Host diapause status and host diets augmented with cryoprotectants enhance cold hardiness in the parasitoid Nasonia vitripennis

文献类型： 外文期刊

第一作者： Li, Yuyan

作者： Li, Yuyan;Zhang, Lisheng;Chen, Hongyin;Li, Yuyan;Zhang, Lisheng;Chen, Hongyin;Li, Yuyan;Zhang, Qirui;Denlinger, David L.;Li, Yuyan;Zhang, Qirui;Denlinger, David L.;Li, Yuyan;Zhang, Qirui;Denlinger, David L.

作者机构：

关键词： Tritrophic effects;Cold tolerance;Proline;Alanine;Glycerol

期刊名称：JOURNAL OF INSECT PHYSIOLOGY （ 影响因子：2.354； 五年影响因子：3.045 ）

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收录情况： SCI

摘要： Boosting cold hardiness in parasitoids is a goal that is particularly attractive for increasing shelf life and shipment of biological control agents. In the experiments reported here we use the parasitoid Nasonia vitripennis as a model to evaluate manipulations that may be capable of enhancing the wasp's cold tolerance. We altered the parasitoid's cold tolerance by manipulating the wasp's diapause status, the diapause status of the host fly (Sarcophaga crassipalpis), and the diet of the host. Larval diapause in N. vitripennis dramatically increased cold tolerance and the diapause status of the host also exerted a positive, although less dramatic, effect. Augmenting the host fly's diet with supplements of putative cryoprotectants (alanine, proline and glycerol) enhanced cold tolerance in parasitoids that fed on the flies, thus indicating a tri-trophic effect on parasitoid cold tolerance. The most pronounced improvement in cold tolerance was noted in parasitoids fed on fly hosts that had received a diet augmented with proline. These results suggest mechanisms that could be exploited for enhancement of cold tolerance in parasitoids of commercial interest. (C) 2014 Elsevier Ltd. All rights reserved.

分类号： Q965

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