Biogeochemical adaptation of fish metabolism to the reduction of anthropogenic load on the subarctic Lake Imandra

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Abstract

The article considers the bioaccumulation of elements in the organs and tissues of whitefish (Coregonus lavaretus L.) from various reaches of Lake Imandra with anthropogenic influence during the period of toxic load reduction. It is shown that the accumulation of elements in the organs and tissues of whitefish depends less on the concentrations in water and is determined more by tolerance to higher concentrations of toxic elements and physiological state. Models of element redistribution in the liver and kidney of whitefish depending on the physiological state of fish are constructed. The strategy of adaptive responses is most clearly manifested in changes in iron and zinc metabolism.

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About the authors

N. A. Gashkina

Vernadsky Institute of Geochemistry and Analytical Chemistry, Russian Academy of Sciences

Author for correspondence.
Email: ngashkina@gmail.com
Russian Federation, Moscow

T. I. Moiseenko

Vernadsky Institute of Geochemistry and Analytical Chemistry, Russian Academy of Sciences

Email: ngashkina@gmail.com

Corresponding Member of the RAS

Russian Federation, Moscow

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2. Fig. 1. Distribution of iron (a) and zinc (b) in organs and tissues depending on the concentration of hemoglobin in the blood (Hb) of whitefish, as well as the distribution of iron (c) and zinc (d) depending on the morbidity index (Z) of whitefish.

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