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How old are chimpanzee communities? Time to the most recent common ancestor of the Y-chromosome in highly patrilocal societies
Auteur(s)
Langergraber, Kevin E.
Rowney, Carolyn
Schubert, Grit
Crockford, Cathy
Hobaiter, Catherine
Wittig, Roman
Wrangham, Richard W.
Vigilant, Linda
Date de parution
2014
In
Journal of Human Evolution
No
69
De la page
1
A la page
7
Résumé
Many human societies are patrilineal, with males passing on their name or descent group affiliation to their offspring. Y-chromosomes are also passed on from father to son, leading to the simple expectation that males sharing the same surname or descent group membership should have similar Y-chromosome haplotypes. Although several studies in patrilineal human societies have examined the correspondence between Y-chromosome variation and surname or descent group membership, similar studies in non-human animals are lacking. Chimpanzees represent an excellent species for examining the relationship between descent group membership and Y-chromosome variation because they live in strongly male philopatric communities that arise by a group-fissioning process. Here we take advantage of recent analytical advances in the calculation of the time to the most recent common male ancestor and a large sample size of 273 Y-chromosome short tandem repeat haplotypes to inform our understanding of the potential ages of eight communities of chimpanzees. We find that the times to the most recent common male ancestor of chimpanzee communities are several hundred to as much as over two thousand years. These genetic estimates of the great time depths of chimpanzee communities accord well with behavioral observations suggesting that community fissions are a very rare event and are similar to genetic estimates of the time depth of patrilineal human groups. (C) 2014 Elsevier Ltd. All rights reserved.
Identifiants
Type de publication
journal article
