The genetic structure of two African-Ecuadorian communities, Rio Cayapas and Viche (Esmeraldas province, northwest Ecuador), was studied on the basis of ACP1, ADA, AK1, CA2, ESD, GLO1, G6PD, PGD, and PGM1 subtypes and thermostability, PGM2, HB beta, F13A, F13B, ORM1, AHSG, C6, C7, and APOC2 gene frequency, and migration data on 255 individuals. The fixation index of Wright (F-ST), correspondence, and genetic distance analysis were applied to compare the genetic relationships between these communities and other American populations of African ancestry. FST values from the migration data and surname origins suggest that Rio Cayapas is genetically more isolated and shows less mobility and admixture than does Viche. The genetic admixture estimates indicate a large contribution of African genes to the gene pool of both communities (74.3% to 58.4%), whereas the proportion of the Amerindian component differs significantly (14.5% in Rio Cayapas to 27.6% in Viche).
GENETIC POPULATION STRUCTURE OF TWO AFRICAN-AMERICAN COMMUNITIES OF ESMERALDAS (ECUADOR) / MARTINEZ LABARGA, C.; Rickards, O.; Scacchi, R.; Corbo, Rosa Maria; Biondi, G.; Pena, J. A.; MESA SANTURINO, S.; Guevara, A. E. B.; DE STEFANO, G. F.. - In: AMERICAN JOURNAL OF PHYSICAL ANTHROPOLOGY. - ISSN 0002-9483. - STAMPA. - 109:(1999), pp. 159-174. [10.1002/(SICI)1096-8644(199906)109:2<159::AID-AJPA2>3.0.CO;2-4]
GENETIC POPULATION STRUCTURE OF TWO AFRICAN-AMERICAN COMMUNITIES OF ESMERALDAS (ECUADOR)
CORBO, Rosa Maria;
1999
Abstract
The genetic structure of two African-Ecuadorian communities, Rio Cayapas and Viche (Esmeraldas province, northwest Ecuador), was studied on the basis of ACP1, ADA, AK1, CA2, ESD, GLO1, G6PD, PGD, and PGM1 subtypes and thermostability, PGM2, HB beta, F13A, F13B, ORM1, AHSG, C6, C7, and APOC2 gene frequency, and migration data on 255 individuals. The fixation index of Wright (F-ST), correspondence, and genetic distance analysis were applied to compare the genetic relationships between these communities and other American populations of African ancestry. FST values from the migration data and surname origins suggest that Rio Cayapas is genetically more isolated and shows less mobility and admixture than does Viche. The genetic admixture estimates indicate a large contribution of African genes to the gene pool of both communities (74.3% to 58.4%), whereas the proportion of the Amerindian component differs significantly (14.5% in Rio Cayapas to 27.6% in Viche).I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
