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Role of photoperiod and temperature in diapause induction of endoparasitoid wasp Microplitis mediator (Hymenoptera : Braconidae)

文献类型： 外文期刊

作者： Li, Wenxiang 1 ; Li, Jiancheng 2 ; Coudron, Thomas A. 3 ; Lu, Ziyun 2 ; Pan, Wenliang 2 ; Liu, Xiaoxia 1 ; Zhang, Qing 1 ;

作者机构： 1.China Agr Univ, Dept Entomol, Coll Agron & Biotech, Beijing 100094, Peoples R China

2.Hebei Acad Agr & Forestry Sci, Integrated Pest Management Ctr Hebei Prov, Inst Plant Protect, Baoding 071000, Peoples R China

3.ARS, USDA, Biol Control Insects Res Lab, Columbia, MO 65203 USA

关键词： Microplitis mediator;diapause induction;photoperiod;temperature

期刊名称：ANNALS OF THE ENTOMOLOGICAL SOCIETY OF AMERICA （ 影响因子：2.099； 五年影响因子：1.884 ）

ISSN： 0013-8746

年卷期： 2008 年 101 卷 3 期

页码：

收录情况： SCI

摘要： Diapause in Microplitis mediator Haliday (Hymenoptera: Braconidae) is manifested during the pupal stage and normally occurs during the winter season because of a photoperiodic response that is highly dependent on temperature. No diapause was observed at temperatures above 20 degrees C regardless of the photoperiod. Only a small part of the population entered diapause at 20 degrees C under short daylengths of light:dark 8:16-12:12. In contrast, when larvae were exposed to 16, 18, and 20 degrees C combined with a photoperiod of 10:14, the percentages of parasitoids that entered pupal diapause was 97.9, 87.8, and 26.2%, respectively. Critical photoperiods were determined to be 7.03:16.97 and 12.21:11.79 at 16 degrees C and 6.75:17.25 and 12.03:11.97 at 18 degrees C. The second instar of the parasitoid was the most sensitive to diapause induction for the photoperiods and temperatures tested.

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[1]Seasonal cues mediate host behaviour modification and cocoon polymorphism in Microplitis mediator (Hymenoptera: Braconidae). Zhang, Jing,Liu, Xiao-Xia,Zhang, Qing-Wen,Michaud, J. P.,Li, Jian-Cheng,Luo, Shu-Ping.

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