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Sample records for aigars indriksons peteris

  1. Two new species of Simulium (Gomphostilbia) (Diptera: Simuliidae) from Peninsular India with keys to Peninsular Indian members of the genus Simulium.

    PubMed

    Anbalagan, Sankarappan; Prasanna, Vimalanathan Arun; Dinakaran, Sundaram; Krishnan, Muthukalingan

    2014-09-17

    Two new species of black flies, Simulium (Gomphostilbia) peteri sp. nov. and S. (G.) takaokai sp. nov., are described on the basis of reared adult, pupal and larval specimens collected from Peninsular India. These two new species are placed in the batoense species group within the subgenus Gomphostilbia. S. (G.) peteri sp. nov. is distinguished in the female by having a medium-sized round opening of the sensory vesicle and a large basal tooth on the claw, in the male by 12 vertical columns in the upper eye large facets, in the pupa by a ventral pair of 2 gill filaments somewhat thicker than the other filaments and in the larva by 5 hypostomal bristles per side lying parallel to the lateral margin. S. (G.) takaokai sp. nov. is characterized in the pupa by having the eight gill filaments with a medium-long common basal stalk and in the larva by the labral fan with 38 main rays and 4 hypostomal bristles on each side. Keys to 13 black fly species reported from Peninsular India are provided for females, males and pupae.

  2. Review of the genus Lesteva Latreille, 1797 of Central Asia (Coleoptera: Staphylinidae: Omaliinae: Anthophagini).

    PubMed

    Shavrin, Alexey V

    2015-06-19

    A taxonomic review of the genus Lesteva Latreille, 1797 of the Central Asia is presented. The type material of the following species was revised: L. bucharica Fauvel, 1900, L. fasciata Luze, 1903, L. nova Bernhauer, 1902, L. transcaspica Bernhauer, 1935 and L. turkestanica Luze, 1904. Lectotypes for L. bucharica and L. turkestanica, a lectotype and paralectotype for L. transcaspica are designated. One species is described as new: L. (s.str.) schuelkei sp. n. (Tajikistan, NW Pamir: Peter-I Mts. and Hissar Mts.). Three synonyms are proposed: L. (s.str.) fasciata=L. (s.str.) turkestanica, syn n.=L. (s.str.) transcaspica, syn. n., L. nova=L. (s.str.) aculeata Shavrin, 2010, syn. n. Three species are redescribed: L. (s.str.) bucharica, L. (s.str.) fasciata and L. (s.str.) nova. All species are illustrated and their distribution mapped. A key to species known from Central Asia, as well as new provincial records for L. (s.str.) barsevskisi Shavrin, 2010, L. (s.str.) bucharica and L. (s.str.) fasciata are provided.

  3. The dismantling of Calliobothrium (Cestoda: Tetraphyllidea) with erection of Symcallio n. gen. and description of two new species.

    PubMed

    Bernot, James P; Caira, Janine N; Pickering, Maria

    2015-04-01

    This paper aims to resolve the dual composition of the triakid shark-hosted tetraphyllidean genus Calliobothrium--an issue that has been recognized for over a decade. As it stands, this genus includes a number of large species with laciniate proglottids, most of which bear 3 suckers at the anterior margin of each bothridium, but it also includes a number of species that lack proglottid laciniations and bear only a single sucker per bothridium, most of which are relatively small. Discovery of 2 new species, 1 of each form, parasitizing the whitespot smoothhound shark, Mustelus palumbes, off South Africa, prompted the first molecular analysis of the genus. Bayesian inference and maximum likelihood analyses of 28S rDNA (D1-D3) sequence data generated for specimens of both new species as well as of 2 known species of the laciniate form (Calliobothrium australis and Calliobothrium cf. verticillatum) and 3 known species of the non-laciniate form (Calliobothrium violae, Calliobothrium riseri, and Calliobothrium barbarae) confirmed the reciprocal monophyly of the 2 clades, supporting establishment of a new genus. Because the type of Calliobothrium, C. verticillatum, is of the laciniate form, Symcallio n. gen., with Symcallio peteri n. gen., n. sp., from M. palumbes described as its type, is established to house members of the non-laciniate clade. The 11 described species consistent with this form are transferred to the new genus. A new species of the laciniate clade, Calliobothrium euzeti n. sp., is described from M. palumbes, and a revised diagnosis of Calliobothrium is presented.

  4. Long-term trends of hypoxia in the coastal zone, north-western Baltic proper

    NASA Astrophysics Data System (ADS)

    Andrén, Thomas; Norbäck Ivarsson, Lena; Andrén, Elinor

    2015-04-01

    The Baltic Sea coastal zone contains over 20 % of all identified hypoxic sites worldwide and shows an increasing trend since 1950 (Conley et al. 2011). In the open Baltic Sea, hypoxia events are recorded during three time periods: about 8000-4000, 2000-800 cal. yr. BP, and from AD 1800 up to present, but in the coastal zone data on long-term trends are lacking (Zillén et al. 2008). Different views have been proposed of what caused the oscillation in the oxygen content at sea bottoms in the open Baltic Sea e.g. changes in agricultural practice, fluctuations in human population density and climate change. The role of humans and climate in driving the eutrophication and hypoxia in the Baltic Sea needs to be understood and there is an urgent need for increased knowledge of the historical extent of hypoxia and the driving forces for formation in the coastal zone. This project aims to disentangle the role of human induced and natural climate-driven processes that have resulted in times of eutrophication and hypoxia in the Baltic Sea during the last 2000 years. Research focus is put on the coastal zone and carefully selected estuaries along the Swedish east coast, where responses to changed human land-use can be expected to be first recorded. Eight sites, from the Stockholm archipelago to Bråviken, have been cored and sediments lithologically described and dated by radiocarbon using preferably terrestrial macrofossils. Preliminary results of age models, sedimentation rates, and lithologies will be presented. Lithological descriptions using laminated sediments as a proxy for hypoxic bottom water conditions will significantly increase the knowledge on the distribution of hypoxia and the extension of areas of laminated sediments in time and space in the coastal area. References: Conley, D.J., Carstensen, J., Aigars, J., Axe, P., Bonsdorff, E., Eremina, T., Haahti, B.-M., Humborg, C., Jonsson, P., Kotta, J., Lännegren, C., Larsson, U., Maximov, A., Rodriguez Medina, M

  5. PREFACE: International Conference on Functional Materials and Nanotechnologies (FM&NT2012)

    NASA Astrophysics Data System (ADS)

    Sternberg, Andris; Muzikante, Inta; Sarakovskis, Anatolijs; Grinberga, Liga

    2012-08-01

    , Institute of Solid State Physics, University of Latvia, Latvia 8. Maris Springis, Institute of Solid State Physics, University of Latvia, Latvia 9. Ilmars Zalite, Institute of Inorganic Chemistry, Riga Technical University, Latvia 10. Janis Zicans, Institute of Polymers, Riga Technical University, Latvia Local Committee Liga Grinberga, Anatolijs Sarakovskis, Jurgis Grube, Maris Kundzins, Anastasija Jozepa, Anna Muratova, Raitis Siatkovskis, Andris Fedotovs, Dmitrijs Bocarovs, Sniedze Abele, Mikus Voss, Andris Sivars, Peteris Lesnicenoks, Virginija Liepina. In Memoriam Dr. habil. phys. Inta Muzikante (08.01.1951-15.02.2012) Inta Muzikante Inta was born in Valmiera, a town in the northern part of Latvia. She attended school in Sigulda and high school in Riga. While at the high-school, Inta decided to study natural sciences. After graduating from high-school in 1969 she entered the physics section of the Physics and Mathematics department of University of Latvia and obtained her university degree in 1974. In parallel with University studies, Inta started to work at the Semiconductor Physics Research Lab at the University of Latvia. After graduating she was offered a position at the Physical Energetics institute of the Latvian Academy of Sciences, in the laboratory of Professor Edgars Silinsh, one of the most internationally well known Latvian physicists. Inta started researching electronic and photoelectric processes in organic crystals and thin films. This was a novel field, pioneered both internationally and in Latvia by Profesors E Silinsh, O Neilands and J Freimanis. It could be said that Inta stood at the cradle of this research field and stayed faithful to it all of her life. Her work was very successful and within a few years she advanced from research assistant to researcher and then leading research scientist. Her first scientific topic was studies of the mechanism of charge carrier photogeneration and separation in organic molecular crystals. In 1983 for a work