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中国生物防治学报 ›› 2017, Vol. 33 ›› Issue (6): 811-816.DOI: 10.16409/j.cnki.2095-039x.2017.06.014

• 研究论文 • 上一篇    下一篇

异色瓢虫对梨瘿蚊幼虫的捕食功能反应及捕食偏好

杜浩1, 高旭辉1, 刘坤2, 赵广2, 李贞1, 张青文1, 刘小侠1   

  1. 1. 中国农业大学植物保护学院, 北京 100193;
    2. 湖北省老河口市果品研究所, 老河口 441800
  • 收稿日期:2017-07-19 出版日期:2017-12-08 发布日期:2017-12-16
  • 通讯作者: 刘小侠,副教授,E-mail:liuxiaoxia611@cau.edu.cn
  • 作者简介:杜浩,硕士,E-mail:duhao93@126.com
  • 基金资助:
    国家梨产业技术体系专项(CARS-29-08)

Predation Functional Responses and Preference of Harmonia axyridis Pallas to Contarinia pyrivora Riley

DU Hao1, GAO Xuhui1, LIU Kun2, ZHAO Guang2, LI Zhen1, ZHANG Qingwen1, LIU Xiaoxia1   

  1. 1. College of Plant Protection, China Agricultural University, Beijing 100193, China;
    2. Fruit Research Institute of Laohekou City in Hubei Province, Laohekou 441800, China
  • Received:2017-07-19 Online:2017-12-08 Published:2017-12-16

摘要: 为明确异色瓢虫对梨瘿蚊幼虫的潜在防控能力,在室内条件下研究了异色瓢虫对梨瘿蚊幼虫的捕食功能、寻找效应、种内干扰反应及对不同猎物的捕食偏好。结果显示,异色瓢虫幼虫和成虫对梨瘿蚊幼虫的捕食功能反应均符合Holling-Ⅱ型模型,其中以成虫捕食量最大,24 h理论最大捕食量75.19头。异色瓢虫各龄幼虫、成虫对梨瘿蚊幼虫的寻找效应均随梨瘿蚊数量的增加而减小。梨瘿蚊幼虫数量固定时,随着异色瓢虫密度的增加,单头异色瓢虫日平均捕食量逐渐降低。异色瓢虫对梨瘿蚊幼虫有较强捕食偏好,存在梨瘿蚊与梨木虱两种捕食对象的情况下,异色瓢虫倾向于选择捕食梨瘿蚊,Cain指数D值均大于1。综合分析捕食功能和捕食偏好性,表明异色瓢虫对梨瘿蚊具有良好的控害潜能。

关键词: 异色瓢虫, 梨瘿蚊, 捕食功能, 干扰效应, 捕食偏好

Abstract: The functional responses of Harmonia axyridis to Contarinia pyrivora, i.e., searching effects, intraspecific interference and the ability to select different prey, were studied to determine the potential controlling capacity of H. axyridis against C. pyrivora. The predacious efficiency of both adults and larvae of H. axyridis against C. pyrivora fit well with the Holling Ⅱ model. The adult H. axyridis consumed 75.19 C. pyrivor per day at the most. Larvae and adults of H. axyridis showed low searching efficiency with the increase of prey density. When the quantity of prey was fixed, daily predation of C. pyrivora decreased with the increase of H. axyridis. H. axyridis preferred C. pyrivora when both C. pyrivora and Psylla chinensis were available, with a Cain index D above 1. The above results indicated that H. axyridis is a potential natural enemy for C. pyrivora.

Key words: Harmonia axyridis, Contarinia pyrivora, functional response, interference effect, predation preference

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