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metadata.dc.type: Artigo de Periódico
Issue Date: Jun-1999
metadata.dc.creator: GUERREIRO, João Farias
SANTOS, Ândrea Kely Campos Ribeiro dos
SANTOS, Eduardo José Melo dos
VALLINOTO, Antonio Carlos Rosário
VALLINOTO, Izaura Maria Vieira Cayres
AGUIAR, Gilberto Ferreira de Souza
SANTOS, Sidney Emanuel Batista dos
Title: Genetical-demographic data from two amazonian populations composed of descendants of african slaves: Pacoval and Curiau
Citation: GUERREIRO, João Farias et al. Genetical-demographic data from two amazonian populations composed of descendants of african slaves: Pacoval and Curiau. Genetics and Molecular Biology, São Paulo, v. 22, n. 2, p. 163-167, jun. 1999. Disponível em: <>. Acesso em: 28 dez. 2012. <>.
Abstract: The Amazon region of Brazil includes communities founded by escaped slaves, some of which still remain relatively isolated. We studied two such Afro-Brazilian communities (Pacoval and Curiau), in the rural area of Alenquer, Pará, and in the metropolitan region of Macapá, Amapá, respectively. Among 12 blood loci, alleles considered as markers of African ancestry, such as HBB*S, HBB*C, TF*D1, HP*2M, ABO*B, RH*D-, and CA2*2 were found at frequencies that are expected for populations with a predominantly African origin. Estimates of interethnic admixture indicated that the degree of the African component in Curiau (74%) is higher than that of Pacoval (44%); an Amerindian contribution was not detected in Curiau. Estimated values of African ancestry fit well with the degree of isolation and mobility of the communities. Pacoval exhibited a high proportion of immigrants among the parents and grandparents of the individuals studied, whereas persons living in Curiau exhibited a low level of mobility, despite its location in the metropolitan area of Macapá city, suggesting a relatively strong barrier against the interethnic admixture in this population. In addition, analysis of genetic data in a sub-sample consisting of individuals whose parents and grandparents were born in the study site, and that probably represents the populations two generations ago, indicated that gene flow from non-black people is not a recent event in both populations.
Keywords: Miscigenação
Escravo africano
Pacoval - PA
Curiaú - AP
Alenquer - PA
Macapá - AP
Amapá - Estado
Pará - Estado
Amazônia brasileira
ISSN: 1415-4757
metadata.dc.rights: Acesso Aberto
Appears in Collections:Artigos Científicos - ICB

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