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中国生物防治学报 ›› 2022, Vol. 38 ›› Issue (4): 959-966.DOI: 10.16409/j.cnki.2095-039x.2021.09.017

• 研究论文 • 上一篇    下一篇

异色瓢虫和龟纹瓢虫幼虫对番茄潜叶蛾低龄幼虫的捕食功能反应

杨桂群, 范苇, 张倩, 李貌, 蒋正雄, 段盼, 胡昌雄, 陈国华, 张晓明   

  1. 云南农业大学植物保护学院/云南生物资源保护与利用国家重点实验室, 昆明 650201
  • 收稿日期:2021-07-08 发布日期:2022-08-11
  • 通讯作者: 张晓明,博士,副教授,E-mail:zxmalex@126.com
  • 作者简介:杨桂群,本科生,E-mail:yang18406968737@163.com;范苇,本科生,E-mail:2916005524@qq.com
  • 基金资助:
    国家重点研发计划(2021YFD1400200);云南省中青年学术技术带头人后备人才项目(202105AC160071);"云南省高层次人才培养支持计划"青年拔尖人才项目(YNWRQNBJ2020291);第十七批昆明市中青年学术和技术带头人后备人选项目(KMRCH2019023)

Predatory Function of Harmonia axyridis and Propylea japonica Larvae to Young Larvae of Tuta absoluta

YANG Guiqun, FAN Wei, ZHANG Qian, LI Mao, JIANG Zhengxiong, DUAN Pan, HU Changxiong, CHEN Guohua, ZHANG Xiaoming   

  1. State Key Laboratory for Conservation and Utilization of Biological Resources in Yunnan/College of Plant Protection, Yunnan Agricultural University, Kunming 650201, China
  • Received:2021-07-08 Published:2022-08-11

摘要: 为明确异色瓢虫Harmonia axyridis和龟纹瓢虫Propylea japonica对番茄潜叶蛾Tuta absoluta的控害能力。本试验在实验室条件下选取异色瓢虫和龟纹瓢虫4龄幼虫对番茄潜叶蛾低龄幼虫(1龄、2龄)的捕食功能反应和搜寻效应进行系统研究。结果表明,异色瓢虫和龟纹瓢虫4龄幼虫对番茄潜叶蛾低龄幼虫的捕食功能反应均符合HollingⅡ模型;两种瓢虫的日捕食量与猎物密度在一定范围内呈正相关关系,当猎物密度N→+∞时,异色瓢虫和龟纹瓢虫对番茄潜叶蛾1、2龄幼虫的理论日最大捕食量Namax分别为147.06头、140.85头和333.33头、149.25头。异色瓢虫的最高日捕食率达98%,显著高于龟纹瓢虫的最高日捕食率79%。两种瓢虫对番茄潜叶蛾搜寻效应随猎物密度的增大而降低,且异色瓢虫对番茄潜叶蛾的搜寻效应显著高于龟纹瓢虫,异色瓢虫对番茄潜叶蛾低龄幼虫的最高搜寻效应高于0.90,而龟纹瓢虫对番茄潜叶蛾低龄幼虫的最高搜寻效应低于0.80。异色瓢虫对番茄潜叶蛾低龄幼虫的捕食能力稍强于龟纹瓢虫,但两种瓢虫对番茄潜叶蛾低龄幼虫均有较好捕食作用,可在一定程度上控制低龄幼虫的数量,故可将两种瓢虫作为番茄潜叶蛾重要的生物防治材料加以研究和利用。

关键词: 异色瓢虫, 龟纹瓢虫, 番茄潜叶蛾, 捕食功能

Abstract: The control ability of Harmonia axyridis and Propylea japonica on Tuta absoluta was evaluated by investigating the predatory function and searching responses of the 4th instar larvae H.axyridis and P.japonica to the young larvae of T.absoluta (1stand 2nd instars) under laboratory conditions.The results showed that the predatory functional responses of the 4th instar larvae H.axyridis and P.japonica to the 1st and 2nd instar larvae of T.absoluta conformed to HollingⅡ model;the daily predation of the two ladybirds species was positively correlated with the prey density within a certain range,when the T.absoluta density was N→+∞,the maximum daily predation Namaxof H.axyridis and P.axyridis to the 1st instar T.absoluta larvae were 147.06 and 333.33,respectively,and to the 2nd instar T.absoluta larvae,140.85 and 149.25,respectively.The highest daily predation rate of H.axyridis reached 98%,significantly higher than that of P.axyridis.The searching efficiency of the two ladybirds species on T.absoluta decreased with the increase of prey density,which was higher in H.axyridis than in P.axyridis.The highest searching efficiency of H.axyridis was >0.90,while that of P.axyridis was<0.80.The predatory ability of H.axyridis to low instar larvae of T.absoluta was slightly stronger than that of P.axyridis,but both the ladybirds species afforded high predation and control of young larvae of T.absoluta.The two ladybirds species can be further studied as important biological control agents for control of T.absoluta.

Key words: Harmonia axyridis, Propylea japonica, Tuta absoluta, predation function

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