多异瓢虫和异色瓢虫对草地贪夜蛾低龄幼虫的捕食能力评价

doi:10.16409/j.cnki.2095-039x.2019.05.004

摘要/Abstract

摘要： 为了评估多异瓢虫Hippodamia variegata（Goeze）、异色瓢虫Harmonia axyridis（Pallas）对重大入侵害虫草地贪夜蛾Spodoptera frugiperda（J.E.Smith）的防控效果，本试验在室内条件下评价了两种瓢虫对草地贪夜蛾1龄、2龄幼虫的捕食能力。结果表明：两种瓢虫对草地贪夜蛾幼虫的捕食功能反应均符合HollingⅡ模型，多异瓢虫对草地贪夜蛾1龄幼虫的日最大捕食量、瞬时攻击率和处理时间分别为210.393头、1.279和0.005 d；对草地贪夜蛾2龄幼虫的日最大捕食量、瞬时攻击率和处理时间分别为62.189头、1.167和0.016 d。异色瓢虫对草地贪夜蛾1龄幼虫的日最大捕食量、瞬时攻击率和处理时间分别为249.004头、1.854和0.004 d；对草地贪夜蛾2龄幼虫的日最大捕食量、瞬时攻击率和处理时间分别为68.260头、1.281和0.015 d。多异瓢虫和异色瓢虫的搜寻效应随猎物密度的增加而逐渐降低。试验证明两种瓢虫对草地贪夜蛾具有较好的控害效果，可用于对草地贪夜蛾的防控实践。

关键词: 多异瓢虫, 异色瓢虫, 草地贪夜蛾, 捕食作用

Abstract: To evaluate the control efficacy of Hippodamia variegata (Goeze) and Harmonia axyridis (Pallas) adults against Spodoptera frugiperda (J. E. Smith), the functional responses of H. variegata and H. axyridis to S. frugiperda 1^st and 2^nd instar larvae were studied in laboratory. The results show that the maximum daily predation number, sequence of attacking efficiency, and handling time of H. variegata adults were 210.4, 1.279 and 0.005 d, respectively, against S. frugiperda 1^st instars and 62.2, 1.167 and 0.016 d, respectively, against S. frugiperda 2^nd instars. The values of H. axyridis adults were 249.0, 1.854 and 0.004 d, respectively, against S. frugiperda 1^st instars and 68.3, 1.281 and 0.015 d, respectively, against S. frugiperda 2^nd instars. H. variegata and H. axyridis adult reduced their search behavior with the increase of prey density. The results show that H. variegata and H. axyridis adult are efficient in control of S. frugiperda and can be used in the field.

Key words: Hippodamia variegata, Harmonia axyridis, Spodoptera frugiperda, predation

中图分类号:

S476.2

孔琳, 李玉艳, 王孟卿, 刘晨曦, 毛建军, 陈红印, 张礼生. 多异瓢虫和异色瓢虫对草地贪夜蛾低龄幼虫的捕食能力评价[J]. 中国生物防治学报, 2019, 35(5): 709-714.

KONG Lin, LI Yuyan, WANG Mengqing, LIU Chenxi, MAO Jianjun, CHEN Hongyin, ZHANG Lisheng. Predation of Hippodamia variegata and Harmonia axyridis to Young Larvae of Spodoptera frugiperda[J]. Chinese Journal Of Biological Control, 2019, 35(5): 709-714.

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