Genetic diversity of Brazilian Pantaneiro horse and relationships among horse breeds

Pesquisa Agropecuária Brasileira

Fabiana Tavares Pires De Souza Sereno²  José Robson Bezerra Sereno¹  Jose Luis Vega-pla¹  Lucy Kelly¹  Juan Vicente Delgado Bermejo¹ 

[1] ,Universidade de Brasília Faculdade de Agronomia e Medicina Veterinária Brasília DF ,Brazil

关键词: Equus caballus;    animal conservation;    molecular markers;    microsatellites;    genetic resources conservation;    Equus caballus;    conservação animal;    marcadores moleculares;    microssatélites;    conservação de recursos genéticos;   

DOI  :  10.1590/S0100-204X2008000500007

来源: SciELO

【 摘 要 】

The objective of this work was to evaluate the genetic diversity of Brazilian Pantaneiro horse by microsatellite markers, investigate the effect of genetic bottlenecks and estimate genetic differentiation among four horse breeds. Genetic variation was estimated through allele frequencies and mean breed heterozygosity. Nei's genetic distances among the breeds Pantaneiro, Thoroughbred, Arabian, Spanish Pure Breed (Andalusian), and Uruguay Creole were calculated, and it was used to construct an UPGMA dendrogram. Clustering at different K values was calculated to infer population structure and assign individuals to populations. Nei's distances showed a minimum distance between Pantaneiro horse and Spanish Pure Breed (0.228), and similar distances from Spanish Pure Breed to Thoroughbred and to Arabian (0.355 and 0.332). It was observed a great level of diversity, clear distance from Pantaneiro horse to other breeds, and genetic uniformity within breed. It was verified a certain level of substructure of Pantaneiro horse showing no influences from the other studied breeds.

【 授权许可】

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