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中国生物防治学报 ›› 2020, Vol. 36 ›› Issue (4): 520-524.DOI: 10.16409/j.cnki.2095-039x.2020.04.010

• 草地贪夜蛾生物防治专题 • 上一篇    下一篇

益蝽不同龄期若虫对草地贪夜蛾幼虫的捕食能力

王燕1,2, 张红梅1, 李向永1, 尹艳琼1, 赵雪晴1, 陈福寿1, 张礼生3   

  1. 1. 云南省农业科学院农业环境资源研究所, 昆明 650205;
    2. 云南农业大学植物保护学院, 昆明 650201;
    3. 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:2020-02-24 出版日期:2020-08-08 发布日期:2020-08-07
  • 通讯作者: 陈福寿,硕士,研究员,E-mail:chenfsh36@163.com;张礼生,博士,研究员,E-mail:zhangleesheng@163.com。
  • 作者简介:王燕,博士研究生,副研究员,E-mail:piglucky@126.com;张红梅,副研究员,E-mail:bshrjs999@163.com。
  • 基金资助:
    农业农村部草地贪夜蛾应急调研指导项目;云南省财政专项(YAAS201902);国家重点研发计划(2017YFD0201003);云南省农业跨境有害生物协同绿色防控创新团队;云南省重点研发计划(2019IB007)

Predation of Picromerus lewisi Nymph on Larvae of Spodoptera frugiperda

WANG Yan1,2, ZHANG Hongmei1, LI Xiangyong1, YIN Yanqiong1, ZHAO Xueqing1, CHEN Fushou1, ZHANG Lisheng3   

  1. 1. Institute of Agriculture Environment and Resources, Yunnan Academy of Agricultural Sciences, Kunming 650205, China;
    2. College of Plant Protection, Yunnan Agriculture University, Kunming 650201, China;
    3. Institute of Plant Protection, Chinese Academy of Agricultural Sciences/USDA-ARS Sino-American Biological Control Laboratory, Beijing 100193, China
  • Received:2020-02-24 Online:2020-08-08 Published:2020-08-07

摘要: 为了评估益蝽若虫对草地贪夜蛾不同龄期幼虫的捕食潜力,本试验在室内条件下开展了益蝽若虫对草地贪夜蛾3、4、5龄幼虫的捕食能力试验。结果表明:益蝽3、4、5龄若虫对草地贪夜蛾3、4、5龄幼虫的捕食功能反应均符合HollingⅡ圆盘方程,3龄若虫对草地贪夜蛾3、4、5龄幼虫的日最大捕食量分别为55.556、8.019、5.666头;瞬时攻击率分别为0.819、1.826、1.503;处理时间分别为0.018、0.125、0.177 d。4龄若虫对草地贪夜蛾3、4、5龄幼虫的日最大捕食量分别为60.753、19.924、10.325头;瞬时攻击率分别为0.993、1.664、0.968;处理时间分别为0.017、0.050、0.097 d。5龄若虫对草地贪夜蛾3、4、5龄幼虫的日最大捕食量分别为65.789、23.635、12.331头;瞬时攻击率分别为1.021、1.307、0.863;处理时间分别为0.015、0.042、0.081 d。益蝽若虫对草地贪夜蛾3、4、5龄幼虫都能捕食,对3龄幼虫捕食量最大,最喜欢捕食4~5龄幼虫,对4龄幼虫的瞬时攻击率最高。益蝽若虫对草地贪夜蛾具有较好的捕食能力,本文为草地贪夜蛾的可持续防控提供了新的方法和依据。

关键词: 益蝽若虫, 草地贪夜蛾幼虫, 捕食, 评估

Abstract: The predation potential of Picromerus lewisi (Fallou) to Spodoptera frugiperda (J. E. Smith) was evaluated using P. lewisi nymph and 3rd, 4th and 5th instar larvae of S. frugiperda under indoor conditions. The results showed that the maximum daily predation amount of P. lewisi 3rd nymph to the 3rd, 4th and 5th instar larvae of S. frugiperda was 55.556, 8.019 and 5.666, respectively. The instantaneous attacking rates were 0.819, 1.826 and 1.503, respectively. The handling time was 0.018, 0.125 and 0.177 day, respectively. The maximum daily predation amount of P. lewisi 4th nymph to the 3rd, 4th and 5th instar larvae of S. frugiperda was 60.753, 19.924 and 10.325, respectively. The instantaneous attacking rates were 0.993, 1.664 and 0.968, respectively. The handling time was 0.017, 0.050 and 0.968, respectively. The maximum daily predation amount of P. lewisi 5th nymph to the 3rd, 4th and 5th instar larva of S. frugiperda was 65.789, 23.635 and 12.331, respectively. The instantaneous attacking rates were 1.021, 1.307 and 0.863, respectively. The handling time was 0.015, 0.042 and 0.081, respectively. P. lewisi 3rd-5th nymph can prey on 3rd, 4th and 5th instar larvae of S. frugiperda, with predation amount to the 3rd instars the largest, preference more for the 4th and 5th instars, and attacking efficiency to the 4th instars the highest. The results indicate that P. lewisi has good control effect on S. frugiperda and can be used for the prevention and control of this pest.

Key words: Picromerus lewisi, S. frugiperda, predatory, evaluation

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