Abstract

FIGUEIRO, Gonzalo et al. Phylogeography of native mitogenomes from Uruguay. Rev Arg Antrop Biol [online]. 2022, vol.24, n.1, 042.  Epub Jan 01, 2022. ISSN 1514-7991.  http://dx.doi.org/10.24215/18536387e042.

Recently, several studies on the Uruguayan population have shown that it is formed by unequal contributions from Europeans, Africans, Native Americans, and others. The native component is larger when maternal contribution is analyzed, but its ethnic/geographic origin remains unclear, as it is also unclear how and when these groups arrived. To contribute to the knowledge about prehistoric and historic peopling of the territory and its relations with other populations, 32 complete mitochondrial genomes (mitogenomes) were obtained by next generation sequencing. They belong to present inhabitants of the country, whose hypervariable regions were previously analyzed and whose identified haplogroups belonged to one of the four main haplogroups of Native American origin. Seven new subhaplogroups (A2be, A2bf, B2an, C1d1h, C1b30, C1b31 and D1x) were determined, another was redenominated (C1d1d - present C1d1g), and the criteria to assign B2b6 and D1g5 were reviewed. The age of the new subhaplogroups was estimated between 4.554 and 11.985 years, while the age of C1d1g was estimated in 20.736 years. Some sequences could be related to different ethnic groups, or to several geographic regions such as Amazonia, Chaco, Pampa or Andes. The new subhaplogroup assignations, together with their geographic distribution and chronology, are discussed in relation to the general panorama of South America.

Keywords : mitochondrial DNA; migrations; South America.

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