BACKGROUND Fully asexually reproducing taxa lack outcrossing. Hence, the classic Biological Species Concept cannot be applied. METHODOLOGY/PRINCIPAL FINDINGS We used DNA sequences from the mitochondrial COI gene and the nuclear ITS2 region to check species boundaries according to the evolutionary genetic (EG) species concept in five morphospecies in the putative ancient asexual ostracod gener...

BACKGROUND & OBJECTIVES An efficient larvivorous fish must show a predilection for mosquito larvae in the presence of alternative preys. This study compares the feeding capacity and preference of Aphyosemion gularis exposed to different kinds of aquatic macroinvertebrates. METHODS Various prey organisms such as Anopheles larvae and pupae, Culex larvae, chironomid larvae and ostracods were eit...

I. G. Sohn and Louis S. Kornicker. Morphology of Cypretta kawatai Sohn and Kornicker, 1972 (Crustacea, Ostracoda), with a Discussion of the Genus. Smithsonian Contribution to Zoology, number 141, 28 pages, 18 figures, 1973.—All 34 species previously referred to Cypretta are reviewed, and four of these are removed from the genus because they lack the characteristic anterior septate margins. The ...

Unambiguously biramous appendages with a proximal precoxa, well-defined coxa and basis, setose plate-like epipod originating on the precoxa, and both an endopod and exopod attached to the terminal end of the basis are described from several living Ostracoda of the order Halocyprida (Myodocopa). These limbs are proposed as the best choice for comparison of ostracode limbs with those of other cru...

Three new species of Ostracoda, Loxoconcha noharai sp. nov., L. santosi sp. nov. and L. sesokoensis sp. nov., are described from the Okinawa Islands, southern Japan. The two species Loxoconcha noharai sp. nov. and L. santosi sp. nov. live in estuaries, whereas the species L. sesokoensis sp. nov. lives in coral reefs. These species can be easily distinguished from other previously described Loxo...

The present work aims to study the Zooplankton seasonal distribution and diversity in Karanja reservoir, Bidar district for the period of two years from October 2001 to September 2003. We have recorded 36 species of which, 15 species belongs to rotifera, 11 species belongs to cladocera, nine species belongs to copepoda and ostracoda three species. Among zooplankton, particularly rotifera was th...

a detailed study of ostracoda changes against the stable isotopes of carbon and oxygen acrossthe cenomanian-turonian boundary mass extinction has been fully documented in one section, the south ofengland. this section comprises the uppermost cenomanian to lowermost turonian strata. the comparisonbetween the results obtained in this research and two rival models for the cenomanian-turonian bound...

--___-___-__„___-_-_______________________ Introduction.. _ _____________________________________ Stratigraphic Summary__________________________ Mesozoic and older rocks in Esso Standard Oil Co. Hatteras Light well No. 1___________________ Mesozoic rocks in Esso Standard Oil Co. North Carolina Esso well No. 2______________________ Stratigraphic distribution of the Ostracoda________ Systematic ...

Morphologically similar Boroecia borealis and B. maxima are redescribed from the Central Arctic. Their morphological differences are minor but well defined. Their geographic and vertical distribution is studied based on an extensive body of materials collected by many expeditions in the Arctic Ocean during the period from 1929 to 1993 at the depth range of 0-4000 m. The comparison of the distri...