The Content of Metals in Tissues and Organs of Fish of Different Trophic Levels in the Estuary of the Kama River

Abstract

© 2019 IOP Publishing Ltd. All rights reserved. The content of metals (Fe, Mn, Al, Zn, As, Cu, Cr, Pb, Ni, Cd) in the tissues and organs of bream and pike perch, living in the rivers Mesha and Kama (tributaries of the Volga River) is compared. It is shown that the accumulation of metals in the tissues and organs of fish depends more on their habitats than on the trophic status of the fish. An increased content of Al, Fe, Mn in the gills and liver of the Meshi River fish was found, which is presumably associated with secondary water pollution from bottom sediments. In the tissues and organs of the fish of the Kama River, the content of Cu, Ni, Cr is higher than in the Meshi fish, without significant differences in their content between species (bream and pike-perch), in contrast to the Meshinsky bay, which distinguishes between the accumulation of metals in tissues and organs bream and pike-perch.