|Title:||Detecting the existence of gene flow between Spanish and North African goats through a coalescent approach||Authors:||Martínez, Amparo
Delgado, Juan Vicente
El Ouni, Mabrouk
Abushady, Asmaa M.
|Issue Date:||2016||Project:||SEV-2015-0533||Journal:||Scientific Reports||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.||URI:||http://hdl.handle.net/10553/48837||ISSN:||2045-2322||DOI:||10.1038/srep38935||Source:||Scientific Reports [ISSN 2045-2322], v. 6 (38935)|
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