叉角厉蝽成虫对草地贪夜蛾幼虫的捕食作用研究  

Predation Effects of Eocanthecona furcellata Adults Against Spodoptera frugiperda Larvae

作　　者：潘应拿 姚明勇[1] 付迪 郭峰 覃韧 姜霖 陈文龙[1] PAN Yingna;YAO Mingyong;FU Di;GUO Feng;QIN Ren;JIANG Lin;CHEN Wenlong(Institute of Entomology,Provincial Key Laboratory for Agricultural Pest Management of Mountainous Region,Guizhou University,Guiyang,Guizhou 550025,China)

机构地区：[1]贵州大学昆虫研究所,贵州省山地农业病虫害重点实验室,贵州贵阳550025

出　　处：《山地农业生物学报》2020年第3期23-27,共5页Journal of Mountain Agriculture and Biology

基　　金：中国烟草总公司贵州省公司科技专项(201312)。

摘　　要：叉角厉蝽是一种多食性的优势天敌,为系统评估叉角厉蝽对草地贪夜蛾的捕食能力,在室内条件下测试了叉角厉蝽雌、雄成虫对草地贪夜蛾3、4和5龄幼虫的捕食功能反应和种内干扰反应。结果表明:叉角厉蝽雌、雄成虫对草地贪夜蛾3、4和5龄的捕食功能反应均符合HollingⅡ方程,雌成虫对草地贪夜蛾3、4和5龄捕食功能反应方程分别为Na=1.1592N/(1+0.0194N),Na=0.61065N/(1+0.0124N),Na=0.7757N/(1+0.0529N);雄成虫对草地贪夜蛾3、4和5龄捕食功能反应方程分别为Na=0.9082N/(1+0.01771N),Na=0.4657N/(1+0.01304N),Na=0.93188N/(1+0.1765N)。叉角厉蝽雌、雄成虫对草地贪夜蛾龄幼虫的寻找效应随着猎物密度的增加而下降。叉角厉蝽雌成虫对草地贪夜蛾的捕食作用率随着自身密度的增加而降低,其关系为E=0.3982P-0.3409。Eocanthecona furcellata is an omnivorous natural enemy. In order to systematically evaluate the predation ability of E. furcellata against Spodoptera frugiperda, predatory functional responses and intraspecific interference responses of female and male adults of E. furcellata on 3rd, 4th and 5th instar larvae of S. frugiperda were tested in the laboratory. The result showed that the response of female and male adults of E.furcellata to the predatory function of the 3rd, 4th and 5th instars of S. frugiperda were fitted with HollingⅡequation. The predatory functional response equations of female E. furcellata to the predatory function of the 3rd, 4th and 5th instars of S. frugiperda were Na=1.1592 n/(1+0.0194 n), Na=0.61065 n/(1+0.0124 n), Na=0.7757 n/(1+0.0529 n). The predatory functional response equations of male E. furcellata to the predatory function of the 3rd, 4th and 5th instars of S. frugiperda were Na=0.9082N/(1+0.01771N),Na=0.4657N/(1+0.01304N),Na=0.93188N/(1+0.1765N). The search effect of female and male adults of E. furcellata on the larva of S. frugiperda decreased with the increasing of prey density. The predation rate of female adults of E. furcellata on the larva of S. frugiperda decreased with the increasing of density of S. frugiperda, and the relationship was E=0.3982P-0.3409.

关 键 词：叉角历蝽 草地贪夜蛾 捕食作用 搜寻效应 

分 类 号：S433.4[农业科学—农业昆虫与害虫防治]