The present study describes the antioxidant role of zinc sulphate induce toxicity in an experimental model the freshwater mussel, Lamellidens consobrinus. The effect of mussels was studied under five groups, Group A was maintained as control, Group B mussels were exposed to chronic LC50/10 doses and zinc sulphate (o.21 ppm) for 21 days, while group C mussels were exposed to respective chronics concentrations of heavy metals with 5 ml /lit and extract from Capsicum annum. The glycogen content from all groups were estimated after 7,14 and 21 days. Mussels from group B were divided into two groups after 21 days exposure to heavy metal into D and E group. Mussels and D groups were allowed to cure naturally. While those with Capsicum annum L. (5ml/liter) and their glycogen content were studied after 7,14 and 21 days. Remarkable decrease in the glycogen content was observed in zinc exposed mussels. The group exposed to heavy metal along with extract from Capsicum annum L. showed more glycogen content than those exposed to heavy metals. Pre exposed mussels to heavy metals showed fast recovery and higher glycogen content than those which were allowed to cure naturally. The probable antioxidant role of extract from Capsicum annum L. is discussed in the present paper.
