The cerebellar anatomy of red junglefowl and white leghorn chickens: insights into the effects of domestication on the cerebellum

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dc.contributor.authorRacicot, Kelsey J.
dc.contributor.authorPopic, Christina
dc.contributor.authorCunha, Felipe
dc.contributor.authorWright, Dominic
dc.contributor.authorHenriksen, Christina
dc.contributor.authorIwaniuk, Andrew N.
dc.date.accessioned2024-12-23T18:36:51Z
dc.date.available2024-12-23T18:36:51Z
dc.date.issued2021
dc.descriptionOpen access article. Creative Commons Attribution 4.0 International license (CC BY 4.0) applies
dc.description.abstractDomestication is the process by which wild organisms become adapted for human use. Many phenotypic changes are associated with animal domestication, including decreases in brain and brain region sizes. In contrast with this general pattern, the chicken has a larger cerebellum compared with the wild red junglefowl, but what neuroanatomical changes are responsible for this difference have yet to be investigated. Here, we quantified cell layer volumes, neuron numbers and neuron sizes in the cerebella of chickens and junglefowl. Chickens have larger, more folded cerebella with more and larger granule cells than junglefowl, but neuron numbers and cerebellar folding were proportional to cerebellum size. However, chickens do have relatively larger granule cell layer volumes and relatively larger granule cells than junglefowl. Thus, the chicken cerebellum can be considered a scaled-up version of the junglefowl cerebellum, but with enlarged granule cells. The combination of scaling neuron number and disproportionate enlargement of cell bodies partially supports a recent theory that domestication does not affect neuronal density within brain regions. Whether the neuroanatomical changes we observed are typical of domestication or not requires similar quantitative analyses in other domesticated species and across multiple brain regions.
dc.description.peer-reviewYes
dc.identifier.citationRacicot, K. J., Popic, C., Cunha, F., Wright, D., Henriksen, R., & Iwaniuk, A. N. (2021). The cerebellar anatomy of red junglefowl and white leghorn chickens: Insights into the effects of domestication on the cerebellum. Royal Society Open Science, 8(10), Article 211002. https://doi.org/10.1098/rsos.211002
dc.identifier.urihttps://hdl.handle.net/10133/6965
dc.language.isoen
dc.publisherRoyal Society
dc.publisher.departmentDepartment of Neuroscience
dc.publisher.facultyArts and Science
dc.publisher.institutionUniversity of Lethbridge
dc.publisher.institutionLinkoping University
dc.publisher.urlhttps://doi.org/10.1098/rsos.211002
dc.subjectDomestication
dc.subjectBrain
dc.subjectCerebellum
dc.subjectStereology
dc.subjectAllometry
dc.subjectNeuroanatomical
dc.subjectCerebellar anatomy
dc.subjectCerebellar enlargement
dc.subject.lcshRed junglefowl
dc.subject.lcshBrain--Research
dc.subject.lcshChickens--Research
dc.titleThe cerebellar anatomy of red junglefowl and white leghorn chickens: insights into the effects of domestication on the cerebellum
dc.typeArticle
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