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dc.contributor.authorvan de Waal, Erica
dc.contributor.authorKruetzen, Michael
dc.contributor.authorHula, Josephine
dc.contributor.authorGoudet, Jerome
dc.contributor.authorBshary, Redouan
dc.identifier.citationvan de Waal , E , Kruetzen , M , Hula , J , Goudet , J & Bshary , R 2012 , ' Similarity in food cleaning techniques within matrilines in wild vervet monkeys ' , PLoS One , vol. 7 , no. 4 , e35694 .
dc.identifier.otherPURE: 53334812
dc.identifier.otherPURE UUID: 0dbf6d84-6479-4495-b194-edbdfbaff69d
dc.identifier.otherWOS: 000305345200068
dc.identifier.otherScopus: 84866174677
dc.description.abstractSocial learning and the formation of traditions rely on the ability and willingness to copy one another. A central question is under which conditions individuals adapt behaviour to social influences. Here, we demonstrate that similarities in food processing techniques emerge on the level of matrilines (mother - offspring) but not on the group level in an experiment on six groups of wild vervet monkeys that involved grapes covered with sand. Monkeys regularly ate unclean grapes but also used four cleaning techniques more similarly within matrilines: rubbing in hands, rubbing on substrate, open with mouth, and open with hands. Individual cleaning techniques evolved over time as they converged within matrilines, stabilised at the end and remained stable in a follow-up session more than one year later. The similarity within matrilines persisted when we analyzed only foraging events of individuals in the absence of other matriline members and matriline members used more similar methods than adult full sisters. Thus, momentary conversion or purely genetic causation are unlikely explanations, favouring social learning as mechanism for within matriline similarities. The restriction of traditions to matriline membership rather than to the group level may restrict the development of culture in monkeys relative to apes or humans.
dc.relation.ispartofPLoS Oneen
dc.rights© 2012 van de Waal et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.en
dc.subjectCapuchin monkeysen
dc.subjectVocal traditionsen
dc.subjectSocial transmissionen
dc.subjectLearning strategyen
dc.subjectChlorocebus aethiopsen
dc.subjectMacaca fuscataen
dc.subjectJapanese macaquesen
dc.subjectOrcinus orcaen
dc.subjectField experimenten
dc.subjectQ Scienceen
dc.titleSimilarity in food cleaning techniques within matrilines in wild vervet monkeysen
dc.typeJournal articleen
dc.description.versionPublisher PDFen
dc.contributor.institutionUniversity of St Andrews. School of Psychology and Neuroscienceen
dc.description.statusPeer revieweden

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