The effects of the sublethal dose of dichlorvos on egg hatchability of P. turionellae L.

In this study, the effect of various concentrations (0.001, 0.010, 0.100 ppm) of dichlorvos, which is an orgonophosphores insecticide, on the egg- hatchability of Pimpla turionellae L. was investigated. All of the dichlorvos concentrations which were examined had a negative effect on the egg-hatchability and also considerably decreased the egg hatchability percentage. The most important change on the egg-openings was observed on the eggs which were kept at 0.100 ppm dichlorvos concentrations. Egg-opening percentage dropped at 0.001 and 0.010 ppm dichlorvos concentrations but no statistical difference was observed in terms of egg-hatchability effects for 0.001 and 0.010 ppm dichlorvos concentrations except for the 19th, 25th and 31st days.