选择合适的场所进行产卵对于昆虫繁衍后代、维持种群数量具有重要的意义。鉴于植物叶毛对捕食性昆虫产卵选择的潜在重要性，围绕植物叶毛介导的捕食性昆虫产卵选择的生存策略及识别机制这个科学问题，以烟粉虱重要天敌日本刀角瓢虫为研究对象，采用昆虫种群生态学、行为学、形态学、生理学和摩擦学的技术与方法，在生物学和生物物理学的层面，重点研究（1）瓢虫对不同叶毛密度植物叶片的产卵选择性，（2）瓢虫产卵选择的生存策略，（3）瓢虫产卵选择过程对产卵基质的识别机制。预期研究结果将阐明植物叶毛介导的日本刀角瓢虫产卵选择机制，验证附着力与选择性之间的关系，发展“选择性—生长表现”假说，丰富“植物—烟粉虱—天敌瓢虫”三级营养关系理论，为筛选合适的植物性产卵基质，筛选、设计合理的人工产卵基质以及制定天敌瓢虫扩繁和应用的技术与方法提供理论指导。

Oviposition site selection is very important for insects to survive and develop their offsprings. Leaf trichomes are probable affecting the oviposition preference of Serangium japonicum, one of the most important predator of Bemisia tabaci in China. To make sure the effects of leaf trichomes density on the oviposition preference in S. japonicum, we will first test the choice of S. japonicum to different plant leaves having various leaf trichome densities. In order to better understanding the mechanisms of leaf trichome on oviposition preference of S. japonicum. We therefore will investigate the effect of leaf trichome on the attachment ability of the female adult of S. japonicum, to disclose the influence of attachment force on oviposition selection. We will also test the “preference-performance hypothesis” by evaluating the relationship between host plant choice and adult and offspring performance. At last we will explore the behavior and ultrastructure of organs used by females in evaluating the suitability of leaves for oviposition, and explore the electrophysiologic response of S. japonicum to mechanosensory stimulation. The completion of this project will not only test the relationship between attachment ability and oviposition preference, put new insights into the theories related to the “preference-preformation” hypothesis and the tritrophic interactions of “plant-whitefly-predatory ladybird”, but also provide theoretical guidance for screening and designing suitable ovipoisiton substrate used in predatory ladybird mass rearing, and for releasing predatory ladybird in biological control.