Ethnic Admixture Composition of Two Western Amazonian Populations

• Published in: Human biology 2002-08, Vol.74 (4), p.607-614
• Main Authors: FERREIRA, R.G.M., MOURA, M.M., ENGRACIA, V., PAGOTTO, R.C., ALVES, F.P, CAMARGO, L.M.A., DA SILVA, L.H. PEREIRA, CAMARGO, E.P, BEIGUELMAN, B., KRIEGER, H.
• Format: Article
• Language: English
• Subjects: Admixtures; Blood; Blood Group Antigens - genetics; Brazil; Brief Communications; Causes of; Demographic aspects; Demography; Disease; Electrophoresis; Epidemiology; Ethnic Groups - genetics; Gene Frequency; Genetic aspects; Genetic markers; Genetics, Population; Health aspects; Human biology; Human genetics; Humans; Infection; Infectious diseases; Minority & ethnic groups; Physiological aspects; Polymorphism, Genetic; Population ecology; Population genetics; Rural Population; Rural populations; Statistics
• ISSN: 0018-7143; 1534-6617; 1534-6617
• DOI: 10.1353/hub.2002.0041

A small riverine community, Portachuelo (8°37'S, 63°49'W), and a rural county, Monte Negro (10°15'S, 63°18'W), both in the state of Rondônia, Brazil, were studied for the purposes of ascertaining health conditions and the causes of the variability of some infectious diseases. The sample included 181 inhabitants of Portachuelo and 924 of Monte Negro. Data on 11 blood polymorphisms (ABO, Rh, MNSs, Kell, Fy, haptoglobin, hemoglobin, ACPI, PGM1, GLO1, and CA2) were used to determine the ethnic composition of the inhabitants of Portachuelo and Monte Negro. The contributions of Africans, Amerindians, and Europeans to the ethnic composition of the studied populations were, respectively, 0.21 ± 0.046,0.44 ± 0.064, and 0.35 ± 0.069 in Portachuelo; and 0.25 ± 0.032,0.12 ± 0.046, and 0.63 ± 0.054 in Monte Negro.