Avian orientation: the pulse effect is mediated by the magnetite receptors in the upper beak

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dc.contributor.author Wiltschko, W
dc.contributor.author Munro, UH
dc.contributor.author Ford, H
dc.contributor.author Wiltschko, R
dc.date.accessioned 2010-05-28T09:42:35Z
dc.date.issued 2009-01
dc.identifier.citation Proceedings Of The Royal Society Of London Series..., 2009, 276 (1665), pp. 2227 - 2232
dc.identifier.issn 0962-8452
dc.identifier.other C1 en_US
dc.identifier.uri http://hdl.handle.net/10453/8335
dc.description.abstract Migratory silvereyes treated with a strong magnetic pulse shift their headings by approximately 908, indicating an involvement of magnetite-based receptors in the orientation process. Structures containing superparamagnetic magnetite have been described in the inner skin at the edges of the upper beak of birds, while single-domain magnetite particles are indicated in the nasal cavity. To test which of these structures mediate the pulse effect, we subjected migratory silvereyes, Zosterops l. lateralis, to a strong pulse, and then tested their orientation, while the skin of their upper beak was anaesthetized with a local anaesthetic to temporarily deactivate the magnetite-containing structures there. After the pulse, birds without anaesthesia showed the typical shift, whereas when their beak was anaesthetized, they maintained their original headings. This indicates that the superparamagnetic magnetite-containing structures in the skin of the upper beak are most likely the magnetoreceptors that cause the change in headings observed after pulse treatment.
dc.publisher Royal Soc
dc.relation.isbasedon 10.1098/rspb.2009.0050
dc.subject migratory orientation, magnetoreception, magnetite, magnetic pulse, magnetite-containing structures, Australian Silvereyes
dc.subject migratory orientation; magnetoreception; magnetite; magnetic pulse; magnetite-containing structures; Australian Silvereyes
dc.title Avian orientation: the pulse effect is mediated by the magnetite receptors in the upper beak
dc.type Journal Article
dc.parent Proceedings Of The Royal Society Of London Series...
dc.journal.volume 1665
dc.journal.volume 276
dc.journal.number 1665 en_US
dc.publocation London, UK en_US
dc.identifier.startpage 2227 en_US
dc.identifier.endpage 2232 en_US
dc.cauo.name SCI.Faculty of Science en_US
dc.conference Verified OK en_US
dc.for 0608 Zoology
dc.personcode 0000017852 en_US
dc.personcode 960091 en_US
dc.personcode 0000020257 en_US
dc.personcode 0000020258 en_US
dc.percentage 100 en_US
dc.classification.name Zoology en_US
dc.classification.type FOR-08 en_US
dc.edition en_US
dc.custom en_US
dc.date.activity en_US
dc.location.activity ISI:000265896700011 en_US
dc.location.activity ISI:000265896700011
dc.description.keywords migratory orientation; magnetoreception; magnetite; magnetic pulse; magnetite-containing structures; Australian Silvereyes en_US
dc.description.keywords migratory orientation
dc.description.keywords magnetoreception
dc.description.keywords magnetite
dc.description.keywords magnetic pulse
dc.description.keywords magnetite-containing structures
dc.description.keywords Australian Silvereyes
pubs.embargo.period Not known
pubs.organisational-group /University of Technology Sydney
pubs.organisational-group /University of Technology Sydney/Faculty of Science
pubs.organisational-group /University of Technology Sydney/Faculty of Science/School of the Environment


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