The algorithm is suggested for selecting most appropriate and sensitive bioassay method to a particular type of pollution prevailing in the study area. bases on battery bioassays, which necessarily includes mortality test Daphnia magna Straus, 1820. Other approaches comparing sensitivity methods are selected aim. has been tested model situ samples. According proposed algorithm, tests D. Cerioda...

The planktonic cladocerans Ceriodaphnia richardi, Daphnia gessneri, and birgei inhabit the limnetic littoral zones of Lake Monte Alegre, where former species tends to be abundant. Laboratory experiments were carried out investigate competition for seston in using life table data. In experiment 1, C. richardi D. gessneri fed from zone (1–1.29 mg C L−1); 2, zone. Despite relatively high concentra...

This study concerns a seasonal succession of a large herbivore, Daphnia pule.^, by a smaller one. Crrioduphniu reticulata, in a Minnesota pond. Based on a description of events in the pond and results of several field experiments, one can explain this replacement in terms of a coexploitative interaction between these 2 species. The field experiments. in which pairs of cladocerans were isolated ...