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首页> 外文期刊>Spanish Journal of Agricultural Research >Inference of hidden population substructure of the Iberian pig breed using multilocus microsatellite data
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Inference of hidden population substructure of the Iberian pig breed using multilocus microsatellite data

机译：利用多位点微卫星数据推断伊比利亚猪品种的隐藏种群亚结构

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The census and structure of Iberian pig breed have experienced important changes along the last decades. Bayesian methods based on multilocus genotypes have been applied for ascertaining the actual breed structure and for identifying genetically distinctive populations. DNA samples from 170 Iberian pigs previously assigned to the strains or varieties Torbiscal, Guadyerbas, Retinto, Entrepelado and Lampi?o and 64 Duroc pigs were genotyped for 36 microsatellites. A best partition of only five clusters was estimated in the clustering analysis at group level, when the previous assignation to populations was taken into account. But the individual-based assessment of population structure, ignoring the previous assignation of animals to populations, showed a more complex partition of ten clusters. Results of admixture analyses for artitioning individuals into the inferred clusters showed an important proportion of admixed individuals pre-assigned to the Retinto, Entrepelado and Lampi?o varieties. The frequencies of private alleles of the MC1R gene also evidenced an important genetic flow between these varieties. The future definition of conservation units in the Iberian breed should consider these results.
机译：在过去的几十年中，伊比利亚猪品种的普查和结构发生了重要变化。基于多基因座基因型的贝叶斯方法已被用于确定实际的品种结构和鉴定遗传上独特的种群。从170只伊比利亚猪的DNA样本中进行了基因分型，这些伊比利亚猪先前被指定为Torbiscal，Guadyerbas，Retinto，Entrepelado和Lampi？o品系或变种，并对64头杜洛克猪进行了36个微卫星的基因分型。当考虑到先前分配给种群时，在聚类分析中在组级别上估计只有五个聚类的最佳划分。但是，基于个体的种群结构评估忽略了先前将动物分配给种群的情况，显示出十个簇的分配更为复杂。将个体划分为推断群的混合分析结果表明，预先分配给Retinto，Entrepelado和Lampi？o品种的混合个体中有很大比例。 MC1R基因的私人等位基因的频率也证明了这些品种之间的重要遗传流动。伊比利亚品种未来的保护单位定义应考虑这些结果。

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