Mitochondrial DNA haplogroups in Amerindian populations from the Gran Chaco

DEMARCHI, DA; PANZETTA DE DUTARI GM; MOTRAN CC; LOPÉZ DE BASUALDO MA; MARCELLINO AJ

WILEY-LISS, DIV JOHN WILEY & SONS INC

Lugar: New York; Año: 2001 vol. 115 p. 199 - 199

itochondrial DNA from 141 individuals was typed for diagnostic restriction sites and the 9-bp region V deletion to examine the distribution of the founding mtDNA lineage haplotypes in three Amerindian populations (Mataco, Toba, and Pilagá) who currently inhabit the Argentinian part of the Gran Chaco. All four lineages were identified in the three tribes and four population samples studied. Disregarding ethnic or geographic origin, haplogroups B and D exhibit high incidence among the Gran Chaco inhabitants, whereas haplogroups A and C are present in a lower frequency. Three individuals possess none of the characteristic markers and, therefore, could not be assigned to one of those lineages. A neighbor-joining representation of FST distances reflects the current geographic location of the populations, and this also corresponds to their historic distribution. After separating South America into four major regions (Tropical Forest, Andes, Gran Chaco, and Patagonia-Tierra del Fuego),