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The role of between-group signaling in the evolution of primate ornamentation

Grueter, Cyril C; Lüpold, Stefan (2024). The role of between-group signaling in the evolution of primate ornamentation. Evolution Letters, 8(6):927-935.

Abstract

Gregarious mammals interact to varying degrees and in a variety of ways with neighboring groups. Since navigating this wider social environment via conventional means (social knowledge) may be challenging, we hypothesize that between-group socio-spatial dynamics have exerted strong selection on phenotypic markers of individual identity, quality, and competitive ability. Ornaments are sexually selected decorative traits with far-reaching signaling potential. Here, we examined the links between sexual dimorphism in ornamentation, home range use and encounter rates across 144 primate species in a Bayesian framework. We show that home range overlap (shared space among neighbors), an indicator of the complexity of between-group interactions (but not necessarily male-male competition), is positively associated with dimorphism in ornamentation. We find no clear effect for between-group encounter rates. We also find that inter-group interactions were less agonistic when there was greater home range overlap. Taken together, these findings indicate that ornaments play a hitherto underappreciated role in signaling to conspecifics outside the realms of their home groups.

Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Institute of Evolutionary Biology and Environmental Studies
Dewey Decimal Classification:590 Animals (Zoology)
570 Life sciences; biology
Language:English
Date:2 December 2024
Deposited On:15 Jan 2025 15:21
Last Modified:16 Jan 2025 13:59
Publisher:Wiley-Blackwell Publishing, Inc.
ISSN:2056-3744
OA Status:Gold
Free access at:Publisher DOI. An embargo period may apply.
Publisher DOI:https://doi.org/10.1093/evlett/qrae045
Official URL:https://doi.org/10.1093/evlett/qrae045
PubMed ID:39677580
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  • Licence: Creative Commons: Attribution 4.0 International (CC BY 4.0)

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