有益真绥螨对截形叶螨和西花蓟马的捕食功能反应  

Functional responses of Euseius utilis on Tetranychus truncatus and Frankliniella occidentalis

作　　者：郭建晗 贾永红[1] 孟瑞霞[1] 刘文明[1] 张东旭[1] 

机构地区：[1]内蒙古农业大学,内蒙古呼和浩特010019

出　　处：《内蒙古农业科技》2015年第3期55-58,共4页Inner Mongolia Agricultural Science and Technology

基　　金：国家公益性行业(农业)科研专项项目(200903032)资助

摘　　要：有益真绥螨(Euseius utilis)是北方地区广泛分布的一种多食性植绥螨。文章研究了有益真绥螨对截形叶螨(Tetranychus truncatus)不同螨态和西花蓟马(Frankliniella occidentalis)1龄若虫的功能反应和干扰反应,评价了有益真绥螨的捕食潜能,为有益真绥螨的开发利用提供依据。结果表明:有益真绥螨对截形叶螨各螨态和西花蓟马1龄若虫的反应均为HollingⅡ型方程;有益真绥螨对截形叶螨幼若螨和西花蓟马1龄若虫的控制能力较强,而对截形叶螨成螨的控制能力最差。当猎物密度固定时,有益真绥螨的平均捕食量随自身密度的增加而逐渐降低。初步显示有益真绥螨具有潜力成为这两种害虫(螨)的有效生防作用物。Euseius utilis is a generalist and distributed widespreadly in northern area of China.The function response and interference of female adults of predatory mites E.utilis on Tetranychus truncatus and 1st instar larvae of Frankliniella occidentalis was determined in the laboratory in order to evaluate its potential for a biological control agent.The results showed that the functional responses for adults of Euseius utilis on T.truncatus and 1st instar larvae of F.occidentalis could be described as Holling Ⅱ type.E.utilis exhibited higher ability to control larvae and nymph of T.truncatus and 1st instar larvae of F.occidentalis whereas the lowest ability to adults of T.truncatus.With a fixed number of prey available,the average predation decreased with predator density increased by mutual competition and interference. E.utilis is promised to be one of the potential biological control agents for T.truncatus and F.occidentalis.

关 键 词：有益真绥螨 截形叶螨 西花蓟马 功能反应 干扰作用 

分 类 号：S476.2[农业科学—农业昆虫与害虫防治]