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Correlated evolution of social organization and lifespan in mammals
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Correlated evolution of social organization and lifespan in mammals
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Correlated evolution of social organization and lifespan in mammals
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Journal Article
Correlated evolution of social organization and lifespan in mammals
2023
Overview
Discerning the relationship between sociality and longevity would permit a deeper understanding of how animal life history evolved. Here, we perform a phylogenetic comparative analysis of ~1000 mammalian species on three states of social organization (solitary, pair-living, and group-living) and longevity. We show that group-living species generally live longer than solitary species, and that the transition rate from a short-lived state to a long-lived state is higher in group-living than non-group-living species, altogether supporting the correlated evolution of social organization and longevity. The comparative brain transcriptomes of 94 mammalian species identify 31 genes, hormones and immunity-related pathways broadly involved in the association between social organization and longevity. Further selection features reveal twenty overlapping pathways under selection for both social organization and longevity. These results underscore a molecular basis for the influence of the social organization on longevity.
To elucidate the relationship between sociality and longevity, the authors perform phylogenetic and transcriptomic comparative analysis of mammals. They find that group-living species lived longer than solitary species and identify 31 genes, hormones, and immunity-related pathways involved in this connection.
