To Study Toxic Effects of Heavy Metals Mercuric Chloride on Glycogen Composition on Fresh Water Molluscs Bellamya Bengalensis

AbstractImpact of heavy metal show serious effect on Aquatic creature when it enters in aquatic life. Heavy metals are naturally present in the environment. They are easily accumulated in food chains and some of them are essential to the proper functioning of many biological processes but most of them non-essential for biological processes They are also potentially accumulated in the fresh water environment as well as in organisms. Mercuric chloride (HgCl2) is a heavymetal one of them. Heavy-metal released as wastage through industries but its excessive use and uncontrolled discharge have caused harmful effect on aquatic life Heavy metals that arrival into the aquatic environment create hazardous problem to the biota due to their toxicological effect. in present study was glycogen content in different body parts i.e. Mantle, digestive gland, hepatopancreas, foot, of freshwater Bellamya bengalensis exposed to lethal concentrations of mercury chloride for 24,48,72 and 96 hrs. . Change in the levels of biochemical constituents and suggest that to meet high energy need molluscs was under metal stress. Glycogen content in freshwater mollusca Bellamya bengalensis was altered indicating the effects of HgCl2. hepatopancreas is the most sensitive tissue to cd exposure and that tissue is more suitable for monitoring metal pollution.