| 刘洁1，骆有庆1，俞琳锋1，王锦林2，宋东冰3，宗世祥1*.麦蒲螨对黑沙蒿主要害虫寄主选择行为研究[J].植物保护,2015,41(6):109-112. |
| 麦蒲螨对黑沙蒿主要害虫寄主选择行为研究 |
| Studies on host selection behavior of Pyemotes tritici of Artemisia ardosica |
| 投稿时间：2014-09-10 修订日期：2014-09-28 |
| DOI： |
| 中文关键词: 麦蒲螨 黑沙蒿害虫 不同虫龄 寄主选择 |
| 英文关键词:Pyemotes tritici, Artemisia woodborers, different instars, host selection |
| 基金项目:“十二五”国家科技支撑计划项目“生态林重大病虫害监测预警与防控技术研究”(2012BAD9B07) |
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| 中文摘要: |
| 麦蒲螨[Pyemotes tritici (LaGreze-Fossat et Montagne)]是黑沙蒿主要钻蛀性害虫沙蒿大粒象(Adosomus sp.)和沙蒿尖翅吉丁(Sphenoptera sp.)的重要寄生性天敌。为明确麦蒲螨的寄主选择行为，本文分别研究了麦蒲螨对黑沙蒿4种钻蛀性害虫、同一寄主不同发育阶段、受害黑沙蒿根部以及害虫虫粪的选择行为。结果表明，麦蒲螨对4种害虫以及同种害虫不同龄期幼虫有明显的选择现象，其中，对沙蒿尖翅吉丁的趋向性相对最高，沙蒿蛀茎蛾次之，沙蒿大粒象相对较小；相对于寄主的初孵幼虫，麦蒲螨对其老熟幼虫和蛹的趋向性更为强烈；不同种类害虫幼虫对麦蒲螨的寄主定位起到重要作用，而不同种害虫的虫粪对麦蒲螨的寄主选择行为也有一定的作用。相比受害黑沙蒿而言，健康黑沙蒿对麦蒲螨有明显的驱避现象。研究结果为揭示麦蒲螨对黑沙蒿不同钻蛀性害虫的寄主偏好性，利用麦蒲螨进行黑沙蒿主要害虫的生物防治提供了理论依据。 |
| 英文摘要: |
| Pyemotes tritici (Newport) is one of the important parasitoids of the woodborers such as Adosopius sp. and Sphenoptera sp. associated with Artemisia ordosica Krasch. The host selection behavior of P. tritici to 4 species of Artemisia ordosica woodborers, different larval stages, the roots of damaged A. ordosica and frass of Artemisia ordosica woodborers was studied. The results showed that there was an obvious selection behavior of P. tritici to different types and ages of pest larvae. P. tritici preferred to parasitize Sphenoptera sp., and it had a stronger tendency to parasitize mature larvae and pupae than newly hatched larvae. The types of pest larvae played an important role in the host location behavior of P. tritici, and frass of different species of woodborers also had a role on the host selection of P. tritici. Compared with the victims of A. ordosica, P. tritici obviously avoided the healthy A. ordosica. The results can provide a theoretical support for studying host selection behavior of 4 species of Artemisia woodborers and biocontrol applications of P. tritici |
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