| 游梓翊，曾涛，刘平平，陈德鑫，蒲小明，孙郑，邓海滨,2023,红彩瑞猎蝽对草地贪夜蛾幼虫的控害能力[J].环境昆虫学报,(6):1653-1664 |
| 红彩瑞猎蝽对草地贪夜蛾幼虫的控害能力 |
| Predation of Rhynocoris fuscipes to Spodoptera frugiperda larvae |
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| DOI： |
| 中文关键词: 饥饿程度 红彩瑞猎蝽 草地贪夜蛾 捕食功能反应 搜寻效应 干扰反应 |
| 英文关键词:Starvation Rhynocoris fuscipes Spodoptera frugiperda predatory functional response searching efficiency interference effect |
| 基金项目:中国烟草总公司科技重大专项项目（110202101028（LS-03））；中国烟草总公司广东省公司科技项目（2019440000200031，2020440000240056）；海南省重点研发计划项目(ZDYF2021XDNY141) |
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| 中文摘要: |
| 为明确红彩瑞猎蝽Rhynocoris fuscipes Fabricius成虫对草地贪夜蛾Spodoptera frugiperda J. E. Smith幼虫的控害潜能，室内条件下研究了不同饥饿时间处理红彩瑞猎蝽对草地贪夜蛾3龄幼虫的捕食功能反应、自身密度干扰效应和搜寻效应。结果表明，饥饿0 h、24 h、48 h、72 h和96 h条件下，红彩瑞猎蝽雌、雄成虫对草地贪夜蛾3龄幼虫的功能反应符合Holling Ⅱ型功能反应方程；饥饿程度对红彩瑞猎蝽24 h内捕食量影响明显，饥饿48 h和72 h处理的红彩瑞猎蝽对草地贪夜蛾具有更旺盛的捕食欲，其捕食速度曲线分别为v=0.9047-0.0592t+0.009t2和v=1.1512-0.0702t+0.0011t2，对草地贪夜蛾的捕食量随着时间的变化模型分别为Na=20/（1+e1.968-0.79t)和Na=20/（1+e1.689-0.93t）。不同饥饿程度红彩瑞猎蝽搜寻效应随猎物密度的增加而逐渐降低，其个体间竞争和干扰作用与天敌自身密度变化呈正比，符合Hassell-Varley模型。结果表明，红彩瑞猎蝽成虫对草地贪夜蛾幼虫有较好的防治潜力。 |
| 英文摘要: |
| In order to investigate the biocontrol potential of Rhynocoris fuscipes on Spodoptera frugiperda, the predatory functional response, mutual interference effect and searching efficiency of adults of R. fuscipes under starvation stress on the 3rd-instar larvae of S. frugiperda was conducted under laboratory conditions. The results showed that the functional response of predation of both female and male adults of R. fuscipes on different ranges of 0 h, 24 h, 48 h, 72 h and 96 h starvation to S. frugiperda all followed Holling II disc equations. The extent of starvation had a significant effect on the predation quantity of R. fuscipes in 24 h, and the adults starved for 48 h and 72 h had a stronger predation desire on the S. frugiperda larvae. The models on the relationship between predacious rate(v) and time(x) were shown as: v=0.9047-0.0592t+0.009t2 and v=1.1512-0.0702t+0.0011t2 ,respectively. The predacious number (Na) of R. fuscipes on S. frugiperda had a variation with time (t) as shown in the model: Na=20/（1+e1.968-0.79t) and Na=20/（1+e1.689-0.93t）,respectively. The searching efficiency of R. fuscipes against S. frugiperda larvae decreased with increasing prey density, and the interference effect increased with increasing density of S. frugiperda, which matched the model of Hassell-Varley. The results proves that R. fuscipes adults are efficient for the control of S. frugiperda , and this study could provide a theoretical basis for the biocontrol of S. frugiperda by R. fuscipes in fields. |
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