植物保护学报2025，Vol.52Issue(3)：614-622,9.DOI:10.13802/j.cnki.zwbhxb.2025.2025015
曙厉蝽对斜纹夜蛾室内外捕食能力的比较
Comparison of indoor and outdoor predatory performance of the predatory stink bug Eocanthecona concinna against taro caterpillar Spodoptera litura
摘要
Abstract
To clarify the biocontrol potential of the predatory stink bug Eocanthecona concinna against taro caterpillar Spodoptera litura,the predation capacity,searching efficiency and intraspecific interfer-ence of 5th-instar nymphs and male and female adults were compared under two conditions:indoor(in Petri dishes)and outdoor(on tobacco plants,Nicotiana tabacum).The results showed that,in both envi-ronments,the functional responses of all predator stages to 3rd-instar S.litura larvae followed the Hol-ling type II model.While the actual predation rates were slightly higher indoors than outdoors at the same prey density,the difference was not statistically significant.Predatory performance ranked as fol-lows:indoor females>indoor males>indoor nymphs>outdoor females>outdoor males>outdoor nymphs,with respective control efficiencies of 10.546,10.093,9.247,8.345,6.939,and 6.906.The highest instantaneous attack rate(1.139)occurred in indoor females,while outdoor nymphs had the shortest handling time(0.085 d)and the highest daily maximum predation(11.77).Predation increased with prey density but search efficiency declined.Intraspecific interference was evident,as individual predation rates decreased with increasing predator density.These findings indicate that both nymphs and adults of E.concinna are effective predators of S.litura,with slightly reduced efficiency under out-door conditions.关键词
曙厉蝽/斜纹夜蛾/捕食功能反应/搜寻效应/干扰效应Key words
Eocanthecona concinna/Spodoptera litura/predatory functional response/searching efficiency/intraspecific interference引用本文复制引用
余志勇,肖艳松,李敦松,张洁,李鹏燕,郭义..曙厉蝽对斜纹夜蛾室内外捕食能力的比较[J].植物保护学报,2025,52(3):614-622,9.基金项目
湖南省烟草公司郴州市公司科技项目(CZYC2023JS06) （CZYC2023JS06）
