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- W3096892982 abstract "ABSTRACT Opposite-sex social relationships are important predictors of fitness in many animals, including several group-living mammals. Consequently, understanding sources of variance in the tendency to form opposite-sex relationships is important for understanding social evolution. Genetic contributions are of particular interest due to their importance in long-term evolutionary change, but little is known about genetic effects on male-female relationships in social mammals, especially outside of the mating context. Here, we investigate the effects of genetic ancestry on male-female affiliative behavior in a hybrid zone between the yellow baboon ( Papio cynocephalus ) and the anubis baboon ( P. anubis ), in a population in which male-female social bonds are known predictors of lifespan. We place our analysis within the context of other social and demographic predictors of affiliative behavior in baboons. Genetic ancestry was the most consistent predictor of opposite-sex affiliative behavior we observed, with the exception of strong effects of dominance rank. Our results show that increased anubis genetic ancestry is associated with subtly, but significantly higher rates of opposite-sex affiliative behavior, in both males and females. Additionally, pairs of anubis-like males and anubis-like females were the most likely to socially affiliate, resulting in moderate assortativity in grooming and proximity behavior as a function of genetic ancestry. Our findings indicate that opposite-sex affiliative behavior partially diverged during baboon evolution to differentiate yellow and anubis baboons, despite overall similarities in their social structures and mating systems. Further, they suggest that affiliative behavior may simultaneously promote and constrain baboon admixture, through additive and assortative effects of ancestry, respectively. HIGHLIGHTS Opposite-sex social relationships can have important fitness consequences. In hybrid baboons, genetic ancestry predicted male-female affiliative behavior. Both an individual’s genetic ancestry and that of its social partner mattered. Male-female affiliation was assortative with respect to genetic ancestry. Dominance rank and group demography also influenced male-female social affiliation." @default.
- W3096892982 created "2020-11-09" @default.
- W3096892982 creator A5007247836 @default.
- W3096892982 creator A5016181565 @default.
- W3096892982 creator A5029402102 @default.
- W3096892982 creator A5052204851 @default.
- W3096892982 creator A5073045826 @default.
- W3096892982 creator A5074476246 @default.
- W3096892982 date "2020-10-29" @default.
- W3096892982 modified "2023-09-23" @default.
- W3096892982 title "Genetic ancestry predicts male-female affiliation in a natural baboon hybrid zone" @default.
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