Ancient genomes in South Patagonia reveal population movements associated with technological shifts and geography
Archaeological research documents major technological shifts among people who have lived in the southern tip of South America (South Patagonia) during the last thirteen millennia, including the development of marine-based economies and changes in tools and raw materials. It has been proposed that movements of people spreading culture and technology propelled some of these shifts, but these hypotheses have not been tested with ancient DNA. Here we report genome-wide data from 20 ancient individuals, and co-analyze it with previously reported data. We reveal that immigration does not explain the appearance of marine adaptations in South Patagonia. We describe partial genetic continuity since ~6600 BP and two later gene flows correlated with technological changes: one between 4700–2000 BP that affected primarily marine-based groups, and a later one impacting all <2000 BP groups. From ~2200–1200 BP, mixture among neighbors resulted in a cline correlated to geographic ordering along the coast.
| Main Authors: | , , , , , , , , , , , , , , , , , , , , |
|---|---|
| Other Authors: | |
| Format: | artículo biblioteca |
| Published: |
Nature Publishing Group
2020-08-03
|
| Online Access: | http://hdl.handle.net/10261/236060 http://dx.doi.org/10.13039/501100011033 http://dx.doi.org/10.13039/100000011 http://dx.doi.org/10.13039/100000925 http://dx.doi.org/10.13039/100006363 http://dx.doi.org/10.13039/100000002 http://dx.doi.org/10.13039/501100002923 http://dx.doi.org/10.13039/501100000780 http://dx.doi.org/10.13039/501100003074 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| Summary: | Archaeological research documents major technological shifts among people who have lived in the southern tip of South America (South Patagonia) during the last thirteen millennia, including the development of marine-based economies and changes in tools and raw materials. It has been proposed that movements of people spreading culture and technology propelled some of these shifts, but these hypotheses have not been tested with ancient DNA. Here we report genome-wide data from 20 ancient individuals, and co-analyze it with previously reported data. We reveal that immigration does not explain the appearance of marine adaptations in South Patagonia. We describe partial genetic continuity since ~6600 BP and two later gene flows correlated with technological changes: one between 4700–2000 BP that affected primarily marine-based groups, and a later one impacting all <2000 BP groups. From ~2200–1200 BP, mixture among neighbors resulted in a cline correlated to geographic ordering along the coast. |
|---|