Assessment of the joint effect of thermal stress, pollution, and parasitic infestation on the activity of antioxidative enzymes in pulmonate mollusk Lymnaea stagnalis

Resumo

This study makes a multifactor analysis of the joint effect of reservoir contamination, parasitic infestation, and experimental hyperthermia on the activity of antioxidative enzymes (peroxidase, catalase, and glutathione S-transferase) in the pulmonate mollusk Lymnaea stagnalis from the clean Naroch Lake and contaminated Chizhovsky Reservoir in the Republic of Belarus. The activity of peroxidase is ascertained to be affected most strongly by the simultaneous effect of parasitic infestation and reservoir contamination and parasitic infestation coupled with experimental hyperthermia. The joint effect of parasitic infestation and reservoir pollution is found to influence the activity of catalase. Meanwhile, no correlation is found between the studied factors and the activity of glutathione S-transferase. It is shown that there is no mutual influence of the three studied factors on the activity of the investigated enzymes.