Plants after infestation emit specific volatiles, which can influence foraging behavior of insect predators of herbivores. This work aimed to evaluate the responses of the predatory species, Coccinella undecimpunctata L. (Coleoptera: Coccinellidae), adults to volatiles emitted from its cowpea aphid prey, Aphis craccivora (Koch.), and from Vicia faba plant to improve the efficiency of searching for its prey. An olfactometer bioassay was used for this investigation. The results revealed that both male and female of C. undecimpunctata significantly used olfactory cues from infested plant + aphids, but the mated females exhibited a complete response (47.50%). The mated male was attracted to aphids (30.0%) more than other tested predatory types, indicating the capacity to exploit volatiles induced by aphids. The results supported that C. undecimpunctata adult uses plant volatiles induced by A. craccivora infestation, which might act as reliable indicators to find its prey.

中文翻译：

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捕食性物种Unccimpunctata L.（鞘翅目：Coccinellidae）对它的猎物Aphis craccivora Koch的挥发物的反应。和野豌豆工厂

侵染后的植物会释放出特定的挥发物，这会影响草食性昆虫食肉动物的觅食行为。这项工作旨在评估捕食性物种un瓢虫（Coccinella undecimpunctata L.（鞘翅目：Coccinellidae）），成虫对其cow豆蚜虫，pre蚜（Koch。）和野豌豆（Vicia faba）植物释放的挥发物的反应，以提高搜索效率。为它的猎物。嗅觉仪生物测定法用于该研究。结果表明，十一倍体C. undecimpunctata的雄性和雌性均显着使用了被侵染的植物+蚜虫的嗅觉线索，但交配的雌性表现出完全的反应（47.50％）。交配的雄性被蚜虫吸引的比例（30.0％）高于其他测试的掠食性类型，这表明有能力利用由蚜虫诱导的挥发物。结果支持C。