Population genetic dynamics in the French Guiana region

Stéphane Mazières (1) , André Sevin (1) , Sidia Maria Callegari-Jacques (2, 3) , Eric Crubézy (1) , Georges Larrouy (1) , Jean-Michel Dugoujon (1) , Francisco Mauro Salzano (2)

1 LA - Laboratoire d'Anthropobiologie
2 Departamento de Genética
3 Departamento de Estatística

Three sets of genetic markers (blood group plus protein polymorphisms, mitochondrial DNA and Y-chromosome) were compared in four French Guiana and one Brazilian Amerindian populations. Spearman's rank correlation coefficient between five gene diversity statistics and historical or present-day population sizes showed significant values, indicating loss of diversity due to population bottlenecks. The three sets of markers furnished distinct admixture estimates, and the blood group plus protein polymorphisms could have overestimated the European contribution to their gene pool. Correspondence analysis distinguished the coastal from the interior populations, possibly reflecting past migration events.

Domaines: Anthropologie biologique; Biodiversité et Ecologie

Stéphane Mazières, André Sevin, Sidia Maria Callegari-Jacques, Eric Crubézy, Georges Larrouy, et al.. Population genetic dynamics in the French Guiana region. American Journal of Human Biology, 2008, pp.21(1):113-7. ⟨hal-00334992⟩