info:ar-repo/semantics/artículo
New world goat populations are a genetically diverse reservoir for future use
Fecha
2019-02-06Autor
do Prado Paim, Tiago
Assis Faria, Danielle
Hay, El Hamidi
McManus, Concepta
Lanari, Maria Rosa
Chaverri Esquivel, Laura
Cascante, María Isabel
Jimenez Alfaro, Esteban
Mendez, Argerie
Faco, Olivardo
de Moraes Silva, Kleibe
Mezzadra, Carlos Alberto
Mariante, Arthur
Rezende Paiva, Samuel
Blackburn, Harvey David
Resumen
Western hemisphere goats have European, African and Central Asian origins, and some local or rare breeds are reported to be adapted to their environments and economically important. By-in-large these genetic resources have not been quantified. Using 50 K SNP genotypes of 244 animals from 12 goat populations in United States, Costa Rica, Brazil and Argentina, we evaluated the genetic diversity, population structure and selective sweeps documenting goat migration to the “New World”. Our findings suggest the concept of breed, particularly among “locally adapted” breeds, is not a meaningful way to characterize goat populations. The USA Spanish goats were found to be an important genetic reservoir, sharing genomic composition with the wild ancestor and with specialized breeds (e.g. Angora, Lamancha and Saanen). Results suggest goats in the Americas have substantial genetic diversity to use
in selection and promote environmental adaptation or product driven specialization. These findings highlight the importance of maintaining goat conservation programs and suggest an awaiting reservoir of genetic diversity for breeding and research while simultaneously discarding concerns about breed designations.