Ling Jing, Li Yuan, Zheng Xia-Lin, Lu Wen, Wang Xiao-Yun
Guangxi Key Laboratory of Agric-Environment and Agric-Products Safety, College of Agriculture, Guangxi University, Nanning 530004, China.
J Econ Entomol. 2024 Dec 28;117(6):2400-2412. doi: 10.1093/jee/toae225.
Fruit volatiles play a crucial role in the host localization by the oriental fruit fly, Bactrocera dorsalis Hendel (Diptera: Tephritidae). This study focused on identifying the fruit volatiles from Sanyue plum and Sanhua plum (Prunus salicina Lindl.), which are 2 varieties of the same species, and examined their impact on the behavior of B. dorsalis by using a Y-olfactometer. A total of 35 and 54 volatiles from Sanyue plum and Sanhua plum were identified, respectively. Among these, 23 volatiles elicited electroantennographic (EAG) responses by B. dorsalis adults, showing concentration-dependent effects in males and females. Ethyl butyrate, butyl acetate, butyl hexanoate, ethyl caproate, ethyl hexanoate, and hexyl acetate significantly attracted B. dorsalis compared to liquid paraffin, while nonaldehyde was avoided. There was no significant difference in the behavioral responses of both sexes to sorbitol esters, hexyl isobutyrate, and 1-tetradecene compared with the control liquid paraffin group. Interestingly, (3Z)-C-3-hexenyl acetate significantly attracted females, but not males. The above findings suggest that plum fruit volatiles are likely to facilitate the localization of host fruit by B. dorsalis adults and may even aid in mate-finding. This study opens up new avenues for exploring novel plant-based attractants that might be of value for the integrated management of B. dorsalis.
水果挥发物在橘小实蝇[Bactrocera dorsalis Hendel（双翅目：实蝇科）]对寄主的定位过程中起着至关重要的作用。本研究聚焦于鉴定同一物种的两个品种——三月李和三华李（Prunus salicina Lindl.）的水果挥发物，并通过Y型嗅觉仪研究它们对橘小实蝇行为的影响。分别从三月李和三华李中鉴定出了35种和54种挥发物。其中，23种挥发物引发了橘小实蝇成虫的触角电位（EAG）反应，对雄性和雌性均表现出浓度依赖性效应。与液体石蜡相比，丁酸乙酯、乙酸丁酯、己酸丁酯、己酸乙酯、己酸己酯和乙酸己酯对橘小实蝇有显著吸引作用，而壬醛则被排斥。与对照液体石蜡组相比，两性对山梨醇酯、异丁酸己酯和1-十四碳烯的行为反应没有显著差异。有趣的是，（3Z）-乙酸叶醇酯对雌性有显著吸引作用，但对雄性没有。上述研究结果表明，李属果实挥发物可能有助于橘小实蝇成虫对寄主果实的定位，甚至可能有助于其寻找配偶。本研究为探索新型植物源引诱剂开辟了新途径，这些引诱剂可能对橘小实蝇的综合防治具有重要价值。
