Demography, genetic diversity, and population relationships among Argentinean Mapuche Indians

Fertility, mortality and migration data from four Mapuche Indian communities located along a 215-km NE-SW linear area in the Province of Río Negro, Argentina, were collated with genetic information furnished by nine blood group systems and by mtDNA haplogroups. The demographic and genetic data indicated a clear dichotomy, which split the four populations into two groups of two. Differing degrees of non-Indian exchanges was probably the main determining factor for this separation. Total genetic variability was very similar in all groups, and the interpopulational variability accounted for only 10% of the total variability. A low prevalence of the Diego(a) antigen among the Mapuche was confirmed. The fact that significant genetic heterogeneity and population clusters were found in such a small territorial region attests to the sensitivity of demographic and genetic approaches in unraveling human history.

Bibliographic Details

Main Authors:	Goicoechea,Alicia S., Carnese,Francisco R., Caratini,Alicia L., Avena,Sergio, Salaberry,Maria, Salzano,Francisco M.
Format:	Digital revista
Language:	English
Published:	Sociedade Brasileira de Genética 2000
Online Access:	http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572000000300001
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