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首页> 外文期刊>Journal of genetics >Potential emigration of Siberian cattle germplasm on Chirikof Island, Alaska
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Potential emigration of Siberian cattle germplasm on Chirikof Island, Alaska

机译：西伯利亚牛种质的潜在移民在Chirikof Island，阿拉斯加

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Feral cattle residing in Chirikof Island, Alaska, are relatively distinct from breeds used in commercial production in North America. However, preliminary evidence suggested that they exhibit substantial genetic relationship with cattle from Yakutian region of Siberia. Thus, our objective was to further elucidate quantify the origins, admixture and divergence of the Chirikof Island cattle relative to cattle from Siberia and USA. Subject animals were genotyped at 15 microsatellite loci. Compared with Turano-Mongolian and North American cattle, Chirikof Island cattle had similar variation, with slightly less observed heterozygosity, fewer alleles per locus and a positive fixation index. Analysis of the genetic distances revealed two primary clusters; one that contained the North American breeds and the Kazakh White head, and a second that contained the Yakutian and Kalmyk breeds, and the Chirikof population. Thus, it is suggested that Chirikof Island cattle may be a composite of British breeds emanating from North America and Turano-Mongolian cattle. A potential founder effect, consistent with historical records of the Russian-American period, may contribute to the adaptation of the Chirikof Island cattle to their harsh high-latitude environment. Further study of adaptive mechanisms manifest by these cattle is warranted.
机译：驻留在阿拉斯加的Chirikof Island岛的野牛，与北美商业生产中使用的品种相对不同。然而，初步证据表明，他们与西伯利亚雅库特地区的牛与牛表现出大量的遗传关系。因此，我们的目标是进一步阐明潜水岛牛相对于西伯利亚和美国的牛的起源，混合物和分歧。受试者在15个微卫星基因座的基因分型。与蒙古和北美牛相比，Chirikof岛牛的变异相似，观察到的杂合性略低，每个基因座的等位基因较少，阳性固定指标。遗传距离的分析显示出两个初级簇;其中一个含有北美品种和哈萨克白头的，第二个包含雅库特和卡尔梅克品种的第二种，以及人口的肾小球。因此，有人建议，肾小球岛牛可能是来自北美和蒙古牛的英国品种的综合。潜在的创始效应，与俄语期间的历史记录一致，可能有助于将奇利克岛牛的适应适应其恶劣的高纬度环境。有必要进一步研究这些牛的自适应机制。

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