| 蠋蝽对棉铃虫幼虫的捕食功能反应 |
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| 引用本文：孙婧婧,王孟卿,唐艺婷,李心钰,张礼生,李虎.蠋蝽对棉铃虫幼虫的捕食功能反应.植物保护学报,2021,48(5):1081-1087 |
| DOI：10.13802/j.cnki.zwbhxb.2021.2021074 |
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| 中文摘要:为明确蠋蝽Arma custos对棉铃虫Helicoverpa armigera幼虫的生物防控潜能，在室内条件下测定蠋蝽5龄若虫和雌、雄成虫对棉铃虫3龄幼虫的捕食能力以及不同蠋蝽密度对自身捕食作用的影响。结果显示：蠋蝽5龄若虫和雌、雄成虫对棉铃虫3龄幼虫的捕食功能反应均符合Holling Ⅱ模型。蠋蝽5龄若虫对棉铃虫3龄幼虫的瞬时攻击率、处理时间和日最大捕食量分别为0.829、0.024 d和41.667头；蠋蝽雌成虫对棉铃虫3龄幼虫的瞬时攻击率、处理时间和日最大捕食量分别为0.796、0.020 d和50.000头；蠋蝽雄成虫对棉铃虫3龄幼虫的瞬时攻击率、处理时间和日最大捕食量分别为0.752、0.021 d和47.619头。蠋蝽5龄若虫和雌、雄成虫对棉铃虫3龄幼虫的搜寻效应均随猎物密度的增加而逐渐降低。当棉铃虫幼虫密度固定时，单头蠋蝽的日捕食量随蠋蝽密度的增加而逐渐降低，蠋蝽对棉铃虫的捕食作用受到自身密度的干扰，5龄若虫和雌、雄成虫的干扰系数分别为0.548、0.702和0.772。表明蠋蝽5龄若虫及雌、雄成虫均对棉铃虫3龄幼虫具有一定的防控能力，且成虫对棉铃虫幼虫的防控能力大于5龄若虫。 |
| 中文关键词:蠋蝽 棉铃虫 生物防治 功能反应 |
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| Predatory functional response of Arma custos (Hemiptera:Pentatomidae) to the larvae of Helicoverpa armigera (Lepidoptera:Noctuidae) |
| Author Name | Affiliation | E-mail | | Sun Jingjing | Department of Entomology, College of Plant Protection, China Agricultural University, Beijing 100193, China | | | Wang Mengqing | Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China | mengqingsw@163.com | | Tang Yiting | Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China | | | Li Xinyu | Department of Entomology, College of Plant Protection, China Agricultural University, Beijing 100193, China | | | Zhang Lisheng | Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China | | | Li Hu | Department of Entomology, College of Plant Protection, China Agricultural University, Beijing 100193, China | tigerleecau@hotmail.com |
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| Abstract:To investigate the potential of Arma custos to control the larvae of the cotton bollworm Helicoverpa armigera, the predation behaviors of A. custos at the 5th instar nymphal and adult stages towards the 3rd instar H. armigera larvae, and the effects of predator density on the predation ability of A. custos were tested under laboratory conditions. The results showed that the predatory functional response of the 5th instar larvae and adults of A. custos fitted the Holling Ⅱ equation. The 5th instar nymphs had an attacking efficiency of 0.829, prey handling time of 0.024 d and a maximum predation of 41.667 heads; female adults had an attacking efficiency of 0.796, prey handling time of 0.020 d and a maximum daily predation of 50.000 heads; male adults had an attacking efficiency of 0.752, prey handling time of 0.021 d and a maximum daily predation of 47.619 heads. The searching effect of A. custos decreased with increasing density of H. armigera. When the density of H. armigera remained constant, increasing A. custos density resulted in a decrease in the individual daily predation rate. The predation of A. custos on the larvae of H. armigera was interfered by its own density, and the interference coefficients of the 5th instar nymphs, female and male adults of A. custos were 0.548, 0.702 and 0.772, respectively. The results indicated that both the 5th instar nymphs and adults of A. custos had a good potential to control H. armigera, and adults had a better pest control potential than the 5th instar nymphs. |
| keywords:Arma custos Helicoverpa armigera biological control functional response |
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