Effects of Novaluron on Trichogramma platneri Nagarkatti (Hymenoptera: Trichogrammatidae), a parasitoid of codling moth (Lepidoptera: Tortricidae)

The effects of insect growth regulator, novaluron, on adult toxicity of natural enemies have been noted to be less than those of broad spectrum insecticides. In this study, Trichogramma platneri adults were exposed to novlauron by three different methods to determine any sub-lethal effects. The three exposure methods of adults include, eggs laid by treated codling moth adults, codling moth eggs laid on surfaces treated with novaluron, and T. platneri adults treated with novaluron. Adult T. platneri will be exposed to novaluron by contact for 24 h and then given untreated codling moth eggs. Wasps will be incubated with eggs for 24 h and then removed. Parasitized eggs will be further incubated for 7 d to allow for adult emergence. Data collected from these experiments will include the number of eggs parasitized and the number of hatched eggs.