dc.creator | Srygley, Robert | |
dc.creator | Dudley, Robert | |
dc.creator | Oliveira, Evandro | |
dc.creator | Riveros , Andre J. | |
dc.date.accessioned | 2020-08-06T16:21:15Z | |
dc.date.accessioned | 2022-09-22T14:55:00Z | |
dc.date.available | 2020-08-06T16:21:15Z | |
dc.date.available | 2022-09-22T14:55:00Z | |
dc.date.created | 2020-08-06T16:21:15Z | |
dc.identifier | ISSN: 0003-3472 | |
dc.identifier | EISSN: 1095-8282 | |
dc.identifier | https://repository.urosario.edu.co/handle/10336/26303 | |
dc.identifier | https://doi.org/10.1016/j.anbehav.2005.04.013 | |
dc.identifier.uri | http://repositorioslatinoamericanos.uchile.cl/handle/2250/3443348 | |
dc.description.abstract | We tested whether migrating Aphrissa statira butterflies orient with a magnetic compass. We captured migrants flying over Lake Gatun, Panama, and exposed experimental butterflies to a strong magnetic field. These and unmanipulated control butterflies were released back over the lake. Experimental butterflies had a more dispersed pattern of orientation than control butterflies. The average direction adopted was northeast, 160° anticlockwise to the natural migratory direction. Unmanipulated control butterflies adopted two diametrically opposed orientations: one shifted 33° clockwise, and another 147° anticlockwise, to the migratory direction. Control and experimental butterflies differed in that some controls oriented towards the migratory direction. These differences in orientation support the hypothesis of a sense for magnetic orientation cues. Unmanipulated butterflies released over the lake when the sky was completely overcast were significantly oriented towards their direction before capture (187° and 203°, respectively), further supporting the magnetic compass hypothesis. In a third experiment, we obstructed sun compass cues and reversed the horizontal component of the local geomagnetic field to position magnetic north towards the geographical south pole within a flight arena into which we released individual butterflies. Experimental butterflies experiencing the reversed magnetic field oriented on average 180° opposite to their natural migratory direction. Control butterflies, for which the position of magnetic north was unaltered, were oriented both towards and 180° opposite to the natural migratory direction. This difference between orientations of control and experimental butterflies also supports the hypothesis of a sense for magnetic orientation cues. | |
dc.language | eng | |
dc.publisher | Elsevier | |
dc.relation | Animal Behaviour, ISSN: 0003-3472;EISSN: 1095-8282, Vol.71, No.1 (2006-01); pp.183-191 | |
dc.relation | https://www.sciencedirect.com/science/article/abs/pii/S0003347205003593?via%3Dihub | |
dc.relation | https://repository.si.edu/bitstream/handle/10088/18790/stri_Srygley_Dudley_Oliveiras_and_Riveros_2006.pdf | |
dc.relation | 191 | |
dc.relation | No. 1 | |
dc.relation | 183 | |
dc.relation | Animal Behaviour, The British Journal of Animal Behaviour | |
dc.relation | Vol. 71 | |
dc.rights | info:eu-repo/semantics/restrictedAccess | |
dc.rights | Restringido (Acceso a grupos específicos) | |
dc.source | Animal Behaviour, The British Journal of Animal Behaviour | |
dc.source | instname:Universidad del Rosario | |
dc.source | reponame:Repositorio Institucional EdocUR | |
dc.title | Experimental evidence for a magnetic sense in Neotropical migrating butterflies (Lepidoptera: Pieridae) | |
dc.type | article | |