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Registration Number

0223U000361, 0118U003269 , R & D reports

Title

Morpho-physiological and biochemical mechanisms of adaptation of fish to the conditions of anthropogenically disturbed aquatic ecosystems

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Head

Potrokhov Oleksandr S, Доктор біологічних наук

Registration Date

06-01-2023

Organization

Institute of Hydrobiology of the National Academy of Sciences of Ukraine

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Morphological, physiological-biochemical, neurohumoral and enzymatic mechanisms of adaptation of fish to extreme disturbances of aquatic ecosystems have been elucidated through natural and experimental studies at the population, organismal and cellular levels. The main indicators of the quality of the water environment of agro- and urban ecosystems were studied. Productive and destructive processes in the natural habitats of fish populations are determined. Anthropogenic pollution of reservoirs changes the species composition of ichthyofauna in reservoirs, significantly affects the growth rates of fish and their fertility, manifests itself in the morpho-physiological and biochemical indicators of fish. The biochemical response of fish to the action of anthropogenic factors is species-specific. In the process of adaptation to the conditions of anthropogenically disturbed aquatic ecosystems, stable fish populations are formed to specific environmental conditions. After the return of these fish to favorable environmental conditions, complete readaptation is not observed. The degree of ecological plasticity of various species and the influence of anthropogenic factors can be estimated by indicators of the content of hormones in the blood plasma of fish, the activity of enzymes and the degree of accumulation of reserve substances. At the same time, with prolonged exposure to negative factors, fish adapt to them, but at a different energy level. The obtained results confirm the possibility of monitoring water quality and forecasting fish spawning efficiency based on physiological and biochemical markers. Proposed types of bioindicators for assessing water quality and the ecological state of the reservoir. The possibility of using polluted reservoirs for growing broodstock of fisheries-valuable fish species is shown.

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Vodianitskyi Oleksandr M
Zinkovskyi Oleh Heorgiiovych
Kovalenko Yuliya Olexandrivna
Kofonov Kyrylo
Kunovskyi Yurii V.
Martseniuk Vadym Mykolaiovych
Prychepa Mykola Volodymyrovuch
Fedorenko Leonid Vasyl'ovych
Khudiiash Yurii M.
Schaslyva Olena Leonidovna

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2023-01-06