【摘要】 桑天牛长尾啮小蜂(Aprostocetus fukutai)是桑天牛(Apriona germari)卵期寄生蜂,研究其寄生机制对桑天牛的生物防治有重要意义。该寄生蜂的产卵行为主要包括桑天牛刻槽的定向搜寻、刻槽表面的检验、寄主卵检验、产卵寄生、标记等,其中刻槽表面检验的时间较长。选择试验显示,正常刻槽产卵桑枝对寄生蜂的引诱作用明显高于正常桑枝和取食桑枝。在刻槽未产卵桑枝、刻槽产卵未涂抹分泌物桑枝和正常刻槽产卵桑枝中,正常刻槽产卵桑枝对寄生蜂的引诱作用最强,并且刻槽检验时间、寄主卵检验率和寄生率等都显著高于前两个处理。已寄生刻槽对长尾啮小蜂的引诱作用明显低于未寄生刻槽。更多还原

【Abstract】 The Aprostocetus fukutai is an egg parasitoid of Apriona germari,so it is important to research the parasitizing mechanism of Aprostocetus fukutai for biological control of Apriona germari.The oviposition behav- ior of Aprostocetus fukutai consisted of following main steps:host-unit location,host-unit probing,host-egg probing,oviposition,and marking et al.The wasp invested more time in probing host-unit than in other behav- ior events.The data showed that the twig with healthy host-unit was more attractive to parasitoid than healthy or feeding-damaged twig in choice test.The attractiveness of the twig with healthy host-unit was strongest a- mong the three treatments of twigs(twig grooved only,grooved twig with host-egg,grooved twig with host- egg and secretion).Moreover,the host-unit probing time,host-egg probing rate,and host-egg parasitization rate of the twig with healthy host-unit were more than other two treatments of twigs.The attractiveness of the parasitized host-unit to A.fukutai was significantly lower than the unparasitized one.更多还原