莲草直胸跳甲成虫产卵选择性及叶位与幼虫发育适合度的关系  

Oviposition Preference and Larval Performance of Agasicles hygrophila on the Leaves of Alternanthera philoxeroides

作　　者：陈磊[1,2] 蔡笃程[2] 陈青[1] 唐超[1] 彭正强[1] 金启安[1] 温海波[1] 

机构地区：[1]农中业国部热热带带农农林业有害科生学物院入侵环监境测与与控植制物重保点开护放研实究验室所,海南儋州571737 [2]海南大学环境与植物保护学院,海南儋州571737

出　　处：《热带作物学报》2009年第3期353-356,共4页Chinese Journal of Tropical Crops

基　　金：973资助项目(No2009CB119200);国家科技支撑项目(No2006BAD08A18)资助

摘　　要：采用室内自由选择法和发育测定法研究莲草直胸跳甲(Agasicles hygrophila)成虫对喜旱莲子草(Alternanthera philoxeroides)叶位的产卵选择性及后代发育与不同叶位叶片的适合度。结果表明:(1)莲草直胸跳甲成虫嗜好在中部叶片的叶背产卵,以在第2对叶上的选择系数最高,选择率为35.18%,与第1对叶上的28.03%差异不显著,但显著高于对其他叶位的选择系数;(2)相对于在叶表进行取食,初孵幼虫显著趋向在叶背,且这样取食的1龄幼虫存活率高、发育历期显著缩短,这与雌虫选择在叶背产卵的习性相符,说明其选择有一定生物学意义,即有利于后代发育;(3)叶龄对莲草直胸跳甲各龄幼虫发育有显著影响,叶位越低,各龄幼虫的发育历期越长,但存活率上以取食第1叶位的为最高。The oviposition preference of Agasicles hygrophila for leaf position of host plant alligatorweed (Alternanthera philoxeroides) and larval performance on the leaves in terms of duration and survivorship were observed in this experiment. The adult female beetle preferred to oviposit on the undersides of leaves in the middle layers of the leaves of alligatorweed, with the second pair of the leaves having the highest preference index (35.18%) among the leaves. The preference index for the first pair of leaves w...

关 键 词：莲草直胸跳甲 叶位 产卵选择 适合度 

分 类 号：S433.5[农业科学—农业昆虫与害虫防治]