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

Abstract

This study examines the parameters of the antioxidant system (the activities of antioxidant enzymes: superoxide dismutase, catalase, glutathione peroxidase, 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 the 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.