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中国生物防治学报 ›› 2024, Vol. 40 ›› Issue (3): 550-558.DOI: 10.16409/j.cnki.2095-039x.2024.01.005

• 研究论文 • 上一篇    

海岛小花蝽对茶黄蓟马捕食作用及选择偏好

李金磊1,2, 王建赟1, 韩姗妮1,3, 符悦冠1, 叶政培1, 周世豪2, 韩冬银1   

  1. 1. 中国热带农业科学院环境与植物保护研究所/农业农村部热带作物有害生物综合治理重点实验室/海南省热带农业有害生物监测与控制重点实验室, 海口 571101;
    2. 海南大学林学院, 海口 570228;
    3. 海南大学植物保护学院, 海口 570228
  • 收稿日期:2023-04-13 发布日期:2024-06-07
  • 通讯作者: 韩冬银,副研究员,Email:hdy426@163.com。
  • 作者简介:李金磊,硕士研究生,E-mail:jlli1013@163.com

Predation and Preference of Orius maxidentex Ghauri on Scirtothrips dorsalisHood

LI Jinlei1,2, WANG Jianyun1, HAN Shanni1,3, FU Yueguan1, YE Zhengpei1, ZHOU Shihao2, HAN Dongyin1   

  1. 1. Environment and Plant Protection Institute, Chinese Academy of Tropical Agricultural Sciences/Key Laboratory of Integrated Pest Management on Tropical Crops, Ministry of Agriculture and Rural Affairs/Hainan Key Laboratory for Monitoring and Control of Tropical Agricultural Pests, Haikou 571101, China;
    2. College of Forestry, Hainan University, Haikou 570228, China;
    3. College of Plant Protection, Hainan University, Haikou 570228, China
  • Received:2023-04-13 Published:2024-06-07
  • Contact: 海南省重点研发项目(ZDYF2021XDNY140);中国热带农业科学院“揭榜挂帅”项目(1630042022007);国家重点研发计划(2017YFD0202100)
  • Supported by:
    10.16409/j.cnki.2095-039x.2024.01.005

摘要: 为评价海岛小花蝽Orius maxidentex Ghauri对茶黄蓟马Scirtothrips dorsalisHood的控害潜能,在室内测定了海岛小花蝽对茶黄蓟马的捕食能力和捕食选择性。结果表明:海岛小花蝽1龄若虫不取食茶黄蓟马,2龄若虫可取食少量的茶黄蓟马1龄和2龄若虫,3龄若虫至成虫均可取食茶黄蓟马各龄若虫及成虫;海岛小花蝽3龄若虫至成虫对茶黄蓟马2龄若虫和成虫的捕食量由大到小均依次为5龄若虫,成虫,4龄若虫,3龄若虫,其中5龄若虫最大,取食量分别为茶黄蓟马2龄若虫31.60头/d、成虫30.80头/d;海岛小花蝽3龄若虫至成虫对茶黄蓟马的捕食作用均符合Holling Ⅱ功能反应模型,捕食量均随着猎物密度的增加而升高,搜寻效应均随着猎物密度增加而下降;海岛小花蝽对茶黄蓟马干扰反应符合Hasse Ⅱ模型方程,当茶黄蓟马密度不变时,随着海岛小花蝽自身密度的增加,单头捕食量逐渐降低;海岛小花蝽3龄若虫至成虫均对茶黄蓟马1龄若虫的喜好指数Ci>0,对茶黄蓟马成虫喜好指数Ci<0,表明其对茶黄蓟马低龄若虫有较高的捕食偏好。本研究结果表明海岛小花蝽对茶黄蓟马具有较好的防控潜能。

关键词: 海岛小花蝽, 茶黄蓟马, 捕食功能反应, 干扰反应, 捕食偏好

Abstract: The control potential of Orius maxidentex Ghauri against Scirtothrips dorsalisHood was evaluated through investigating the predation ability and selectivity of O. maxidentex in laboratory. The results showed that the first instar nymphs of O. maxidentex did not predate on S. dorsalis, whereas the second instar nymphs predated on a small number of the first and second instars of S. dorsalis. From the third instar nymphs to adults, O. maxidentex predated on all stages of S. dorsalis. The predation of O. maxidentexon the second instar nymphs and adults of S. dorsalisranked from high to low was fifth instars, adults, fourth instars, and third instars. The daily maximum predation of the fifth instar O. maxidentex on the 2nd instar nymphs and adults of S. dorsalis were 31.60/d and 30.80/d, respectively. The predation of O. maxidentex from the third instar nymphs to adultson S. dorsalis fitted well with the Holling Ⅱ functional response model. The predation increased with the increase of prey density, and the search efficiency decreased with the increase of prey density. The disturbance response was consistent with the Hasse Ⅱ model equation.At a certain S. dorsalis density, the predation of an individual O. maxidentex decreased gradually with the increase of its self-density. The preference coefficient of O. maxidentex from the 3rd instar nymphs to adults for the first instar S. dorsalis nymphs was greater than 0 (Ci>0), whereas that for S. dorsalisadults was smaller than 0(Ci<0). The results of present study show that O. maxidentex prefer to prey on the young nymphs of S. dorsalis.

Key words: Orius maxidentex, Scirtothrips dorsalis, functional response, interference effect, predation preference

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