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|Title:||Bird Navigation: what type of information does the magnetite-based receptor provide?||Contributor(s):||Wiltschko, W (author); Munro, U (author); Ford, HA (author); Wiltschko, R (author)||Publication Date:||2006||DOI:||10.1098/rspb.2006.3651||Handle Link:||https://hdl.handle.net/1959.11/581||Abstract:||Previous experiments have shown that a short, strong magnetic pulse caused migratory birds to change their headings from their normal migratory direction to an easterly direction in both spring and autumn. In order to analyse the nature of this pulse effect, we subjected migratory Australian silvereyes, Zosterops lateralis, to a magnetic pulse and tested their subsequent response under different magnetic conditions. In the local geomagnetic field, the birds preferred easterly headings as before, and when the horizontal component of the magnetic field was shifted 90° anticlockwise, they altered their headings accordingly northwards. In a field with the vertical component inverted, the birds reversed their headings to westwards, indicating that their directional orientation was controlled by the normal inclination compass. These findings show that although the pulse strongly affects the magnetite particles, it leaves the functional mechanism of the magnetic compass intact. Thus, magnetite-based receptors seem to mediate magnetic 'map'-information used to determine position, and when affected by a pulse, they provide birds with false positional information that causes them to change their course.||Publication Type:||Journal Article||Source of Publication:||Proceedings of the Royal Society B: Biological Sciences, 273(1603), p. 2815-2820||Publisher:||The Royal Society of London||Place of Publication:||United Kingdom||ISSN:||0962-8452||Field of Research (FOR):||060805 Animal Neurobiology||Peer Reviewed:||Yes||HERDC Category Description:||C1 Refereed Article in a Scholarly Journal||Statistics to Oct 2018:||Visitors: 107
|Appears in Collections:||Journal Article|
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