A new species of anomopod related to Alona quadrangularis (Cladocera: Anomopoda: Chydoridae) is described from streams in South Vietnam. Alona kotovi sp. nov. differs from the other species of Alona s. str. (the quadrangularis-group) by the morphology of its postabdomen, labrum and thoracic limbs. The presence of a short spine at the end of the male postabdominal claw is unique to the new speci...

Abstract The widespread acceleration of freshwater salinisation due to human activities, such as pollution, resource extraction and urbanisation coupled with climate change, poses a significant threat aquatic ecosystems. Limited work has been directed towards effects in temporary wetland systems. These systems are characterised by unique crustacean communities reliant on dormant egg production....

This paper evaluates the effects of different time-varying exposure patterns of the strobilurin fungicide azoxystrobin on freshwater microsocosm communities. These exposure patterns included two treatments with a similar peak but different time-weighted average (TWA) concentrations, and two treatments with similar TWA but different peak concentrations. The experiment was carried out in outdoor ...

The present study aimed at evaluating the composition, diversity and short-term temporal fluctuations of zooplankton communities in fish ponds. The study was carried out in two fish ponds, with 180 m(2) of water surface (6 x 30 m) each, located in the Aquiculture Centre of the Pindamonhangaba Fisheries Institute - São Paulo. The study was developed over eight weeks, from February 16 to April 6,...

The objective of the present work was to investigate the influence of four diets on population growth, development, total length, dry weight, and nutritional value of two zooplanktonic species, Moina micrura and Diaphanosoma birgei. The four dietary treatments were: algae alone (A); algae + vitamins (AV); algae + ration (AR); and algae + ration + vitamins (ARV). Growth rate peak for both specie...