Tracking butterfly flight paths across the landscape with harmonic radar
Tracking butterfly flight paths across the landscape with harmonic radar
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DOI：
10.1098/rspb.2004.3002
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发表时间：
2005-04-22
影响因子：
4.7
通讯作者：
Osborne, JL
中科院分区：
文献类型：
--
作者：
Cant, ET;Smith, AD;Osborne, JL
第一次，五种蝴蝶的飞行路径成功地跟踪使用谐波雷达在农业景观。到目前为止，蝴蝶的移动性主要是通过视觉观察和标记重捕获实验来研究的。将一个轻型雷达应答器附着在蝴蝶的胸部并没有显着影响行为或移动性。分析了轨迹的直线度、持续时间、位移、地速、觅食以及线性景观特征对飞行方向的影响。两种主要风格的轨道被确定为：（A）快速线性飞行和（B）较慢的非线性飞行，涉及一段时间的觅食和/或循环部分的飞行。这些环潜在地执行定向功能，并且通常与饲料区域相关联。在饲料的情况下，线性功能没有提供飞行方向的指导作用，只有密集的树木被认为是障碍。这些结果为非随机扩散和这些物种的感知范围为100-200米提供了初步的支持。本研究为今后蝴蝶的迁移和扩散研究提供了一种具有重要价值的方法。
For the first time, the flight paths of five butterfly species were successfully tracked using harmonic radar within an agricultural landscape. Until now, butterfly mobility has been predominantly studied using visual observations and mark-recapture experiments. Attachment of a light-weight radar transponder to the butterfly's thorax did not significantly affect behaviour or mobility. Tracks were analysed for straightness, duration, displacement, ground speed, foraging and the influence of linear landscape features on flight direction. Two main styles of track were identified: (A) fast linear flight and (B) slower nonlinear flights involving a period of foraging and/or looped sections of flight. These loops potentially perform an orientation function, and were often associated with areas of forage. In the absence of forage, linear features did not provide a guiding effect on flight direction, and only dense treelines were perceived as barriers. The results provide tentative support for non-random dispersal and a perceptual range of 100-200 m for these species. This study has demonstrated a methodology of significant value for future investigation of butterfly mobility and dispersal.