Abstract
The separate and combined in vitro effects of heavy metal ions (Cu and Zn) at concentrations of 0.1–25 mg/L on the activities of maltase, sucrase, and amylolytic activity in the intestines of bream and roach caught in areas of the Rybinsk Reservoir differing in anthropogenic loads have been studied. In fish from the polluted Sheksninskii Reach, membrane maltase and sucrase enzymes are less sensitive to the effects of Cu and Zn ions than in fish from the relatively clean Volzhskii Reach. On the other hand, starch-hydrolyzing enzymes were more sensitive to the effects of the metals under study in bream from a polluted area, which was especially evident in summer. The combined effect of Cu and Zn ions (1: 1) in most cases weakens the separate effects of these metals on the activities of hydrolases (except for amylolytic activity) in the studied fish.
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Original Russian Text © I.L. Golovanova, A.A. Filippov, G.M. Chuiko, 2014, published in Biologiya Vnutrennikh Vod, 2014, No. 3, pp. 92–100.
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Golovanova, I.L., Filippov, A.A. & Chuiko, G.M. Effects of heavy metals (Cu and Zn) on digestive glycosidases in benthivorous fish of areas of Rybinsk Reservoir differing in anthropogenic loads. Inland Water Biol 7, 286–293 (2014). https://doi.org/10.1134/S1995082914030080
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DOI: https://doi.org/10.1134/S1995082914030080