捕食性昆虫的标记信息素研究进展

捕食性昆虫的标记信息素广泛存在于鞘翅目、脉翅目、双翅目、半翅目和蜱螨目捕食者中,介导捕食性昆虫的猎物搜索、产卵、同类相残和集团内捕食,改变猎物蚜虫的生活史,因而影响捕食者控制目标害虫的能力。标记信息素由幼虫、成虫或卵产生,来源于外分泌腺或消化道。目前已鉴定出几种瓢虫的标记信息素,均为烷烃混合物。捕食性昆虫对标记信息素的反应受标记信息素持效期、昆虫本身状况如产卵习惯、年龄、经历和性别及外部条件如猎物种群密度的影响。

Recent advances in marking pheromones in predatory insects and mites

Recent advances in marking pheromones (MPs) in predatory insects and mites were re- viewed. MPs have been widely documented in predators in Coleoptera, Neuroptera, Diptera, Hemiptera and Acarina. They mediate foraging, oviposition, cannibalism and intraguild predation in predators, change life history in aphids. As a result, MPs dramatically affect biological control. MPs are produced or stored in exocrine glands or digestive ducts in both larvae and adults, or may be directly secreted by eggs. Up to now, several MPs have been chemically identified. All of them are blends of alkanes. Sever- al factors, such as MPs' persistence, intrinsic (such as oviposition habit, age, experience or sex) and extrinsic factors (such as available preys), may affect the response of predators to MPs.