| 异色瓢虫对草地贪夜蛾的捕食行为观察与评价 |
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| 引用本文： | 刘本菊,秦得强,周游,陈孝甜,马千里,徐汉虹,张志祥.异色瓢虫对草地贪夜蛾的捕食行为观察与评价[J].华南农业大学学报,2020,41(1):28-33. |
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| 作者姓名： | 刘本菊 秦得强 周游 陈孝甜 马千里 徐汉虹 张志祥 |
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| 作者单位： | 天然农药与化学生物学教育部重点实验室/华南农业大学农学院,广东广州510642;天然农药与化学生物学教育部重点实验室/华南农业大学农学院,广东广州510642;天然农药与化学生物学教育部重点实验室/华南农业大学农学院,广东广州510642;天然农药与化学生物学教育部重点实验室/华南农业大学农学院,广东广州510642;天然农药与化学生物学教育部重点实验室/华南农业大学农学院,广东广州510642;天然农药与化学生物学教育部重点实验室/华南农业大学农学院,广东广州510642;天然农药与化学生物学教育部重点实验室/华南农业大学农学院,广东广州510642 |
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| 基金项目： | 广东省现代农业产业技术体系创新团队建设项目（2019KJ122）；广东省重点领域研发计划（2019B020217003） |
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| 摘 要： | 【目的】探究天敌昆虫异色瓢虫Harmonia axyridis对草地贪夜蛾Spodoptera frugiperda的捕食潜力。【方法】在室内条件下评价异色瓢虫成虫和4龄幼虫对草地贪夜蛾1～2龄幼虫的捕食能力,观察并总结异色瓢虫的捕食行为特点。【结果】通过观察,发现异色瓢虫捕食草地贪夜蛾幼虫主要经过静止、搜寻、试探、取食和爬行5种行为,其中异色瓢虫成虫捕食3龄草地贪夜蛾幼虫时出现3对足抱握猎物的现象。异色瓢虫成虫和4龄幼虫对草地贪夜蛾1～2龄幼虫的捕食功能反应符合HollingⅡ模型。异色瓢虫成虫和4龄幼虫对草地贪夜蛾1龄幼虫的日最大捕食量分别为196.08和161.29头,瞬时攻击率分别为1.390 6和1.451 4,处理时间分别为0.005 1和0.006 2 d;异色瓢虫成虫和4龄幼虫对草地贪夜蛾2龄幼虫的日最大捕食量分别为65.36和41.84头,瞬时攻击率分别为1.145 7和1.271 0,处理时间分别为0.015 3和0.023 9 d,即异色瓢虫成虫对草地贪夜蛾幼虫的捕食能力强于4龄幼虫。【结论】异色瓢虫对草地贪夜蛾有一定的潜在控害能力,可用于防控草地贪夜蛾。
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| 关 键 词： | 异色瓢虫 草地贪夜蛾 捕食 生物防治 |
| 收稿时间： | 2019/7/21 0:00:00 |
Observation and evaluation of predatory behavior of Harmonia axyridis on Spodoptera frugiperda |
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| LIU Benju,QIN Deqiang,ZHOU You,CHEN Xiaotian,MA Qianli,XU Hanhong and ZHANG Zhixiang.Observation and evaluation of predatory behavior of Harmonia axyridis on Spodoptera frugiperda[J].Journal of South China Agricultural University,2020,41(1):28-33. |
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| Authors: | LIU Benju QIN Deqiang ZHOU You CHEN Xiaotian MA Qianli XU Hanhong and ZHANG Zhixiang |
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| Institution: | Key Laboratory of Natural Pesticide and Chemical Biology, Ministry of Education/College of Agriculture, South China Agricultural University, Guangzhou 510642, China,Key Laboratory of Natural Pesticide and Chemical Biology, Ministry of Education/College of Agriculture, South China Agricultural University, Guangzhou 510642, China,Key Laboratory of Natural Pesticide and Chemical Biology, Ministry of Education/College of Agriculture, South China Agricultural University, Guangzhou 510642, China,Key Laboratory of Natural Pesticide and Chemical Biology, Ministry of Education/College of Agriculture, South China Agricultural University, Guangzhou 510642, China,Key Laboratory of Natural Pesticide and Chemical Biology, Ministry of Education/College of Agriculture, South China Agricultural University, Guangzhou 510642, China,Key Laboratory of Natural Pesticide and Chemical Biology, Ministry of Education/College of Agriculture, South China Agricultural University, Guangzhou 510642, China and Key Laboratory of Natural Pesticide and Chemical Biology, Ministry of Education/College of Agriculture, South China Agricultural University, Guangzhou 510642, China |
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| Abstract: | Objective To investigate the predation potential of the natural enemies, Harmonia axyridis, to Spodoptera frugiperda.Method The predation behavior of H. axyridis was observed in laboratory, and the predation abilities of H. axyridis adults and the 4th instar larvae to the 1st and 2nd instar larvae of S. frugiperda were evaluated.Result The predatory behaviors of H. axyridis on S. frugiperda larvae included five behaviors of stationary, searching, testing, feeding and crawling. H. axyridis adult appeared three pairs of feet grasping its prey when preying on the 3rd instar larva of S. frugiperda. The predation function responses of H. axyridis adults and the 4th instar larvae to the 1st and the 2nd instar larvae of S. frugiperda were accorded with the Holling II model. For the 1st instar larvae of S. frugiperda, the maximum daily predation amounts of adults and the 4th instar larvae of H. axyridis were 196.08 and 161.29 individuals respectively, the rates of instantaneous attack were 1.390 6 and 1.451 4 respectively, and the handling time were 0.005 1 and 0.006 2 days respectively. For the 2nd instar larvae of S. frugiperda, the maximum daily predation amounts of adults and the 4th instar larvae of H. axyridis were 65.36 and 41.84 individuals respectively, the rates of instantaneous attack were 1.145 7 and 1.271 0 respectively, and the handling time were 0.015 3 and 0.023 9 days respectively. The predation abilities of H. axyridis adults to S. frugiperda larvae were stronger than those of the 4th instar larvae of H. axyridis.Conclusion H. axyridis has certain potential control ability on S. frugiperda and can be used for the prevention and control of S. frugiperda. |
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| Keywords: | Harmonia axyridis Spodoptera frugiperda predation biological control |
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