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Olfactory preference of the litchi fruit borer for oviposition on two litchi varieties

文献类型： 外文期刊

作者： Lin, Xian-yu 1 ; Zheng, Yuan 1 ; Shen, Ying 1 ; Li, Dun-Song 1 ;

作者机构： 1.Guangdong Acad Agr Sci, Key Lab Green Prevent & Control Fruits & Vegetable, Guangdong Prov Key Lab High Technol Plant Protect, Inst Plant Protect,Minist Agr & Rural Affairs, Guangzhou 510640, Peoples R China; Guangdong Acad Agr Sci, Key Lab Green Prevent & Control Fruits & Vegetabl, Guangdong Prov Key Lab High Technol Plant Protect, Inst Plant Protect,South China Minist Agr & Rural, Guangzhou 510640, Peoples R China

关键词： Conopomorpha sinensis Bradley; oviposition preference; olfactory; litchi variety; volatile

期刊名称：PEST MANAGEMENT SCIENCE （ 影响因子：4.1； 五年影响因子：4.4 ）

ISSN： 1526-498X

年卷期： 2024 年

页码：

收录情况： SCI

摘要： BACKGROUND The litchi fruit borer Conopomorpha sinensis Bradley is a major destructive pest of litchi and longan plants in China, India and South East Asia. Given its strong olfactory-based oviposition behaviour, interfering with the chemical communication between this insect pest and its host plant may serve as a potential control strategy. However, the chemical compounds associated with its egg-laying behaviour remain poorly understood. RESULTS In this study, we investigated the olfactory preference of female C. sinensis for oviposition on intact mature fruits of the Feizixiao (FZX) and Guiwei (GW) varieties. Results showed that female C. sinensis preferred to lay eggs on FZX compared with GW fruits, and this preference was olfactory-induced. In addition, we identified differences in the chemical composition of the volatile blend and proportions between FZX and GW fruits, with terpenes being the main volatile components contributing to this divergence. Compounds that induced electrophysiological activity in female borers were subsequently screened from FZX. d-Limonene exhibited the strongest oviposition attraction among four candidates. Furthermore, this compound served as a volatile olfactory cue for recognition and orientation in female C. sinensis. CONCLUSION The results of this study provide a deeper understanding of the olfactory preferences of female C. sinensis for oviposition on specific litchi varieties. (c) 2024 Society of Chemical Industry.

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