Abstract
Effect of sublethal (20% and 60% of 24h LC50) treatment of crude fruit powder, organic extracts of Tribulus terrestris and active molluscicidal components harmane and harmine were studied on the reproduction of Lymnaea acuminata. It was observed that the crude fruit powder of T. terrestris/ organic extracts and harmane and harmine significantly reduced the fecundity, hatchability and survival of young snail L.acuminata. Maximum reduction in fecundity (16.24% of control) and hatchability (22.88% of control) after 24h was noted in harmane treated snail. No survival was observed after 24h. Significant recovery in reproductive capacity of treated snails was noted in withdrawal group. Fecundity increased upto 75.94% of control after withdrawal from 72h treatment.
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