Author:

Keywords:

tebufenozide, cydia pomonella, ultrastructure, premature moulting, oviposition, egg fertility, field efficacy, nonsteroidal ecdysteroid agonist, ecdysone agonist, mimic tebufenozide, spodoptera-exigua, cotton leafworm, cydia-pomonella, lepidoptera, tortricidae, methoxyfenozide, noctuidae, Science & Technology, Life Sciences & Biomedicine, Agriculture, Multidisciplinary, Agriculture, Cydia pomonella, NONSTEROIDAL ECDYSTEROID AGONIST, ECDYSONE AGONIST, MIMIC TEBUFENOZIDE, SPODOPTERA-EXIGUA, COTTON LEAFWORM, CYDIA-POMONELLA, LEPIDOPTERA, TORTRICIDAE, METHOXYFENOZIDE, NOCTUIDAE, 06 Biological Sciences, 07 Agricultural and Veterinary Sciences, Plant Biology & Botany, 30 Agricultural, veterinary and food sciences, 31 Biological sciences

Abstract:

The activity of the ecdysteroid agonist tebufenozide was evaluated on the codling moth, Cydia pomonella. Tebufenozide affected larval feeding and growth, showing clear symptoms of a double head capsule. Under the SEM and TEM, symptoms of precocious apolysis of the larval integument were observed. Although this process was accompanied with a great inhibition of locomotion, muscle attachment to the new cuticle seemed not to be affected confirming the primary mode of action of tebufenozide as ecdysteroid-like. In addition, tebufenozide exerted a sterilising action in female and male adults in the laboratory. Finally, the potency of tebufenozide was evaluated in an experimental orchard for commercial apple production in Belgium being, at least, as effective as difluberizuron.