Facial expressivity in dominant macaques is linked to group cohesion.

Autor:	Whitehouse J; Department of Psychology, Nottingham Trent University , Nottingham NG1 4FQ, UK., Clark PR; School of Psychology, University of Lincoln , Lincoln LN6 7TS, UK., Robinson RL; Department of Psychology, Nottingham Trent University , Nottingham NG1 4FQ, UK., Rees K; Department of Psychology, Nottingham Trent University , Nottingham NG1 4FQ, UK., O'Callaghan O; Department of Psychology, Nottingham Trent University , Nottingham NG1 4FQ, UK., Kimock CM; Department of Psychology, Nottingham Trent University , Nottingham NG1 4FQ, UK., Witham CL; Centre for Macaques, Medical Research Council , Salisbury SP4 0JQ, UK., Waller BM; Department of Psychology, Nottingham Trent University , Nottingham NG1 4FQ, UK.
Jazyk:	angličtina
Zdroj:	Proceedings. Biological sciences [Proc Biol Sci] 2024 Aug; Vol. 291 (2027), pp. 20240984. Date of Electronic Publication: 2024 Jul 17.
DOI:	10.1098/rspb.2024.0984
Abstrakt:	Social living affords primates (including humans) many benefits. Communication has been proposed to be the key mechanism used to bond social connections, which could explain why primates have evolved such expressive faces. We assessed whether the facial expressivity of the dominant male (quantified from the coding of anatomically based facial movement) was related to social network properties (based on social proximity and grooming) in nine groups of captive rhesus macaques ( Macaca mulatta ) housed in uniform physical and social environments. More facially expressive dominant male macaques were more socially connected and had more cohesive social groups. These findings show that inter-individual differences in facial expressivity are related to differential social outcomes at both an individual and group level. More expressive individuals occupy more beneficial social positions, which could help explain the selection for complex facial communication in primates.
Databáze:	MEDLINE
Externí odkaz:	Zobrazit plný text záznamu