The ties that bind: Maternal kin bias in a multilevel primate society despite natal dispersal by both sexes

American Journal of Primatology
Veronika StädeleLinda Vigilant

Abstract

In many social animals, individuals derive fitness benefits from close social bonds, which are often formed among kin of the philopatric sex. Hamadryas baboons, however, exhibit a hierarchical, multilevel social system where both sexes disperse from their natal one-male-unit (OMU). Although this would seem to hinder maintenance of kin ties, both sexes appear largely philopatric at the higher order band and clan levels, possibly allowing for bonds with same sex kin by both males and females. In order to investigate the possibility of kin bonds in hamadryas baboons, we identified kin dyads in a band without known pedigree information using a large panel of genetic markers: 1 Y-linked, 4 X-linked, and 23 autosomal microsatellites and part of the mitochondrial hypervariable region I. With these data, we performed a kinship analysis while accounting for misclassification rates through simulations and determined kinship among two types of dyads: leader and follower males and female dyads within OMUs. Leader and follower males were maternal relatives more often than expected by chance, suggesting that kinship plays a role in the formation of these relationships. Moreover, maternal female relatives were found in the same OMU more often...Continue Reading

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Citations

Sep 21, 2016·Ecology and Evolution·Veronika Städele, Linda Vigilant
May 9, 2018·American Journal of Physical Anthropology·Kazunari MatsudairaUlrich H Reichard
Jan 3, 2019·Primates; Journal of Primatology·Meredith C LutzPeter G Judge
Jul 1, 2020·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·Federica Dal Pesco, Julia Fischer
May 10, 2020·Animal Cognition·Christoph D DahlKlaus Zuberbühler
Oct 20, 2019·Journal of Human Evolution·Larissa Swedell, Thomas Plummer

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