光周期对国槐尺蠖生长发育状况的影响
The effect of the photoperiod on the growth and development of Semiothisa cinereari
柳丽婷1** ， 苏宝玲1** ，刘广纯1 ，易正鑫1 ，佟忠勇2
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DOI：
作者单位：1.沈阳大学生物与环境工程学院 沈阳 110044； 2.沈阳铁西森林公园 沈阳 110026
中文关键词：国槐尺蠖，光周期，发育历期，羽化
英文关键词： Semiothisa cinerearia, photoperiod,developmental periods, eclosion
中文摘要： 在温度(25±1)℃，RH 65%~75%条件下，对国槐尺蠖Semiothisa cinerearia Bremer et Grey各龄幼虫分别采用0∶24、10∶14、12∶12、14∶10、1∶8 5种光周期处理。结果表明，以14∶10处理的国槐尺蠖1~5龄幼虫历期最短；以16∶8处理的幼虫发育历期最短，且随着光照时间的增加，幼虫发育历期逐渐缩短；不同光周期对于6~7龄幼虫存在显著的影响，但是对于1~5龄影响不大。成虫53%~56%在夜间羽化，越冬蛹在8~14 h光照范围内，随光照长度增加发育历期延长，在14~16 h光照范围内，历期随光照延长而缩短。以0∶24处理的蛹羽化率最高，发育历期最短。
英文摘要： The instars of Semiothisa cinerearia Bremer et Grey larva were exposed to 5 different light to dark (L∶D) photoperiods; 0∶24, 10∶14, 12∶12, 14∶10, 16∶8 at (25±1)℃ and RH 65%-75% in a laboratory. The duration of larval development was the shortest at L∶D=16∶8 and the duration of the 1-5 instar larval period was shortest at L∶D=14∶10. The greater the exposure to light the faster larvae developed. Variation in photoperiod had a significant effect on the developmental period of 6-7 instar larvae but not 1-5 instar larvae. Most eclosion occurred in the evening (55 %). Exposure to 8-14 h of light extended the pupal overwintering period but this decreased when pupae were exposed to 14-16 h of light. The percentage of moth emergence was highest, and the duration of pupae shortest, under an L∶D ratio of 0∶24.