The estimation of the antioxidant enzymes activity in representatives of different populations of Lymnaea stagnalis differ in the degree of infestation under temperature stress

The aim of this study was to assess the impact of effects of thermal stress and parasitic infestation on the activity of antioxidant enzymes (peroxidase, catalase and glutathione S-transferase) in different populations of wide-spread species of pulmonate mollusk Lymnaea stagnalis from water bodies with different levels of anthropogenic pollution in Belarus - unpolluted Narach Lake and polluted Chizhovsky reservoir. There are several differences were found under thermal stress exposition (35 °С). In non infected mollusсs of both populations the peroxidase activity decreased and activity of catalase increased. An activity of glutathione S-transferase increased in non infested mollusks that inhabit polluted Chizhovsky reservoir.