稻纵卷叶螟飞行行为特征
The character of flight in the rice leaf roller,Cnaphalocrocis medinalis(Guenée) (Lepidoptera : Pyralidae)
潘攀，罗礼智，江幸福，张蕾
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DOI：
作者单位：中国农业科学院植物保护研究所，植物病虫害生物学国家重点实验室，北京 100193
中文关键词： 稻纵卷叶螟；被动飞行能力；自主飞行意愿
英文关键词：Cnaphalocrocis medinalis; flight capacity; flight willingness
中文摘要：
本文在室内利用昆虫飞行磨系统和自主飞行监测系统研究了稻纵卷叶螟的被动飞行能力和主动飞行意愿。结果表明，羽化后1-4日龄的稻纵卷叶螟成虫均具有较强的飞行能力，但不同日龄成虫的飞行能力差异显著。其中1日龄雌蛾飞行距离、时间和速度均显著低于2日龄，以羽化后2日龄飞行能力最强，4日龄的飞行距离和时间均开始下降，但差异不显著。同时，无论是从飞行距离还是从飞行时间的角度，强、中、弱飞行个体的比例均随日龄而呈现明显变化，以2日龄强飞个体比率最高，1日龄的最低；但是雄成虫各日龄飞行能力之间无显著差异。不同时长吊飞结果表明雌蛾能进行一次性持续飞行的最大有效时长为12h，超出此范围雌蛾的飞行距离和时间均不再延长。稻纵卷叶螟的自主飞行活动频次在进入暗期后显著上升，并且整个飞行活跃期集中在暗期，白天几乎无飞行活动；此外，1日龄的自主飞行活跃度显著高于其余日龄，可能与稻纵卷叶螟此时期具有较强的飞行意愿有关。以上的研究结果丰富了稻纵卷叶螟的迁飞生物学理论，对改善与提高其预测预报技术和水平具有重要的理论和实际意义。
英文摘要：In this study, we examined the passive flight capacity and flight willingness of the rice leaf roller Cnaphalocrocis medinalis (Guenée) by flight mill and positive flight monitoring system. Our results indicated that flight capacity of adult C. medinalis was strong and there exist obvious variance among moths on day 1-4 after emergence. moths in day 1 were all obviously weaker than that on day 2. On day 4 after emergence, flight distance and duration both decreased, but the difference was not significant. In male adults, however, there were no obvious differences in flight capacity among 1-4 d. And we hypothesized that migratory flight of moth for one night was less than 12h because flight capacity in 18h tethered group was not significantly higher than that in 12h group. Positive flight monitoring test revealed that the flight diurnal rhythm and it directly proved that adult rice leaf roller flight during dark period. The strongest flight willingness time of C. medinalis moth may be day 1 after emergence. These results expand our awareness on migratory biology of C. medinalis, as well as providing practical information toward establishing effective population monitoring and forecasting projects for this species