Show simple item record

dc.contributor.authorMcGrath, Kate
dc.contributor.authorEriksen, Amandine B.
dc.contributor.authorGarcía-Martínez, Daniel
dc.contributor.authorGalbany, Jordi
dc.contributor.authorGómez-Robles, Aida
dc.contributor.authorMassey, Jason S.
dc.contributor.authorFatica, Lawrence M.
dc.contributor.authorGlowacka, Halszka
dc.contributor.authorArbenz-Smith, Keely
dc.contributor.authorMuvunyi, Richard
dc.contributor.authorStoinski, Tara S.
dc.contributor.authorranfield, Michael R. C
dc.contributor.authorGilardi, Kirsten
dc.contributor.authorShalukoma, Chantal
dc.contributor.authorde Merode, Emmanuel
dc.contributor.authorGilissen, Emmanuel
dc.contributor.authorTocheri, Matthew W.
dc.contributor.authorMcFarlin, Shannon C.
dc.contributor.authorHeuzé, Yann
dc.identifier.citationKate McGrath, Amandine B. Eriksen, Daniel García-Martínez, Jordi Galbany, Aida Gómez-Robles, Jason S. Massey, Lawrence M. Fatica, Halszka Glowacka, Keely Arbenz-Smith, Richard Muvunyi, Tara S. Stoinski, Michael R. Cranfield, Kirsten Gilardi, Chantal Shalukoma, Emmanuel de Merode, Emmanuel Gilissen, Matthew W. Tocheri, Shannon C. McFarlin and Yann Heuzé. (2022). Facial asymmetry tracks genetic diversity among Gorilla subspecies. Proc. R. Soc. B. 289, 20212564.
dc.descriptionElectronic Accessibility Statement: SUNY Oneonta is committed to providing equal access to college information by ensuring our digital content is accessible by everyone regardless of physical, sensory, or cognitive ability. This item has been checked by Adobe Acrobat Accessibility Check and remediated with the following result: [Remediation: language, title, tagged, reading order / Hazards: alt text]. To request further accessibility remediation on this SOAR repository item for your specific needs, please contact
dc.description.abstractMountain gorillas are particularly inbred compared to other gorillas and even the most inbred human populations. As mountain gorilla skeletal material accumulated during the 1970s, researchers noted their pronounced facial asymmetry and hypothesized that it reflects a population-wide chewing side preference. However, asymmetry has also been linked to environmental and genetic stress in experimental models. Here, we examine facial asymmetry in 114 crania from three Gorilla subspecies using 3D geometric morphometrics. We measure fluctuating asymmetry (FA), defined as random deviations from perfect symmetry, and population-specific patterns of directional asymmetry (DA). Mountain gorillas, with a current population size of about 1000 individuals, have the highest degree of facial FA (explaining 17% of total facial shape variation), followed by Grauer gorillas (9%) and western lowland gorillas (6%), despite the latter experiencing the greatest ecological and dietary variability. DA, while significant in all three taxa, explains relatively less shape variation than FA does. Facial asymmetry correlates neither with tooth wear asymmetry nor increases with age in a mountain gorilla subsample, undermining the hypothesis that facial asymmetry is driven by chewing side preference. An examination of temporal trends shows that stress-induced developmental instability has increased over the last 100 years in these endangered apes.en_US
dc.publisherThe Royal Societyen_US
dc.rightsAttribution 4.0 International*
dc.subjectGreat apesen_US
dc.subjectGeometric morphometricsen_US
dc.titleFacial asymmetry tracks genetic diversity among Gorilla subspeciesen_US
dc.source.journaltitleProceedings of the Royal Society Ben_US
dc.description.institutionSUNY Oneontaen_US

Files in this item

Facial asymmetry_aPDF.pdf

This item appears in the following Collection(s)

Show simple item record

Attribution 4.0 International
Except where otherwise noted, this item's license is described as Attribution 4.0 International