Hosseini Mojtaba, Hatami Buan, Saboori Alireza
Department of Entomology, College of Agriculture, Isfahan University of Technology, P.O. Box 84154, Isfahan, Iran.
Exp Appl Acarol. 2002;27(4):297-302. doi: 10.1023/a:1023359130396.
In this study aphid-plant association and its effect on host preference of parasitic Allothrombium pulvinum larvae was examined with multiple-choice tests. Host species selection, host size selection and superparasitism with mite larvae were studied with two-choice tests. Three aphid species were used: Macrosiphum rosae, Aphis gossypii and Hyalopterus amygdali. In multiple-choice tests, larvae of A. pulvinum showed no significant preference for any aphid-plant association when given M. rosae on rose, A. gossypii on cucumber and H. amygdali on apricot simultaneously. Two-choice tests showed that larval mites preferred H. amygdali to A. gossypii, but had no preference when offered a choice between A. gossypii and M. rosae or between H. amygdali and M. rosae. In host size selection and superparasitism tests, significantly more mites selected the larger host (M. rosae). Furthermore, parasitised H. amygdali were preferred to unparasitised ones.
在本研究中，通过多项选择试验研究了蚜虫与植物的关联及其对寄生性棉红恙螨幼虫宿主偏好的影响。通过双项选择试验研究了宿主物种选择、宿主大小选择以及螨幼虫的过寄生现象。使用了三种蚜虫：蔷薇长管蚜、棉蚜和桃粉大尾蚜。在多项选择试验中，当同时在玫瑰上提供蔷薇长管蚜、在黄瓜上提供棉蚜、在杏树上提供桃粉大尾蚜时，棉红恙螨幼虫对任何蚜虫 - 植物组合均无明显偏好。双项选择试验表明，螨幼虫更喜欢桃粉大尾蚜而非棉蚜，但在棉蚜与蔷薇长管蚜之间或桃粉大尾蚜与蔷薇长管蚜之间进行选择时没有偏好。在宿主大小选择和过寄生试验中，明显更多的螨选择了较大的宿主（蔷薇长管蚜）。此外，被寄生的桃粉大尾蚜比未被寄生的更受青睐。
