CHARACTERISTICS OF DISTRIBUTION OF IONS OF HEAVY METALS IN FRESHWATER MOLLUSKS UNDER THE PARALLEL ACTION OF COPPER IONS AND TREMATODE INVASION

We studied the peculiarities of accumulation of copper ions in the freshwater mol?lusks Lymnaea stagnalis and Planorbarius purpura at experimental conditions of chronic effect (0.5, 2, 5 and 10 of maximum-possible concentration for fisheries) in normal condi?tions and in case of combined action of trematode invasion and specified pollutants. We analyzed the characteristics of distribution of ions of Cu, Pb, Cd and Zn in freshwater mollusks at conditions described. It is found that Trematode infestation leads to changes in the distribution of total content of heavy metal in the body of gastropods. Thus, in the infested P. purpura, investigated tissues and organs were placed in the ascending order: hemolymph