期刊
PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES
卷 272, 期 1565, 页码 785-790出版社
ROYAL SOCIETY
DOI: 10.1098/rspb.2004.3002
关键词
butterfly flight; harmonic radar; linear landscape features; Aglais urticae; Inachis io
资金
- Biotechnology and Biological Sciences Research Council [BBS/E/C/00004179] Funding Source: researchfish
- Biotechnology and Biological Sciences Research Council [BBS/E/C/00004179] Funding Source: Medline
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.
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