytime and nighttime entrainment rates appeared to be caused by migration of shrimp into the water column at night making them more vulnerable to entrainment. Losses were estimated to have reduced Lower Twin Lake shrimp abundance by 39% in 1985.

  2. Vaccination Enhances Early Immune Responses in White Shrimp Litopenaeus vannamei after Secondary Exposure to Vibrio alginolyticus

    PubMed Central

    Lin, Yong-Chin; Chen, Jiann-Chu; Morni, Wan Zabidii W.; Putra, Dedi Fazriansyah; Huang, Chien-Lun; Li, Chang-Che; Hsieh, Jen-Fang

    2013-01-01

    Background Recent work suggested that the presence of specific memory or some form of adaptive immunity occurs in insects and shrimp. Hypervariable pattern recognition molecules, known as Down syndrome cell adhesion molecules, are able to mount specific recognition, and immune priming in invertebrates. In the present study, we attempted to understand the immune response pattern of white shrimp Litopenaeus vannamei which received primary (PE) and secondary exposure (SE) to Vibrio alginolyticus. Methodology Immune parameters and proliferation of haematopoietic tissues (HPTs) of shrimp which had received PE and SE to V. alginolyticus were measured. In the PE trial, the immune parameters and proliferation of HPTs of shrimp that received heat-killed V. alginolyticus (HVa) and formalin-inactivated V. alginolyticus (FVa) were measured. Mortality, immune parameters and proliferation of HPTs of 7-day-HVa-PE shrimp (shrimp that received primary exposure to HVa after 7 days) and 7-day-FVa-PE shrimp (shrimp that received primary exposure to FVa after 7 days) following SE to live V. alginolyticus (LVa) were measured. Phagocytic activity and clearance efficiency were examined for the 7?35-day-HVa-PE and FVa-PE shrimp. Results HVa-receiving shrimp showed an earlier increase in the immune response on day 1, whereas FVa-receiving shrimp showed a late increase in the immune response on day 5. The 7-day-FVa-PE shrimp showed enhancement of immunity when encountering SE to LVa, whereas 7-day-HVa-PE shrimp showed a minor enhancement in immunity. 7-day-FVa-PE shrimp showed higher proliferation and an HPT mitotic index. Both phagocytic activity and clearance maintained higher for both HVa-PE and FVa-PE shrimp after 28 days. Conclusions HVa- and FVa-receiving shrimp showed the bacteria agglutinated prior to being phagocytised. FVa functions as a vaccine, whereas HVa functions as an inducer and can be used as an immune adjuvant. A combined mixture of FVa and HVa can serve as a “vaccine component” to modulate the immunity of shrimp. PMID:23894531

  3. Elemental abundance analyses with coadded DAO spectrograms. VI - The mercury-manganese stars Nu Cancri, Iota Coronae Borealis and HR 8349

    NASA Technical Reports Server (NTRS)

    Adelman, Saul J.

    1989-01-01

    The elemental abundances of three mercury-manganese stars, Nu Cancri, Iota Coronae Borealis, and HR 8349, were found to be consistent with previous analyses of this series. As Iota CrB is a double-lined spectroscopic binary with a small velocity amplitude for most of its period, its study required determining whether the observed lines were produced in the primary or secondary or both. The derived abundances and effective termperatures were used along with those of mercury-manganese stars previously analyzed in order to extend the study of probable correlations between abundances, with the effective temperature and surface gravity in accordance with radiative diffusion explanations.

  4. The Effect of Copper on the Color of Shrimps: Redder Is Not Always Healthier

    PubMed Central

    Martínez, Ana; Romero, Yanet; Castillo, Tania; Mascaró, Maite; López-Rull, Isabel; Simões, Nuno; Arcega-Cabrera, Flor; Gaxiola, Gabriela; Barbosa, Andrés

    2014-01-01

    The objective of this research is to test the effects of copper on the color of pacific white shrimp (Litopenaeus vannamei) in vivo. Forty-eight shrimps (L. vannamei) were exposed to a low concentration of copper (1 mg/L; experimental treatment) and forty-eight shrimps were used as controls (no copper added to the water). As a result of this experiment, it was found that shrimps with more copper are significantly redder than those designated as controls (hue (500–700 nm): P?=?0.0015; red chroma (625–700 nm): P<0.0001). These results indicate that redder color may result from exposure to copper and challenge the commonly held view that highly pigmented shrimps are healthier than pale shrimps. PMID:25229639

  5. Biological control of Culex mosquitoes (Diptera: Culicidae) by the tadpole shrimp, Triops longicaudatus (Notostraca: Triopsidae).

    PubMed

    Tietze, N S; Mulla, M S

    1991-01-01

    Laboratory oviposition choice tests and behavioral observations indicated that the activity of tadpole shrimp, Triops longicaudatus (LeConte), near the water surface deterred gravid Culex quinquefasciatus Say from ovipositing. In the cities of Oasis and Riverside, Calif., tadpole shrimp significantly reduced the abundance of immature mosquitoes (Cx. tarsalis Coquillett and Cx. quinquefasciatus) probably due to lowered oviposition rates, as well as tadpole shrimp predation. Generally, mosquito oviposition rates in field ponds with tadpole shrimp were lower than that of controls, except when tadpole shrimp were very young (4 d after flooding) or when their abundance had declined late in the flooding period. When analyzed by pond, tadpole shrimp size was correlated inversely with abundance; however, differences in size or abundance did not affect their capacity to reduce mosquito populations. PMID:2033616

  6. Long Term Monitoring of Grass Shrimp Palaemonetes spp. Population Metrics at Sites with Agricultural Runoff Influences.

    PubMed

    Leight, Andrew K; Scott, Geoffrey I; Fulton, Michael H; Daugomah, James W

    2005-01-01

    Rising concern over pesticide usage near estuarine systems and evidence of physical and physiological impacts on estuarine organisms have strengthened the need to better identify the ecological effects of nonpoint source runoff. Grass shrimp, Palaemonetes spp., are ecologically important and abundant marsh inhabitants that may be impacted by anthropogenic contamination. Populations of grass shrimp were sampled monthly, over a period of ten years, at four sites in South Carolina with varying upland land use characteristics. Spatial and temporal trends in grass shrimp densities were noted over time and between sites. Agricultural and golf course land usage corresponded with decreased grass shrimp population levels, overall shrimp size, and percentage of gravid females. Conservation methods, such as the use of best management practices (BMPs) and integrated pesticide management (IPM) at agricultural fields, corresponded with increased grass shrimp population density. PMID:21676755

  7. Structure and functions of the placenta in common minke (Balaenoptera acutorostrata), Bryde's (B. brydei) and sei (B. borealis) whales.

    PubMed

    Kitayama, Chiyo; Sasaki, Motoki; Ishikawa, Hajime; Mogoe, Toshihiro; Ohsumi, Seiji; Fukui, Yutaka; Budipitojo, Teguh; Kondoh, Daisuke; Kitamura, Nobuo

    2015-10-21

    The structure and functions of placentas were examined in 3 species of rorqual whales, common minke (Balaenoptera acutorostrata), Bryde's (B. brydei) and sei (B. borealis) whales, with the aim of confirming the structural characteristics of the chorion, including the presence of the areolar part, and clarifying steroidogenic activities and fetomaternal interactions in the placentas of these whales. Placentas were collected from the second phase of the Japanese Whale Research Program under Special Permit in the North Pacific (JARPN II). Histological and ultrastructural examinations revealed that these whale placentas were epitheliochorial placentas with the interdigitation of chorionic villi lined by monolayer uninucleate cells (trophoblast cells) and endometrial crypts as well as folded placentation by fold-like chorionic villi. Moreover, well-developed pouch-like areolae were observed in the placentas, and active absorption was suggested in the chorionic epithelial cells of the areolar part (areolar trophoblast cells). Berlin blue staining showed the presence of ferric ions (Fe(3+)) in the uterine glandular epithelial cells and within the stroma of chorionic villi in the areolar part. An immunohistochemical examination revealed tartrate-resistant acid phosphatase (TRAP; known as uteroferrin in uteri) in the cytoplasm of glandular cells and areolar trophoblast cells. This result suggested that, in cetaceans, uteroferrin is used to supply iron to the fetus. Furthermore, immunoreactivity for P450scc and P450arom was detected in trophoblast cells, but not in areolar trophoblast cells, suggesting that trophoblast cells synthesize estrogen in whale placentas. Therefore, we herein immunohistochemically revealed the localization of aromatase and uteroferrin in cetacean placentas during pregnancy for the first time. PMID:26096685

  8. The Visual Orbit of the 1.1-day Spectroscopic Binary ?^2 Coronae Borealis from Interferometry at the CHARA Array

    E-print Network

    Deepak Raghavan; Harold A. McAlister; Guillermo Torres; David W. Latham; Brian D. Mason; Tabetha S. Boyajian; Ellyn K. Baines; Stephen J. Williams; Theo A. ten Brummelaar; Chris D. Farrington; Stephen T. Ridgway; Laszlo Sturmann; Judit Sturmann; Nils H. Turner

    2008-08-29

    We present an updated spectroscopic orbit and a new visual orbit for the double-lined spectroscopic binary \\sigma^2 Coronae Borealis based on radial velocity measurements at the Oak Ridge Observatory in Harvard, Massachusetts and interferometric visibility measurements at the CHARA Array on Mount Wilson. \\sigma^2 CrB is composed of two Sun-like stars of roughly equal mass in a circularized orbit with a period of 1.14 days. The long baselines of the CHARA Array have allowed us to resolve the visual orbit for this pair, the shortest period binary yet resolved interferometrically, enabling us to determine component masses of 1.137 \\pm 0.037 M_sun and 1.090 \\pm 0.036 M_sun. We have also estimated absolute V-band magnitudes of MV (primary) = 4.35 \\pm 0.02 and MV(secondary) = 4.74 \\pm 0.02. A comparison with stellar evolution models indicates a relatively young age of 1-3 Gyr, consistent with the high Li abundance measured previously. This pair is the central component of a quintuple system, along with another similar-mass star, \\sigma^1 CrB, in a ~ 730-year visual orbit, and a distant M-dwarf binary, \\sigma CrB C, at a projected separation of ~ 10 arcmin. We also present differential proper motion evidence to show that components C & D (ADS 9979C & D) listed for this system in the Washington Double Star Catalog are optical alignments that are not gravitationally bound to the \\sigma CrB system.

  9. The Visual Orbit of the 1.1 Day Spectroscopic Binary ?2 Coronae Borealis from Interferometry at the Chara Array

    NASA Astrophysics Data System (ADS)

    Raghavan, Deepak; McAlister, Harold A.; Torres, Guillermo; Latham, David W.; Mason, Brian D.; Boyajian, Tabetha S.; Baines, Ellyn K.; Williams, Stephen J.; ten Brummelaar, Theo A.; Farrington, Chris D.; Ridgway, Stephen T.; Sturmann, Laszlo; Sturmann, Judit; Turner, Nils H.

    2009-01-01

    We present an updated spectroscopic orbit and a new visual orbit for the double-lined spectroscopic binary ?2 Coronae Borealis (CrB) based on radial velocity measurements at the Oak Ridge Observatory in Harvard, MA and interferometric visibility measurements at the Center for High Angular Resolution Astronomy (CHARA) Array on Mount Wilson in California. ?2 CrB is composed of two Sun-like stars of roughly equal mass in a circularized orbit with a period of 1.14 days. The long baselines of the CHARA Array have allowed us to resolve the visual orbit for this pair, the shortest-period binary yet resolved interferometrically, enabling us to determine component masses of 1.137 ± 0.037 M sun and 1.090 ± 0.036 M sun. We have also estimated absolute V-band magnitudes of M V(primary) = 4.35 ± 0.02 and M V(secondary) = 4.74 ± 0.02. A comparison with stellar evolution models indicates a relatively young age of 0.1-3 Gyr, consistent with the high-Li abundance measured previously. This pair is the central component of a quintuple system, along with another similar-mass star, ?1 CrB, in a ~730-year visual orbit, and a distant M-dwarf binary, ? CrB C, at a projected separation of ~10'. We also present differential proper motion evidence to show that components C & D (ADS 9979C & D) listed for this system in the Washington Double Star Catalog are optical alignments that are not gravitationally bound to the ? CrB system.

  10. Ecological limitations and appropriation of ecosystem support by shrimp farming in Colombia

    NASA Astrophysics Data System (ADS)

    Larsson, Jonas; Folke, Carl; Kautsky, Nils

    1994-09-01

    Shrimp farming in mangrove areas has grown dramatically in Asia and Latin America over the past decade. As a result, demand for resources required for farming, such as feed, seed, and clean water, has increased substantially. This study focuses on semiintensive shrimp culture as practiced on the Caribbean coast of Colombia. We estimated the spatial ecosystem support that is required to produce the food inputs, nursery areas, and clean water to the shrimp farms, as well as to process wastes. We also made an estimate of the natural and human-made resources necessary to run a typical semiintensive shrimp farm. The results show that a semiintensive shrimp farm needs a spatial ecosystem support—the ecological footprint—that is 35-190 times larger than the surface area of the farm. A typical such shrimp farm appropriates about 295 J of ecological work for each joule of edible shrimp protein produced. The corresponding figure for industrial energy is 40:1. More than 80% of the ecological primary production required to feed the shrimps is derived from external ecosystems. In 1990 an area of 874-2300 km2 of mangrove was required to supply shrimp postlarvae to the farms in Colombia, corresponding to a total area equivalent to about 20-50% of the country’s total mangrove area. The results were compared with similar estimates for other food production systems, particularly aquacultural ones. The comparison indicates that shrimp farming ranks as one of the most resource-intensive food production systems, characterizing it as an ecologically unsustainable throughput system. Based on the results, we discuss local, national, and regional appropriation of ecological support by the semiintensive shrimp farms. Suggestions are made for how shrimp farming could be transformed into a food production system that is less environmentally degrading and less dependent on external support areas.

  11. Impact of Exposure to Bacteria on Metabolism in the Penaeid Shrimp Litopenaeus vannamei

    E-print Network

    Burnett, Louis E.

    in Litopenaeus vannamei, the Pacific white shrimp, following injection with either saline (control) or a strain by 27% (from 11.0 to 8.2 mol g 1 h 1 ) after 4 h, while saline-injected shrimp showed no change-animal lactic acid levels increased in shrimp injected with bacteria (mean 2.59 mol lactate g 1 0.39 SEM, n 8

  12. Physicochemical and Sensory Properties of Appenzeller Cheese Supplemented with Shrimp Powder

    PubMed Central

    Choi, Hee-Young; Kim, Kyoung-Hee; Chun, Soon-Sil

    2015-01-01

    The effects of adding shrimp (Periclimenes imperator) powder to Appenzeller cheese on quality and characteristics during ripening were investigated. Cheese samples were prepared containing 1.0%, 2.0%, and 3.0% shrimp powder. Changes in the lactic acid bacterial populations, pH, water-soluble nitrogen concentrations, consumer acceptability, colour and texture were monitored during ripening. The addition of shrimp powder did not affect the appearance or consumer sensory characteristics of the cheeses. Likewise, cheese cohesiveness, fracturability, and springiness were not significantly altered. It was concluded that the quality of the Appenzeller cheese was not affected by adding shrimp powder.

  13. Alterations in prey capture and induction of metallothioneins in grass shrimp fed cadmium-contaminated prey

    SciTech Connect

    Wallace, W.G.; Hoexum Brouwer, T.M.; Brouwer, M.; Lopez, G.R.

    2000-04-01

    The aquatic oligochaete Limnodrilus hoffmeisteri from a Cd-contaminated cove on the Hudson River, Foundry Cove, New York, USA, has evolved Cd resistance. Past studies have focused on how the mode of detoxification of Cd by these Cd-resistant worms influences Cd trophic transfer to the grass shrimp Palaemonetes pugio. In the present study, the authors investigate reductions in prey capture in grass shrimp fed Cd-contaminated prey. They also investigate the induction of metal-binding proteins, metallothioneins, in these Cd-exposed shrimp. Grass shrimp were fed field-exposed Cd-contaminated Foundry Cove oligochaetes or laboratory-exposed Cd-contaminated Artemia salina. Following these exposures, the ability of Cd- dosed and control shrimp to capture live A. salina was compared. Results show that shrimp fed laboratory-exposed Cd-contaminated A. salina for 2 weeks exhibit significant reductions in their ability to successfully capture prey (live A. salina). Reductions in prey capture were also apparent, though not as dramatic in shrimp fed for 1 week on field-exposed Cd-contained Foundry Cove oligochaetes. Shrimp were further investigated for their subcellular distribution of Cd to examine if alterations in prey capture could be linked to saturation of Cd-metallothionein. Cd-dosed shrimp produced a low molecular weight CD-binding metallothionein protein in a dose- and time-dependent manner. Most importantly, successful prey capture decreased with increased Cd body burdens and increased Cd concentration bound to high molecular weight proteins.

  14. Sound production by white shrimp (Penaeus setiferus) analysis of another crustacean-like sound from the Gulf of Mexico, and the possible use of passive sonar for dedication and stock assessment of shrimp 

    E-print Network

    Berk, Ilona M.

    1997-01-01

    Sound production by white shrimp (Penaeus setiferus) was studied acoustically and behaviorally. Another crustacean-like signal from the Gulf of Mexico was analyzed, and the use of passive sonar for the detection and stock assessment of shrimp...

  15. Developmental arrest in grass shrimp embryos exposed to selected toxicants

    SciTech Connect

    Wilson, J.E.H.

    1998-12-31

    Excised embryos of the grass shrimp (Palaemonetes pugio) were exposed to single pulse concentrations of selected pollutants for 4 days. The following toxicity endpoints were monitored: rate of embryonic development, embryo mortality, and types of embryo malformation. Each endpoint exhibited concentration--response relationships which were modified by the embryonic age at which exposure commenced. Developmental retardation of up to 3 days was effected by phenol at 0.01% (V/V) and complete developmental arrest occurred at 0.05% and 0.1% (V/V). Similarly for methylene chloride, developmental retardation of 1003 days were observed at 0.1% (V/V) depending on the age of the embryos at the start of the tests. The morphological abnormalities of the embryos are described. The ecological significance of these findings and implications for the development of short-term toxicity tests using grass shrimp embryos are discussed.

  16. Evolution of neural computations: Mantis shrimp and human color decoding

    PubMed Central

    Zaidi, Qasim; Marshall, Justin; Thoen, Hanne; Conway, Bevil R.

    2014-01-01

    Mantis shrimp and primates both possess good color vision, but the neural implementation in the two species is very different, a reflection of the largely unrelated evolutionary lineages of these creatures. Mantis shrimp have scanning compound eyes with 12 classes of photoreceptors, and have evolved a system to decode color information at the front-end of the sensory stream. Primates have image-focusing eyes with three classes of cones, and decode color further along the visual-processing hierarchy. Despite these differences, we report a fascinating parallel between the computational strategies at the color-decoding stage in the brains of stomatopods and primates. Both species appear to use narrowly tuned cells that support interval decoding color identification. PMID:26034560

  17. Shrimp Lipids: A Source of Cancer Chemopreventive Compounds

    PubMed Central

    López-Saiz, Carmen-María; Suárez-Jiménez, Guadalupe-Miroslava; Plascencia-Jatomea, Maribel; Burgos-Hernández, Armando

    2013-01-01

    Shrimp is one of the most popular seafoods worldwide, and its lipids have been studied for biological activity in both, muscle and exoskeleton. Free fatty acids, triglycerides, carotenoids, and other lipids integrate this fraction, and some of these compounds have been reported with cancer chemopreventive activities. Carotenoids and polyunsaturated fatty acids have been extensively studied for chemopreventive properties, in both in vivo and in vitro studies. Their mechanisms of action depend on the lipid chemical structure and include antioxidant, anti-proliferative, anti-mutagenic, and anti-inflammatory activities, among others. The purpose of this review is to lay groundwork for future research about the properties of the lipid fraction of shrimp. PMID:24135910

  18. IMPACT OF BURROWING SHRIMP POPULATIONS ON C, N CYCLING AND WATER QUALITY IN WESTERN NORTH AMERICAN TEMPERATE ESTUARIES

    EPA Science Inventory

    Thalassinid burrowing shrimp (predominantly, Neotrypaea californiensis and Upogebia pugettensis) inhabit large expanses of tide flats in North American Pacific estuaries, from British Columbia to Baja California. Feeding, burrowing, and burrow irrigation by burrowing shrimp can ...

  19. IMPACT OF BURROWING SHRIMP POPULATIONS ON NITROGEN CYCLING AND WATER QUALITY IN WESTERN NORTH AMERICAN TEMPERATE ESTUARIES

    EPA Science Inventory

    Thalassinid burrowing shrimp (predominantly, Neotrypaea californiensis and Upogebia pugettensis) inhabit large expanses of tide flats in North American Pacific estuaries, from British Columbia to Baja California. Feeding, burrowing, and burrow irrigation by burrowing shrimp can ...

  20. 78 FR 14069 - Fisheries of the Caribbean, Gulf of Mexico, and South Atlantic; Shrimp Fishery Off the Southern...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-03-04

    ... overfished and overfishing status determination criteria for pink shrimp. DATES: Written comments must be... closure. Overfished and Overfishing Status Determination Criteria for Pink Shrimp Amendment 9 would update the overfished and overfishing status determination criteria (biomass at maximum sustainable yield...

  1. 75 FR 28760 - Fisheries of the Caribbean, Gulf of Mexico, and South Atlantic; Shrimp Fishery of the Gulf of...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-05-24

    ...0648-AY58 Fisheries of the Caribbean, Gulf of Mexico, and South Atlantic; Shrimp Fishery of the Gulf of Mexico and South Atlantic; Revisions...Plan for the Shrimp Fishery of the Gulf of Mexico (Gulf FMP) and the Fishery...

  2. 75 FR 20548 - Fisheries of the Caribbean, Gulf of Mexico, and South Atlantic; Shrimp Fishery of the Gulf of...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-04-20

    ...0648-AY58 Fisheries of the Caribbean, Gulf of Mexico, and South Atlantic; Shrimp Fishery of the Gulf of Mexico and South Atlantic; Revisions...Plan for the Shrimp Fishery of the Gulf of Mexico (Gulf FMP) and the Fishery...

  3. 77 FR 21679 - Shrimp Fisheries of the Gulf of Mexico and South Atlantic; Revisions of Bycatch Reduction Device...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-04-11

    ...Shrimp Fisheries of the Gulf of Mexico and South Atlantic; Revisions of Bycatch Reduction Device Testing...Management Plan for the Shrimp Fishery of the South Atlantic Region (South Atlantic FMP), this rule certifies two new bycatch...

  4. Tidal and seasonal effects on transport of pink shrimp postlarvae

    USGS Publications Warehouse

    Criales, M.M.; Wang, Jingyuan; Browder, J.A.; Robblee, M.B.

    2005-01-01

    Transport simulations were conducted to investigate a large seasonal peak in postlarvae of the pink shrimp Farfantepenaeus duorarum that occurs every summer on the northwestern border of Florida Bay. Daily vertical migration, a known behavior in pink shrimp postlarvae, was assumed in all scenarios investigated. A Lagrangian trajectory model was developed using a current field derived from a 3 yr ADCP (Acoustic Doppler Current Profiler) time series. To fit the estimated planktonic development time of pink shrimp, the model simulated larvae traveling at night over a 30 d period. We investigated 2 types of effects: (1) the effect of mismatch periodicity between tidal constituents and daily migration, and (2) the effect of seasonal changes in night length. The maximum eastward displacement with the semidiurnal lunar tidal constituent (M2) was 4 km, with periods of enhanced transport in both summer and winter. In contrast, eastward displacement with the semidiurnal solar tidal constituent (S2) and the lunisolar diurnal K1 was 65 km and the period of maximum distance occurred in summer every year. Because the periods of S2 and K1 are so close to the 24 h vertical migration period, and the eastward current (flood) of these constituents matches the diel cycle over extended intervals, they can induce strong horizontal transport during summer. Thus, diel vertical migration can interact with the S2 and the K1 tidal constituents and with the annual cycle of night length to produce a distinct annual cycle that may enhance transport of pink shrimp and other coastal species during summer in shallow areas of the Gulf of Mexico. ?? Inter-Research 2005.

  5. A Circo-Like Virus Isolated from Penaeus monodon Shrimps

    PubMed Central

    Pham, Hanh T.; Yu, Qian; Boisvert, Maude; Van, Hanh T.; Bergoin, Max

    2014-01-01

    A virus with a circular Rep-encoding single-stranded DNA (ssDNA) (CRESS-DNA) genome (PmCV-1) was isolated from Penaeus monodon shrimps in Vietnam. The gene structure of the 1,777-nucleotide (nt) genome was similar to that of circoviruses and cycloviruses, but the nucleic acid and protein sequence identities to these viruses were very low. PMID:24435870

  6. 77 FR 27411 - Sea Turtle Conservation; Shrimp Trawling Requirements

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-05-10

    ...We are proposing to withdraw the alternative tow time restriction and require all skimmer trawls, pusher-head trawls, and wing nets (butterfly trawls) rigged for fishing to use turtle excluder devices (TEDs) in their nets. The intent of this proposed rule is to reduce incidental bycatch and mortality of sea turtles in the southeastern U.S. shrimp fisheries, and to aid in the protection and......

  7. U-Pb SHRIMP dating of uraniferous opals

    USGS Publications Warehouse

    Nemchin, A.A.; Neymark, L.A.; Simons, S.L.

    2006-01-01

    U-Pb and U-series analyses of four U-rich opal samples using sensitive high-resolution ion microprobe (SHRIMP) demonstrate the potential of this technique for the dating of opals with ages ranging from several tens of thousand years to millions of years. The major advantages of the technique, compared to the conventional thermal ionisation mass spectrometry (TIMS), are the high spatial resolution (???20 ??m), the ability to analyse in situ all isotopes required to determine both U-Pb and U-series ages, and a relatively short analysis time which allows obtaining a growth rate of opal as a result of a single SHRIMP session. There are two major limitations to this method, determined by both current level of development of ion probes and understanding of ion sputtering processes. First, sufficient secondary ion beam intensities can only be obtained for opal samples with U concentrations in excess of ???20 ??g/g. However, this restriction still permits dating of a large variety of opals. Second, U-Pb ratios in all analyses drifted with time and were only weakly correlated with changes in other ratios (such as U/UO). This drift, which is difficult to correct for, remains the main factor currently limiting the precision and accuracy of the U-Pb SHRIMP opal ages. Nevertheless, an assumption of similar behaviour of standard and unknown opals under similar analytical conditions allowed successful determination of ages with precisions of ???10% for the samples investigated in this study. SHRIMP-based U-series and U-Pb ages are consistent with TIMS dating results of the same materials and known geological timeframes. ?? 2005 Elsevier B.V. All rights reserved.

  8. Shrimps that pay attention: saccadic eye movements in stomatopod crustaceans

    PubMed Central

    Marshall, N. J.; Land, M. F.; Cronin, T. W.

    2014-01-01

    Discovering that a shrimp can flick its eyes over to a fish and follow up by tracking it or flicking back to observe something else implies a ‘primate-like’ awareness of the immediate environment that we do not normally associate with crustaceans. For several reasons, stomatopods (mantis shrimp) do not fit the general mould of their subphylum, and here we add saccadic, acquisitional eye movements to their repertoire of unusual visual capabilities. Optically, their apposition compound eyes contain an area of heightened acuity, in some ways similar to the fovea of vertebrate eyes. Using rapid eye movements of up to several hundred degrees per second, objects of interest are placed under the scrutiny of this area. While other arthropod species, including insects and spiders, are known to possess and use acute zones in similar saccadic gaze relocations, stomatopods are the only crustacean known with such abilities. Differences among species exist, generally reflecting both the eye size and lifestyle of the animal, with the larger-eyed more sedentary species producing slower saccades than the smaller-eyed, more active species. Possessing the ability to rapidly look at and assess objects is ecologically important for mantis shrimps, as their lifestyle is, by any standards, fast, furious and deadly. PMID:24395969

  9. Enhancing Ecoefficiency in Shrimp Farming through Interconnected Ponds.

    PubMed

    Barraza-Guardado, Ramón Héctor; Arreola-Lizárraga, José Alfredo; Miranda-Baeza, Anselmo; Juárez-García, Manuel; Juvera-Hoyos, Antonio; Casillas-Hernández, Ramón

    2015-01-01

    The future development of shrimp farming needs to improve its ecoefficiency. The purpose of this study was to evaluate water quality, flows, and nitrogen balance and production parameters on a farm with interconnected pond design to improve the efficiency of the semi-intensive culture of Litopenaeus vannamei ponds. The study was conducted in 21 commercial culture ponds during 180 days at densities of 30-35?ind?m(-2) and daily water exchange <2%. Our study provides evidence that by interconnecting ponds nutrient recycling is favored by promoting the growth of primary producers of the pond as chlorophyll a. Based on the mass balance and flow of nutrients this culture system reduces the flow of solid, particulate organic matter, and nitrogen compounds to the environment and significantly increases the efficiency of water (5 to 6.5?m(3)?kg(-1) cycle(-1)), when compared with traditional culture systems. With this culture system it is possible to recover up to 34% of the total nitrogen entering the system, with production in excess of 4,000?kg?ha(-1) shrimp. We believe that the production system with interconnected ponds is a technically feasible model to improve ecoefficiency production of shrimp farming. PMID:26525070

  10. Enhancing Ecoefficiency in Shrimp Farming through Interconnected Ponds

    PubMed Central

    Barraza-Guardado, Ramón Héctor; Arreola-Lizárraga, José Alfredo; Miranda-Baeza, Anselmo; Juárez-García, Manuel; Juvera-Hoyos, Antonio; Casillas-Hernández, Ramón

    2015-01-01

    The future development of shrimp farming needs to improve its ecoefficiency. The purpose of this study was to evaluate water quality, flows, and nitrogen balance and production parameters on a farm with interconnected pond design to improve the efficiency of the semi-intensive culture of Litopenaeus vannamei ponds. The study was conducted in 21 commercial culture ponds during 180 days at densities of 30–35?ind?m?2 and daily water exchange <2%. Our study provides evidence that by interconnecting ponds nutrient recycling is favored by promoting the growth of primary producers of the pond as chlorophyll a. Based on the mass balance and flow of nutrients this culture system reduces the flow of solid, particulate organic matter, and nitrogen compounds to the environment and significantly increases the efficiency of water (5 to 6.5?m3?kg?1 cycle?1), when compared with traditional culture systems. With this culture system it is possible to recover up to 34% of the total nitrogen entering the system, with production in excess of 4,000?kg?ha?1 shrimp. We believe that the production system with interconnected ponds is a technically feasible model to improve ecoefficiency production of shrimp farming. PMID:26525070

  11. Predation by native brown shrimp on invasive Pacific oyster spat

    NASA Astrophysics Data System (ADS)

    Weerman, E. J.; Eriksson, B. K.; Olff, H.; van der Heide, T.

    2014-01-01

    In the last decades, the invasive Pacific oyster (Crassostrea gigas) increased dramatically in the Wadden Sea. One of the driving mechanisms for the success of the Pacific oyster could be a relatively low predation pressure by epibenthic predators and shore birds on oyster spat. Nevertheless, observations and experiments on predation rates on early life-stages of the Pacific oyster are rare. Therefore, we examined predation rates of brown shrimps on Pacific oyster spat in a number of laboratory experiments. Our results demonstrate that spat of Pacific oysters are most susceptible to predation by brown shrimps (Crangon crangon) in the first days after settlement, when attachment to the substrate (unglazed tiles in our study) is still absent or weak. At this stage the shell length of oyster spat is around ~ 300 ?m, and around 50% of the individuals in the experiment were consumed in the two hour trials. Predation rates decreased rapidly as the spat grew larger and reached zero within 10 days after settlement of the spat (shell length > 700 ?m). Additional experiments revealed that the attachment of oysters is probably limiting predation by brown shrimps rather than the size of the spat. This indicates that Pacific oyster spat may limit predation loss faster compared to native bivalves, which commonly depend on size to reduce predation rates. Overall, our results suggest that the invasive success of Pacific oysters may in part be explained by relatively low predation rates throughout their life stages.

  12. Abundance and size of Gulf shrimp in Louisiana's coastal estuaries following the Deepwater Horizon oil spill.

    PubMed

    van der Ham, Joris L; de Mutsert, Kim

    2014-01-01

    The Deepwater Horizon oil spill impacted Louisiana's coastal estuaries physically, chemically, and biologically. To better understand the ecological consequences of this oil spill on Louisiana estuaries, we compared the abundance and size of two Gulf shrimp species (Farfantepeneus aztecus and Litopeneus setiferus) in heavily affected and relatively unaffected estuaries, before and after the oil spill. Two datasets were used to conduct this study: data on shrimp abundance and size before the spill were available from Louisiana Department of Wildlife and Fisheries (LDWF). Data on shrimp abundance and size from after the spill were independently collected by the authors and by LDWF. Using a Before-After-Control-Impact with Paired sampling (BACIP) design with monthly samples of two selected basins, we found brown shrimp to become more abundant and the mean size of white shrimp to become smaller. Using a BACIP with data on successive shrimp year-classes of multiple basins, we found both species to become more abundant in basins that were affected by the spill, while mean shrimp size either not change after the spill, or increased in both affected and unaffected basins. We conclude that following the oil spill abundances of both species increased within affected estuaries, whereas mean size may have been unaffected. We propose two factors that may have caused these results: 1) exposure to polycyclic aromatic hydrocarbons (PAHs) may have reduced the growth rate of shrimp, resulting in a delayed movement of shrimp to offshore habitats, and an increase of within-estuary shrimp abundance, and 2) fishing closures established immediately after the spill, may have resulted in decreased fishing effort and an increase in shrimp abundance. This study accentuates the complexities in determining ecological effects of oil spills, and the need of studies on the organismal level to reveal cause-and-effect relationships of such events. PMID:25272142

  13. 40 CFR 408.120 - Applicability; description of the Southern non-breaded shrimp processing in the contiguous States...

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ...description of the Southern non-breaded shrimp processing in the contiguous States subcategory...SOURCE CATEGORY Southern Non-Breaded Shrimp Processing in the Contiguous States Subcategory...description of the Southern non-breaded shrimp processing in the contiguous States...

  14. SHRiMP: Accurate Mapping of Short Color-space Reads Stephen M. Rumble1,2

    E-print Network

    Sidow, Arend

    SHRiMP: Accurate Mapping of Short Color-space Reads Stephen M. Rumble1,2 , Phil Lacroute3 genomic studies of non-model species. In this paper we present SHRiMP - the SHort Read Mapping Package hits. We use SHRiMP to map reads from a newly sequenced Ciona savignyi individual to the reference

  15. 40 CFR 408.120 - Applicability; description of the Southern non-breaded shrimp processing in the contiguous States...

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ...description of the Southern non-breaded shrimp processing in the contiguous States subcategory...SOURCE CATEGORY Southern Non-Breaded Shrimp Processing in the Contiguous States Subcategory...description of the Southern non-breaded shrimp processing in the contiguous States...

  16. Effects of the 1981 Closure on the Texas Shrimp Fishery ALBERT C. JONES, EDWARD F. KLIMA, and JOHN R. POFFENBERGER

    E-print Network

    Effects of the 1981 Closure on the Texas Shrimp Fishery ALBERT C. JONES, EDWARD F. KLIMA, and JOHN R. POFFENBERGER Introduction Shrimp fisheries in the Fishery Con- servation Zone (FCZ) in the Gulf of Mexico are federally managed by the Shrimp Fishery Management Plan, which was implemented by the Secre

  17. A Synopsis of the Tortugas Pink Shrimp, Penaeus duorarum, Fishery, 1981-84, and the Impact of the Tortugas Sanctuary

    E-print Network

    A Synopsis of the Tortugas Pink Shrimp, Penaeus duorarum, Fishery, 1981-84, and the Impact of the Tortugas Sanctuary EDWARD F. KLIMA and FRANK J. PATELLA Introduction The Gulf of Mexico Shrimp Fishery Management Plan established an area commonly known as the Tortugas Shrimp Sanctuary off south Florida (Fig. 1

  18. IL NUOVO CIMENTO VOL. 109 B, N. 4 Aprile 1994 The Shrimp Strategy in the Treatment of Cosmological Equations

    E-print Network

    Scudellaro, Paolo

    IL NUOVO CIMENTO VOL. 109 B, N. 4 Aprile 1994 The Shrimp Strategy in the Treatment of Cosmological which exhibit the required features and then going back like a shrimp to reconstruct the potential The Klein-Gordon equation is (2.3) ~ + 3H~ + V'(~) = 0, #12;THE SHRIMP STRATEGY IN THE TREATMENT ETC. 405

  19. 40 CFR 408.120 - Applicability; description of the Southern non-breaded shrimp processing in the contiguous States...

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ...description of the Southern non-breaded shrimp processing in the contiguous States subcategory...SOURCE CATEGORY Southern Non-Breaded Shrimp Processing in the Contiguous States Subcategory...description of the Southern non-breaded shrimp processing in the contiguous States...

  20. Are the Hawaiian Opae-ula Shrimps Halocaridina rubra and H. palahemo Simply Different Morphotypes of the Same Species?

    E-print Network

    Cowles, David L.

    Are the Hawaiian Opae-ula Shrimps Halocaridina rubra and H. palahemo Simply Different Morphotypes of the Atyid shrimp genus Halocaridina are endemic to the Hawaiian Islands. Halocaridina rubra is found pereiopods were tracked. The hypothesis was that the shrimp which consistently fed on pelagic algae would

  1. 40 CFR 408.120 - Applicability; description of the Southern non-breaded shrimp processing in the contiguous States...

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ...description of the Southern non-breaded shrimp processing in the contiguous States subcategory...SOURCE CATEGORY Southern Non-Breaded Shrimp Processing in the Contiguous States Subcategory...description of the Southern non-breaded shrimp processing in the contiguous States...

  2. 40 CFR 408.120 - Applicability; description of the Southern non-breaded shrimp processing in the contiguous States...

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ...description of the Southern non-breaded shrimp processing in the contiguous States subcategory...SOURCE CATEGORY Southern Non-Breaded Shrimp Processing in the Contiguous States Subcategory...description of the Southern non-breaded shrimp processing in the contiguous States...

  3. MEXUS-Gulf Shrimp Research, 1978-84 EDWARD F. KLIMA, REFUGIO GMO. CASTRO MELENDEZ, NEAL BAXTER,

    E-print Network

    shrimp and other marine resources in the Gulf of Mexico. As a result, in 1fJ77 a cooperative research shrimp production in the Gulf of Mexico in 1fJ77 was about 148,000 metric tons (t), heads on, whereas, respectively. The brown shrimp popula tion is distributed throughout the north ern and western Gulf of Mexico

  4. Inactivation of natural microflora and Listeria innocua on raw whole shrimp by ozonated water, antimicrobial coatings, and cryogenic freezing

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Shrimp have been associated with foodborne illness outbreaks. A survey was conducted to investigate the microbiological safety and quality of frozen raw whole shrimp in local US markets. Results from 32 brands of raw whole shrimp samples available in local retail markets representing 9 countries of ...

  5. 75 FR 49889 - Notice of Final Results of Antidumping Duty Changed-Circumstances Review: Frozen Warmwater Shrimp...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-08-16

    ... Warmwater Shrimp From the Socialist Republic of Vietnam, 70 FR 5152 (February 1, 2005) (``VN Shrimp Order... Warmwater Shrimp From Vietnam: Initiation and Preliminary Results of Changed-Circumstances Review, 75 FR... Changed Circumstances Review, 68 FR 25327 (May 12, 2003). This determination and this notice are...

  6. 76 FR 23277 - Certain Frozen Warmwater Shrimp From Brazil, India, the People's Republic of China, Thailand, and...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-04-26

    ... Warmwater Shrimp From Brazil, 69 FR 76910 (December 23, 2004); Notice of Final Determination of Sales at Less Than Fair Value: Certain Frozen and Canned Warmwater Shrimp From Ecuador, 69 FR 76913 (December 23... of Critical Circumstances: Certain Frozen and Canned Warmwater Shrimp From India, 69 FR...

  7. 78 FR 18958 - Certain Frozen Warmwater Shrimp From the People's Republic of China and Diamond Sawblades and...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-03-28

    ... Republic of China, 69 FR 70997 (December 8, 2004) (``PRC Shrimp Final Determination''). See also Notice of... Warmwater Shrimp From the People's Republic of China, 70 FR 5149 (February 1, 2005) (``PRC Shrimp Amended... Republic of China, 71 FR 29303 (May 22, 2006). See also Notice of Amended Final Determination of Sales...

  8. Clues to the Evolution of the R Coronae Borealis Stars from their Unique 16O/18O ratios

    NASA Astrophysics Data System (ADS)

    Clayton, Geoffrey C.; Montiel, Edward J.; Geballe, Thomas R.; Welch, Douglas L.; Tisserand, Patrick

    2014-06-01

    We report new spectroscopic observations of the CO bands near 2.3 micron in order to measure the 16O/18O isotopic ratio in the R Coronae Borealis (RCB) stars using IRTF/SpeX. These observations of ten additional stars confirm the remarkable discovery made a few years ago that the hydrogen-deficient carbon (HdC) and RCB stars have 16O/18O ratios that are close to and in some cases less than unity, values that are orders of magnitude smaller than measured in other stars (the Solar value is 500). The RCB stars are a small group of carbon-rich supergiants. Only about 100 RCB stars are known in the Galaxy. Their defining characteristics are hydrogen deficiency and unusual variability - RCB stars undergo massive declines of up to 8 mag due to the formation of carbon dust at irregular intervals. The six known HdC stars are very similar to the RCB stars spectroscopically, but do not show declines or IR excesses. Two scenarios have been proposed for the origin of an RCB star: the double degenerate and the final helium-shell flash models. The former involves the merger of a CO- and a He-white dwarf. In the latter, a star evolving into a planetary nebula central star expands to supergiant size by a final, helium-shell flash. Greatly enhanced 18O is evident in every HdC and RCB we have measured that is cool enough to have detectable CO bands. This discovery is important evidence to help distinguish between the proposed evolutionary pathways of HdC and RCB stars. No overproduction of 18O is expected in a final flash, so we are investigating the merger scenario. We are working to reproduce the observed 16O/18O ratios by performing hydrodynamical simulations of the merger of CO- and He-WDs to investigate the formation of RCB stars. We are also using the MESA stellar evolution and NuGrid nucleosynthesis codes to construct post-merger 1D spherical models and follow their evolution into the region of the HR diagram where RCB stars are located.

  9. Species profiles: Life histories and environmental requirements of coastal fishes and invertebrates (South Atlantic): Brown shrimp

    SciTech Connect

    Larson, S.C.; Van Den Avyle, M.J.; Bozeman, E.L. Jr.

    1989-01-01

    Species profiles are literature summaries of the life history, distribution, and environmental requirements of coastal fishes and invertebrates. Profiles are prepared to assist with environmental impact assessment. Brown shrimp (Penaeus aztecus) account for about one-third of the commercial shrimp harvest in the South Atlantic Region; the landing were worth $20 million in 1982. In the South Atlantic Region, commercially importance brown shrimp fishing grounds extend from Fort Pierce, Florida, to Pamlico Sound and Ocracoke Inlet, North Carolina. Most of the commercial harvest is taken inside the 10-fathom contour. Brown shrimp are omnivorous and eat food items ranging from detritus to small invertebrates and fishes. Many predators, including fishes and crustaceans, feed on brown shrimp. Brown shrimp survival is reduced by adverse temperature or salinities. Intertidal vegetation is an important characteristic of brown shrimp nursery areas. The suitability of some estuaries as nursery areas may be reduced by bulkheading, ditching, disposal of dredged materials, and drainage from agricultural and silvicultural areas. Existing estuarine areas must be preserved to ensure the continued production of brown shrimp. 57 refs., 2 figs., 2 tabs.

  10. 75 FR 1078 - Frozen Warmwater Shrimp From Brazil, China, India, Thailand, and Vietnam

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-01-08

    ... warmwater shrimp from Brazil, China, India, Thailand, and Vietnam (70 FR 5143-5156).\\2\\ The Commission is... part 207), as most recently amended at 74 FR 2847 (January 16, 2009). \\1\\ No response to this request... shrimp from Thailand with respect to certain manufacturer/exporters. 74 FR 5638 (January 30, 2009)....

  11. 75 FR 22424 - Frozen Warmwater Shrimp From Brazil, China, India, Thailand, and Vietnam

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-04-28

    ... responses to its notice of institution (75 FR 1078, January 8, 2010) were adequate for each order under... Frozen Warmwater Shrimp From Brazil, China, India, Thailand, and Vietnam AGENCY: United States... concerning the antidumping duty orders on frozen warmwater shrimp from Brazil, China, India, Thailand,...

  12. 75 FR 12175 - Certain Frozen Warmwater Shrimp from India: Preliminary Results of Antidumping Duty...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-03-15

    ... Antidumping Duty Order: Certain Frozen Warmwater Shrimp from India, 70 FR 5147 (Feb. 1, 2005) (Shrimp Order... Order, Finding, or Suspended Investigation; Opportunity to Request Administrative Review, 74 FR 6013... Reviews, 74 FR 15699 (Apr. 7, 2009) (Initiation Notice). In the Initiation Notice, we indicated that...

  13. 76 FR 12025 - Certain Frozen Warmwater Shrimp From India: Preliminary Results of Antidumping Duty...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-03-04

    ...: Certain Frozen Warmwater Shrimp from India, 70 FR 5147 (Feb. 1, 2005) (Shrimp Order). On February 1, 2010... Suspended Investigation; Opportunity to Request Administrative Review, 75 FR 5037 (Feb. 1, 2010). In..., 75 FR 17693 (Apr. 7, 2010) (Initiation Notice). In the Initiation Notice, the Department...

  14. 77 FR 13275 - Certain Frozen Warmwater Shrimp From India: Preliminary Results of Antidumping Duty...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-03-06

    ... Warmwater Shrimp from India, 70 FR 5147 (Feb. 1, 2005) (Shrimp Order). \\2\\ See Antidumping or Countervailing Duty Order, Finding, or Suspended Investigation; Opportunity to Request Administrative Review, 76 FR... of Initiation of Antidumping Duty Administrative Reviews, 76 FR 18157 (Apr. 1, 2011)...

  15. 77 FR 13082 - Certain Frozen Warmwater Shrimp From Thailand: Preliminary Results of Antidumping Duty...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-03-05

    ...Ltd., Okeanos Food Co., Ltd...Thailand) Company Ltd...petitioner,\\5\\ the American Shrimp Processors...statements from 14 companies that indicated...the ASPA filed company-specific sales-below-cost...Committee's and the American Shrimp Processors...Royal Frozen Food Co.,...

  16. Characterization of lipids and their oxidation products in baked or fried breaded shrimp products

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Two breaded shrimp products were examined for the changes in cholesterol, phytosterols, and fatty acids that occurred during cooking. The products were analyzed by gas chromatography (GC) in the raw, baked, and fried states after separation into breading and shrimp components. Cholesterol, campest...

  17. Little Shrimp, Big Results: A Model of an Integrative, Cross-Curricular Activity

    ERIC Educational Resources Information Center

    Ackerson, Nicole; Piser, Carol; Walka, Keith

    2010-01-01

    This integrative, cross-curricular lab engages middle school biology students in an exercise involving ecology, arthropod biology, and mathematics. Students research the anatomy and behavioral patterns of a species of brine shrimp, compare the anatomy of adult and juvenile brine shrimp, and graph and interpret results. In this article, the authors…

  18. 75 FR 12188 - Certain Frozen Warmwater Shrimp from Thailand: Preliminary Results of Antidumping Duty...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-03-15

    ..., 74 FR 5638, 5639 (January 30, 2009) (Section 129 Determination); Certain Frozen Warmwater Shrimp from..., 74 FR 52452 (October 13, 2009). We preliminarily determine that sales were made by MRG, Pakfood and... Warmwater Shrimp from Thailand, 70 FR 5145 (February 1, 2005). On February 4, 2009, the Department...

  19. 50 CFR 622.208 - Minimum mesh size applicable to rock shrimp off Georgia and Florida.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 50 Wildlife and Fisheries 12 2014-10-01 2014-10-01 false Minimum mesh size applicable to rock... mesh size applicable to rock shrimp off Georgia and Florida. (a) The minimum mesh size for the cod end of a rock shrimp trawl net in the South Atlantic EEZ off Georgia and Florida is 17/8 inches (4.8...

  20. 50 CFR 622.208 - Minimum mesh size applicable to rock shrimp off Georgia and Florida.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 50 Wildlife and Fisheries 12 2013-10-01 2013-10-01 false Minimum mesh size applicable to rock... mesh size applicable to rock shrimp off Georgia and Florida. (a) The minimum mesh size for the cod end of a rock shrimp trawl net in the South Atlantic EEZ off Georgia and Florida is 17/8 inches (4.8...

  1. Prediction of spoilage of tropical shrimp (Penaeus notialis) under dynamic temperature regimes.

    PubMed

    Dabadé, D Sylvain; Azokpota, Paulin; Nout, M J Robert; Hounhouigan, D Joseph; Zwietering, Marcel H; den Besten, Heidy M W

    2015-10-01

    The spoilage activity of Pseudomonas psychrophila and Carnobacterium maltaromaticum, two tropical shrimp (Penaeus notialis) spoilage organisms, was assessed in cooked shrimps stored at 0 to 28 °C. Microbiological, chemical and sensory analyses were performed during storage. P. psychrophila had a higher growth rate and showed a higher spoilage activity at temperatures from 0 to 15 °C, while at 28 °C, C. maltaromaticum had a higher growth rate. The spoilage activity of P. psychrophila was found to be higher in cooked shrimp than in fresh shrimp. Observed shelf-life data of shrimps stored at constant temperatures were used to validate a previously developed model that predicts tropical shrimp shelf-life at constant storage temperatures. Models predicting the growth of the spoilage organisms as a function of temperature were constructed. The validation of these models under dynamic storage temperatures simulating temperature fluctuation in the shrimp supply chain showed that they can be used to predict the shelf-life of cooked and fresh tropical shrimps. PMID:26119189

  2. Draft Genome Sequence of Vibrio owensii Strain SH-14, Which Causes Shrimp Acute Hepatopancreatic Necrosis Disease

    PubMed Central

    Liu, Liyuan; Xiao, Jinzhou; Xia, Xiaoming; Pan, Yingjie; Yan, Shuling

    2015-01-01

    We sequenced Vibrio owensii strain SH-14, which causes serious acute hepatopancreatic necrosis disease (AHPND) in shrimp. Sequence analysis showed a large extrachromosomal plasmid, which encoded pir toxin genes and shared highly sequence similarity with the one observed in AHPND-causing Vibrio parahaemolyticus strains. The results suggest that this plasmid appears to play an important role in shrimp AHPND. PMID:26634753

  3. Effect of cryogenic freezing on salmonella and listeria recovery from inoculated shrimp

    Technology Transfer Automated Retrieval System (TEKTRAN)

    In the United States, shrimp is number one in seafood consumption. Shrimp is usually imported frozen, and the Food and Drug Administration has isolated Salmonella spp. from this frozen product. This research was conducted to determine the effect of two cryogenic freezing protocols (time and tempe...

  4. Effect of gamma-irradiation on frozen shrimps for decontamination of pathogenic bacteria

    NASA Astrophysics Data System (ADS)

    Ito, Hitoshi; Rashid, Harun Or; Sangthong, Naruemon; Adulyatham, Pitaya; Rattagool, Pongpen; Ishigaki, Isao

    1993-07-01

    Twelve samples of imported frozen shrimps were used in this study. The total aerobic bacteria were at 2 × 10 4 to 6 × 10 6 per gram. A few of Vibrio parahaemolyticus, V. mimicus, V. alginolyticus, V. vulnificus, V. fluvialis and Listeria monocytogenes were isolated from many samples. However, Salmonella was not detected in any of the samples. After exposure to 4-5 kGy of gamma-rays, the total aerobic bacteria in frozen shrimps were reduced by approximately 2-3 log cycles. The dose necessary to reduce the vibrio isolates and Aeromonas hydrophila at a level of below 10 -4 per gram was about 3 kGy in frozen shrimps, whereas about 3.5 kGy was required for L. monocytogenes and Salmonella typhimurium. In this study, unpleasant off-odor was clearly detected in the non-frozen shrimps irradiated at 2.5 kGy. On the other hand, off-odor was negligible in the frozen product below 5 kGy irradiation. No remarkable changes of peroxide values were also obtained up to 9 kGy of irradiation in the frozen shrimps. However peroxide values of non-frozen shrimps were clearly increased even irradiated at 4 kGy. Trimethylamine content was not changed at doses below 10 kGy in both of frozen and non-frozen shrimps. Shelf-life of defrosted shrimps were extended ca. 2 times under non-frozen market conditions.

  5. MODELING THE RELATIONSHIP BETWEEN SHRIMP MARICULTURE AND WATER QUALITY IN THE RIO CHONE ESTUARY, ECUADOR

    EPA Science Inventory

    The Rio Chone estuary in Ecuador has been heavily altered by the conversion of over 90% of the original mangrove forest to shrimp ponds. We carried out computational experiments using both hydrodynamic and shrimp pond models to investigate factors leading to declines in estuarine...

  6. MFR REPR INT 976 M etric tons of Penaeus lapon/cus Fresh shrimp for tempura

    E-print Network

    that the Japanese people demand live shrimp for the prep- aration of a delicacy known as tempura.1 Over the years size. Even though the Japanese have succes fully reared shrimp through several generations fo r th e batte r vary and are oft e n a c lose ly- guarded profess io nal sec ret Usually. food

  7. 76 FR 12033 - Certain Frozen Warmwater Shrimp From Thailand: Preliminary Results of Antidumping Duty...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-03-04

    ...: Certain Frozen Warmwater Shrimp from Thailand, 70 FR 5145 (Feb. 1, 2005) (Shrimp Order). On February 1..., or Suspended Investigation; Opportunity to Request Administrative Review, 75 FR 5037 (Feb. 1, 2010... Reviews, 75 FR 17693 (Apr. 7, 2010) (Initiation Notice).\\2\\ \\2\\ In the Initiation Notice, the...

  8. Impacts on Shrimp Yields of the 1981 Fishery Conservation Zone Closure off Texas

    E-print Network

    Impacts on Shrimp Yields of the 1981 Fishery Conservation Zone Closure off Texas scan NICHOLS aztecus (Ives) to grow larger before harvesting. Since 1959, Texas state waters (the Territorial Sea, 0 closure on yields of brown shrimp from the Texas FCZ area and on yields in offshore waters from

  9. 77 FR 31062 - Programs To Reduce Incidental Capture of Sea Turtles in Shrimp Fisheries; Certifications Pursuant...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-05-24

    ...Programs To Reduce Incidental Capture of Sea Turtles in Shrimp Fisheries; Certifications Pursuant...to reduce the incidental capture of sea turtles in their shrimp fisheries comparable to...threat of the incidental taking of sea turtles protected under Section 609....

  10. Probabilities of low nighttime temperatures during stocking and harvest seasons for inland shrimp culture

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Technical Abstract: The pacific white shrimp (Litopenaeus vannamei) is cultured in earthen ponds at inland sites across the southern US. The growing season in ponds is limited to periods when water temperatures permit shrimp survival and growth. Low nighttime air temperatures associated with cold f...

  11. USE OF THE GRASS SHRIMP 'PALAEMONETES PUGIO' IN A LIFE-CYCLE TOXICITY TEST

    EPA Science Inventory

    A methodology for using the estuarine grass shrimp (Palaemonetes pugio) in life-cycle toxicity tests was successfully developed. Life-cycle exposures of juvenile shrimp (12 to 19 mm in rostrum-telson length) to the chlorinated hydrocarbon pesticide endrin were begun in November 1...

  12. 75 FR 13492 - Certain Frozen Warmwater Shrimp From India: Initiation of Antidumping Duty Changed-Circumstances...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-03-22

    ...of processing; (3) fresh shrimp and prawns whether...That is produced from fresh (or thawed-from-frozen...layer of rice or wheat flour of at least 95 percent...evenly coated with the flour; (4) with the non-shrimp...predecessor. See, e.g., Fresh and Chilled Atlantic...

  13. 75 FR 16436 - Certain Frozen Warmwater Shrimp From India: Initiation of Antidumping Duty Changed Circumstances...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-04-01

    ...of processing; (3) fresh shrimp and prawns whether...That is produced from fresh (or thawed-from-frozen...layer of rice or wheat flour of at least 95 percent...evenly coated with the flour; (4) with the non-shrimp...predecessor. See, e.g., Fresh and Chilled Atlantic...

  14. 75 FR 54847 - Certain Frozen Warmwater Shrimp from Thailand: Final Results and Partial Rescission of...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-09-09

    ...of processing; (3) fresh shrimp and prawns whether...That is produced from fresh (or thawed-from-frozen...layer of rice or wheat flour of at least 95 percent...evenly coated with the flour; (4) with the non-shrimp...Co., Ltd. (13) Sky Fresh Co., Ltd. (14)...

  15. Decapsulating Brine Shrimp Eggs 1 Craig Watson and Roy P. E. Yanong2

    E-print Network

    Hill, Jeffrey E.

    FA18 Decapsulating Brine Shrimp Eggs 1 Craig Watson and Roy P. E. Yanong2 1. This document is FA18/IFAS Extension. Introduction Brine shrimp eggs are used throughout the world as a food for small fish in hatcheries. These eggs are really cysts which, if they are kept dry, can remain dormant for years before

  16. Untrawlable Bottom in Shrimp Statistical Zones of the Northwest Gulf of Mexico

    E-print Network

    Untrawlable Bottom in Shrimp Statistical Zones of the Northwest Gulf of Mexico Introduction The shrimping industry in the Gulf of Mexico has criticized the bycatch reduc tion plans of the Gulf of Mexico.edu. ABSTRACT-The Gulf of Mexico Fish eries Management Council tasked the Na tional Marine Fisheries Service

  17. 78 FR 56209 - Certain Frozen Warmwater Shrimp From the People's Republic of China: Final Results of...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-09-12

    ...On March 12, 2013, the Department of Commerce (``Department'') published the Preliminary Results of the administrative review of the antidumping duty order on certain frozen warmwater shrimp (``shrimp'') from the People's Republic of China (``PRC''), covering the period of review (``POR'') from February 1, 2011, through January 31, 2012.\\1\\ On May 20, 2013, the Department issued a......

  18. Characterization of the Taura syndrome virus isolate originating from the 2004 Texas Epizootic in cultured shrimp

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Taura syndrome virus (TSV) is a major viral pathogen of penaeid shrimp worldwide. A comprehensive investigation of the Texas isolate of TSV that caused epizootics in shrimp farms in Texas in 2004 (Us04Pv1) revealed that the virus was highly virulent in laboratory bioassays causing severe symptom dev...

  19. Predictive Modeling of Selenium Accumulation in Brine Shrimp in Saline Environments

    E-print Network

    Grosell, Martin

    Predictive Modeling of Selenium Accumulation in Brine Shrimp in Saline Environments Earl R. Byron, as well as resident waterfowl, shorebirds, and gulls. Selenium and other trace elements, metals;7:478­482. ß 2011 SETAC Keywords: Selenium Brine shrimp Bioaccumulation Great Salt Lake INTRODUCTION Great Salt

  20. Hydraulic activities by ghost shrimp Neotrypaea californiensis induce oxic-anoxic oscillations in sediments

    EPA Science Inventory

    We applied porewater pressure sensing, time-lapse photography and planar optode imaging of oxygen to investigate hydraulic behaviors of the Thalassinidean ghost shrimp Neotrypaea californiensis and the associated dynamics of oxygen in and around their burrows. Ghost shrimp were h...

  1. Estimated Impacts on Ex-Vessel Brown Shrimp Prices and Value as a Result of the

    E-print Network

    of several alternative sta- tistical models. Finally, the estimated changes in brown shrimp prices and John REstimated Impacts on Ex-Vessel Brown Shrimp Prices and Value as a Result of the Texas Closure Regulation JOHN R. POFFENBERGER Introduction Changes in commodity prices may result from any regulatory

  2. 77 FR 23222 - Certain Frozen Warmwater Shrimp From the Socialist Republic of Vietnam: Final Results of...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-04-18

    ... Republic of Vietnam, 70 FR 5152 (February 1, 2005) (``VN Shrimp Order''). \\2\\ See VN Shrimp Order; see also... Rescission of Antidumping Administrative Review, 73 FR 52273 (September 9, 2008). \\3\\ See Certain Frozen... Duty Administrative Review, 75 FR 47771 (August 9, 2010). On December 13, 2011, C. P....

  3. 75 FR 16436 - Certain Frozen Warmwater Shrimp From India: Initiation of Antidumping Duty Changed Circumstances...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-04-01

    ...: Certain Frozen Warmwater Shrimp from India, 70 FR 5147 (Feb. 1, 2005) (Shrimp Order). On February 3, 2010... of China: Final Results of Changed Circumstances Antidumping Duty Administrative Review, 70 FR 69941... Review: Polychloroprene Rubber from Japan, 67 FR 58 (Jan. 2, 2002). While no single factor or...

  4. 75 FR 13492 - Certain Frozen Warmwater Shrimp From India: Initiation of Antidumping Duty Changed-Circumstances...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-03-22

    ... Antidumping Duty Order: Certain Frozen Warmwater Shrimp from India, 70 FR 5147 (Feb. 1, 2005) (Shrimp Order... of China: Final Results of Changed Circumstances Antidumping Duty Administrative Review, 70 FR 69941... Review: Polychloroprene Rubber from Japan, 67 FR 58 (Jan. 2, 2002). While no single factor or...

  5. Simulated and Actual Effects of the Brown Shrimp, Penaeus aztecus, Closure in Mexico

    E-print Network

    overfishing on brown shrimp, Penaeus aztecus, and to as sess the effects ofa closed season inshore overfishing of the stock. ./ /" / Figure 1.-The brown shrimp fishery area in the States of Tamaulipas growth overfishing, a closed sea son was proposed and implemented by the Fisheries Secretariat

  6. Lysozyme gene expression by hemocytes of Pacific white shrimp, Litopenaeus vannamei, after injection with Vibrio

    E-print Network

    Burnett, Louis E.

    injection with Vibrio Erin J. Burge*, Daniel J. Madigan, Louis E. Burnett, Karen G. Burnett Grice Marine and in circulating hemocytes for 48 h following challenge with the shrimp pathogen Vibrio campbellii Baumann rights reserved. Keywords: Litopenaeus vannamei; Shrimp; Hemocyte; Vibrio; Lysozyme; Gene expression

  7. 78 FR 50379 - Certain Frozen Warmwater Shrimp From Thailand: Final Negative Countervailing Duty Determination

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-08-19

    ... Shrimp From Thailand: Preliminary Countervailing Duty Determination, 78 FR 33350 (June 4, 2013..., ``Certain Frozen Warmwater Shrimp from Ecuador, India, Indonesia, Malaysia, People's Republic of China... and 31 of the IPA Are Export Contingent or Otherwise Specific Comment 2: Whether Tax Exemptions...

  8. DUAL STRUcrURAL EQUILIBRIUM IN THE FLORIDA SHRIMP PROCESSING INDUSTRY

    E-print Network

    DUAL STRUcrURAL EQUILIBRIUM IN THE FLORIDA SHRIMP PROCESSING INDUSTRY JOSE ALVAREZ, CHRIS O. ANDREW of firms in Florida shrimp processing industry for the 1959-71 period were studied by utilizing Markov Chain analysis. Forecasts over time predict that a structural equilibrium in the industry

  9. 76 FR 12025 - Certain Frozen Warmwater Shrimp From India: Preliminary Results of Antidumping Duty...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-03-04

    ...The Department of Commerce (Department) is conducting an administrative review of the antidumping duty order on certain frozen warmwater shrimp (shrimp) from India with respect to 202 companies.\\1\\ The respondents which the Department selected for individual examination are Apex Exports (Apex) and Falcon Marine Exports Limited (Falcon). The respondents which were not selected for individual......

  10. 76 FR 8338 - Certain Frozen Warmwater Shrimp From the People's Republic of China: Preliminary Results and...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-02-14

    ...The Department of Commerce (``Department'') is conducting an administrative review of the antidumping duty order on certain frozen warmwater shrimp (``shrimp'') from the People's Republic of China (``PRC''), covering the period of review (``POR'') of February 1, 2009, through January 31, 2010. As discussed below, the Department preliminarily determines that the respondent in this review did......

  11. 75 FR 17693 - Certain Frozen Warmwater Shrimp from Brazil, India, and Thailand: Notice of Initiation of...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-04-07

    ...The Department of Commerce (Department) received timely requests to conduct administrative reviews of the antidumping duty orders on certain frozen warmwater shrimp (shrimp) from Brazil, India and Thailand. The anniversary month of these orders is February. In accordance with 19 CFR 351.221, we are initiating these administrative...

  12. 77 FR 40848 - Certain Frozen Warmwater Shrimp From India: Final Results of Antidumping Duty Administrative...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-07-11

    ...On March 6, 2012, the Department of Commerce (the Department) published the preliminary results of the administrative review of the antidumping duty order on certain frozen warmwater shrimp (shrimp) from India. The period of review (POR) is February 1, 2010, through January 31, 2011. Based on our analysis of the comments received, we have made certain changes to the margin calculations.......

  13. Scanning electron microscope observations of brine shrimp larvae from space shuttle experiments

    NASA Technical Reports Server (NTRS)

    DeBell, L.; Paulsen, A.; Spooner, B.

    1992-01-01

    Brine shrimp are encysted as gastrula stage embryos, and may remain dehydrated and encysted for years without compromising their viability. This aspect of brine shrimp biology is desirable for studying development of animals during space shuttle flight, as cysts placed aboard a spacecraft may be rehydrated at the convenience of an astronaut, guaranteeing that subsequent brine shrimp development occurs only on orbit and not on the pad during launch delays. Brine shrimp cysts placed in 5 ml syringes were rehydrated with salt water and hatched during a 9 day space shuttle mission. Subsequent larvae developed to the 8th larval stage in the sealed syringes. We studied the morphogenesis of the brine shrimp larvae and found the larvae from the space shuttle experiments similar in rate of growth and extent of development, to larvae grown in sealed syringes on the ground. Extensive differentiation and development of embryos and larvae can occur in a microgravity environment.

  14. Preparation and evaluation of two microbiological media from shrimp heads and hulls.

    PubMed Central

    Stephens, N L; Bough, W A; Beuchat, L R; Heaton, E K

    1976-01-01

    Two peptones were extracted from raw shrimp waste after autolytic digestion. Digests were derived from shrimp heads and shrimp hulls, both of which are by-products of the shrimp processing industry. Digests were evaluated for suitability in supporting growth of microorganisms by measuring the total cell mass produced by five genera of bacteria and five genera of fungi in broths formulated from the peptones. Comparison was made to five commercially available medium preparations and a catfish peptone. A 0.5% solution of the lyophilized shrimp head digest, heated at 121 C for 15 min, resulted in a cloudy suspension. However, the digest supported excellent growth of fungi and good growth of bacteria. A heated 0.5% solution of the hull digest was clear and supported good growth of both bacteria and fungi. PMID:942199

  15. Predation by dipteran larvae on fairy shrimp (Crustacea: Anostraca) in Utah rock pools

    USGS Publications Warehouse

    Graham, T.B.

    1994-01-01

    A series of experiments examined how ecological factors affect notonectid foraging success on fairy shrimp. Variation in pond depth over natural ranges had no direct effect on notonectid ability to capture fairy shrimp. Decreases in water clarity over natural ranges led to decreased notonectid ability to capture fairy shrimp. This corresponds with the observation that six weeks after the fairy shrimp hatched they were more likely to be present in cloudy ponds than in ponds containing clearer water. If correct, this is a situation where physical factors have a major effect on how a biological interaction influences the local distribution of species. It appears water depth indirectly affects notonectid foraging rates, as shallow ponds are apparently made cloudy by wind-driven waves disturbing the bottom mud. These results suggest the notonectid-fairy shrimp interaction will not be a constant for any given pond, but will depend on abiotic factors like amount of rainfall and frequency of windy conditions.

  16. A study of the incidence of Vibrio parahaemolyticus in Malaysian shrimp undergoing processing for export.

    PubMed

    Cann, D C; Taylor, L Y; Merican, Z

    1981-12-01

    The incidence of Vibrio parahaemolyticus in products of the Malaysian export shrimp processing industry was investigated through the stages from the catch to that of the cooked, peeled and frozen product. The organism was commonly found in freshly caught and landed shrimp, and could be detected by enrichment culture at all stages of processing. The number of V. parahaemolyticus in shrimp varied from nil to 4x10(4), and 19 of the 50 serotypes in the current antigenic scheme were found, O1-K38 and O1-K32 occurring most often. All the isolates were Kanagawa-negative; one strain was a sucrose-positive variant. The study indicated that specifications of 10(2) g-1 for V. parahaemolyticus in raw tropical shellfish are too stringent but that the Malaysian shrimp industry should be able to meet this requirement for cooked shrimp. PMID:7310127

  17. Immune response and disease resistance of shrimp fed biofloc grown on different carbon sources.

    PubMed

    Ekasari, Julie; Hanif Azhar, Muhammad; Surawidjaja, Enang H; Nuryati, Sri; De Schryver, Peter; Bossier, Peter

    2014-12-01

    The objective of this study was to document the immunological effects of growing shrimp in biofloc systems. The experiment consisted of four types of biofloc systems in which bioflocs were produced by daily supplementation of four different carbon sources, i.e. molasses, tapioca, tapioca-by-product, and rice bran, at an estimated C/N ratio of 15 and a control system without any organic carbon addition. Each biofloc system was stocked with Pacific white shrimp (Litopenaeus vannamei) juveniles that were reared for 49 days. The use of tapioca-by-product resulted in a higher survival (93%) of the shrimp as compared to the other carbon sources and the control. The highest yield and protein assimilation was observed when tapioca was used as the carbon source. After 49 days, phenoloxidase (PO) activity of the shrimp grown in all biofloc systems was higher than that of the shrimp from the control system. Following a challenge test by injection with infectious myonecrosis virus (IMNV), the levels of PO and respiratory burst (RB) activity in the shrimp of all biofloc treatments were higher than that of the challenged shrimp from the control treatment. An increased immunity was also suggested by the survival of the challenged shrimp from the experimental biofloc groups that was significantly higher as compared to the challenged shrimp from the control treatment, regardless of the organic carbon source used to grow the bioflocs. Overall, this study demonstrated that the application of biofloc technology may contribute to the robustness of cultured shrimp by immunostimulation and that this effect is independent of the type of carbon source used to grow the flocs. PMID:25218685

  18. Isotopic Incorporation Rates and Discrimination Factors in Mantis Shrimp Crustaceans

    PubMed Central

    deVries, Maya S.; del Rio, Carlos Martínez; Tunstall, Tate S.; Dawson, Todd E.

    2015-01-01

    Stable isotope analysis has provided insights into the trophic ecology of a wide diversity of animals. Knowledge about isotopic incorporation rates and isotopic discrimination between the consumer and its diet for different tissue types is essential for interpreting stable isotope data, but these parameters remain understudied in many animal taxa and particularly in aquatic invertebrates. We performed a 292-day diet shift experiment on 92 individuals of the predatory mantis shrimp, Neogonodactylus bredini, to quantify carbon and nitrogen incorporation rates and isotope discrimination factors in muscle and hemolymph tissues. Average isotopic discrimination factors between mantis shrimp muscle and the new diet were 3.0 ± 0.6 ‰ and 0.9 ± 0.3 ‰ for carbon and nitrogen, respectively, which is contrary to what is seen in many other animals (e.g. C and N discrimination is generally 0–1 ‰ and 3–4 ‰, respectively). Surprisingly, the average residence time of nitrogen in hemolymph (28.9 ± 8.3 days) was over 8 times longer than that of carbon (3.4 ± 1.4 days). In muscle, the average residence times of carbon and nitrogen were of the same magnitude (89.3 ± 44.4 and 72.8 ± 18.8 days, respectively). We compared the mantis shrimps’ incorporation rates, along with rates from four other invertebrate taxa from the literature, to those predicted by an allometric equation relating carbon incorporation rate to body mass that was developed for teleost fishes and sharks. The rate of carbon incorporation into muscle was consistent with rates predicted by this equation. Our findings provide new insight into isotopic discrimination factors and incorporation rates in invertebrates with the former showing a different trend than what is commonly observed in other animals. PMID:25835953

  19. Pathogenesis of acute hepatopancreatic necrosis disease (AHPND) in shrimp.

    PubMed

    Lai, Hung-Chiao; Ng, Tze Hann; Ando, Masahiro; Lee, Chung-Te; Chen, I-Tung; Chuang, Jie-Cheng; Mavichak, Rapeepat; Chang, Sheng-Hsiung; Yeh, Mi-De; Chiang, Yi-An; Takeyama, Haruko; Hamaguchi, Hiro-O; Lo, Chu-Fang; Aoki, Takashi; Wang, Han-Ching

    2015-12-01

    Acute hepatopancreatic necrosis disease (AHPND), also called early mortality syndrome (EMS), is a recently emergent shrimp bacterial disease that has resulted in substantial economic losses since 2009. AHPND is known to be caused by strains of Vibrio parahaemolyticus that contain a unique virulence plasmid, but the pathology of the disease is still unclear. In this study, we show that AHPND-causing strains of V. parahaemolyticus secrete the plasmid-encoded binary toxin PirAB(vp) into the culture medium. We further determined that, after shrimp were challenged with AHPND-causing bacteria, the bacteria initially colonized the stomach, where they started to produce PirAB(vp) toxin. At the same early time point (6 hpi), PirB(vp) toxin, but not PirA(vp) toxin, was detected in the hepatopancreas, and the characteristic histopathological signs of AHPND, including sloughing of the epithelial cells of the hepatopancreatic tubules, were also seen. Although some previous studies have found that both components of the binary PirAB(vp) toxin are necessary to induce a toxic effect, our present results are consistent with other studies which have suggested that PirB(vp) alone may be sufficient to cause cellular damage. At later time points, the bacteria and PirA(vp) and PirB(vp) toxins were all detected in the hepatopancreas. We also show that Raman spectroscopy "Whole organism fingerprints" were unable to distinguish between AHPND-causing and non-AHPND causing strains. Lastly, by using minimum inhibitory concentrations, we found that both virulent and non-virulent V. parahaemolyticus strains were resistant to several antibiotics, suggesting that the use of antibiotics in shrimp culture should be more strictly regulated. PMID:26549178

  20. Status of selected bottomfish and crustacean species in Prince William Sound following the Exxon Valdez oil spill

    SciTech Connect

    Armstrong, D.A.; Dinnel, P.A.; Orensanz, J.M.

    1995-12-31

    Exposure and possible adverse effects of the Exxon Valdez oil spill (EVOS) at depth were studied between 1989 and 1991 on several species of crustaceans, molluscs, and finfish that are characterized by ontogenetic shifts in distribution from meroplanktonic larvae to benthic and demersal juveniles and adults. The authors approach was to search for (1) evidence of exposure to Exxon Valdez crude oil (EVC) at depth (generally between 20 to 150 m) and (2) measurable perturbations at both the individual and population levels. Primary species targeted were Tanner crab (Chionoecetes bairdi), several pandalid shrimps (Pandalus platyceros, P. hypsinotus, P. borealis), flathead sole (Hippoglossoides elassodon), and several bivalves including scallops (Chlamys rubida) and infaunal clams (Nuculana, Yoldia, and Macoma spp.). The survey design provided a comparison between variables measured in oiled bays around Knight Island and non-oiled bays at other locations within Prince William Sound. Polycyclic aromatic hydrocarbons (PAHs) of petrogenic origin were measured in all bays sampled in this study and levels of PAHs derived from EVC were elevated in the oiled bays following the spill, yet attenuated to less than 200 ng/g sediment by 1991. 95 refs., 22 figs., 6 tabs.

  1. Transmission of white spot syndrome virus (WSSV) from Dendronereis spp. (Peters) (Nereididae) to penaeid shrimp.

    PubMed

    Haryadi, D; Verreth, J A J; Verdegem, M C J; Vlak, J M

    2015-05-01

    Dendronereis spp. (Peters) (Nereididae) is a common polychaete in shrimp ponds built on intertidal land and is natural food for shrimp in traditionally managed ponds in Indonesia. White spot syndrome virus (WSSV), an important viral pathogen of the shrimp, can replicate in this polychaete (Desrina et al. 2013); therefore, it is a potential propagative vector for virus transmission. The major aim of this study was to determine whether WSSV can be transmitted from naturally infected Dendronereis spp. to specific pathogen-free (SPF) Pacific white shrimp Litopenaeus vannamei (Boone) through feeding. WSSV was detected in naturally infected Dendronereis spp. and Penaeus monodon Fabricius from a traditional shrimp pond, and the positive animals were used in the current experiment. WSSV-infected Dendronereis spp. and P. monodon in a pond had a point prevalence of 90% and 80%, respectively, as measured by PCR. WSSV was detected in the head, gills, blood and mid-body of Dendronereis spp. WSSV from naturally infected Dendronereis spp was transmitted to SPF L. vannamei and subsequently from this shrimp to new naïve-SPF L. vannamei to cause transient infection. Our findings support the contention that Dendronereis spp, upon feeding, can be a source of WSSV infection of shrimp in ponds. PMID:24716813

  2. The effects of Aloe vera (Aloe barbadensis) coating on the quality of shrimp during cold storage.

    PubMed

    Soltanizadeh, Nafiseh; Mousavinejad, Mohsen S

    2015-10-01

    Green tiger shrimp (Penaeus semisulcatus) is an important aquaculture species worldwide. Its perishable nature, however, needs preservation methods to ensure its quality and shelf life. In this study, the effects of Aloe vera coating on the quality and shelf life of shrimps during cold storage were investigated. Shrimp samples were dipped in aqueous solutions containing 25%, 50%, 75%, and 100% Aloe vera gel before storage at 4 °C for 7 days. Drip loss, pH, TBA, TVB-N, and texture of both the control and treated shrimp samples were analyzed periodically. There were significant differences between coated shrimps and the control group in all parameters evaluated. Aloe vera at 75% and 100% concentrations was able to prevent lipid oxidation and drip loss properly; however, coatings containing 25% Aloe vera did not have the desired effects on these characteristics. Shrimps coated with higher concentrations of Aloe vera had better textural properties during cold storage. Results also indicated the positive effects of Aloe vera coating on the sensory quality of shrimp. PMID:26396412

  3. Hydrostatic pressure affects selective tidal stream transport in the North Sea brown shrimp (Crangon crangon).

    PubMed

    Tielmann, Moritz; Reiser, Stefan; Hufnagl, Marc; Herrmann, Jens-Peter; Eckardt, André; Temming, Axel

    2015-10-01

    The brown shrimp (Crangon crangon) is a highly abundant invertebrate in the North Sea, with its life cycle stages ranging from deep offshore spawning to shallow onshore nursery areas. To overcome the long distances between these two habitats, brown shrimp are suspected to use selective tidal stream transport (STST), moving with the cyclic tide currents towards their preferred water depths. However, it is not known which stimulus actually triggers STST behavior in brown shrimp. In this work, we determined the influence of different hyperbaric pressures on STST behavior of juvenile brown shrimp. Brown shrimp activity was recorded in a hyperbaric pressure chamber that supplied constant and dynamic pressure conditions simulating different depths, with and without a tidal cycle. Subsequent wavelet and Fourier analysis were performed to determine the periodicity in the activity data. The results of the experiments show that STST behavior in brown shrimp varies with pressure and therefore with depth. We further show that STST behavior can be initiated by cyclic pressure changes. However, an interaction with one or more other environmental triggers remains possible. Furthermore, a security ebb-tide activity was identified that may serve to avoid potential stranding in shallow waters and is 'remembered' by shrimp for about 1.5?days without contact with tidal triggers. PMID:26347562

  4. Evaluation of green tea extract as a glazing material for shrimp frozen by cryogenic freezing.

    PubMed

    Sundararajan, Srijanani; Prudente, Alfredo; Bankston, J David; King, Joan M; Wilson, Paul; Sathivel, Subramaniam

    2011-09-01

    Solutions of green tea (Camellia sinensis) extract (GTE) in distilled water were evaluated as a glazing material for shrimp frozen by cryogenic freezing. Total of 2%, 3%, and/or 5% GTE solutions (2GTE, 3GTE, 5GTE) were used for glazing. Distilled water glazed (GDW) and nonglazed shrimp (NG) served as controls. The GTE was characterized by measuring color, pH, (o) Brix, total phenols, and % antiradical activity. Individual catechins were identified by HPLC. The freezing time, freezing rate, and energy removal rate for freezing shrimp by cryogenic freezing process were estimated. The frozen shrimp samples were stored in a freezer at -21 °C for 180 d. Samples were analyzed for pH, moisture content, glazing yield, thaw yield, color, cutting force, and thiobarbituric acid reactive substances (TBARS) after 1, 30, 90, and 180 d. The HPLC analysis of GTE revealed the presence of catechins and their isomers and the total polyphenol content was 148.10 ± 2.49 g/L. The freezing time (min) and energy removal rate (J/s) were 48.67 ± 2.3 and 836.67 ± 78.95, respectively. Glazed samples had higher moisture content compared to NG shrimp after 180 d storage. GTE was effective in controlling the lipid oxidation in shrimp. Glazing with GTE affected a* and b* color values, but had no significant effect on the L* values of shrimp. PMID:22417550

  5. Prevalence and Antimicrobial Resistance of Vibrio spp. in Retail and Farm Shrimps in Ecuador.

    PubMed

    Sperling, L; Alter, T; Huehn, S

    2015-11-01

    The aim of this study was to investigate the prevalence of Vibrio spp. in shrimp at retail and in shrimp farms in Ecuador and to determine the antimicrobial agent resistance patterns of farm isolates. The presence of genes linked to early mortality syndrome (EMS) or acute hepatopancreatic necrosis disease (AHPND) also was evaluated. Vibrio spp. were isolated from retail shrimps in Cuenca, Ecuador, and farm shrimps originating from provinces El Oro and Guayas, Ecuador. A total of 229 shrimp samples were collected, of which 71 originated from retail markets in Cuenca and 158 came from shrimp farms. Overall, 219 (95.6%) samples tested positive for Vibrio spp. Vibrio parahaemolyticus (80.8%) was the most common species detected, followed by Vibrio alginolyticus (50.2%), Vibrio cholerae (11.3%), and Vibrio vulnificus (3.5%). None of the V. parahaemolyticus isolates carried the virulence-associated tdh and trh genes. In V. parahaemolyticus shrimp farm isolates, high resistance was found to ampicillin (92.2%), and intermediate resistance was found to tetracycline (51.3%) and amikacin (22.1%). Of the V. parahaemolyticus strains, 68 were resistant to at least three antimicrobial agents, and 2 were resistant to seven antimicrobial agents simultaneously. Up to 18 resistant isolates were found for V. alginolyticus, whereas V. vulnificus and V. cholerae isolates were more susceptible. None of the V. parahaemolyticus isolates carried the EMS-AHPND plasmid. The results of this study revealed the ubiquitous occurrence of Vibrio spp. in shrimps at retail and on shrimp farms in Ecuador. PMID:26555534

  6. Characterization of intestinal bacteria in wild and domesticated adult black tiger shrimp (Penaeus monodon).

    PubMed

    Rungrassamee, Wanilada; Klanchui, Amornpan; Maibunkaew, Sawarot; Chaiyapechara, Sage; Jiravanichpaisal, Pikul; Karoonuthaisiri, Nitsara

    2014-01-01

    The black tiger shrimp (Penaeus monodon) is a marine crustacean of economic importance in the world market. To ensure sustainability of the shrimp industry, production capacity and disease outbreak prevention must be improved. Understanding healthy microbial balance inside the shrimp intestine can provide an initial step toward better farming practice and probiotic applications. In this study, we employed a barcode pyrosequencing analysis of V3-4 regions of 16S rRNA genes to examine intestinal bacteria communities in wild-caught and domesticated P. monodon broodstock. Shrimp faeces were removed from intestines prior to further analysis in attempt to identify mucosal bacterial population. Five phyla, Actinobacteria, Fusobacteria, Proteobacteria, Firmicutes and Bacteroidetes, were found in all shrimp from both wild and domesticated environments. The operational taxonomic unit (OTU) was assigned at 97% sequence identity, and our pyrosequencing results identified 18 OTUs commonly found in both groups. Sequences of the shared OTUs were similar to bacteria in three phyla, namely i) Proteobacteria (Vibrio, Photobacterium, Novosphingobium, Pseudomonas, Sphingomonas and Undibacterium), ii) Firmicutes (Fusibacter), and iii) Bacteroidetes (Cloacibacterium). The shared bacterial members in P. monodon from two different habitats provide evidence that the internal environments within the host shrimp also exerts selective pressure on bacterial members. Intestinal bacterial profiles were compared using denaturing gradient gel electrophoresis (DGGE). The sequences from DGGE bands were similar to those of Vibrio and Photobacterium in all shrimp, consistent with pyrosequencing results. This work provides the first comprehensive report on bacterial populations in the intestine of adult black tiger shrimp and reveals some similar bacterial members between the intestine of wild-caught and domesticated shrimp. PMID:24618668

  7. A Brine Shrimp Bioassay for Measuring Toxicity and Remediation of Chemicals

    NASA Astrophysics Data System (ADS)

    Lieberman, Marya

    1999-12-01

    A bioassay using Artemia franciscana (brine shrimp) was adapted to measure the toxicity of household chemicals. One project is described in which students collect dose-response curves for seven commercial flea-killing products. Next, groups of students researched the insecticidal ingredients of the flea products. On the basis of the structures of the active ingredients, they chose remediation methods to make the flea product less toxic to brine shrimp; procedures included copper-catalyzed hydrolysis, adsorption onto activated charcoal, bleach treatment, and photodegradation. No special equipment or supplies are necessary for the bioassay other than the brine shrimp eggs, which can be obtained at any aquarium store.

  8. Complete mitochondrial genome of the hydrothermal vent ghost shrimp Paraglypturus tonganus (Crustacea, Axiidea, Callianassidae).

    PubMed

    Kim, Se-Joo; Kim, Jonguk; Ahn, Dong-Ha; Ju, Se-Jong; Min, Gi-Sik; Kim, Sanghee

    2016-03-01

    Ghost shrimps are burrowing decapods that serve as bioturbators and habitat providers in seafloor environments. The hydrothermal vent ghost shrimp, Paraglypturus tonganus, was collected from a hydrothermal vent in the Tonga Arc. This species has a mitochondrial genome (mitogenome) of 15,924?bp in length with an AT content of 66.1%. The mitogenome was identical to the typical gene arrangement and transcriptional polarity of the infraorder Axiidea. Paraglypturus tonganus showed 65.3-70.1% nucleotide similarity with the known mitogenomes of other axiid shrimps. These results are useful for understanding the phylogenetic relationships among the members of Axiidea within the decapods. PMID:24963774

  9. Effect of chitosan-based edible coating on preservation of white shrimp during partially frozen storage.

    PubMed

    Wu, Shengjun

    2014-04-01

    Chitosan and chitooligosaccharides are preservatives with proven antibacterial activity, while glutathione has antioxidant activity. This study investigated the effects of chitosan coating combined with chitooligosaccharides and glutathione (0.8% glutathione+1% chitooligosaccharides+1% chitosan) on preservation of white shrimp (Penaeus vannamei) during partially frozen storage. Chitosan-based coating treatments effectively inhibited bacterial growth, reduced total volatile basic nitrogen and malondialdehyde, and basically maintained the sensory properties of white shrimp (P. vannamei) during partially frozen storage. Therefore, chitosan-based edible coating combined with chitooligosaccharides and glutathione could be a promising antimicrobial and oxidant method to prevent metamorphism of white shrimp with extended shelf life. PMID:24491494

  10. Structure of Penaeus stylirostris Densovirus, a Shrimp Pathogen

    SciTech Connect

    Kaufmann, Bärbel; Bowman, Valorie D.; Li, Yi; Szelei, Jozsef; Waddell, Peter J.; Tijssen, Peter; Rossmann, Michael G.

    2010-11-16

    Penaeus stylirostris densovirus (PstDNV), a pathogen of penaeid shrimp, causes significant damage to farmed and wild shrimp populations. In contrast to other parvoviruses, PstDNV probably has only one type of capsid protein that lacks the phospholipase A2 activity that has been implicated as a requirement during parvoviral host cell infection. The structure of recombinant virus-like particles, composed of 60 copies of the 37.5-kDa coat protein, the smallest parvoviral capsid protein reported thus far, was determined to 2.5-{angstrom} resolution by X-ray crystallography. The structure represents the first near-atomic resolution structure within the genus Brevidensovirus. The capsid protein has a {beta}-barrel 'jelly roll' motif similar to that found in many icosahedral viruses, including other parvoviruses. The N-terminal portion of the PstDNV coat protein adopts a 'domain-swapped' conformation relative to its twofold-related neighbor similar to the insect parvovirus Galleria mellonella densovirus (GmDNV) but in stark contrast to vertebrate parvoviruses. However, most of the surface loops have little structural resemblance to any of the known parvoviral capsid proteins.

  11. Contests with deadly weapons: telson sparring in mantis shrimp (Stomatopoda).

    PubMed

    Green, P A; Patek, S N

    2015-09-01

    Mantis shrimp strike with extreme impact forces that are deadly to prey. They also strike conspecifics during territorial contests, yet theoretical and empirical findings in aggressive behaviour research suggest competitors should resolve conflicts using signals before escalating to dangerous combat. We tested how Neogonodactylus bredini uses two ritualized behaviours to resolve size-matched contests: meral spread visual displays and telson (tailplate) strikes. We predicted that (i) most contests would be resolved by meral spreads, (ii) meral spreads would reliably signal strike force and (iii) strike force would predict contest success. The results were unexpected for each prediction. Contests were not resolved by meral spreads, instead escalating to striking in 33 of 34 experiments. The size of meral spread components did not strongly correlate with strike force. Strike force did not predict contest success; instead, winners delivered more strikes. Size-matched N. bredini avoid deadly combat not by visual displays, but by ritualistically and repeatedly striking each other's telsons until the loser retreats. We term this behaviour 'telson sparring', analogous to sparring in other weapon systems. We present an alternative framework for mantis shrimp contests in which the fight itself is the signal, serving as a non-lethal indicator of aggressive persistence or endurance. PMID:26399976

  12. 75 FR 32915 - Certain Frozen Warmwater Shrimp From Brazil: Notice of Rescission of Antidumping Duty...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-06-10

    ..., or Suspended Investigation; Opportunity to Request Administrative Review, 75 FR 5037 (February 1... and Thailand: Notice of Initiation of Administrative Reviews, 75 FR 17693 (April 7, 2010) (Initiation... International Trade Administration Certain Frozen Warmwater Shrimp From Brazil: Notice of Rescission...

  13. 78 FR 33342 - Certain Frozen Warmwater Shrimp From the Socialist Republic of Vietnam: Preliminary...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-06-04

    ... wild-caught (ocean harvested) or farm-raised (produced by aquaculture), head-on or head-off, shell-on... warmwater shrimp and prawns, whether wild-caught (ocean harvested) or farm-raised (produced by...

  14. 78 FR 64009 - Frozen Warmwater Shrimp From China, Ecuador, India, Malaysia, and Vietnam

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-10-25

    ...Frozen Warmwater Shrimp From China, Ecuador, India, Malaysia, and Vietnam Determinations...retarded by reason of imports from China, Ecuador, India, Malaysia, and Vietnam of frozen...subsidized by the Governments of China, Ecuador, India, Malaysia, and...

  15. 78 FR 11221 - Frozen Warmwater Shrimp From China, Ecuador, India, Indonesia, Malaysia, Thailand, and Vietnam

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-02-15

    ...Frozen Warmwater Shrimp From China, Ecuador, India, Indonesia, Malaysia, Thailand...injured by reason of imports from China, Ecuador, India, Indonesia, Malaysia, Thailand...subsidized by the Governments of China, Ecuador, India, Indonesia, Malaysia,...

  16. 78 FR 50110 - Frozen Warmwater Shrimp From China, Ecuador, India, Indonesia, Malaysia, Thailand, and Vietnam...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-08-16

    ...INTERNATIONAL TRADE COMMISSION [Inv. Nos. 701-TA-491-497 (Final)] Frozen Warmwater Shrimp From China, Ecuador, India, Indonesia, Malaysia, Thailand, and Vietnam; Commission Determination To Deny a Request To Hold a Portion of...

  17. Use of a Brine Shrimp Assay to Study Herbal Teas in the Classroom.

    ERIC Educational Resources Information Center

    Opler, Annette; Mizell, Rebecca; Robert, Alexander; Cervantes-Cervantes, Miguel; Kincaid, Dwight; Kennelly, Edward J.

    2002-01-01

    Introduces a brine shrimp assay to demonstrate the effects of the biological activity of herbal remedies. Describes two protocols, one using aqueous extracts and the other using methanol extracts. (Contains 21 references.) (YDS)

  18. 76 FR 6603 - Certain Frozen Warmwater Shrimp from Thailand; Notice of Amended Final Results of Antidumping...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-02-07

    ... Review, 72 FR 52065 (Sept. 12, 2007). The period of review (POR) is August 4, 2004, through January 31... Gallant Ocean (Thailand) Co., Ltd. (Gallant Ocean), an exporter of Thai shrimp to the United States....

  19. Nutritional Contribution of Phytoplankton to the Pacific White Shrimp Litopenaeus vannamei 

    E-print Network

    Sanchez Corrales, Dagoberto Raul

    2012-07-16

    The goal of this study was to characterize the nutritional contribution of microalgae to white-legged shrimp and optimize fish meal (FM) and fish oil (FO) inclusion levels in their diets in the presence of microalgae. ...

  20. DISEASES, PARASITES, AND TOXIC RESPONSES OF COMMERCIAL PENAEID SHRIMPS OF THE GULF OF MEXICO

    E-print Network

    are a virus, bacteria, fungi, protozoa, hel, minthes, and nematodes. A well·described Baculovirus infects. The ciliate protozoa Zoothamnium sp., Lagenophrys sp., and Parauronema sp. may cause dysfunction in shrimp

  1. 75 FR 12188 - Certain Frozen Warmwater Shrimp from Thailand: Preliminary Results of Antidumping Duty...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-03-15

    ...administrative review for 185 companies. These companies are listed in the Department's...Warmwater Shrimp from Brazil, India, and Thailand: Notice [[Page...received submissions from certain companies that indicated they had no...

  2. Crassostrea gigas oysters as a shrimp farm bioindicator of white spot syndrome virus.

    PubMed

    Vazquez-Boucard, C; Escobedo-Fregoso, C; Duran-Avelar, Ma de J; Mercier, L; Llera-Herrera, R; Escobedo-Bonilla, C; Vibanco-Perez, N

    2012-04-26

    This study explored whether Crassostrea gigas oysters can be used as a bioindicator of white spot syndrome virus (WSSV) in shrimp farm water canals. Bioassays showed that C. gigas can accumulate WSSV in their gills and digestive glands but do not become infected, either by exposure to seawater containing WSSV or by cohabitation with infected shrimp. The use of a WSSV nested PCR to screen oysters placed in water canals at the entry of a shrimp farm allowed WSSV to be detected 16 d prior to the disease occurring. The finding that C. gigas can concentrate small amounts of WSSV present in seawater without being harmed makes it an ideal sentinel species at shrimp farms. PMID:22535870

  3. 78 FR 50385 - Certain Frozen Warmwater Shrimp from India: Final Affirmative Countervailing Duty Determination

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-08-19

    ... Warmwater Shrimp From India: Preliminary Countervailing Duty Determination, 78 FR 33344 (June 4, 2013...) from India. For information on the estimated subsidy rates, see the ``Suspension of Liquidation... ``all others'' rate includes export subsidies. We determine the total estimated net...

  4. Seizing a species : the story of the Great Salt Lake brine shrimp harvest

    E-print Network

    Wotipka, Samuel Alex

    2014-01-01

    In the early 1950s, C.C. "Sparkplug" Sanders began harvesting brine shrimp from Utah's Great Salt Lake. Sanders built up a small business selling their eggs, called "cysts, to aquarium stores across the country. During the ...

  5. Complete mitochondrial DNA sequence of a tadpole shrimp (Triops cancriformis) and analysis of museum samples.

    PubMed

    Umetsu, Kazuo; Iwabuchi, Naruki; Yuasa, Isao; Saitou, Naruya; Clark, Paul F; Boxshall, Geoff; Osawa, Motoki; Igarashi, Keiji

    2002-12-01

    The complete mitochondrial DNA (mtNDA) of the tadpole shrimp Triops cancriformis was sequenced. The sequence consisted of 15,101 bp with an A+T content of 69%. Its gene arrangement was identical with those sequences of the water flea (Daphnia pulex) and giant tiger prawn (Penaeus monodon), whereas it differed from that of the brine shrimp (Artemia franciscana) in the arrangement of its genes for tRNAs. Phylogenetic analysis revealed T. cancriformis to be more closely related to the water flea than to the brine shrimp and giant tiger prawn. We also compared the 16S rRNA sequences of five formalin-fixed tadpole shrimps that had been collected in five different locations and stored in a museum. The sequence divergence was in the range of 0-1.51%, suggesting that those samples were closely related to each other. PMID:12481263

  6. Clonal Occurrence of Salmonella Weltevreden in Cultured Shrimp in the Mekong Delta, Vietnam

    PubMed Central

    Noor Uddin, Gazi Md.; Larsen, Marianne Halberg; Barco, Lisa; Minh Phu, Tran; Dalsgaard, Anders

    2015-01-01

    This study investigated the occurrence, serovar and antimicrobial resistance of Salmonella spp. in shrimp samples from intensive and extensive farms located in three different provinces in the Mekong Delta, Vietnam. Shrimp from 11 of the 48 farms all contained S. Weltevreden, except for one farm yielding S. Agona, with no difference in Salmonella occurrence between the two production systems. Pulsed field gel electrophoresis (PFGE) of S. Weltevreden showed closely related XbaI pulse types, suggesting a clonal relationship despite the farms and shrimp samples being epidemiologically unrelated. S. Weltevreden was susceptible to most antimicrobials tested, with a few strains being resistant to florfenicol, chloramphenicol, sulfamethoxazole or trimethoprim. Future studies of the ecology of S. Weltevreden should establish if this serovar may survive better and even multiply in warm-water shrimp farm environments compared to other Salmonella serovars. PMID:26222547

  7. The potential of Yucca schidigera extract to reduce the ammonia pollution from shrimp farming.

    PubMed

    Santacruz-Reyes, Roberto A; Chien, Yew-Hu

    2012-06-01

    This study investigated the feasibility of using Yucca schidigera extract (YUPE) to reduce ammonia pollution resulting from shrimp farming. YUPE was added at ratios of 18, 36, and 72 mg L(-1) to effluent from an experimental shrimp culture system containing total ammonia nitrogen (TAN) of 0.592, 0.672, and 0.718 mg L(-1). TAN reduction increased with an increase in YUPE, and at 18 mg L(-1) reduced TAN by 71-72% and 86-87% at 6 and 24h, respectively. Shrimp feed containing YUPE at 300, 600, and 1200 mg kg(-1) was submerged, allowing the ammonia to leach out. The addition of YUPE in feed reduced TAN leaching by 50-83% compared with the control. The application of YUPE in water or feed could considerably reduce the accumulation of ammonia in waste water discharge during shrimp production, thereby providing a feasible solution to ammonia pollution in coastal environments. PMID:22440573

  8. A Synthesis of Cost and Revenue Surveys for Gulf of Mexico Shrimp Vessels

    E-print Network

    fisheries. In the case of the shrimp fishery, a number of cost and revenue survey stud ies have been reported in current rather than constant or real dollars. As a result, comparisons of these stud ies do

  9. 77 FR 38266 - Sea Turtle Conservation; Shrimp Trawling Requirements; Public Hearing

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-06-27

    ...Atmospheric Administration 50 CFR Part 223 RIN 0648-BC10 Sea Turtle Conservation; Shrimp Trawling Requirements; Public Hearing...and wing nets (butterfly trawls) rigged for fishing to use turtle excluder devices (TEDs) in their nets, which was...

  10. 77 FR 37647 - Sea Turtle Conservation; Shrimp Trawling Requirements; Public Hearing Notification

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-06-22

    ...Atmospheric Administration 50 CFR Part 223 RIN 0648-BC10 Sea Turtle Conservation; Shrimp Trawling Requirements; Public Hearing...and wing nets (butterfly trawls) rigged for fishing to use turtle excluder devices (TEDs) in their nets, which was...

  11. Intraspecific relationships among the stygobitic shrimp Typhlatya mitchelli, by analyzing sequence data from mitochondrial DNA 

    E-print Network

    Webb, Michael Scott

    2004-09-30

    Intraspecific relationships among the anchialine cave shrimp Typhlatya mitchelli were examined by sequencing a total of 1505 bp from portions of three mitochondrial DNA genes. Cytochrome b, cytochrome oxidase I, and 16S rRNA were partially...

  12. Does dinoflagellate bioluminescence deter shrimp grazing? An investigation into the Burglar Alarm Hypothesis

    E-print Network

    Jackson, Robert B.

    1 Does dinoflagellate bioluminescence deter shrimp grazing? An investigation into the Burglar Alarm Hypothesis #12;2 Abstract: Bioluminescence, the emission of light by living organisms, has evolved from bioluminescence because it increases their primary consumers' conspicuousness to secondary

  13. 76 FR 40881 - Certain Frozen Warmwater Shrimp From Thailand: Final Results of Antidumping Duty Administrative...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-07-12

    ...state of processing; (3) fresh shrimp and prawns whether shell...1) That is produced from fresh (or thawed-from-frozen...dusting'' layer of rice or wheat flour of at least 95 percent purity...0.73 K...

  14. 77 FR 40574 - Certain Frozen Warmwater Shrimp From Thailand: Final Results of Antidumping Duty Administrative...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-07-10

    ...state of processing; (3) fresh shrimp and prawns whether shell...1) that is produced from fresh (or thawed-from-frozen...dusting'' layer of rice or wheat flour of at least 95 percent purity...1.38 K...

  15. 78 FR 50383 - Certain Frozen Warmwater Shrimp From the Republic of Indonesia: Final Negative Countervailing...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-08-19

    ...: Negative Preliminary Countervailing Duty Determination, 78 FR 33349 (June 4, 2013) (Preliminary... suspend liquidation of entries of subject merchandise. \\4\\ See Preliminary Determination, 78 FR 33349... International Trade Administration Certain Frozen Warmwater Shrimp From the Republic of Indonesia:...

  16. Requirements of shrimp, Penaeus chinensis O'sbeck for potassium, sodium, magnesium and iodine

    NASA Astrophysics Data System (ADS)

    Liu, Fa-Yi; Li, He-Fang; Wang, Hui-Liang; Liang, De-Hai; Tian, Yu-Chuan

    1995-06-01

    Potassium, sodium, magnesium and iodine requirements of shrimp, Penaeus chinensis were studied. Orthogonal design was employed in this experiment. The composition of the basal diet consisted of fish meal, peanut cake, corn meal, soybean cake, wheat bran, vitamin mix and mineral mix, and supplementations of potassium, sodium, magnesium and iodine in the basal diet were made according to the L9(34) orthogonal table. The results indicated that iodine supplementation improved growth of the shrimp significantly and raised survival very significantly, iodine requirement of the shrimp was 0.003%; sodium requirement was 0.87% or less; and that 1.1 1.3% potassium and 0.18 0.38% magnesium in the diet were proper nutrition supplements for the shrimp.

  17. 50 CFR 654.24 - Shrimp/stone crab separation zones.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ...FISHERY CONSERVATION AND MANAGEMENT, NATIONAL OCEANIC AND ATMOSPHERIC ADMINISTRATION, DEPARTMENT OF COMMERCE STONE CRAB FISHERY OF THE GULF OF MEXICO Management Measures § 654.24 Shrimp/stone crab separation zones. Five zones...

  18. 50 CFR 654.24 - Shrimp/stone crab separation zones.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ...FISHERY CONSERVATION AND MANAGEMENT, NATIONAL OCEANIC AND ATMOSPHERIC ADMINISTRATION, DEPARTMENT OF COMMERCE STONE CRAB FISHERY OF THE GULF OF MEXICO Management Measures § 654.24 Shrimp/stone crab separation zones. Five zones...

  19. 78 FR 764 - Frozen Warmwater Shrimp From China, Ecuador, India, Indonesia, Malaysia, Thailand, and Vietnam...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-01-04

    ...Ecuador, India, Indonesia, Malaysia, Thailand, and Vietnam; Institution of Countervailing...Ecuador, India, Indonesia, Malaysia, Thailand, and Vietnam of frozen warmwater shrimp...Ecuador, India, Indonesia, Malaysia, Thailand, and Vietnam. Unless the...

  20. ASPECTS OF BROWN SHRIMP, PENAEUS AZTECUS, GROWTH IN THE NORTHERN GULF OF MEXICO

    E-print Network

    ) throughout the year (Cook and Lindner 1970). Eggs hatch within 14-18 h Cook and Murphy 1966) and larvae undergo metamorphosis within 12-15 days (Cook and Lindner 1970>. Shrimp then migrate into es- tuaries

  1. 78 FR 15686 - Certain Frozen Warmwater Shrimp From Thailand: Preliminary Results of Antidumping Duty...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-03-12

    ...Department selected for individual examination are Marine Gold Products Limited (Marine Gold), and Thai Union Frozen Products Public Co...shrimp from Thailand produced and exported by Marine Gold. Finally, the Department also preliminarily...

  2. Genetic improvement of Pacific white shrimp [Penaeus (Litopenaeus) vannamei]: perspectives for genomic selection

    PubMed Central

    Castillo-Juárez, Héctor; Campos-Montes, Gabriel R.; Caballero-Zamora, Alejandra; Montaldo, Hugo H.

    2015-01-01

    The uses of breeding programs for the Pacific white shrimp [Penaeus (Litopenaeus) vannamei] based on mixed linear models with pedigreed data are described. The application of these classic breeding methods yielded continuous progress of great value to increase the profitability of the shrimp industry in several countries. Recent advances in such areas as genomics in shrimp will allow for the development of new breeding programs in the near future that will increase genetic progress. In particular, these novel techniques may help increase disease resistance to specific emerging diseases, which is today a very important component of shrimp breeding programs. Thanks to increased selection accuracy, simulated genetic advance using genomic selection for survival to a disease challenge was up to 2.6 times that of phenotypic sib selection. PMID:25852740

  3. 78 FR 50389 - Certain Frozen Warmwater Shrimp From Ecuador: Final Affirmative Countervailing Duty Determination

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-08-19

    ...: Preliminary Negative Countervailing Duty Determination, 78 FR 33347 (June 4, 2013) (Preliminary Determination... Warmwater Shrimp from Ecuador, India, Indonesia, Malaysia, People's Republic of China, Thailand, and... from the National Finance Corporation and the National Development Bank; and, (4) Export Restraints...

  4. 50 CFR Figures 19a and 19b to Part... - Chauvin Shrimp Deflector Installation Details

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    50 Wildlife and Fisheries 10 2012-10-01 2012-10-01 false Chauvin Shrimp Deflector Installation Details 19a Figures 19a and 19b to Part 223 Wildlife and Fisheries NATIONAL MARINE FISHERIES SERVICE, NATIONAL...

  5. 50 CFR Figures 19a and 19b to Part... - Chauvin Shrimp Deflector Installation Details

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    50 Wildlife and Fisheries 10 2013-10-01 2013-10-01 false Chauvin Shrimp Deflector Installation Details 19a Figures 19a and 19b to Part 223 Wildlife and Fisheries NATIONAL MARINE FISHERIES SERVICE, NATIONAL...

  6. Genetic characterization of the burrowing shrimp (Neotrypaea californiensis) in Washington and Oregon estuaries

    EPA Science Inventory

    The Ghost shrimp, (Neotrypaea californiensis) are burrowers, which have a wide demographic distribution along the United States Pacific Coast. Our study used genetic analysis to estimate the source populations of larvae recruiting into estuaries to allow a greater understanding ...

  7. Effects of ghost shrimp on zinc and cadmium in sediments from Tampa Bay, FL

    USGS Publications Warehouse

    Klerks, P.L.; Felder, D.L.; Strasser, K.; Swarzenski, P.W.

    2007-01-01

    This study investigated the effects that ghost shrimp have on the distribution of metals in sediment. We measured levels of HNO3-extractable zinc and cadmium in surface sediment, in ghost shrimp burrow walls and in sediment ejected by the ghost shrimp from their burrows, at five sandy intertidal sites in Tampa Bay. Ghost shrimp densities and their rate of sediment ejection were also quantified, as were sediment organic content and silt + clay content. Densities of ghost shrimp (Sergio trilobata and Lepidophthalmus louisianensis) averaged 33/m2 at our sites, and they ejected sediment at an average rate of 28 g/burrow/day. Levels of both Zn and Cd were significantly higher in burrow walls than in surface sediments. Sediment ejected by the shrimp from their burrows had elevated levels of Zn (relative to surface sediments) at one of the sites. Sediment organic content and silt + clay content were higher in burrow-wall sediments than in ejected sediment, which in turn tended to have values above those of surface sediments. Differences in levels of HNO3-extractable Zn and Cd among sediment types may be a consequence of these sediments differing in other physiochemical characteristics, though the differences in metal levels remained statistically significant for some sites after correcting for differences in organic content and silt + clay content. We conclude that the presence of ghost shrimp burrows contributes to spatial heterogeneity of sedimentary metal levels, while the ghost shrimp bioturbation results in a significant flux of metals to the sediment surface and is expected to decrease heterogeneity of metal levels in sedimentary depth profiles.

  8. Effect of stocking density on extensive production of freshwater shrimp in coal mine reclamation ponds

    SciTech Connect

    Tidwell, J.H.; Wynne, F.; Coyle, S.D.; Grey, B.; McGuire, J.

    1998-12-31

    The use of post-mining reclamation ponds for the production of freshwater shrimp was evaluated by examining different stocking densities. Juvenile shrimp (Macrobrachium rosenbergii) averaging 0.5g each were stocked into four existing ponds at Peabody`s Ken Surface Mine at 6,175; 12,350; 18,500; and 24,700/ha (2,500, 5,000, 7,500, and 10,000/acre) on June 1, 1995. Shrimp were fed twice a week for 103 days, with harvest conducted September 13, 1995. Survival averaged 40%, overall. Average individual weight size was inversely related to stocking density ranging from 52 g (8.7 shrimp/lb) at 6,175/ha to 20.3 g (22.7 shrimp/lb) at 18,500/acre. Total production was directly related to stocking density ranging from 97 kg/ha (86 lbs/acre) at low density to 211 kg/ha (188 lbs/acre) at 18,500/ha shrimp acre. The major difficulty was at harvest due to difficulty in draining ponds. Construction of designed culture ponds with gravity drains during reclamation could greatly enhance survival, harvestability, and commercial feasibility.

  9. Differential expression of microRNAs in shrimp Marsupenaeus japonicus in response to Vibrio alginolyticus infection.

    PubMed

    Zhu, Fei; Wang, Zhi; Sun, Bao-Zhen

    2016-02-01

    Till date numerous microRNAs (miRNAs) have been discovered from various organisms, including mammals, plants, insects, nematodes and viruses. They are known to have antiviral functions in crustaceans such as shrimp Marsupenaeus japonicas. However, little is known about the role of miRNAs against bacterial infection in this shrimp caused by Vibrio alginolyticus. We performed small RNA sequencing to characterize the differentially expressed microRNAs in V. alginolyticus challenged shrimp, in comparison to that in control uninfected shrimp, at 24 h and 48 h. In total, 55 host miRNAs were differentially expressed in response to the infection and most of these were downregulated at both the time-points. TargetScan and miRanda algorithms showed that the target genes of these down-regulated miRNAs were related to innate immune functions such as production of phenoloxidase enzyme, apoptosis and phagocytosis. Further, gene ontology analysis revealed that many immune signaling pathways were mediated by these miRNAs. This study is one of the earliest attempts at characterizing shrimp miRNAs that respond to V. alginolyticus infection, and will help unravel the miRNA pathways involved in antibacterial action in shrimp. PMID:26483347

  10. Unruly women and invisible workers: the shrimp traders of Mazatlán, Mexico.

    PubMed

    Cruz-Torres, María L

    2012-01-01

    During the 1980s, a group of women from rural communities in the Mexican state of Sinaloa organized a grassroots social movement in order to gain legal access to the sale of shrimp. The movement reached its peak in 1984, with the formation of a shrimp traders union and the establishment of a shrimp marketplace in the tourist city of Mazatlán. Despite the long trajectory of the movement and the success of the shrimp market, these women and their work have been completely ignored by government agencies in charge of the development and management of the fishing industry. For the most part, one gets to read about the shrimp traders only in tourist-oriented brochures depicting them as a “local attraction,” something to be seen while one is touring the city on a private charter bus en route to the Archaeological Museum or to the upscale jewelry shops in the Golden Zone. In this article, I examine how women used their gender and their identity as rural workers to defy the state and its policies, overcome poverty, and take control of the local marketing of shrimp. Another objective of this article is to show why and how women engaged in collective action so they could be legitimized as workers and how gender shaped their individual experiences. PMID:22545273

  11. Effects of gamma irradiation on chemical, microbial quality and shelf life of shrimp

    NASA Astrophysics Data System (ADS)

    Hocao?lu, Asl?; Sükrü Demirci, Ahmet; Gümüs, Tuncay; Demirci, Mehmet

    2012-12-01

    In the present study the combined effect of gamma irradiation (1, 3 and 5 kGy) and storage at two temperatures: refrigeration (+4 °C) and frozen (-18 °C), on the shelf-life extension of fresh shrimp meat was investigated. The study was based on microbiological and physicochemical changes occuring in the shrimp samples. Total volatile base nitrogen values and trimethylamine values for irradiated shrimp samples were significantly lower than non-irradiated samples at both storage temperatures, and the rate of decrease was more pronounced in samples irradiated at the higher dose (p<0.05). Thiobarbituric acid values for irradiated shrimp samples were significantly higher than non-irradiated samples at both storage temperatures (p<0.05). pH values of shrimp samples were affected significantly by both irradiating dose and storage temperatures (p<0.05). Microbial counts for non-irradiated shrimp samples were higher than the respective irradiated samples at both storage temperatures (p<0.05). The results revealed that irradiation at high dose (5 kGy) might enhance lipid oxidation, although the growth of microorganisms and protein oxidation was inhibited.

  12. Spatial distributions of grass shrimp (Palaemonetes pugio) populations in southeastern estuarine ecosystems influenced by urbanization

    SciTech Connect

    Scott, G.; Daugomah, J.; Devane, J.; Porter, D.; Edwards, D.

    1995-12-31

    Urbanization of coastal regions has resulted in the increased discharge of polycyclic aromatic hydrocarbons trace metals and habitat changes/modifications in adjacent upland areas which may affect grass shrimp populations. A study was conducted comparing larval abundance and adult grass shrimp biomass, abundance, size structure and sex ratios in an urbanized estuary, Murrells Inlet with pristine North Inlet, a NOAA national estuarine research reserve and sanctuary site. A total of 60 sites were sampled during the peak of grass shrimp abundance and compared in terms of spatial distributions and other relevant ancillary information. Factors such as sediment contaminant levels, physico-chemical parameters and land-use habitat modification were statistically compared using a Geographical Information Processing (GIP) techniques and appropriate spatial statistical methods. GIP results indicated similar levels of larval abundance in both estuaries and identified specific nursery ground regions in both estuaries. Adult grass shrimp abundances were greatly reduced in urban areas and grass shrimp desert regions were identified. These areas were correlated with regions having high levels of chemical contaminants and greatest physical disturbances. The mortality rate between larval and adult stages was much higher in urban areas suggesting that urbanization had a profound impact on grass shrimp.

  13. Assessment and monitoring of nutrient loading in the sediments of tidal creeks receiving shrimp farm effluent in Quang Ninh, Vietnam.

    PubMed

    Bui, Thuyet D; Luong-Van, Jim; Maier, Stefan W; Austin, Chris M

    2013-10-01

    Coastal shrimp farming may lead to the contamination of sediments of surrounding estuarine and marine ecosystems as shrimp farm effluent often contains high levels of pollutants including a range of organic compounds (from uneaten feed, shrimp feces, and living and dead organisms) which can accumulate in the sediments of receiving waterways. The assessment and monitoring of sediment quality in tidal creeks receiving shrimp farm effluent can support environmental protection and decision making for sustainable development in coastal areas since sediment quality often shows essential information on long-term aquatic ecosystem health. Within this context, this paper investigates nutrient loadings in the sediments of tidal creeks receiving shrimp farm effluent in Quang Ninh, Vietnam, which now have a high concentration of intensive and semi-intensive shrimp farms. Sediment samples taken from inside creek sections directly receiving effluent from concentrated shrimp farms (IEC), from main creeks adjacent to points of effluent discharge outside concentrated shrimp farms (OEC), and few kilometers away from shrimp farms (ASF) as reference sites were collected and analyzed before and after shrimp crops to investigate spatial and temporal variation. The results showed that there were statistically significant differences in the concentrations of total nitrogen, total phosphorus, and total organic carbon among IEC, OEC, and ASF sites while the seasonal variation being limited over study times. A sediment nutrient index (SNI) computed from coefficient scores of the factor analysis efficiently summarizes sediment nutrient loads, which are high, albeit quite variable, in canals directly receiving effluents from farms but then decline sharply with distance from shrimp farms. The visualization and monitoring of sediment quality data including SNI on maps can strongly support managers to manage eutrophication at concentrated shrimp farming areas, contributing to sustainable development and management at coastal zones. PMID:23616080

  14. A homologue gene of ?-catenin participates in the development of shrimps and immune response to bacteria and viruses.

    PubMed

    Xie, Ya-Kai; Ding, Ding; Wang, Hui-Min; Kang, Cui-Jie

    2015-11-01

    ?-Catenin is a multifunctional protein that is involved in many physiological processes, including development, cell proliferation, cell migration, and apoptosis. However, the function of ?-Catenin in crustacean is unknown. In this study, the first shrimp homologous gene of ?-catenin in Marsupenaeus japonicus (i.e., Mj?-catenin) was identified and characterized. The full-length of the complementary DNA of Mj?-catenin is 3130 bp, including a 2463 bp open reading frame that encodes 821 amino acid. Multiple alignment of ?-Catenin proteins suggested that the Armadillo/?-Catenin-like repeat domains were conserved. Phylogenetic analysis showed that ?-Catenin from shrimp was clustered into one group with invertebrate ?-Catenin. The transcription of ?-catenin in various development stages of shrimp was detected and persistently increased as the shrimp matured. In adult shrimp, ?-catenin was widely distributed in detected tissues and has the relatively high expression level in gills, hemocytes, testes, and ovaries. The transcripts of ?-catenin in tissues of adult shrimp were significantly up-regulated at various time points after infecting with Staphylococcus aureus, Vibrio anguillarum, and white-spot syndrome virus. Furthermore, knockdown of ?-catenin resulted in impaired bacterial clearance ability and increased virus copy in shrimp in vivo. Therefore, ?-Catenin in shrimp participates in the development and immune response of shrimps. PMID:26334791

  15. Relating large-scale climate variability to local species abundance: ENSO forcing and shrimp in Breton Sound, Louisiana, USA

    USGS Publications Warehouse

    Piazza, Bryan P.; LaPeyre, Megan K.; Keim, B.D.

    2010-01-01

    Climate creates environmental constraints (filters) that affect the abundance and distribution of species. In estuaries, these constraints often result from variability in water flow properties and environmental conditions (i.e. water flow, salinity, water temperature) and can have significant effects on the abundance and distribution of commercially important nekton species. We investigated links between large-scale climate variability and juvenile brown shrimp Farfantepenaeus aztecus abundance in Breton Sound estuary, Louisiana (USA). Our goals were to (1) determine if a teleconnection exists between local juvenile brown shrimp abundance and the El Niño Southern Oscillation (ENSO) and (2) relate that linkage to environmental constraints that may affect juvenile brown shrimp recruitment to, and survival in, the estuary. Our results identified a teleconnection between winter ENSO conditions and juvenile brown shrimp abundance in Breton Sound estuary the following spring. The physical connection results from the impact of ENSO on winter weather conditions in Breton Sound (air pressure, temperature, and precipitation). Juvenile brown shrimp abundance effects lagged ENSO by 3 mo: lower than average abundances of juvenile brown shrimp were caught in springs following winter El Niño events, and higher than average abundances of brown shrimp were caught in springs following La Niña winters. Salinity was the dominant ENSO-forced environmental filter for juvenile brown shrimp. Spring salinity was cumulatively forced by winter river discharge, winter wind forcing, and spring precipitation. Thus, predicting brown shrimp abundance requires incorporating climate variability into models.

  16. 76 FR 64307 - Certain Frozen Warmwater Shrimp From the Socialist Republic of Vietnam: Amended Final Results and...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-10-18

    ... Results and Final Partial Rescission of Antidumping Duty Administrative Review, 76 FR 56158 (September 12...-caught warmwater species include, but are not limited to, whiteleg shrimp (Penaeus vannemei),...

  17. LINKING HABITAT CHANGE AND NUTRIENT DYNAMICS: COMPARISON OF FOOD WEBS AND NITROGEN FLUXES IN BURROWING SHRIMP- AND OYSTER-DOMINATED HABITATS

    EPA Science Inventory

    Endemic thalassinid burrowing shrimps are simultaneously dominant ecosystem engineering species and economic pests within Pacific estuaries. Dense populations of two shrimps (Neotrypaea californiensis and Upogebia pugettensis) commonly occupy >75% of intertidal and shallow subti...

  18. Hepatopancreatic nuclease of black tiger shrimp Penaeus monodon unlikely to be involved in viral triggered apoptosis.

    PubMed

    Molthathong, Sudkhate; Rojtinnakorn, Jiraporn; Senapin, Saengchan; Flegel, Timothy W

    2007-06-01

    Nucleases are phosphodiesterases that hydrolyze DNA and/or RNA. In a search for shrimp nucleases involved in apoptosis, we discovered a nuclease from hepatopancreatic cDNA of the black tiger shrimp Penaeus monodon. The full-length nuclease gene was amplified and revealed to contain 1668bp corresponding to 381 deduced amino acid residues in the mature enzyme. Sequence analysis indicated 83% nucleic acid identity and 89% amino acid identity to a nuclease from the Kuruma shrimp Penaeus japonicus (also called Marsupenaeus japonicus). Comparative analysis of sequences, conserved motifs and phylogenetic trees indicated that P. monodon nuclease (PMN) belonged to the family of DNA/RNA non-specific endonucleases (DRNSN). RT-PCR analysis using primers specific for PMN mRNA with seven different shrimp tissues revealed that expression in normal shrimp was restricted to the hepatopancreas. Semiquantitative RT-PCR analysis of PMN using hepatopancreatic mRNA from normal shrimp and from shrimp challenged with white spot syndrome virus (WSSV) indicated significant up-regulation of PMN in the hepatopancreas (P<0.05) at the early stage of viral infection but a return to baseline levels as gross signs of disease developed. At the same time, expression was always confined to the hepatopancreas and never seen in other tissues, including those reported to be prime targets for WSSV and subject to increased levels of apoptosis after infection. The results suggested that PMN is probably a digestive enzyme that is unlikely to be involved in hallmark DNA digestion associated with apoptosis. PMID:17049271

  19. Pedobacter nyackensis sp. nov., Pedobacter alluvionis sp. nov. and Pedobacter borealis sp. nov., isolated from Montana flood-plain sediment and forest soil.

    PubMed

    Gordon, Nathan S; Valenzuela, Alejandra; Adams, Sandra M; Ramsey, Philip W; Pollock, Jarrod L; Holben, William E; Gannon, James E

    2009-07-01

    Three Gram-negative, rod-shaped, non-spore-forming eubacterial strains were isolated in western Montana, USA, and subjected to taxonomic studies. Strains NWG-II14(T) and NWER-II11(T) were isolated from hyporheic sediments of a large alluvial flood plain, whereas strain G-1(T) was isolated from a conifer forest soil. On the basis of 16S rRNA gene sequence similarity, strains NWG-II14(T), NWER-II11(T) and G-1(T) were shown to belong to the family Sphingobacteriaceae and are most closely related to various species of the genus Pedobacter. The results of molecular, physiological and biochemical tests allowed genotypic and phenotypic differentiation of these three strains from 23 Pedobacter species with validly published names. The three isolates therefore represent novel species, for which the names Pedobacter nyackensis sp. nov. (type strain NWG-II14(T) =DSM 19625(T) =LMG 24260(T)), Pedobacter alluvionis sp. nov. (type strain NWER-II11(T) =DSM 19624(T) =LMG 24258(T)) and Pedobacter borealis sp. nov. (type strain G-1(T) =DSM 19626(T) =LMG 24259(T)) are proposed. PMID:19542109

  20. CNO ABUNDANCES OF HYDROGEN-DEFICIENT CARBON AND R CORONAE BOREALIS STARS: A VIEW OF THE NUCLEOSYNTHESIS IN A WHITE DWARF MERGER

    SciTech Connect

    Garcia-Hernandez, D. A.; Lambert, David L.; Eriksson, K. E-mail: hinkle@noao.edu E-mail: Kjell.Eriksson@astro.uu.se

    2009-05-10

    We present high-resolution (R {approx} 50, 000) observations of near-IR transitions of CO and CN of the five known hydrogen-deficient carbon (HdC) stars and four R Coronae Borealis (RCB) stars. We perform an abundance analysis of these stars by using spectrum synthesis and state-of-the-art MARCS model atmospheres for cool hydrogen-deficient stars. Our analysis confirms reports by Clayton and colleagues that those HdC stars exhibiting CO lines in their spectrum and the cool RCB star S Aps are strongly enriched in {sup 18}O (with {sup 16}O/{sup 18}O ratios ranging from 0.3 to 16). Nitrogen and carbon are in the form of {sup 14}N and {sup 12}C, respectively. Elemental abundances for CNO are obtained from C I, C{sub 2}, CN, and CO lines. Difficulties in deriving the carbon abundance are discussed. Abundances of Na from Na I lines and S from S I lines are obtained. Elemental and isotopic CNO abundances suggest that HdC and RCB stars may be related objects, and that they probably formed from a merger of an He white dwarf with a C-O white dwarf.