Pollution Research Paper

Vol.30, Issue 4, 2011; Page No.(473-476)

HISTOPATHOLOGICAL EFFECTS OF PESTICIDES ON GONADS OF FRESHWATER BIVALVE, PARREYSIA CORRUGATA.

Phirke Pramod and S.P.Zambare

Abstract

Freshwater bivalve, Parreysia corrugata were investigated to determine the histopathological effects of quinalphos and thodan on the gonads. P. corrugata were exposed to sublethal concentrations (LC50/10 for 96 hours.) of quinqlphos (0.108 ppm.) and thiodan (0.0708 ppm.) for the periods of 15 and 30 days. Abnormal development of ovarian and testicular follicles with degeneration and atrophy of gonadal tissues was observed in the gonads of pesticide exposed bivalves. The effect of both the pesticides was almost the same but the severity of the damage was different. Effect of thiodan was more severe than that of quinalphos.

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