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Association between olfactory sensitivity and behavioral responses of Drosophila suzukii to naturally occurring volatile compounds.
Archives of Insect Biochemistry and Physiology ( IF 2.2 ) Pub Date : 2020-03-19 , DOI: 10.1002/arch.21669
Giulia Corda 1 , Paolo Solari 1 , Maria Antonietta Dettori 2 , Davide Fabbri 2 , Giovanna Delogu 2 , Roberto Crnjar 1 , Giorgia Sollai 1
Affiliation  

Drosophila suzukii Matsumura (Diptera: Drosophilidae) is an invasive, destructive crop pest that originated in South East Asia. D. suzukii recently invaded Western countries and is threatening both European and American fruit industries. It is extremely attracted to otherwise undamaged, ripening fruits, unlike most other Drosophila species that attack only decaying or rotten fruits. Recent studies on different insect species showed that several naturally occurring compounds of easy market availability showing deterrent action may be used to supplement mass catches with food traps. Based on these considerations, the aim of the present work was to test the effects of some natural compounds (alone or in the mixture) on the olfactory system of the D. suzukii and the behavioral responses evoked. We measured by electroantennogram (EAG) recordings, the olfactory sensitivity of antennae to increasing concentrations of eugenol, vanillin, menthol, cis‐jasmone; eugenol + vanillin, +menthol, +cis‐jasmone; vanillin + menthol, +cis‐jasmone. In addition, the behavioral responses to the same compounds and mixtures were evaluated. Our electrophysiological results show a dose‐response relationship between the EAG amplitudes and the increasing concentrations of the olfactory compound. The behavioral results show that the number of laid eggs is significantly different between the standard diet and the standard diet + natural compound. These results underline a specificity in the olfactory sensitivity and in the ovipositing behavior of D. suzukii females; also, they could be valuable for the identification of key chemicals aimed at the future development of strategies in the management and control of this harmful insect for crops.

中文翻译:

嗅觉敏感性和铃木果蝇对天然挥发性化合物的行为响应之间的关联。

铃木果蝇Drosophila suzukii Matsumura)(双翅目:Drosophilidae)是一种入侵性,破坏性作物害虫,起源于东南亚。铃木D.最近入侵了西方国家,并威胁到欧美水果产业。与其他大多数果蝇只攻击腐烂或腐烂的果蝇不同,它极易吸引原本未损坏的成熟果实。最近对不同昆虫种类的研究表明,几种具有市场可利用性的天然化合物显示出威慑作用,可以用来补充诱捕器。基于这些考虑,本研究的目的是测试某些天然化合物(单独或以混合物形式)对铃木D.嗅觉系统的影响并引起了行为反应。我们通过心电图(EAG)记录来测量触角对丁香酚,香兰素,薄荷醇,顺式茉莉酮的浓度的嗅觉敏感性。丁子香酚+香兰素+薄荷醇+顺式茉莉酮; 香兰素+薄荷醇+顺式茉莉 此外,评估了对相同化合物和混合物的行为反应。我们的电生理结果表明,EAG振幅与嗅觉化合物浓度的增加之间存在剂量反应关系。行为结果表明,标准饮食和标准饮食+天然化合物之间的产卵数显着不同。这些结果强调了铃木D.女性嗅觉敏感性和产卵行为的特异性。同样,它们对于鉴定旨在针对该农作物有害昆虫的管理和控制策略的未来发展的关键化学物质也可能是有价值的。
更新日期:2020-03-19
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