【摘要】 在实验室条件下，研究智利小植绥螨雌成螨对二斑叶螨不同螨态的捕食反应、捕食选择性，以及智利小植绥螨自身的捕食干扰反应，为智利小植绥螨的人工繁殖和田间利用提供理论依据。结果表明，智利小绥螨雌成螨对二斑叶螨卵、若螨和成螨的捕食功能反应均属于HollingⅡ型，智利小植绥螨雌成螨对二斑叶螨三种螨态的最大捕食量分别为333.33粒、45.45头和12.99头，其捕食能力随猎物螨态的增大而降低。智利小植绥螨对二斑叶螨的若螨表现出嗜食性，对卵和成螨没有嗜食性。在相同猎物密度下，智利小植绥螨对二斑叶螨的平均捕食量随着自身密度的增加而减小，存在种间干扰。更多还原

【Abstract】 The predatory functional response, predatory preference and auto-interference response of Phytoseiulus persimilis to different stages of Tetrarcychus urticae were examined under laboratory conditions, to determine the control potential of the predatory mite P. persimilis against T. urticae. The results showed that the functional response of the P. persimilis to T. urticae fitted well with the Holling II model. The predatory capacity of P. persimilis decreased with spider mite size. Predation was greatest on eggs, followed by nymphs and adults. The maximum predation capacity of female adult P. persimilis on the three stage of T. urticae were 333.33, 45.45 and 12.99, respectively. When the different stages of T.urticae coexist, P. persimilis preferred T. urticae nymphs to eggs and adults. At the same prey density, the predation rate of P. persimilis on the adults of T. urticae decreased with the increase of its own density, which indicated that the intraspecific interference effect existed in P. persimilis.更多还原