CARBARYL INDUCED CHANGES IN THE ASCORBIC ACID CONTENT IN DIFFERENT TISSUES OF FRESH WATER BIVALVE, PARREYSIA CYLINDRICABHALCHANDRA WAYKAR AND V.S. LOMTEAbstract The indiscriminate use of pesticides causes serious problem in aquatic environment. Effect of commonly used pesticide carbaryl (carbamate) on ascorbic acid level in mantle, foot, gill, digestive gland and whole body of fresh water bivalve, Parreysia cylindrica has been studied. After acute and chronic exposure to carbaryl, the ascorbic acid content in mantle, gill, digestive gland and whole body tissues was decreased, but in foot was increased.
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