Influence of some insect growth inhibitors and regulators igi and igr on the fertility of the codling moth cydia pomonella l. and the wine moth lobesia botrana den. and schiff
Charmillot, P.J.; Pasquier, D.; Benz, M.
Mitteilungen der Schweizerischen Entomologischen Gesellschaft 63(3-4): 359-366
Fecundity and longevity of the codling moth C. pomonella were not affected by the treatment of adults with 1 ml CGA 184699, an IGI. However, fertility was strongly reduced since induced ovicidal efficiency reached 48% after treatment at the concentration of 100 ppm and 91% with 200 ppm. When adults were for 2 days submitted to the contact with a surface previously treated at different concentrations of CGA 184 699, the induced ovicidal efficiency rose from 12% with 50 ppm to more than 80% with 100 ppm and higher concentrations. Similar results were obtained with 3 other IGI: diflubenzuron, teflubenzuron and flufenoxuron. With fenoxycarb, an IGR, a 2-days contact of the adults with a surface treated at 100 ppm induced 100% ovicidal efficiency. However, a 2-days contact with a surface previously treated at 100 ppm with the same IGI under IGR practically did not affect the fertility of the wine moth L. botrana.