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首页> 美国卫生研究院文献>BioMed Research International >VOCs-Mediated Location of Olive Fly Larvae by the Braconid Parasitoid Psyttalia concolor: A Multivariate Comparison among VOC Bouquets from Three Olive Cultivars
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VOCs-Mediated Location of Olive Fly Larvae by the Braconid Parasitoid Psyttalia concolor: A Multivariate Comparison among VOC Bouquets from Three Olive Cultivars

机译：VOCs介导的果蝇拟寄生的Psyttalia concolor的橄榄蝇幼虫的位置：来自三个橄榄品种的VOC花束之间的多元比较

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摘要

Herbivorous activity induces plant indirect defenses, as the emission of herbivorous-induced plant volatiles (HIPVs), which could be used by parasitoids for host location. Psyttalia concolor is a larval pupal endoparasitoid, attacking a number of tephritid flies including B. oleae. In this research, we investigated the olfactory cues routing host location behavior of P. concolor towards B. oleae larvae infesting three different olive cultivars. VOCs from infested and healthy fruits were identified using GC-MS analyses. In two-choice behavioral assays, P. concolor females preferred infested olive cues, which also evoked ovipositional probing by female wasps. GC-MS analysis showed qualitative and quantitative differences among volatiles emitted by infested and healthy olives. Volatile emissions were peculiar for each cultivar analyzed. Two putative HIPVs were detected in infested fruits, regardless of the cultivar, the monoterpene (E)-β-ocimene, and the sesquiterpene (E-E)-α-farnesene. Our study adds basic knowledge to the behavioral ecology of P. concolor. From an applied point of view, the field application of the above-mentioned VOCs may help to enhance effectiveness of biological control programs and parasitoid mass-rearing techniques.
机译：草食活动会诱导植物间接防御，因为草食诱导的植物挥发物（HIPV）的排放可能被寄生虫用于寄主定位。彩叶军草是幼虫的p内寄生虫，侵袭包括油菜芽胞杆菌在内的许多类蝇科蝇。在这项研究中，我们调查了嗅球提示寄主体育对三个不同的橄榄品种侵染油菜幼虫的宿主定位行为。使用GC-MS分析鉴定出受侵染和健康水果的VOC。在两种选择的行为分析中，同色体育的雌性偏爱受侵染的橄榄色提示，这也引起雌性黄蜂产卵。 GC-MS分析显示，出没和健康的橄榄排放的挥发物在质量和数量上存在差异。所分析的每个品种的挥发性排放物都是独特的。无论哪个品种，单萜（E）-β-烯丙烯和倍半萜（E-E）-α-法呢烯，在受侵染的果实中均检测到两个推定的HIPV。我们的研究增加了基础知识的行为体育彩。从应用的角度来看，上述VOC的现场应用可能有助于增强生物防治计划和寄生性增养技术的有效性。

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