Genomic ancestry and social dynamics of the last hunter-gatherers of Atlantic France - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Proceedings of the National Academy of Sciences of the United States of America Année : 2024

Genomic ancestry and social dynamics of the last hunter-gatherers of Atlantic France

Luciana G Simões
Carolina Bernhardsson
Amélie Vialet
Darshan Chetty
Erkin Alaçamlı
Hanna Edlund
  • Fonction : Auteur
Denis Bouquin
Christian Dina
Torsten Günther
Mattias Jakobsson

Résumé

Since the early Holocene, western and central Europe was inhabited by a genetically distinct group of Western Hunter-Gatherers (WHGs). This group was eventually replaced and assimilated by the incoming Neolithic farmers. The western Atlantic façade was home to some of the last Mesolithic sites of mainland Europe, represented by the iconic open-air sites at Hoedic and Téviec in southern Brittany, France. These sites are known for the unusually well-preserved and rich burials. Genomic studies of Mesolithic European hunter-gatherers have been limited to single or a few individuals per site and our understanding of the social dynamics of the last Mesolithic hunter-gatherers of Europe and their interactions with incoming farmers is limited. We sequenced and analyzed the complete genomes of 10 individuals from the Late Mesolithic sites of Hoedic, Téviec, and Champigny, in France, four of which sequenced to between 23- and 8-times genome coverage. The analysis of genomic, chronological and dietary data revealed that the Late Mesolithic populations in Brittany maintained distinct social units within a network of exchanging mates. This resulted in low intra-group biological relatedness that prevented consanguineous mating, despite the small population size of the Late Mesolithic groups. We found no genetic ancestry from Neolithic farmers in the analyzed hunter-gatherers, even though some of them may have coexisted with the first farming groups in neighboring regions. Hence, contrary to previous conclusions based on stable isotope data from the same sites, the Late Mesolithic forager community was limited in mate-exchange to neighboring hunter-gatherer groups, to the exclusion of Neolithic farmers.

Dates et versions

hal-04484098 , version 1 (29-02-2024)

Licence

Paternité - Pas d'utilisation commerciale - Pas de modification

Identifiants

Citer

Luciana G Simões, Rita Peyroteo-Stjerna, Grégor Marchand, Carolina Bernhardsson, Amélie Vialet, et al.. Genomic ancestry and social dynamics of the last hunter-gatherers of Atlantic France. Proceedings of the National Academy of Sciences of the United States of America, 2024, Proceedings of the National Academy of Sciences of the United States of America, 121 (10), pp.e2310545121. ⟨10.1073/pnas.2310545121⟩. ⟨hal-04484098⟩
31 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More