环斑猛猎蝽对草地贪夜蛾低龄幼虫的捕食功能分析  

Predation function analysis of Sphedanolestes impressicollis to young larvae of Spodoptera frugiperda

作　　者：胡宗伟 冯万祖 张浩然 曾曼 陈黔 李建平 吴雨欣 于永浩[2] 夏鹏亮 张建民[1] HU Zong-Wei;FENG Wang-Zu;ZHANG Hao-Ran;ZENG Man;CHEN Qian;LI Jian-Ping;WU Yu-Xin;YU Yong-Hao;XIA Peng-Liang;ZHANG Jian-Min(College of Agriculture,Yangtze University,Jingzhou 434000,Hubei Province,China;Key Laboratory for Biology of Crop Diseases and Insect Pests in Guangxi Province,Research Institute of Plant Protection,Guangxi Academy of Agricultural Sciences,Nanning 530007,China;Enshi Tobacco Company in Hubei Province,Enshi 445000,Hubei Province,China)

机构地区：[1]长江大学农学院,湖北荆州434000 [2]广西农业科学院植物保护研究所,广西作物病虫害生物学重点实验室,南宁530007 [3]湖北省烟草公司恩施州公司,湖北恩施445000

出　　处：《环境昆虫学报》2022年第3期530-537,共8页Journal of Environmental Entomology

基　　金：广西作物病虫害生物学重点实验室(2020Z20027);中国烟草总公司湖北省公司重点科技项目(027Y2020-003);中国烟草总公司2019年重大专项项目[110201901038(LS-01)];湖北省烟草公司2018年科技项目(027Y2018-025)。

摘　　要：为探究环斑猛猎蝽Sphedanolestes impressicollis Stal对草地贪夜蛾Spodoptera frugiperda Smith的捕食潜能,在室内条件下研究了环斑猛猎蝽4龄若虫对草地贪夜蛾1~3龄幼虫的捕食功能、搜寻效应以及环斑猛猎蝽自身密度对捕食草地贪夜蛾的干扰作用。结果表明:环斑猛猎蝽4龄若虫对草地贪夜蛾低龄幼虫的捕食功能反应符合Holling Ⅱ模型。环斑猛猎蝽4龄若虫对草地贪夜蛾1龄、2龄、3龄幼虫的瞬时攻击率分别为0.900、1.229和1.259,处理时间分别为0.018 d、0.050 d和0.205 d,日最大捕食量分别为55.897头、19.853头和4.871头。环斑猛猎蝽4龄若虫的搜寻效应与草地贪夜蛾密度呈负相关。环斑猛猎蝽4龄若虫对草地贪夜蛾低龄幼虫的捕食作用率随自身密度的增加而降低。在捕食草地贪夜蛾1龄幼虫时,环斑猛猎蝽4龄若虫自身密度对其捕食能力干扰最大。研究结果表明环斑猛猎蝽4龄若虫对草地贪夜蛾低龄幼虫有一定的捕食能力,为其田间应用释放技术提供了理论依据。In order to investigate the predation potential of Sphedanolestes impressicollis against the Spodoptera frugiperda,the predation function,searching effect and mutual interference effect of the 4^(th) instar nymphs of S.impressicollis on the 1^(st),2^(nd) and 3^(rd) instar larvae of S.frugiperda were studied under indoor conditions.The results showed that the predation function response of the 4^(th) instar nymphs of S.impressicollis to the young larvae of S.frugiperda conforms to the Holling Ⅱ model.The instantaneous attack rates of the 4^(th) instar nymphs of S.impressicollis against the 1^(st),2^(nd) and 3^(rd) instar larvae of S.frugiperda were 0.900,1.229 and 1.259,and the handling times was 0.018,0.050 and 0.205 d.The maximum daily predation amounts were 55.897,19.853 and 4.871,respectively.There was a negative correlation between the searching effect and the density of the S.frugiperda.The mutual interference effect of its own density on predation ratio on the young larvae of S.frugiperda decreased with increasing density of the predator.When preying on the 1^(st) instar larvae of S.frugiperda,the density of the 4^(th) instar nymphs of S.impressicollis was the most significant factor affecting the preying ability.The results indicated that the 4^(th) instar nymphs of S.impressicollis had a certain ability to prey on the young larvae of S.frugiperda,which provided a theoretical basis for the application of the release technology in the field.

关 键 词：环斑猛猎蝽 草地贪夜蛾 捕食功能 搜寻效应 干扰反应 

分 类 号：Q968.1[生物学—昆虫学] S476[农业科学—农业昆虫与害虫防治]