Mis à jour le 18.06.2019

Europe : génétique et signification des tombes mégalithiques

Icône actu internationale Sous le titre « Megalithic tombs in western and northern Neolithic Europe were linked to a kindred society », la revue PNAS (Proceedings of the National Academy of Sciences) propose dans sa dernière livraison un article où la génétique apporte un éclairage intéressant sur le phénomène mégalithique.

Cette contribution est le fruit de la collaboration d’une petite vingtaine d’auteurs, Federico Sánchez-Quinto, Helena Malmström, Magdalena Fraser, Linus Girdland-Flink, Emma M. Svensson, Luciana G. Simões, Robert George, Nina Hollfelder, Göran Burenhult, Gordon Noble, Kate Brittong, Sahra Talamo, Neil Curtis, Hana Brzobohata, Radka Sumberova, Anders Götherström, Jan Storå et Mattias Jakobsson, tous appartenant à des universités ou institutions scientifiques suédoises, anglaises, tchèques, allemandes… Un article du 7 mai 2019.

Ci dessous le résumé anglais proposé par les auteurs :
Paleogenomic and archaeological studies show that Neolithic lifeways spread from the Fertile Crescent into Europe around 9000 BCE, reaching northwestern Europe by 4000 BCE. Starting around 4500 BCE, a new phenomenon of constructing megalithic monuments, particularly for funerary practices, emerged along the Atlantic façade. While it has been suggested that the emergence of megaliths was associated with the territories of farming communities, the origin and social structure of the groups that erected them has remained largely unknown. We generated genome sequence data from human remains, corresponding to 24 individuals from five megalithic burial sites, encompassing the widespread tradition of megalithic construction in northern and western Europe, and analyzed our results in relation to the existing European paleogenomic data. The various individuals buried in megaliths show genetic affinities with local farming groups within their different chronological contexts. Individuals buried in megaliths display (past) admixture with local hunter-gatherers, similar to that seen in other Neolithic individuals in Europe. In relation to the tomb populations, we find significantly more males than females buried in the megaliths of the British Isles. The genetic data show close kin relationships among the individuals buried within the megaliths, and for the Irish megaliths, we found a kin relation between individuals buried in different megaliths. We also see paternal continuity through time, including the same Y-chromosome haplotypes reoccurring. These observations suggest that the investigated funerary monuments were associated with patrilineal kindred groups. Our genomic investigation provides insight into the people associated with this long-standing megalith funerary tradition, including their social dynamics.