ANTIOXIDANT STATUS OF RAPANA TISSUES UNDER STRESS CAUSED BY COPPER IONS
Journal Title: Вісник Одеського національного університету. Біологія - Year 2016, Vol 21, Issue 2
Abstract
Rapana venosa is widely spread in the world's oceans and has adapted well to the conditions of different pollution. The study of adaptation options of Rapana was the purpose of this work. We studied the antioxidant system in ctenidium, hepatopancreas and Nephridia gastropod under stress caused by copper ions. The experimental animals were kept for 3, 24 and 72 hours in aquariums with sea water with addition of CuSO4 at 5 and 10 maximum permissible concentrations (MPC). We determined the total antioxidant activity (TAA) and the content of reduced glutathione (GSH). The degree of oxidative damage to biopolymers was evaluated by the level of malondialdehyde (MDA). It was shown that copper ions lead to an increase in MDA and a decrease in the GSH content in ctenidium and hepatopancreas of mollusks. No similar changes were identified in Nephridia. Presence of copper reduced the TAA in ctenidium only the first 3 hours of exposure. TAA in Nephridia hepatopancreas remained at the control level. Changes of tissue antioxidant status of rapana were observed mainly the first few hours (3 and 24) of exposure to copper. For 3 days the studied parameters of antioxidant system mostly did not differ from the control values. It is concluded that the antioxidant system of rapana is resistant to copper and has a great adaptive capacity.
Authors and Affiliations
O. N. Yershova, V. M. Totskyi, V. A. Toptikov, T. I. Lavreniuk, O. O. Kovtun
Keywords
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