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边际多样性方法及其在绵羊品种保护中的应用 预览 被引量:9

Marginal diversity and its application to Chinese sheep breeds conservation
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摘要 本文介绍了边际多样性方法,并利用微卫星DNA遗传距离、灭绝概率等结果分析了中国北方11个绵羊品种的品种贡献率、边际多样性及保护潜力.结果表明,苏尼特羊(Sunite sheep)的边际多样性最高(-0.2008),其次为滩羊(Tan sheep)(-0.1932)、兰州大尾羊(Lanzhou large tailed sheep)(-0.1843);岷县黑裘皮羊(Minxian black fur sheep)最低(-0.1268).保护潜力最大的品种为兰州大尾羊(0.1419),其为同羊(Tong sheep)(0.1017),最小的为小尾寒羊(Small tailed Han sheep)(0.0365).根据边际多样性方法,作者认为确定需要保护的品种应该依据最大保护潜力而不是品种的濒危程度.11个绵羊品种的保护顺序依次是兰州大尾羊、同羊、汉中羊(Hanzhong sheep)、甘家羊(Ganjia sheep)、欧拉羊(Oula sheep、岷县黑裘皮羊、乔科羊(Qiaoke sheep)、苏尼特羊、乌珠穆沁羊(Ujumqi sheep)和小尾寒羊. This paper introduced an approach of marginal diversity, and evaluated the contribution, marginal diversity and conservation potency of each of the 11 sheep breeds from northern China based on genetic distance and extinction probability. The results showed that the marginal diversity of Sunite sheep was the highest (-0.2008), Tan sheep (-0.1932) and Lanzhou large tailed sheep (-0.1843) the next, and Minxian black fur sheep the lowest (-0.1268). The conservation potency of Lanzhou barge tailed sheep was the highest (0.1419), the second was Tong sheep (0.1017), and small tailed Han sheep was the lowest (0.0365). Our result suggested that the optimum conservation strategy is to give priority to those breeds with the highest conservation potency,rather than to the most endangered breeds; thus, Lanzhou large tailed sheep and Tong sheep should be given conservation priority.
作者 马月辉 Yuehui Ma * Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100094
出处 《生物多样性》 CAS CSCD 北大核心 2005年第1期 70-74,共5页 Biodiversity Science
基金 国家自然科学基金,科技部基础性工作项目
关键词 边际多样性 绵羊 品种保护 品种贡献率 保护潜力 畜禽种质资源 animal genetic resources, marginal diversity, conservation strategy
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参考文献11

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