Abstract
In order to assess the impact of cyanobacteria on mollusks under experimental conditions, the interaction of toxic and non-toxic strains of cyanobacteria Microcystis aeruginosa (Kützing) Kützing and bivalve mollusks Unio pictorum (L., 1758) was studied. Cyanobacteria have a negative effect on bivalve mollusks: 40% death of mollusks and deterioration of their adaptive capacity were recorded when co-cultivated with M. aeruginosa at a high cell concentration. At the same time, there was no difference in the mortality of mollusks incubated with toxic and non-toxic cyanobacteria. A decrease in the content of microcystin LR in the presence of bivalves was revealed. No statistically significant increase in the number of cyanobacteria in the water was noted after transit passage through the digestive system of bivalves.
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