体重与寄主植物对棉铃虫同类相残行为的影响  

The effect of body weight and host plant on cannibalism in cotton bollworm,Helicoverpa armigera

作　　者：李哲[1] 李典谟[1] 龚治[1] 谢宝瑜[1] 

机构地区：[1]中国科学院动物研究所农业虫害鼠害综合治理国家重点实验室

出　　处：《昆虫知识》2006年第5期617-620,共4页Entomological Knowledge

基　　金：国家自然科学基金资助项目(30571226;30270858)。

摘　　要：对棉铃虫Helicoverpa armigera(Hübner)的同类相残进行行为学观测,以分析体重在胜负中作用,以及不同寄主植物情况下,同类相残导致的数量变化。结果表明:棉铃虫同类相残包括试探性攻击、反击、追击、嘶咬、缠绕、取食等过程,其中能否成功缠绕对方是成功的关键。体重在同类相残过程中起到重要的作用,同一龄期,体重大的个体获胜可能性显著大于体重较小的个体。寄主植物的营养状况对同类相残有着显著影响,不适宜寄主植物环境下,同类相残在低龄期即可降低种群数量。The cannibalistic behavior of cotton bollworm, Helicoverpa armigera （ Hübner）, was observed, and the effect of body weight and host plant on cannibalism was studied. The result shows that cannibalistic behavior includes tentative attack （bite）, counterattack, chase, wrap and eating, among which wrap is the key step to win. At the same age,the individual with greater weight has more chance to win. Host plant plays an important role in population dynamics under cannibalistic environment. The survival rate of early instar larvae of H. armigera significantly decreases when unsuitable food is provided.

关 键 词：同类相残 棉铃虫 体重 寄主植物 

分 类 号：S433[农业科学—农业昆虫与害虫防治]