MaqFACS (Macaque Facial Action Coding System) can be used to document facial movements in Barbary macaques (Macaca sylvanus)
DOI
10.7717/peerj.1248
Document Type
Journal Article
Publication Date
1-1-2015
Publication Title
PeerJ
Volume
2015
Issue
9
Keywords
Anatomy, Barbary macaques, Facial expressions, FACS, Phylogeny, Rhesus macaques
Abstract
Human and non-human primates exhibit facial movements or displays to communicate with one another. The evolution of formand function of those displays could be better understood through multispecies comparisons. Anatomically based coding systems (Facial Action Coding Systems: FACS) are developed to enable such comparisons because they are standardized and systematic and aid identification of homologous expressions underpinned by similar muscle contractions. To date, FACS has been developed for humans, and subsequently modified for chimpanzees, rhesus macaques, orangutans, hylobatids, dogs, and cats. Here, we wanted to test whether theMaqFACS systemdeveloped in rhesus macaques (Macaca mulatta) could be used to code facial movements in Barbary macaques (M. sylvanus), a species phylogenetically close to the rhesus macaques. The findings show that the facial movement capacity of Barbary macaques can be reliably coded using the MaqFACS. We found differences in use and form of some movements, most likely due to specializations in the communicative repertoire of each species, rather than morphological differences.
Open Access
Gold
Repository Citation
Julle-Danière, É., Micheletta, J., Whitehouse, J., Joly, M., Gass, C., Burrows, A., & Waller, B. (2015). MaqFACS (Macaque Facial Action Coding System) can be used to document facial movements in Barbary macaques (Macaca sylvanus). PeerJ, 2015 (9). https://doi.org/10.7717/peerj.1248