Impact of selected insecticide (Fenvalerate) on the reproductive potential of mutant Drosophila Melanogaster. Influence of age at the time of treatment on sterility

摘要

Fenvalerate induced complete sterility in either sex of mutant (Curled) of Drosophila melanogaster when applied topically check to newly emerged flies a! a dose of 0.007 (mu L/100 mL food. However, the recovery of fertility was recorded as the treatment days increased. In cross combinations, where either male or female or both were treated, egg laying was delayed by 11-19 days as compared to control. Recovery of fertility was faster in F_1 generation. Also, the flies treated at emergence, remained sterile for longer period than the flies treated at maturity. % egg hatch and corrected % sterility in the flies treated at maturity for the first and subsequent three weeks and % egg hatch of successive egg batches in the flies treated on emergence showedthat the F_2 generation was more effective than Fi generation.