摘要
在室内条件下研究了圆果大赤螨对桑树害虫朱砂叶螨、桑蓟马和桑粉虱的捕食作用。结果表明,圆果大赤螨对3种猎物的捕食功能反应均符合HollingⅡ功能反应模型,经χ2检验,理论值与观测值差异不显著。捕食功能反应参数表明圆果大赤螨对桑蓟马、朱砂叶螨和桑粉虱捕食量差异显著,其最大日捕食量理论值分别为:416.67、222.22、97.09头。圆果大赤螨对猎物的搜寻效应均随猎物密度的增加而呈线性下降,且取食桑蓟马的搜寻效应明显高于朱砂叶螨和桑粉虱。HollingⅢ型功能反应新模型拟合得出,1头圆果大赤螨对桑蓟马、朱砂叶螨、桑粉虱的最佳寻找密度分别为77.54头、70.49头和27.27头。研究表明,圆果大赤螨对桑树害虫捕食能力依次为桑蓟马>朱砂叶螨>桑粉虱,且对3种害虫均具有较强捕食能力,是桑园害虫的重要天敌资源。
Predatory function responses of Anystis baccarum adults to Pseudodendrothrips mori Niwa,Tetranychus cinnabarinus Boisduv and Pealius mori（ Takahashi） were measured in laboratory. Results showed that the functional responses of A. baccarum adults to the three prey density fitted well with HollingⅡ model. And there were no significant differences between theoretic values and the observed values by Chi-square test. The predatory capacities between A. baccarum and three prey species was significant differences and the maximum daily predatory capacities of A. baccarum adults Ps. mori,T. cinnabarinus and Pe. mori were 416. 7,222. 2,97. 1 pests/day,respectively. Searching rate of A. baccarum decreased with the increase in prey density and that was highest on Pseudodendrothrips mori than on Tetranychus cinnabarinus and the best seeking density was about 77. 5,70. 5,27. 3 pests per predator according to Holling Ⅲ new functional response model. Altogether,the predatory capacities of A. baccarum to the prey was Ps. mori 〉T. cinnabarinus 〉Pe. mori. A. baccarum has strong predation function to three species pests,and it was an important natural enemies of pests resource in mulberry field.
出处
《环境昆虫学报》
CSCD
北大核心
2017年第6期1356-1362,共7页
Journal of Environmental Entomology
基金
现代农业产业技术体系建设专项资金项目(CARS-22-SYZ27)
云南省现代农业蚕桑产业技术体系项目(No.2013KJTX006)
关键词
圆果大赤螨
桑蓟马
朱砂叶螨
桑粉虱
功能反应
搜寻效应
Anystis baccarum
Pseudodendrothrips mori
Tetranychus cinnabarinus
Pealius mori
predation function
searching efficiency
