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烟蚜茧蜂对蚜虫信息素及烟草挥发物的触角电位反应

董文霞1,2;张峰2,3;方宇凌2;张钟宁2   

  1. 1中国农业科学院茶叶研究所, 杭州 310008;2中国科学院动物
    研究所农业虫鼠害综合治理研究国家重点实验室, 北京 100080;3CABI中国项目办公室, 北京100081
  • 收稿日期:2007-05-27 修回日期:1900-01-01 出版日期:2008-04-10 发布日期:2008-04-10

Electroantennogram responses of aphid parasitoid Aphidius gifuensis to aphid pheromones and hostplant volatiles.

DONG Wen-xia1,2;ZHANG Feng2,3;FANG Yu-ling2;ZHANG Zhong-ning2   

  1. 1Tea Research Institute, Chinese Academy of Agricultural Sciences, Hang
    zhou 310008, China;2State Key Laboratory of Integrated Management of Pest
    Insects & Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing 100080, China;3CABI China Office, Beijing 100081, China
  • Received:2007-05-27 Revised:1900-01-01 Online:2008-04-10 Published:2008-04-10

摘要: 利用触角电位(EAG)技术测定了烟蚜茧蜂(Aphidius gifuensis)对蚜虫性信息素(荆芥醇和荆芥内酯)和报警信息素(反-β-法尼烯)以及烟草挥发性物质的电生理反应。结果表明:雌蜂和雄蜂对蚜虫性信息素、报警信息素、烟草挥发物均有反应,但雌雄蜂对这些化学信息物质的嗅觉敏感性存在差异,雌蜂对荆芥醇、荆芥内酯、顺-3-己烯-1-醇、反-2-己烯醛、水杨酸甲酯和里那醇的EAG反应都大于雄峰,证明雌雄蜂在利用寄主栖境中信息化学物质方面存在不同的策略,它们分别识别了不同的有关寄主的化学指纹图;烟蚜茧蜂对烟草气味组分具有不同的敏感性,对绿叶气味组分的EAG反应要强于对萜类化合物的反应,绿叶气味组分很有可能在其寻找桃蚜的过程中发挥远距离定向作用。

关键词: 热锻炼, 光化学猝灭系数, 非光化学猝灭系数, 甘蓝

Abstract: Aphidius gifuensis is a predominant parasitoid of aphid pests. To study the nature of its olfactory responses is critical to the successful implementation of biological control of aphids. In this paper, electroantennogram (EAG) technique was used to investigate the responses of A. gifuensis to the aphid sex pheromones, alarm pheromones, and host-plant (tobacco) volatiles. The results showed that both male and female A. gifuensis had responses to sex heromone components [(-)-(1R, 4aS, 7S, 7aR)-nepetalactol and (+)-(4aS, 7S, 7aR)-nepetalactone], aphid-alarm pheromone [(E)-β-farnesene], and tobacco volatiles, but their sensory perception to these semiochemicals was differed. The females were much more sensitive to nepetalactol, nepetalactone, cis-3-hexen-1-ol, (E)-2-hexenal, methyl salicylate, and (±)-linalool, suggesting that the males and females adopted different chemical strategies to host location, and perceived different chemical fingerprint in relation to host in host-finding behavior. The sensory perception of A. gifuensis to different odor components was also differed, e.g., green leaf volatiles (E)-2-hexenal, cis-3-hexen-1-ol and hexanal elicited larger EAG responses than terpenoids, indicating that the parasitoids might use green leaf volatiles as long-range cues in their habitat location.

Key words: Heat hardening, Photochemical quenching coefficient, Non-photochemical quenching coefficient, Brassica olexacea