摘要
为明确蠋蝽对斜纹夜蛾的捕食能力,在实验室条件下进行蠋蝽3~5龄若虫及成虫对斜纹夜蛾3龄幼虫的捕食能力测试,数据采用HollingⅡ功能反应模型进行拟合以明确其捕食潜能,利用Hassell模型拟合并测定了蠋蝽自身密度对斜纹夜蛾捕食作用的影响。结果表明,蠋蝽3~5龄若虫及成虫对斜纹夜蛾幼虫的捕食模型均符合HollingⅡ模型;蠋蝽3~5龄若虫和成虫瞬时攻击率顺序是3龄(1.873)>雌成虫(1.329)>4龄(1.187)>5龄(1.125)>雄成虫(0.828);蠋蝽雌成虫的日最大捕食量最大,为13.699头。随着斜纹夜蛾3龄幼虫密度增大,蠋蝽的搜寻效应逐渐降低,雌成虫的搜寻效应明显大于其他虫态。随着天敌蠋蝽密度增大,干扰增强,平均捕食量随之降低。本研究显示出蠋蝽雌成虫对斜纹夜蛾具有较大的捕食潜能。
In order to know the parasitoidism of Arma chinensis on Spodoptera litura,the predation of 3-5 instar nymph and adult of A.chinensis on S.litura was studied in laboratory.Experimental data was fitted to the mathematical model HollingⅡin which controlling effects were determined by parameters of preying potential capacity.The influences of the predator’s density functional response were determined by the mathematical model Hassell.The results showed that 3-5 instar nymph and adult predators exhibited Holling II functional responses,with the order of attacking efficiency being 3rd(1.873)>female(1.329)>4th(1.187)>5th(1.125)>male(0.828).The maximum daily predation number of female was 13.699.With the increase of prey’s density,predators’searching effect decreases gradually,and the searching effect of female was obviously larger than that of other stages.As the density of A.chinensiss increased,the interference was stronger and the average predation decreased.It indicated that female A.chinensis has a greater predation potential for S.litura.
作者
唐艺婷
王孟卿
李玉艳
刘晨曦
毛建军
陈红印
张礼生
TANG Yiting;WANG Mengqing;LI Yuyan;LIU Chenxi;MAO Jianjun;CHEN Hongyin;ZHANG Lisheng(USDA-ARS Sino-American Biological Control Laboratory,Institute of Plant Protection,Chinese Academy of Agricultural Sciences,Beijing 100193,China)
出处
《中国烟草科学》
CSCD
北大核心
2020年第1期62-66,共5页
Chinese Tobacco Science
基金
国家重点研发计划“天敌昆虫防控技术及产品研发”(2017YFD0201000,2017YFD0800705)
国家自然科学基金(31672326)
关键词
蠋蝽
斜纹夜蛾
生物防治
功能反应
Arma chinensis
Spodoptera litura
biological control
functional response
