ACUTE TOXICITY TESTS OF SULPHIDE TO THE CLAMS PAPHIA MALBARICA AND KATELYSIA OPINIAM.M. Girkar, G.N. Kulkarni, S.B. Satam and S.S. TodkariAbstract Hydrogen sulphide is toxic gas formed due to decomposition of organic matter. Sulphide retards the growth, uptake of food and causes poor growth of aquatic animals. Sometimes high concentration of sulphide may be cause large mortality of aquatic animals. The clams Paphia malbarica and Katelysia opima is of great economic importance, which has rich nutritive values get expose to sulphide solutions at different concentrations. In acute response study involving the young animals (avg. shell length 20-24 mm). The sulphide solution was found to be highly toxic to the both species of clam, as the 96 h LC50 values for P. malbarica and K. opima were 4.49 and 5.67 mg/L respectively.
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