Origem e diversidade genética materna de populações de bovinos da raça curraleira de diferentes regiões do Brasil
Carregando...
Data
2011
Título da Revista
ISSN da Revista
Título de Volume
Editor
Resumo
Analysis of mitochondrial DNA (mtDNA) has been used as a molecular tool for
understanding the origin and nature of domestication processes, analysis of dispersal
and gene flow, analysis of demographic expansion, genetic drift and admixture
between populations. The Curraleiro bovine breed was originated in the animals
introduced by the Iberian settlers and became adapted to the sanitary conditions,
climate and management found in Brazil. The objective of this study was to investigate
the genetic diversity of this breed by sequencing and analysis of mtDNA control
region. We analyzed twelve animals from five distinct regions. Three haplogroups
were observed: two of African taurine origin (AA and T1) and one of European taurine
origin (T3). The nucleotide diversity observed was 0.013. The highest haplotype
diversity was observed within populations (0.012) and not between populations
(0.001). The differentiation index observed was 0.074. No significant genetic
differences were found among populations in different regions. It was concluded that
the Curraleiro populations have the same maternal origin and suffered influence of
African taurine animals.
Descrição
Palavras-chave
mtDNA, Diversidade haplotípica, Estudos populacionais, Haplotype diversity, Population studies
Citação
EGITO, A. A.; FIORAVANTI, M. C. S.; GRATTAPAGLIA, D.; RAMOS, A. F.; ALBUQUERQUE, M. S. M.; MARIANTE, A. S. Origem e diversidade genética materna de populações de bovinos da raça Curraleira de diferentes regiões do Brasil. Actas Iberoamericanas de Conservacion Animal, Córdoba, v. 1, p. 110-113, 2011.