Detecting the existence of gene flow between Spanish and North African goats through a coalescent approach.
Sci Rep
; 6: 38935, 2016 12 14.
Article
em En
| MEDLINE
| ID: mdl-27966592
ABSTRACT
Human-driven migrations are one of the main processes shaping the genetic diversity and population structure of domestic species. However, their magnitude and direction have been rarely analysed in a statistical framework. We aimed to estimate the impact of migration on the population structure of Spanish and African goats. To achieve this goal, we analysed a dataset of 1,472 individuals typed with 23 microsatellites. Population structure of African and Spanish goats was moderate (mean FST = 0.07), with the exception of the Canarian and South African breeds that displayed a significant differentiation when compared to goats from North Africa and Nigeria. Measurement of gene flow with Migrate-n and IMa coalescent genealogy samplers supported the existence of a bidirectional gene flow between African and Spanish goats. Moreover, IMa estimates of the effective number of migrants were remarkably lower than those calculated with Migrate-n and classical approaches. Such discrepancies suggest that recent divergence, rather than extensive gene flow, is the main cause of the weak population structure observed in caprine breeds.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Cabras
/
Fluxo Gênico
Limite:
Animals
País/Região como assunto:
Africa
/
Europa
Idioma:
En
Revista:
Sci Rep
Ano de publicação:
2016
Tipo de documento:
Article