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中国生物防治学报 ›› 2020, Vol. 36 ›› Issue (4): 513-519.DOI: 10.16409/j.cnki.2095-039x.2020.04.013

• 草地贪夜蛾生物防治专题 • 上一篇    下一篇

大草蛉幼虫对草地贪夜蛾低龄幼虫的捕食能力评价

李萍, 李玉艳, 向梅, 王孟卿, 毛建军, 陈红印, 张礼生   

  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
  • 收稿日期:2020-05-27 出版日期:2020-08-08 发布日期:2020-08-07
  • 通讯作者: 李玉艳,博士,副研究员,E-mail:lyy129@126.com;张礼生,博士,研究员,E-mail:zhangleesheng@163.com。
  • 作者简介:李萍,硕士研究生,E-mail:liping3300@163.com
  • 基金资助:
    国家重点研发计划项目(2017YFD0201000,2017YFE0104900);中国农业科学院重大科研任务(CAAS-ZDRW202007)

Predation Capacity of Chrysopa pallens Larvae to Young Larvae of Spodoptera frugiperda

LI Ping, LI Yuyan, XIANG Mei, WANG Mengqing, MAO Jianjun, CHEN Hongyin, ZHANG Lisheng   

  1. USDA-ARS Sino-American Biological Control Laboratory/Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
  • Received:2020-05-27 Online:2020-08-08 Published:2020-08-07

摘要: 为明确大草蛉对草地贪夜蛾的控害潜能,本试验在室内评价了大草蛉幼虫对草地贪夜蛾低龄幼虫的捕食及搜寻能力,并观察总结了大草蛉的捕食行为特点。结果表明:大草蛉2龄、3龄幼虫对草地贪夜蛾1龄、2龄幼虫均表现出积极的取食行为和较强的捕食能力,尤其对草地贪夜蛾1龄幼虫的日均捕食量较大,分别为78.5头、89.9头,理论条件下日最大捕食量可达125头、167头,其捕食功能反应均符合Holling Ⅱ模型。大草蛉3龄幼虫对草地贪夜蛾低龄幼虫的捕食量、搜寻能力及控害效能均显著高于2龄幼虫,对猎物的瞬时攻击率更强,处理时间更短。本研究结果证实大草蛉幼虫对草地贪夜蛾低龄幼虫均具有较强的控害能力,这对利用草蛉类天敌持续防治草地贪夜蛾具有重要的实践指导意义。

关键词: 大草蛉, 草地贪夜蛾, 捕食能力, 功能反应, 生物防治

Abstract: The potential of Chrysopa pallens (Rambur) to control Spodoptera frugiperda (J.E.Smith) was evaluated under laboratory conditions in this study, and the predation behavior was also observed. The results indicate that the 2nd and 3rd instar larvae of C. pallens showed active feeding behaviors and strong predatory ability against the 1st and 2nd instar larvae of S. frugiperda. In particular, both the 2nd and 3rd instar larvae of C. pallens had a large predatory capacity to the 1st instar larvae of S. frugiperda, with the average daily predation amount of 78.5 and 89.9, respectively, which corresponds to the maximum daily predation amount of 125 and 167, respectively, under theoretical conditions. All stages of C. pallens showed a type II functional response. The predation capacity, searching ability and controlling efficacy of C. pallens 3rd instar larvae to S. frugiperda young larvae were significantly higher than those of C. pallens 2nd instar larvae, respectively. And, the 3rd instar larvae of C. pallens had much higher attacking rate, but shorter handling time. This study confirms that C. pallens larvae have a strong ability to control the young larvae of S. frugiperda, which has an important practical meaning for the long-term sustainable control of S. frugiperda by the predatory insect lacewings.

Key words: Chrysopa pallens, Spodoptera frugiperda, predatory capacity, functional response, biological control

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