N. N. Belcheva, N. V. Dovzhenko, A. A. Istomina, A. F. Zhukovskaya, S. P. Kukla - The antioxidant system of the Gray’s mussel Crenomytilus grayanus (Dunker, 1853) and the Japanese scallop Mizuhopecten yessoensis (Jay, 1857) (Mollusca: Bivalvia)

BIOLOGIYA MORYA, 2016, Vol. 42, No. 5, pp. 375-380

The antioxidant system of the Gray's mussel Crenomytilus grayanus (Dunker, 1853) and the Japanese scallop Mizuhopecten yessoensis (Jay, 1857) (Mollusca: Bivalvia)

V.I. Il'ichev Pacific Oceanological Institute, Far Eastern Branch, Russian Academy of Sciences, Vladivostok 690041

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This study examines the parameters of the antioxidant system (the activity of antioxidant enzymes-superoxide dismutase, catalase, glutathione peroxidase, and glutathione reductase, as well as the levels of reduced glutathione and integral antioxidant activity) in the digestive gland, gills, gonads, and adductor muscles of two bivalve species: the mussel Crenomytilus grayanus (Dunker, 1853), which lives attached to substrate, and the Japanese scallop Mizuhopecten yessoensis (Jay, 1857), which is capable of free movement. Species- and tissue-specific differences of the antioxidant system of the investigated mollusks are discussed in connection with their physiological and biochemical peculiarities.

Key words: bivalves, antioxidant enzymes, reduced glutathione, lipid peroxidation.