Biology

The evolution of same-sex sexual behaviour in mammals

J. M. Gómez, A. González-megías, et al.

Discover the intriguing world of same-sex sexual behavior in mammals, a prevalent phenomenon that's more than just a curiosity! Researchers José M. Gómez, A. González-Megías, and M. Verdú delve into its evolutionary significance, revealing surprising patterns and associations with social dynamics and conflict management. This evolutionary journey uncovers the adaptive roles of SSB across species, particularly within primates.

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Abstract

Same-sex sexual behaviour (SSB), while not directly contributing to reproduction, is prevalent across numerous animal species. This study investigates the evolution of SSB in mammals using phylogenetic analyses. The analysis reveals SSB is not randomly distributed, being especially common in primates. Ancestral reconstruction suggests multiple independent evolutionary origins, mostly recently. Associations between SSB, sociality, and intraspecific lethal aggression (adulticide) suggest adaptive roles in social dynamics and conflict mitigation.

Publisher

Nature Communications

Published On

Oct 03, 2023

Authors

José M. Gómez, A. González-Megías, M. Verdú

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