摘要
为明确东亚小花蝽(Orius sauteri)对东方黏虫[Mythimna separata(Walker)]1龄幼虫的控制潜能,在室内条件下测定东亚小花蝽5龄若虫、雄成虫和雌成虫对东方黏虫1龄幼虫的捕食能力,并采用HollingⅡ模型和Hassell-Varley模型分别拟合计算东亚小花蝽对东方黏虫1龄幼虫的功能反应、搜寻效应和干扰反应。结果表明:东亚小花蝽雌成虫对东方黏虫1龄幼虫的捕食能力最强,其瞬时攻击率与处理单头猎物时间的比值为19.692,理论日最大捕食量为19.231头,且处理单头猎物时间最短,为0.052 d;东亚小花蝽雄成虫对东方黏虫1龄幼虫的捕食能力中等,其瞬时攻击率与处理单头猎物时间的比值为16.610,理论日最大捕食量为16.949头,处理单头猎物时间为0.059 d;东亚小花蝽5龄若虫对东方黏虫1龄幼虫的捕食能力最弱,其瞬时攻击率与处理单头猎物时间的比值为13.211,理论日最大捕食量为13.103头,处理单头猎物时间也最长,为0.076 d。东亚小花蝽的日捕食量与猎物密度呈正相关,与搜寻效应呈负相关;其对猎物的捕食作用率随自身密度的增加而降低,分摊竞争强度随自身密度的增加而增强。综上所述,东亚小花蝽对东方黏虫1龄幼虫具有较好的控制潜能,其中雌成虫的控制潜能最强。
In order to know the control potential of Orius sauteri to the first-instar larvae of oriental armyworm[Mythimna separata(Walker)],the predation ability of the fifth-instar nymphs,male adults and female adults of O.sauteri to the first-instar larvae of M.separata was determined in the laboratory,and the HollingⅡand Hassell-Varley models were used for analyzing the functional response,searching efficiency and mutual interference of O.sauteri to the first-instar larvae of M.separata.The results showed that the female adults of O.sauteri had the strongest predation ability to the first-instar larvae of M.separata(the ratio of instantaneous attack rate to handling time on single prey was 19.692),and their theoretical maximum daily predation was 19.231 individuals,and their handling time on single prey was the shortest(0.052 d).The male adults of O.sauteri had the moderate predation ability to the first-instar larvae of M.separata(the ratio of instantaneous attack rate to handling time on single prey was 16.610),and their theoretical maximum daily predation was 16.949 individuals,and their handling time on single prey was 0.059 d.The fifth-instar nymphs of O.sauteri had the weakest predation ability to the first-instar larvae of M.separata(the ratio of instantaneous attack rate to handling time on single prey was 13.211),and their theoretical maximum daily predation was 13.103 individuals,and their handling time on single prey was the longest(0.076 d).The daily predation of O.sauteri was positively correlated with prey density and negatively correlated with searching efficiency.The predation rate of O.sauteri on the prey decreased with the increase of predator density,while the intra-species competition intensity enhanced with the increase of predator density.In conclusion,O.sauteri has the potential to control the first instar larvae of M.separata,of which the female adults work best.
作者
杨浩岚
李成军
曹付
孙与伦
李茂业
刘苏
李世广
YANG Haolan;LI Chengjun;CAO Fu;SUN Yulun;LI Maoye;LIU Su;LI Shiguang(Key Laboratory of Biology and Sustainable Management of Plant Diseases and Pests of Anhui Higher Education Institutes,School of Plant Protection,Anhui Agricultural University,Hefei 230036,Anhui,China;Key Laboratory for Green Preservation and Control of Tobacco Diseases and Pests in Huanghuai Growing Area,Tobacco Research Institute,Henan Academy of Agricultural Sciences,Xuchang 461000,Henan,China)
出处
《浙江大学学报（农业与生命科学版）》
CAS
CSCD
北大核心
2023年第2期159-166,共8页
Journal of Zhejiang University:Agriculture and Life Sciences
基金
安徽省教育厅“高校优秀青年人才支持计划”项目(gxyq2021167)
中国烟草总公司重大科技项目[110202101051(LS-11)]
中国烟草总公司四川省公司科技项目(SCYC202112)。
关键词
东亚小花蝽
东方黏虫
捕食作用
干扰反应
生物防治
Orius sauteri
Mythimna separata(Walker)
predatory effect
interference response
biological control
