Demography and blood genetics of Argentinian Mapuche Indians |
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Authors: | F. R. Carnese A. Caratini A. Goicoechea T. A. Weimer M. H. L. P. Franco M. H. Hutz F. M. Salzano |
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Affiliation: | (1) Sección de Antropología Biológica Facultad de Filosofía y Letras, Universidad de Buenos Aires, Buenos Aires, Brasil;(2) Departamento de Genética Instituto de Biociencias, Universidade Federal do Rio, Grande do Sul, Brasil |
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Abstract: | The whole Mapuche Indian community of Blancura Centro was covered by a demographic census, with special attention given to variables of genetic interest. Afterwards a sample of it was investigated in relation to 22 genetic systems. The community can be characterized as a young group, with high fertility, but moderate mortality and endogamy. The index of opportunity for selection is relatively low (0.46). The presence of variation at the ABO and Lutheran loci suggests some non-Indian admixture, calculated as 7% in the sample studied. Unusual findings were the absence of L*NS, low frequency (7%) of L*MS and high frequency (37%) of L*Ns. They also showed low frequencies of P*1 (28%) and DI*a (3%), but high of HP*1 (74%). Similarities, but also differences, were noted with previous results obtained in this tribe in Argentina and Chile. |
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Keywords: | South American Indians Genetic demography Polymorphisms Ethnic admixture |
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