Trapping Synergism of E8, E10-12:OH with Sex Pheromone of Grapholita molesta (Busck) (Lepidoptera: Tortricidae)

doi:10.16409/j.cnki.2095-039x.2022.03.032

Abstract

Abstract: The aim of this paper was to clarify the synergistic effect of different doses of E8, E10-12:OH that is the main component of sex pheromone of Cydia pomonella on the sex pheromone of Grapholita molesta, and to provide a reference for biological control and monitoring of G. molesta. Field trapping experiments and electroantennogram (EAG) were used to explore the effect of lures, which contained different dosages of E8, E10-12:OH mixing with the sex pheromone of G. molesta, on trapping efficiency of G. molesta in the field and on the EAG responses of male G. molesta. Field experiment showed that all five doses of E8, E10-12:OH used alone had a capability to trap male G. molesta and had no significant difference in trapping number of male G. molesta. Trapping efficiency of five doses of E8, E10-12:OH mixing with G. molesta sex pheromone were higher than it. The number of G. molesta captured by adding 20 μg of E8, E10-12:OH to the sex pheromone of G. molesta was 2.86 times higher than it. Both E8, E10-12:OH and G. molesta sex pheromone could elicit the EAG responses of male G. molesta, of which the intensity was positively related with the concentration of tested compounds. E8, E10-12:OH could be used as attractant or synergist of the sex pheromone of G. molesta to improve its trapping efficiency and enhance the accuracy of monitoring the population dynamics of G. molesta.

Key words: E8, E10-12:OH, Grapholita molesta, synergistic effect, sex pheromone, Cydia pomonella

CLC Number:

S476

ZHU Mengya, XIANG Huiming, LI Xianwei, WU Dongsheng, WU Hongjian, MA Ruiyan. Trapping Synergism of E8, E10-12:OH with Sex Pheromone of Grapholita molesta (Busck) (Lepidoptera: Tortricidae)[J]. Chinese Journal of Biological Control, 2023, 39(3): 560-566.

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