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How does a predator find its prey? Nesidiocoris tenuis is able to detect Tuta absoluta by HIPVs
Journal of Asia-Pacific Entomology ( IF 1.5 ) Pub Date : 2020-10-20 , DOI: 10.1016/j.aspen.2020.10.006
Mousa Abdollahipour , Yaghoub Fathipour , Afsaneh Mollahosseini

The Zoophytophagous predator, Nesidiocoris tenuis (Reuter) (Hemiptera: Miridae) is one of the most important candidates for controlling Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae) in tomato crops. This predator uses different signals including morphological plant traits, prey insects, and volatile substances produced by the infested plants and prey signals to find its suitable prey. These signals are different in each cultivar of a plant. We aimed to understand how N. tenuis finds its prey using volatiles from tomato plants damaged or infested with T. absoluta. The predator’s responses to various plant treatments on two cultivars of tomato plants were tested in a flight tunnel and a four-choice olfactometer. The volatile compounds released from the treatments were also collected and identified. The results of the olfactory experiments showed that the predators even in the absence of light chose the plants bearing their insect prey. This behavior was not the same in both cultivars, and N. tenuis had a tendency toward mechanically damaged of Early Urbana Y cultivar more than Cal JN3 cultivar. The differences in the amount of monoterpenes, sesquiterpenes, and eugenol between cultivars may play a role in the differential attraction of N. tenuis towards infested plants. The difference in the volatile compounds was evident in two cultivars, and this was consistent with our bioassay results. Therefore, the choice of appropriate cultivar and use of herbivore-infested plant volatiles are important for developing a control strategy against T. absoluta and attract its predators.



中文翻译:

捕食者如何找到猎物?Nesidiocoris tenuis能够通过HIPV检测到绝对的Tuta absoluta

该Zoophytophagous捕食者,Nesidiocoris链格孢菌(路透社)(半翅目:盲蝽科)是控制最重要的人选之一番茄斑潜蝇(蛾)(鳞翅目:麦蛾科)在番茄作物。该捕食者使用不同的信号,包括形态植物性状,猎物昆虫和受感染植物产生的挥发性物质,以及猎物信号来找到合适的猎物。这些信号在植物的每个品种中都不同。我们的目的是了解特奈猪笼草如何利用被绝对黑麦草侵害或侵染的番茄植物挥发物找到猎物。在飞行通道和四选择嗅觉计中测试了捕食者对两个番茄品种的各种植物处理的反应。还收集并鉴定了从处理中释放出的挥发性化合物。嗅觉实验的结果表明,即使在没有光照的情况下,捕食者也会选择带有昆虫猎物的植物。在两个品种中,这种行为都不相同,并且N. tenuis具有比Cal JN3品种更易受早期Urbana Y品种机械损伤的趋势。品种之间单萜,倍半萜烯和丁子香酚的含量差异可能在特异猪笼草的差异吸引中起作用对出没的植物。在两个品种中,挥发性化合物的差异很明显,这与我们的生物测定结果一致。因此,选择合适的品种和使用食草动物侵染的植物挥发物对于制定针对绝对黑麦草的控制策略并吸引其捕食者很重要。

更新日期:2020-10-30
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