Web of Science: 13 cites, Scopus: 14 cites, Google Scholar: cites,
The Southwestern fringe of Europe as an important reservoir of caprine biodiversity
Martinez, Amparo (Universidad de Córdoba. Departamento de Genética)
Telo da Gama, Luís (Universidade de Lisboa. Faculdade de Medicina Veterinária)
Delgado Bermejo, Juan Vicente (Universidad de Córdoba. Departamento de Genética)
Cañón Ferreras, Javier (Universidad Complutense de Madrid. Departamento de Producción Animal)
Amills i Eras, Marcel (Centre de Recerca en Agrigenòmica)
Bruno de Sousa, Carolina (Universidade do Algarve. Centro de Ciências do Mar)
Ginja, C. (Centro de Investigação em Biodiversidade e Recursos Genéticos)
Zaragoza, Pilar (Universidad de Zaragoza. Laboratorio de Genética Bioquímica)
Manunza, Arianna (Centre de Recerca en Agrigenòmica)
Landi, Vincenzo (Universidad de Córdoba. Departamento de Genética)
Sevane, N. (Universidad Complutense de Madrid. Departamento de Producción Animal)

Data: 2015
Resum: BACKGROUND: Portugal and Spain, with six and 22 officially recognized caprine breeds, encompass 25 % of the European Union goat census. Many of these populations have suffered strong demographic declines because of competition with exotic breeds and the phasing-out of low income rural activities. In this study, we have investigated the consequences of these and other demographic processes on the genetic diversity, population structure and inbreeding levels of Iberian and Atlantic goats. - METHODS: a sample of 975 individuals representing 25 officially recognized breeds from Portugal and Spain, two small populations not officially recognized (Formentera and Ajuí goats) and two ecotypes of the Tinerfeña and Blanca Celtibérica breeds were genotyped with a panel of 20 microsatellite markers. A wide array of population genetics methods was applied to make inferences about the genetic relationships and demography of these caprine populations. - RESULTS: genetic differentiation among Portuguese and Spanish breeds was weak but significant (FST = 0. 07; P < 0. 001), which is probably the consequence of their short splitting times and extensive gene flow due to transhumance. In contrast, Canarian goats were strongly differentiated because of prolonged geographic isolation. Most populations displayed considerable levels of diversity (mean He = 0. 65). - CONCLUSIONS: high diversity levels and weak population structures are distinctive features of Portuguese and Spanish breeds. In general, these local breeds have a reduced census, but are still important reservoirs of genetic diversity. These findings reinforce the need for the implementation of management and breeding programs based on genetic data in order to minimize inbreeding, maintain overall genetic and allelic diversities and breed identities, while at the same time taking into account the within-breed genetic structure.
Nota: Ajuts: The authors wish to express thanks to breeders associations and research groups who kindly provided biological samples used in this study. Members of the CYTED XII-H and CONBIAND networks are thanked for valuable cooperation over the years. This study has been partially supported by the Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria(INIA) RZ2004-00037-00-00, RZ2006- 00005-C02-00, RZ2007-00005-C02-01 and RZ2007-00005-C02-02 projects. CG was supported by a grant from the Fundação para a Ciência e a Tecnologia (Ref. SFRH/BCC/52687/2014). CBS was supported by a grant from the Fundação para a Ciência e a Tecnologia (Ref. SFRH/BM/1770/2004)
Drets: Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original. Creative Commons
Llengua: Anglès
Document: Article ; recerca ; Versió publicada
Publicat a: Genetics, selection, evolution, Vol. 47 (Nov. 2015) , art. 86, ISSN 1297-9686

DOI: 10.1186/s12711-015-0167-8
PMID: 26542127

13 p, 2.8 MB

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