摘要
本试验在室内研究了蠋蝽3~5龄若虫及成虫对小菜蛾幼虫的捕食能力,采用HollingⅡ功能反应模型和Hassell模型,以明确蠋蝽对小菜蛾的捕食潜能以及蠋蝽自身密度对小菜蛾捕食作用的影响。结果表明,蠋蝽3~5龄若虫及成虫对小菜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由大到小依次为1.461(3龄若虫)>1.322(4龄若虫)>1.086(5龄若虫)>0.803(雌成虫)>0.734(雄成虫);蠋蝽5龄若虫的日最大捕食量最高,为83.33头。随着小菜蛾幼虫密度增大,蠋蝽的搜寻效应逐渐降低,5龄若虫的搜寻效应明显大于其他虫态。蠋蝽3~5龄若虫及成虫自身密度对其捕食作用的干扰效应明显,其中蠋蝽3龄若虫的竞争参数最大,为0.862。本研究表明蠋蝽对小菜蛾具有较好的捕食潜力,尤其是蠋蝽5龄若虫。
The predation of Plutella xylostella by the 3rd-5th instar nymphs and adults of Arma chinensis was studied in the laboratory.HollingⅡfunction response model and Hassell interference response models were used to determine the predation potential of A.chinensis and the effect of prey density.The results showed that 3rd-5th instar nymphs and adults of predator exhibited HollingⅡfunctional responses.The sequence of attacking efficiency was as followed:3rd instar nymph(1.461),4th instar nymph(1.322),5th instar nymph(1.086),female adult(0.803)and male adult(0.734).The maximum daily predation capacity of 5th instar nymph was 83.33 individuals.With the increase of prey’s density,predator’s searching efficiency decreased gradually,and the searching efficiency of 5th instar nymph was obviously higher than that of other stages.The interference effect of the population density to the predator was significant,and the competition parameter of 3rd instar nymph was the biggest(0.862).It indicated a substantial predation potential,especially the 5th instar nymph of A.chinensis against P.xylostella.
作者
唐艺婷
郭义
潘明真
毛建军
陈红印
张礼生
王孟卿
TANG Yiting;GUO Yi;PAN Mingzhen;MAO Jianjun;CHEN Hongyin;ZHANG Lisheng;WANG Mengqing(Institute of Plant Protection,Chinese Academy of Agricultural Sciences,USDA-ARS Sino-American Biological Control Laboratory,Beijing 100193,China;Institute of Plant Protection,Guangdong Academy of Agricultural Sciences,Guangzhou 510640,China;College of Plant Health and Medicine,Qingdao Agricultural University,Qingdao 266109,China)
出处
《植物保护》
CAS
CSCD
北大核心
2020年第4期155-160,共6页
Plant Protection
基金
国家重点研发计划(2017YFD0201000,2017YFD0800705)
国家自然科学基金(31672326)。
关键词
蠋蝽
小菜蛾
功能反应
生物防治
Arma chinensis
Plutella xylostella
functional response
biological control
