DOI: 10.36871 / vet.san.hyg.ecol.201904019
UDC 574.64 + 614.31 + 639.2

Authors

GRIBOVSKY Yu.G., NOKHRIN D.YU., DAVYDOVA N.A., TORCHITSKY A.N.
FSBI URAL FEDERAL AGRICULTURAL RESEARCH CENTER OF THE URAL BRANCH OF THE RUSSIAN ACADEMY OF SCIENCES

Abstract

The article presents the results of a comparative analysis of heavy metal pollution of fish in the framework of a comprehensive expanded ecotoxicological monitoring of freshwater and mineralized lake farms in the Southern Urals with varying degrees of anthropogenic load. Three reservoirs with varying degrees of salinity were studied: Mayan, Kurakli-Mayan and Sugoyak. The atomic absorption spectrophotometric method determined the content of eight heavy metals (TM) in the bone and muscle tissues of fish of various species. It was found that in muscle tissue, the maximum concentrations were iron and zinc, which are necessary for the normal functioning of fish. The greatest variability in the composition of muscle tissue was noted for manganese and cobalt. It was shown that the detected concentrations of HM are within the previously established values ​​for reservoirs in the Chelyabinsk region. The quantities of the studied normalized elements (lead, cadmium) did not exceed the established maximum values ​​for fish and fish products. The increased mineralization of water in the studied lakes is not an obstacle to their use for fishery purposes.

Keywords

fishery ponds, high salinity, water, fish, chemical composition, heavy metals.