Paths and timings of the peopling of Polynesia inferred from genomic networks
23 de septiembre de 2021
Les invitamos a leer el artículo "Paths and timings of the peopling of Polynesia inferred from genomic networks" publicado en Nature, trabajo del Dr. Andrés Moreno Estrada de la UGA-Langebio.
Autores: Alexander G. Ioannidis, Javier Blanco-Portillo, Karla Sandoval , Erika Hagelberg,Carmina Barberena-Jonas, Adrian V. S. Hill, Juan Esteban Rodríguez-Rodríguez, Keolu Fox, Kathryn Robson, Sonia Haoa-Cardinali, Consuelo D. Quinto-Cortés, Juan Francisco Miquel-Poblete, Kathryn Auckland, Tom Parks, Abdul Salam M. Sofro, María C. Ávila-Arcos, Alexandra Sockell, Julian R. Homburger, Celeste Eng,Scott Huntsman, Esteban G. Burchard, Christopher R. Gignoux, Ricardo A. Verdugo, Mauricio Moraga, Carlos D. Bustamante, Alexander J. Mentzer & Andrés Moreno-Estrada.
Felicitamos al estudiantado y profesorado que contribuyeron en esta investigación por su arduo trabajo.
Abstract: Polynesia was settled in a series of extraordinary voyages across an ocean spanning one third of the Earth1, but the sequences of islands settled remain unknown and their timings disputed. Currently, several centuries separate the dates suggested by different archaeological surveys2,3,4. Here, using genome-wide data from merely 430 modern individuals from 21 key Pacific island populations and novel ancestry-specific computational analyses, we unravel the detailed genetic history of this vast, dispersed island network. Our reconstruction of the branching Polynesian migration sequence reveals a serial founder expansion, characterized by directional loss of variants, that originated in Samoa and spread first through the Cook Islands (Rarotonga), then to the Society (Tōtaiete mā) Islands (11th century), the western Austral (Tuha’a Pae) Islands and Tuāmotu Archipelago (12th century), and finally to the widely separated, but genetically connected, megalithic statue-building cultures of the Marquesas (Te Henua ‘Enana) Islands in the north, Raivavae in the south, and Easter Island (Rapa Nui), the easternmost of the Polynesian islands, settled in approximately ad 1200 via Mangareva.