Activity of Aminotransferases and Alkaline Phosphatase in the Gonads of Round Goby and Knout Goby

About the author:

Irina I. Chesnokova, Researcher, Ecotoxicological Laboratory, A. O. Kovalevsky Institute of Marine Biological Research of the RAS (Sevastopol); mirenri@bk.ru

Abstract:

The activity of aminotransferases and alkaline phosphatase in the gonads of the round and knout gobies was studied. Activity of the tested enzymes in the knout goby was higher than in the gonads of the round goby. In both species a significantly great activity of enzymes in males was shown. Significant differences of the activity of enzymes at different stages of the reproductive cycle in the gonads of the round goby have not been found, while in the case of the knout goby the maximum values were observed during the pre-spawning period. The activity of the studied enzymes in gonads decrease in older knout goby. The toxic and adaptive response of the examined enzymes to the contamination of the tested water areas was noted: the maximum activity of the enzymes was in the fish from the Alexandrovskaya Bay, the minimum — in individuals from the Streletskaya Bay.

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