Selection of Effective Species of Trichogramma Egg Parasitoids of Diamondback Moth: Ⅲ.Parasitizing Ability Assessment of Three Trichogramma Species on Nontarget Lepidoptera in Crucifer
In order to assess the effect of Trichogramma released for controlling the diamondback moth on nontarget Lepidoptera in cruciferous field, functional response of three Trichogramma species to eggs of Pieris rapae, Spodoptera exigua and S. litura was carried out in the laboratory. The results showed that T. confusum and T. pretiosum could parasitize the egg of P. rapae but could not develop successfully. T. confusum, T. pretiosum and T. bilingensis could parasitize the egg of S. exigua, but T. bilingensis ...