Effect of photoperiod and temperature on the induction of diapause in a Japanese strain of Aphidoletes aphidimyza(Diptera : Cecidomyiidae)
Effect of photoperiod and temperature on the induction of diapause in a Japanese strain of Aphidoletes aphidimyza(Diptera : Cecidomyiidae)
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光周期和温度对日本蚜蝇品系（双翅目：绦虫科）滞育诱导的影响
DOI：
10.1007/s13355-011-0084-4
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发表时间：
2012
影响因子：
1.3
通讯作者：
Nakamura T
中科院分区：
文献类型：
--
作者：
Yamane M;Yano E;Matsumoto Y;Yoshioka S;Kawai T;Toyonishi H;Nakamura T
食蚜瘿蚊Aphidoleaphidimyza（Rondani）（双翅目：瘿蚊科）是蚜虫的优势天敌，在许多国家已被用作温室蚜虫的生物防治剂。由于滞育中的发育停滞降低了天敌的有效性，我们研究了光周期和温度对日本A.在实验室条件下观察不同日长条件下的滞育诱导。在20°C下，诱导滞育的临界日长为12.7h。在30°C下，即使使用的光周期为11 L 13 D，滞育的发生也被完全阻止。在维持临界日长（12.7L11.3D）的条件下，研究了温度变化对滞育诱导的影响。在20/16或25/16°C的交替温度下，田间和温室条件下的滞育发生率均为100%，同时维持12.7 h的临界日长。日本株A.蚜虫对进入滞育敏感的时期为未结茧的1 ~ 3龄幼虫期。其卵似乎对滞育诱导不敏感。我们的研究结果表明，持续短日照条件至少需要四天诱导滞育在日本株的A。蚜虫
The aphidophagous gall midgeAphidoletes aphidimyza(Rondani) (Diptera: Cecidomyiidae), a dominant natural enemy of aphids, has been used as a biological control agent in many countries to control aphids in greenhouses. As developmental arrest in diapause lowers the effectiveness of natural enemies, we studied the effect of photoperiod and temperature on the incidence of diapause in a Japanese strain ofA. aphidimyzaby examining diapause induction under different day-length conditions in the laboratory. The critical day length for diapause induction was determined to be 12.7 h at 20°C. Diapause incidence was completely prevented at 30°C even though the photoperiod used was 11L13D. We also examined diapause induction under changing temperature conditions while maintaining the critical day length (12.7L11.3D). Diapause incidence was 100% in both field and greenhouse conditions under alternating temperatures of 20/16 or 25/16°C while the critical day length of 12.7 h was maintained. The Japanese strain ofA. aphidimyzawas sensitive to diapause entry from the first to the third noncocooned instar larval stages. Its eggs do not seem to be sensitive to diapause induction. Our results suggest that constant short-day conditions for at least four days are needed to induce diapause in the Japanese strain ofA. aphidimyza.