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I. M. KONOVETS, O. M. ARSAN, V. V. GRUBINKO

Institute of Hydrobiology National Academy of Sciences of Ukraine, Ternopil Volodymyr Hnatiuk National Pedagogical University

Effectof 20 mkg/L nickel ions on ammonia metabolism in carp (Cyprinus carpio) during 14 days exposure at 7, 20 and 25°C was studied. Accumulation of nickel by organs does not demonstrate temperature-dependent correlations. Favorable temperature conditions (20°C, and to a lesser extent 25°C) facilitate adaptive mechanisms aimed at control of nickel migration in organism. Increasing of ammonia concentration in the gill, kidney and brain at 7°C demonstrates an in adequate functioning of detoxification and excretion processes. Increasing of alanine aminotransferase role in regulation of ammonia homeostasis at low temperatureis found. Active functioning of glutamine system at higher water temperatures (20 and 25°C) provides decreasing or stabilization of endogenous ammonia content under effect of nickel ions.

Key words: Cyprinus carpio, nickel, nitrogen metabolism, ammonia, tissue distribution, adaptation

Опубліковано в 2018. - № 2 (73)

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