双尾新小绥螨对五种寄主植物不同 受害后挥发物的趋性
Preferences of Neoseiulus bicaudus Wainstein for five host plants odours
董 芳；张燕南； 陈 静；张建萍
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DOI：10.7679/j.issn.2095-1353.2018.056
作者单位：新疆绿洲农业病虫害治理与植保资源利用自治区高校重点实验室/新疆建设兵团绿洲生态农业省部共建 国家重点实验室培训基地/石河子大学农学院，石河子 832000；绵阳师范学院生命科学与技术学院，绵阳 621006
中文关键词：双尾新小绥螨，挥发物，寄主选择，嗅觉反应
英文关键词：Neoseiulus bicaudus, volatiles, plants selectivity, olfactory response
中文摘要：
【目的】 为明确不同寄主植物挥发物对双尾新小绥螨Neoseiulus bicaudus Wainstein的影响。【方法】 采用Y-型嗅觉仪，观测双尾新小绥螨对不同处理（健康植株、机械损伤植株、去叶螨受害植株、带叶螨受害植株）的5种寄主植物（大豆、棉花、番茄、茄子、黄瓜）的趋性差异。【结果】 双尾新小绥螨对不同处理的5种寄主植物的趋性强弱依次为：带叶螨受害叶>去叶螨受害叶>机械损伤叶>健康植株叶>洁净空气。5种螨害植株间比较时，每组均为螨害大豆的引诱率最高，且显著高于茄子，极显著高于番茄和黄瓜，但与棉花无显著性差异。【结论】 双尾新小绥螨在搜寻猎物过程中，不同寄主植物的挥发物对其选择寄主的过程起到重要作用。
英文摘要：
[Objectives] To investigate the preferences of Neoseiulus bicaudus Wainstein for different host plants and their volatiles. [Methods] The relative preferences of N. bicaudus for volatiles of five host plants (bean, cotton, tomato, eggplant, cucumber) subject to different treatments (healthy plants, mechanically damaged plants, infested with spider mites and infested with other mites) were investigated in a Y-tube olfactometer. [Results] Preferences of Neoseiulus bicaudus for volatiles of the five host plants can be ranked as follows: infested with spider mites > infested with other mites > mechanically damaged leaves > healthy leaves > clean air. Volatiles from mite-infested bean and cotton plants were significantly more attractive than those of eggplant, tomato and cucumber. [Conclusion] The volatiles of different host plants play an important role in the process of host species identification and the selection of individual host plants.