Role of photoperiod and temperature in diapause induction of endoparasitoid wasp Microplitis mediator (Hymenoptera : Braconidae)
文献类型: 外文期刊
第一作者: Li, Wenxiang
作者: Li, Wenxiang;Liu, Xiaoxia;Zhang, Qingwen;Li, Wenxiang;Li, Jiancheng;Lu, Ziyun;Pan, Wenliang;Coudron, Thomas A.
作者机构:
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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