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唐艺婷1, 郭 义2, 潘明真3, 毛建军1, 陈红印1, 张礼生1, 王孟卿1*.蠋蝽对小菜蛾幼虫的捕食作用[J].植物保护,2020,46(4):155-160.
蠋蝽对小菜蛾幼虫的捕食作用
Predation of Plutella xylostella larva by Arma chinensis
投稿时间:2019-05-15  修订日期:2020-04-08
DOI:10.16688/j.zwbh.2019243
中文关键词:  蠋蝽  小菜蛾  功能反应  生物防治
英文关键词:Arma chinensis  Plutella xylostella  functional response  biological control
基金项目:国家重点研发计划(2017YFD0201000,2017YFD0800705);国家自然科学基金(31672326)
作者单位E-mail
唐艺婷1, 郭 义2, 潘明真3, 毛建军1, 陈红印1, 张礼生1, 王孟卿1* 1. 中国农业科学院植物保护研究所, 中美合作生物防治实验室, 北京 100193
2. 广东省农业科学院植物保护研究所, 广州 510640
3. 青岛农业大学植物医学院, 青岛 266109 
mengqingsw@163.com 
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中文摘要:
      本试验在室内研究了蠋蝽3~5龄若虫及成虫对小菜蛾幼虫的捕食能力,采用HollingⅡ功能反应模型和Hassell模型,以明确蠋蝽对小菜蛾的捕食潜能以及蠋蝽自身密度对小菜蛾捕食作用的影响。结果表明,蠋蝽3~5龄若虫及成虫对小菜蛾幼虫的捕食模型均符合HollingⅡ模型;蠋蝽3~5龄若虫和成虫瞬时攻击率由大到小依次为1.461(3龄若虫)>1.322(4龄若虫)>1.086(5龄若虫)>0.803(雌成虫)>0.734(雄成虫);蠋蝽5龄若虫的日最大捕食量最高,为83.33头。随着小菜蛾幼虫密度增大,蠋蝽的搜寻效应逐渐降低,5龄若虫的搜寻效应明显大于其他虫态。蠋蝽3~5龄若虫及成虫自身密度对其捕食作用的干扰效应明显,其中蠋蝽3龄若虫的竞争参数最大,为0.862。本研究表明蠋蝽对小菜蛾具有较好的捕食潜力,尤其是蠋蝽5龄若虫。
英文摘要:
      The predation of Plutella xylostella by the 3rd-5th instar nymphs and adults of Arma chinensis was studied in the laboratory. Holling Ⅱ function response model and Hassell interference response models were used to determine the predation potential of A. chinensis and the effect of prey density. The results showed that 3rd-5th instar nymphs and adults of predator exhibited Holling Ⅱ functional responses. The sequence of attacking efficiency was as followed: 3rd instar nymph (1.461), 4th instar nymph (1.322), 5th instar nymph (1.086), female adult (0.803) and male adult (0.734). The maximum daily predation capacity of 5th instar nymph was 83.33 individuals. With the increase of prey’s density, predator’s searching efficiency decreased gradually, and the searching efficiency of 5th instar nymph was obviously higher than that of other stages. The interference effect of the population density to the predator was significant, and the competition parameter of 3rd instar nymph was the biggest (0.862). It indicated a substantial predation potential, especially the 5th instar nymph of A.chinensis against P.xylostella.
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