Comparative analysis of aminotransferase activities in the gonads of the Black Sea fish from Sevastopol coastal areas
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Abstract
A comparative analysis of aminotransferase (alanine aminotransferase (ALT), aspartate aminotransferase (AST)) activities was performed in the gonads of four Black Sea fish species: European black scorpionfish Scorpaena porсus Linnaeus, 1758, picarel Spicara flexuosum Rafinesque, 1810, golden grey mullet Chelon auratus (Risso, 1810), and annular seabream Diplodus annularis (Linnaeus, 1758) caught in two coastal regions of Sevastopol (Aleksandrovskaya Bay, Karantinnaya Bay). It was established that ALT activity varied from 0.040 ± 0.005 to 0.210 ± 0.020 μmol/hour*mg. The highest enzyme activity values were detected in the testes of black scorpionfish and ovaries of picarel. AST activity ranged from 0.025 ± 0.005 to 0.300 ± 0.050 μmol/hour*mg. Maximum values of enzyme activity were found in the gonads of European black scorpionfish. Also, it was revealed sex differences in enzyme activities. In males of European black scorpionfish, golden grey mullet, and annular seabream activity of aminotransferases was higher compared to females, contrastingly it was higher in picarel females. An increase in enzyme activities was observed in the gonads of the picarel, golden grey mullet, and annular seabream from Aleksandrovskaya Bay compared to Karantinnaya Bay. The results obtained can be useful to monitor the state of fish and their habitats.
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References
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