Artificially adaptive neuroanatomical specialisations in domestic pigeon (columba livia) breeds

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dc.contributor.authorGuyonnet, Audrey E. M.
dc.contributor.authorUniversity of Lethbridge. Faculty of Arts and Science
dc.contributor.supervisorIwaniuk, Andrew N.
dc.date.accessioned2022-10-14T18:41:58Z
dc.date.available2022-10-14T18:41:58Z
dc.date.issued2022
dc.degree.levelMastersen_US
dc.description.abstractThe domestication of wild Rock Pigeons (Columba livia) has formed many breeds unique in behaviour, such as homing in homing pigeons and sexual displaying in cropper pigeons. Specialised behaviours are likely facilitated by concomitant changes in regional brain anatomy. Here we test how selection for behaviour is associated with neuroanatomical variation by comparing hippocampal formation (HF) and septal volume and neuron number across domestic and feral pigeons. We found significant neuroanatomical variation among breeds. Cropper pigeons have larger septum volumes, whereas homing pigeons have larger HF volumes and relatively smaller septum volumes. Furthermore, homing pigeons have significantly more HF neurons than most breeds, and twice as many HF neurons as feral pigeons, a finding we attribute to selection for homing. Cropper pigeons have more HF and septal neurons than most other breeds. These results suggest artificial selection for behaviour might be accompanied by significant changes in neuron number and density.en_US
dc.description.sponsorshipNSERC CFI uLethbridgeen_US
dc.identifier.urihttps://hdl.handle.net/10133/6345
dc.language.isoen_CAen_US
dc.proquest.subject0317en_US
dc.proquest.subject0306en_US
dc.proquest.subject0602en_US
dc.proquestyesYesen_US
dc.publisherLethbridge, Alta. : University of Lethbridge, Dept. of Neuroscienceen_US
dc.publisher.departmentDepartment of Neuroscienceen_US
dc.publisher.facultyArts and Scienceen_US
dc.relation.ispartofseriesThesis (University of Lethbridge. Faculty of Arts and Science)en_US
dc.subjectNeuroscienceen_US
dc.subjectBehaviouren_US
dc.subjectEthologyen_US
dc.subjectAdaptationen_US
dc.subjectNeuroanatomical
dc.subjectArtificial selection
dc.subjectRock pigeons
dc.subjectColumba livia
dc.subjectDomestic pigeon breeds
dc.subject.lcshDomestication
dc.subject.lcshPigeons--Behavior
dc.subject.lcshDissertations, Academic
dc.titleArtificially adaptive neuroanatomical specialisations in domestic pigeon (columba livia) breedsen_US
dc.typeThesisen_US
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