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dc.contributor.authorPerea-García, Juan Olvido
dc.contributor.authorKret, Mariska E.
dc.contributor.authorMonteiro, Antónia
dc.contributor.authorHobaiter, Catherine
dc.identifier.citationPerea-García , J O , Kret , M E , Monteiro , A & Hobaiter , C 2019 , ' Scleral pigmentation leads to conspicuous, not cryptic, eye morphology in chimpanzees ' , Proceedings of the National Academy of Sciences of the United States of America , vol. Latest Articles , 201911410 .
dc.identifier.otherPURE: 261009189
dc.identifier.otherPURE UUID: 7c9a9b57-5ac5-4296-b917-bc6f6293c675
dc.identifier.otherRIS: urn:D9D1C122D5EEA0E1C8335CFD28590F09
dc.identifier.otherORCID: /0000-0002-3893-0524/work/61370044
dc.identifier.otherScopus: 85072643334
dc.identifier.otherWOS: 000487532900012
dc.description.abstractGaze following has been argued to be uniquely human, facilitated by our depigmented, white sclera [M. Tomasello, B. Hare, H. Lehmann, J. Call, J. Hum. Evol. 52, 314–320 (2007)]—the pale area around the colored iris—and to underpin human-specific behaviors such as language. Today, we know that great apes show diverse patterns of scleral coloration [J. A. Mayhew, J. C. Gómez, Am. J. Primatol. 77, 869–877 (2015); J. O. Perea García, T. Grenzner, G. Hešková, P. Mitkidis, Commun. Integr. Biol. 10, e1264545 (2016)]. We compare scleral coloration and its relative contrast with the iris in bonobos, chimpanzees, and humans. Like humans, bonobos’ sclerae are lighter relative to the color of their irises; chimpanzee sclerae are darker than their irises. The relative contrast between the sclera and iris in all 3 species is comparable, suggesting a perceptual mechanism to explain recent evidence that nonhuman great apes also rely on gaze as a social cue.
dc.relation.ispartofProceedings of the National Academy of Sciences of the United States of Americaen
dc.rightsCopyright © 2019 the Author(s). Published by PNAS. This open access article is distributed under Creative Commons Attribution-NonCommercial-NoDerivatives License 4.0 (CC BY-NC-ND).en
dc.subjectComparative morphologyen
dc.subjectBF Psychologyen
dc.titleScleral pigmentation leads to conspicuous, not cryptic, eye morphology in chimpanzeesen
dc.typeJournal articleen
dc.description.versionPublisher PDFen
dc.contributor.institutionUniversity of St Andrews.School of Psychology and Neuroscienceen
dc.contributor.institutionUniversity of St Andrews.Centre for Social Learning & Cognitive Evolutionen
dc.description.statusPeer revieweden

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