RT Journal Article
T1 Demographic History of Indigenous Populations in Mesoamerica Based on mtDNA Sequence Data
A1 González Martín, Antonio
A1 Gorostiza Langa, Amaya
A1 Regalado-Liu, Lucía
A1 Arroyo Peña, Sergio
A1 Tirado López, Sergio
A1 Nuño-Arana, Ismael
A1 Rubi-Castellanos, Rodrigo
A1 Sandoval, Karla
A1 Coble, Michael D.
A1 Rangel Villalobos, Héctor
AB The genetic characterization of Native American groups provides insights into their history and demographic events. We sequenced the mitochondrial D-loop region (control region) of 520 samples from eight Mexican indigenous groups. In addition to an analysis of the genetic diversity, structure and genetic relationship between 28 Native American populations, we applied Bayesian skyline methodology for a deeper insight into the history of Mesoamerica. AMOVA tests applying cultural, linguistic and geographic criteria were performed. MDS plots showed a central cluster of Oaxaca and Maya populations, whereas those from the North and West were located on the periphery. Demographic reconstruction indicates higher values of the effective number of breeding females (Nef) in Central Mesoamerica during the Preclassic period, whereas this pattern moves toward the Classic period for groups in the North and West. Conversely, Nef minimum values are distributed either in the Lithic period (i.e. founder effects) or in recent periods (i.e. population declines). The Mesomerican regions showed differences in population fluctuation as indicated by the maximum Inter-Generational Rate (IGRmax): i) Center-South from the lithic period until the Preclassic; ii) West from the beginning of the Preclassic period until early Classic; iii) North characterized by a wide range of temporal variation from the Lithic to the Preclassic. Our findings are consistent with the genetic variations observed between central, South and Southeast Mesoamerica and the North-West region that are related to differences in genetic drift, structure, and temporal survival strategies (agriculture versus hunter-gathering, respectively). Interestingly, although the European contact had a major negative demographic impact, we detect a previous decline in Mesoamerica that had begun a few hundred years before.
PB Plublic Library of Science (PLOS)
SN ESSN: 1932-6203
YR 2015
FD 2015-08-20
LK https://hdl.handle.net/20.500.14352/23207
UL https://hdl.handle.net/20.500.14352/23207
LA eng
NO Ministerio de Economía y Competitividad (MINECO)
NO CONACyT (México)
NO National Institute of Justice (USA)
DS Docta Complutense
RD 29 abr 2024