Geography influences microsatellite polymorphism diversity in Amerindians

Am J Phys Anthropol. 2005 Apr;126(4):463-70. doi: 10.1002/ajpa.20042.


Data related to 15 short tandem repeat polymorphisms (STRPs) are reported for four South American Indian populations, and integrated with previous Brazilian Indian results. Overall heterozygosities varied significantly among groups (Kruskal-Wallis test, P = 0.002). The lowest levels of heterozygosity were observed in the Ache, Ayoreo, and Surui, an expected finding considering their isolation and ethnohistory. Genetic distance and gene diversity analyses suggested that geography was a good predictor of genetic affinity among these Native Americans. New evidence from this study supports the hypothesis that the Ache population descends from a Ge group that preceded the Guarani colonization of Paraguay.

Publication types

  • Comparative Study
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Analysis of Variance
  • Brazil
  • Cluster Analysis
  • Gene Frequency
  • Genetics, Population*
  • Geography
  • Heterozygote
  • Humans
  • Indians, South American / genetics*
  • Microsatellite Repeats / genetics*
  • Paraguay
  • Polymorphism, Genetic*
  • Population Dynamics