Supplementary material from "Dominance style is a key predictor of vocal use and evolution across nonhuman primates"
Posted on 2021-07-23 - 05:30
Animal communication has long been thought to be subject to pressures and constraints associated with social relationships. However, our understanding of how the nature and quality of social relationships relates to the use and evolution of communication is limited by a lack of directly comparable methods across multiple levels of analysis. Here, we analysed observational data from 111 wild groups belonging to 26 non-human primate species, to test how vocal communication relates to dominance style (the strictness with which a dominance hierarchy is enforced, ranging from ‘despotic’ to ‘tolerant’). At the individual-level, we found that dominant individuals who were more tolerant vocalized at a higher rate than their despotic counterparts. This indicates that tolerance within a relationship may place pressure on the dominant partner to communicate more during social interactions. At the species-level, however, despotic species exhibited a larger repertoire of hierarchy-related vocalizations than their tolerant counterparts. Findings suggest primate signals are used and evolve in tandem with the nature of interactions that characterize individuals' social relationships.
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Kavanagh, Eithne; Street, Sally E.; Angwela, Felix O.; Bergman, Thore J.; Blaszczyk, Maryjka B.; Bolt, Laura M.; et al. (2021). Supplementary material from "Dominance style is a key predictor of vocal use and evolution across nonhuman primates". The Royal Society. Collection. https://doi.org/10.6084/m9.figshare.c.5525486.v1
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AUTHORS (64)
EK
Eithne Kavanagh
SS
Sally E. Street
FA
Felix O. Angwela
TB
Thore J. Bergman
MB
Maryjka B. Blaszczyk
LB
Laura M. Bolt
MB
Margarita Briseño-Jaramillo
MB
Michelle Brown
CC
Chloe Chen-Kraus
ZC
Zanna Clay
CC
Camille Coye
MT
Melissa Emery Thompson
AE
Alejandro Estrada
CF
Claudia Fichtel
BF
Barbara Fruth
MG
Marco Gamba
CG
Cristina Giacoma
KG
Kirsty E. Graham
SG
Samantha Green
CG
Cyril C. Grueter