普通大蓟马产卵选择性初探  

Preliminary Studies on Oviposition Preference of Bean Flower Thrips, Megalurothrips usitatus(Bagnall)

作　　者：谭珂[1] 李曼娟 陈鑫[1] 葛文龙[1] 但建国[1] 

机构地区：[1]海南大学环境与植物保护学院,海南海口570228

出　　处：《热带作物学报》2015年第3期587-590,共4页Chinese Journal of Tropical Crops

基　　金：中西部高校项目(No.MWECSP-RT08;ZXBJH-XK004和ZXBJH-XK005)

摘　　要：采用叶盘法对普通大蓟马的产卵选择性进行研究。二元选择性实验结果表明,该虫产卵时对豇豆嫩叶正面和反面的选择性没有差异,但喜欢在菜豆和花生嫩叶的正面产卵。以豇豆嫩叶反面、菜豆嫩叶正面和花生嫩叶正面供普通大蓟马产卵时,产卵选择性顺序为豇豆>菜豆=花生,近85%的卵产在豇豆嫩叶上。寄主植物叶表茸毛密度对普通大蓟马的产卵选择性有一定的影响。Oviposition preferences for three legume species by bean flower thrips, Megalurothrips usitatus （Bagnall）, were conducted with leaf discs in the laboratory. In dual-choice tests, the females showed no preference for laying their eggs on either adaxial surfaces or abaxial surfaces of young leaves of cowpea, Vigna unguiculata. Adaxial surfaces of young leaves, however, were preferred for oviposition by the thrips on common bean, Phaseolus vu/gar/s, and groundnut, Arachis hypogaea. When abaxial surfaces of young cowpea leaves and adaxial surfaces of young leaves of both common bean and groundnut were exposed to the females, they expressed clear oviposition preferences for particular legume species in the order cowpea leaves 〉common bean leaves =groundnut leaves, ovipositing approximately 85% of their eggs on young cowpea leaves. The density of trichomes on leaf surface of host plants had some impact on oviposition preference of the bean flower thrips.

关 键 词：普通大蓟马 产卵选择性 豇豆 菜豆 花生 茸毛密度 

分 类 号：S433[农业科学—农业昆虫与害虫防治]