Weak salinization alleviates the harmful impact of cyanobacteria on water fleas.

Climate change and anthropogenic activities are driving dramatic changes in aquatic ecosystems. In this context, cyanobacterial blooms and freshwater salinization have recently received much attention, however, the comprehensive effects of these stressors on aquatic organisms are complex and have yet to be accurately clarified. This study tested the harmful effects of cyanobacteria and increasing salinity on zooplankton by characterizing the life-history traits and gut microbiota composition in the large-bodied Daphnia pulex and small-bodied Simocephalus vetulus.