摘要
The tea geometridEctropis obliquais one of the most serious leaf-feeding insect pests in tea （Camelia sinensis） in East Asia. Although several volatile chemicals emitted from tea plants have been reported to be attractive toE. obliqua moths, no synthetic attractants for E. obliqua moths have been developed. By measuring the behavioral responses of the moth to a series of chemicals in the lab, we found that a blend containing a ternary mixture containing （Z）-3-hexenal, （Z）-3-hexenyl hexanoate and benzyl alcohol clearly attracted toE. obliqua moths of both sex and that （Z）-3-hexenyl acetate could enhance the attractiveness of the ternary blend. Moreover, we found that the volatiles emitted from the plant-E. obliqua larva com-plex have the same attractiveness as： 1） the blend of volatiles containing the ternary mixture and 2） the blend containing （Z）-3-hexenyl acetate plus the ternary mixture to both male and female moths. In a ifeld bioassay, more male moths were observed on traps that were baited with the blend containing （Z）-3-hexenyl acetate plus the ternary mixture than on control traps. Our study raises the tantalizing possibility that synthetic blends could be deployed as attractants for pests in the ifeld.
The tea geometridEctropis obliquais one of the most serious leaf-feeding insect pests in tea （Camelia sinensis） in East Asia. Although several volatile chemicals emitted from tea plants have been reported to be attractive toE. obliqua moths, no synthetic attractants for E. obliqua moths have been developed. By measuring the behavioral responses of the moth to a series of chemicals in the lab, we found that a blend containing a ternary mixture containing （Z）-3-hexenal, （Z）-3-hexenyl hexanoate and benzyl alcohol clearly attracted toE. obliqua moths of both sex and that （Z）-3-hexenyl acetate could enhance the attractiveness of the ternary blend. Moreover, we found that the volatiles emitted from the plant-E. obliqua larva com-plex have the same attractiveness as： 1） the blend of volatiles containing the ternary mixture and 2） the blend containing （Z）-3-hexenyl acetate plus the ternary mixture to both male and female moths. In a ifeld bioassay, more male moths were observed on traps that were baited with the blend containing （Z）-3-hexenyl acetate plus the ternary mixture than on control traps. Our study raises the tantalizing possibility that synthetic blends could be deployed as attractants for pests in the ifeld.
基金
sponsored by the Special Fund for Agro-scientific Research in the Public Interest, China (201403030)
the National Basic Research Program of China (2012CB114104)
the National Natural Science Foundation of China (31272053)
the Division of Science and Technology of Zhejiang Province, China (2015C32081)
