微小花蝽对梨瘿蚊的室内捕食作用  

Predation of Orius minutes on Dasumeira pyri in the laboratory

作　　者：胡长效[1] 强承魁[1] 王胜永[1] HU Chang-xiao;QIANG Cheng-kui;WANG Sheng-yong(Garden Institute,Xuzhou Vocational College of Bioengineering,Xuzhou 221006,China)

机构地区：[1]徐州生物工程职业技术学院园林研究所

出　　处：《江苏农业学报》2020年第1期57-62,共6页Jiangsu Journal of Agricultural Sciences

基　　金：江苏省现代农业产业技术体系建设项目[JATS(2018)030];江苏省高校“青蓝工程”资助项目

摘　　要：为明确各虫态微小花蝽(Orius minutes L.)对梨瘿蚊(Dasumeira pyri Bouch)幼虫的控害潜能,室内研究了微小花蝽1~5龄若虫及雌成虫捕食梨瘿蚊3~4龄幼虫的功能反应、寻找效应、种内干扰及竞争作用。结果表明,微小花蝽1~5龄若虫及雌成虫对梨瘿蚊3~4龄幼虫的捕食功能反应均属于HollingⅡ型圆盘方程和HollingⅢ型功能反应新模型。寻找效应(S)随猎物密度(N)的增加而降低,呈负线性相关关系,微小花蝽1~5龄若虫及雌成虫的最佳寻找密度(b)分别为8.9164、11.9445、20.9357、23.3160、29.8461、25.8984头。随自身密度(P)的增加,微小花蝽1~5龄若虫及雌成虫对梨瘿蚊幼虫捕食作用率逐渐减小,干扰和竞争均增大,干扰系数(m)分别为0.5841、0.6425、0.5908、0.5497、0.5772、0.6127,分摊竞争强度(I)与自身密度的常用对数(lg P)呈正线性相关关系。说明微小花蝽对梨瘿蚊幼虫具有良好的控害潜能。To clarify the potential pest control capacity of Orius minutes on the larva of Dasumeira pyri,the functional response,searching efficiency,intraspecific interference and competitive intensity of 1st-5th instar nymphs and female adults of O.minutes on 3rd-4th instar nymphs of D.pyri were observed under laboratory conditions.The results showed that the predation efficacies of O.minutes on D.pyri all followed Holling-II disc equations and new model of Holling-Ⅲfunctional response.There was a negative relationship between searching efficiency(S)and prey density(N),and the optimum searching density(b)of 1st-5th instar nymphs and female adults of O.minutes was 8.9164,11.9445,20.9357,23.3160,29.8461 and 25.8984,respectively.Predation rate was negatively correlated with predator self-density(P),and mutual interference and competition were strengthened with the interference coefficients(m)of 0.5841,0.6425,0.5908,0.5497,0.5772,0.6127.In addition,there was a positive relationship between intensity of scrambling competition(I)and common logarithm of prey density(lg P).These results indicate that the O.minutes is a potential natural enemy for D.pyri.

关 键 词：微小花蝽 梨瘿蚊 功能反应 寻找效应 干扰系数 分摊竞争强度 

分 类 号：S436.612.29[农业科学—农业昆虫与害虫防治]