The effects of domestication and artificial selection on brain anatomy of the domestic chicken (Gallus gallus domesticus) and domestic pigeon (Columba livia)

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dc.contributor.authorRacicot, Kelsey J.
dc.contributor.authorUniversity of Lethbridge. Faculty of Arts and Science
dc.contributor.supervisorIwaniuk, Andrew N.
dc.date.accessioned2022-10-14T18:01:55Z
dc.date.available2022-10-14T18:01:55Z
dc.date.issued2022
dc.degree.levelMastersen_US
dc.description.abstractDomestication occurs due to captivity and artificially selecting animals for human benefit. One effect of domestication is a reduction in brain and brain region sizes of domesticated animals compared with their wild ancestors. However, little is known about the neuroanatomical effects of domestication on the world’s most common birds: chickens (Gallus gallus) pigeons (Columba livia). This study revealed that chickens and junglefowl share similar telencephalon composition, but they both differ significantly from wild galliform species. In addition, we show that homing pigeons have larger olfactory bulbs than show breeds, but not sporting or feral pigeons, suggesting that all free-flying pigeons might use olfactory based navigation. Taken together, these results revealed that captive breeding can exert complex effects telencephalon anatomy and how artificial selection can alter the size of sensory regions in the brain.en_US
dc.description.sponsorshipNSERC CFIen_US
dc.identifier.urihttps://hdl.handle.net/10133/6343
dc.language.isoen_CAen_US
dc.proquest.subject0317en_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)
dc.subjectCaptive breedingen_US
dc.subjectArtificial selectionen_US
dc.subjectBrain anatomy
dc.subjectDomestic chicken
dc.subjectDomestic pigeon
dc.subjectGallus gallus domesticus
dc.subjectColumba livia
dc.subject.lcshDomestication
dc.subject.lcshChickens--Research
dc.subject.lcshPigeons--Research
dc.subject.lcshJunglefowl--Research
dc.subject.lcshGrouse--Research
dc.subject.lcshDissertations, Academic
dc.titleThe effects of domestication and artificial selection on brain anatomy of the domestic chicken (Gallus gallus domesticus) and domestic pigeon (Columba livia)en_US
dc.typeThesisen_US
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