Abstract：
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.
CONCLUSIONS: The results of this study provide a deeper understanding of the olfactory preferences of female C. sinensis for oviposition on specific litchi varieties. © 2024 Society of Chemical Industry.
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.
CONCLUSIONS: The results of this study provide a deeper understanding of the olfactory preferences of female C. sinensis for oviposition on specific litchi varieties. © 2024 Society of Chemical Industry.
摘要：
背景：荔枝果bore是中国荔枝和龙眼植物的主要破坏性害虫，印度和东南亚。鉴于其强烈的嗅觉产卵行为，干扰这种害虫与其寄主植物之间的化学通讯可能是一种潜在的控制策略。然而,与其产卵行为相关的化合物仍然知之甚少。
结果：在这项研究中，我们调查了雌性C.sinensis对Feizixiao（FZX）和Guiwei（GW）品种完整成熟果实产卵的嗅觉偏好。结果表明，与GW果实相比，雌性C.sinensis更喜欢在FZX上产卵，这种偏好是嗅觉诱发的。此外,我们确定了挥发性混合物的化学成分和FZX和GW水果之间的比例差异，萜烯是导致这种差异的主要挥发性成分。随后从FZX中筛选出在雌性蛀虫中诱导电生理活性的化合物。d-柠檬烯在四个候选人中表现出最强的产卵吸引力。此外，该化合物可作为挥发性嗅觉线索，用于识别和定向雌性中华。
结论：这项研究的结果提供了更深入的了解雌性中国菜对特定荔枝品种产卵的嗅觉偏好。©2024化学工业学会。
结果：在这项研究中，我们调查了雌性C.sinensis对Feizixiao（FZX）和Guiwei（GW）品种完整成熟果实产卵的嗅觉偏好。结果表明，与GW果实相比，雌性C.sinensis更喜欢在FZX上产卵，这种偏好是嗅觉诱发的。此外,我们确定了挥发性混合物的化学成分和FZX和GW水果之间的比例差异，萜烯是导致这种差异的主要挥发性成分。随后从FZX中筛选出在雌性蛀虫中诱导电生理活性的化合物。d-柠檬烯在四个候选人中表现出最强的产卵吸引力。此外，该化合物可作为挥发性嗅觉线索，用于识别和定向雌性中华。
结论：这项研究的结果提供了更深入的了解雌性中国菜对特定荔枝品种产卵的嗅觉偏好。©2024化学工业学会。
