异色瓢虫对草地贪夜蛾和禾谷缢管蚜的捕食功能反应及捕食选择性研究  

Prey selectivity and predatory functional response of Harmonia axyridis to Spodoptera frugiperda and Rhopalosiphum padi

作　　者：周丽君[1,2] 杨灯海 胡其磊 石凌志 操海群[1,2] 李桂亭[1,2] 蒋兴川[1,2,3] ZHOU Lijun;YANG Denghai;HU Qilei;SHI Lingzhi;CAO Haiqun;LI Guiting;JIANG Xingchuan(Anhui Provincial Key Laboratory for Integrated Management of Crop Pests,Anhui Agricultural University,Hefei230036,China;Key Laboratory of Biology and Sustainable Management of Plant Diseases and Pests of Anhui Higher Education Institutes,Anhui Agricultural University,Hefei230036,China;Institute of Plant Protection,Chinese Academy of Agricultural Sciences,State Key Laboratory for Biology of Plant Diseases and Insect Pests,Beijing100193,China)

机构地区：[1]作物有害生物综合治理安徽省重点实验室,安徽农业大学,合肥230036 [2]植物病虫害生物学与绿色防控安徽普通高校重点实验室,安徽农业大学,合肥230036 [3]中国农业科学院植物保护研究所,植物病虫害生物学国家重点实验室,北京100193

出　　处：《植物保护》2022年第2期111-117,共7页Plant Protection

基　　金：安徽省科技重大专项(201903a06020027);国家自然科学基金(31801806);植物病虫害生物学国家重点实验室开放课题(SKLOF202101);安徽农业大学大学生创新创业项目(202110364595)。

摘　　要：为探究入侵害虫草地贪夜蛾Spodoptera frugiperda与本地害虫禾谷缢管蚜Rhopalosiphum padi同时存在时,异色瓢虫Harmonia axyridis对入侵害虫草地贪夜蛾的防控效果,本研究开展了异色瓢虫成虫及4龄幼虫对草地贪夜蛾2龄幼虫、禾谷缢管蚜2龄若虫的捕食功能反应、搜寻效应、捕食选择性试验。结果表明,异色瓢虫对草地贪夜蛾、禾谷缢管蚜的捕食功能反应均符合HollingⅡ模型方程,其日捕食量随物密度的增加而增加,搜寻效应均随猎物密度的增加而逐渐降低;异色瓢虫成虫对草地贪夜蛾2龄幼虫、禾谷缢管蚜2龄若虫的控害效能分别为221.88头和343.01头,其4龄幼虫对草地贪夜蛾2龄幼虫、禾谷缢管蚜2龄若虫的控害效能分别为140.88头和210.93头。异色瓢虫对草地贪夜蛾和禾谷缢管蚜具有较好的控害能力,其成虫对两种害虫的防控效果优于其4龄幼虫,且异色瓢虫对禾谷缢管蚜的捕食选择性强于草地贪夜蛾。In order to investigate the control ability of Harmonia axyridis against the invasive pest Spodoptera frugiperda coexisting with the local pest Rhopalosiphum padi,the functional response,searching efficiency and prey selectivity of adults and the 4th-instar larvae of H.axyridis to both 2nd-instar larvae of S.frugiperda and 2nd-instar nymphs of R.padi were studied.The results showed that the predatory functional responses of H.axyridis to both S.frugiperda and R.padi accorded with the HollingⅡmodel,and the daily predation capacity increased gradually with increasing prey density,and the searching efficiency decreased with increasing prey density.The predation capacities of H.axyridis adults against the 2nd-instar larvae of S.frugiperda and the 2nd-instar nymphs of R.padi were 221.88 and 343.01,respectively,and those of the 4th-instar larvae of H.axyridis against the 2nd-instar larvae of S.frugiperda and the 2nd-instar nymphs of R.padi were 140.88 and 210.93,respectively.This study confirmed that H.axyrids was a good biocontrol agent against S.frugiperda and R.padi;the control effect of adults on the two pests was better than that of the 4th-instar larvae,and the predation selectivity of H.axyrids for R.padi was stronger than for S.frugiperda.

关 键 词：异色瓢虫 草地贪夜蛾 禾谷缢管蚜 捕食功能反应 捕食选择性 

分 类 号：S476.2[农业科学—农业昆虫与害虫防治]