Genetic variability in the Guahibo population from Venezuela

American Journal of Human Biology : the Official Journal of the Human Biology Council
P MoralG Vona

Abstract

Four communities from Guahibo of Venezuela were analyzed for the genetic variants of nine erythrocyte enzymes and five serum proteins. Of the 14 loci determined, four were monomorphic. Significant frequency differentiation among communities, was present for ESD and TF markers. In general, Guahibo allele frequencies are in the variation ranges described for South American groups. The analysis indicates a relatively higher affinity of Guahibos with other Venezuelan groups within an irregular pattern of genetic distances that are likely related to the complex demographic history of the South American groups. Genetic diversity estimates reveal a moderate degree of genetic structure between the four Guahibo communities. This intra-tribal variability in Guahibo appears to be lower than in Venezuelan Piaroa but higher than in other Amerindians and could be attributed to a combined effect of low population size and relative isolation of communities. At a continental level, the distribution of genetic diversity is consistent with preferential population movements along the eastern and western coastal areas.

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Citations

Dec 13, 2006·Revista Da Sociedade Brasileira De Medicina Tropical·Carlos Fernández de LarreaZaida Araujo
Dec 6, 2008·Memórias do Instituto Oswaldo Cruz·Zaida AraujoAlbina Wide
Nov 24, 2004·American Journal of Physical Anthropology·Giuseppe VonaLaurent Varesi

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