A new species of Acroperus Baird, 1843 (Cladocera: Chydoridae) is described based on the material from Lake Tana, Ethiopia and two water bodies in Eastern Cape, Republic of South Africa. In Africa, Acroperus africanus sp. nov. had a chance to be confused by previous authors with Palearctic A. harpae (Baird, 1834) and A. angustatus Sars, 1863, but it could be easily distinguished from the latter...

> Abstract Phylogeny of Branchiopoda (Crustacea) has received intensive attention the last decade and a widely accepted full resolution of the relationships between the major branchiopod taxa is close. Various well-preserved fossil branchiopods (e.g., Castracollis, Lepidocaris, Kazacharthra, Leptodorosida) combine characters from major recent taxa and are therefore necessary for a full understa...

The present study of cladocera of the genus Chydorus from South Vietnam revealed a new species, C. idrisi sp. nov. and a rare species, C. breviceps (Stingelin, 1905). C. idrisi sp. nov. belongs to the C. eurynotus Sars, 1901 group, characterized by small labral plate with rounded tip and by absence of honeycomb sculpture on the valves. C. idrisi sp. nov. differs from other species of the group ...

Clostridium bifermentans serovar malaysia (C.b.m.) is highly toxic to mosquito larvae. In this study, the following aquatic nontarget invertebrates were treated with high C.b.m. concentrations (up to 1,600-fold the toxic concentration for Anopheles stephensi) to study their susceptibility towards the bacterial toxin: Planorbis planorbis (Pulmonata); Asellus aquaticus (Isopoda); Daphnia pulex (C...

The invertebrate communities of the northern Chilean rivers are characterised by their marked endemism andspecificity of their community structure in different basins. The river systems located in the Atacama Desert are endorheicand are affected by the rainy period of January-February commonly known as the “Bolivian winter“. The present study isthe first report on the observations of arthropods...

We examined the population genetics of six species of marine cladocerans, using a »600 bp fragment of the cytochrome oxidase subunit I gene sequence. Phylogenetic analysis revealed signiWcant intraspeciWc, semiallopatric phylogenetic breaks in four out of Wve species belonging to the Podonidae, supporting an ancient radiation and oceanic expansion for this group. By contrast, Penilia avirostris...