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[紫貂(Martes zibellina L.)两个圈养种群的微卫星分析]

[Microsatellite analysis of two captive populations of sable (Martes zibellina L.)].

作者信息

Kashtanov S N, Afanas'ev K I, Potapov S G, Lazebnyĭ O E

出版信息

Genetika. 2011 Dec;47(12):1622-8.

Abstract

The high value of sable (Martes zibellina L.) fur and stable demand for it over the centuries have led to suboptimal hunting patterns and, as a result, considerable fluctuations in the sizes of natural populations of this species. To maintain the traditional export of sable fur, efforts towards commercial domestication of sable have been made in Russia. The first farm population of sable consisted of animal from eight natural populations in 1929. After the problems related to breeding in captivity were solved, directional selection began. Eighty years of breeding have resulted in sable herds with homogeneous quantitative characters. Prospects for further breeding depend on the current level of genetic diversity in the captive populations of sables formed during the first stages of domestication. The sable populations of the Pushkinsky and Saltykovsky fur farms located in Moscow oblast, which were the objects of this study, are the progenitors of the existing captive populations. The first estimation of genetic variation of this species by means of a panel of microsatellite markers was developed for this study. Two captive sable populations were analyzed using ten microsatellite loci; a total of 75 alleles were found in both populations. Population-specific alleles were identified (6 and 13 in the Pushkinsky and Saltykovsky populations, respectively). The populations studied were found to be differentiated with respect to four microsatellite loci.

摘要

紫貂(Martes zibellina L.)皮毛价值高昂,且数百年来对其需求稳定,这导致了不合理的捕猎模式,结果是该物种自然种群数量出现大幅波动。为维持紫貂皮毛的传统出口,俄罗斯已致力于紫貂的商业驯化。1929年,首个紫貂养殖种群由来自八个自然种群的动物组成。在解决了圈养繁殖相关问题后,定向选育开始了。八十年的选育造就了具有均匀数量性状的紫貂种群。进一步选育的前景取决于驯化初期形成的紫貂圈养种群当前的遗传多样性水平。位于莫斯科州的普希金斯基和萨尔蒂科夫斯基皮毛养殖场的紫貂种群是本研究的对象,也是现有圈养种群的祖先。本研究首次利用一组微卫星标记对该物种的遗传变异进行了评估。使用十个微卫星位点对两个圈养紫貂种群进行了分析;在两个种群中总共发现了75个等位基因。确定了种群特异性等位基因(普希金斯基种群和萨尔蒂科夫斯基种群分别为6个和13个)。研究发现,所研究的种群在四个微卫星位点上存在差异。

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