Genetic variation within and relatedness among wood and plains bison populations
Genetic variation within and relatedness among wood and plains bison populations
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DOI：
10.1139/gen-42-3-483
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发表时间：
1999-06-01
期刊：
影响因子：
3.1
通讯作者：
Strobeck, C
中科院分区：
文献类型：
--
作者：
Wilson, GA;Strobeck, C
野牛有两个公认的亚种，木（野牛野牛athabascae）和平原（野牛野牛野牛）野牛。大多数野牛种群是由少数个体建立起来的，这引起了人们对它们遗传变异的担忧。为此，11个野牛群体进行了调查，11个微卫星位点，以计算遗传变异和遗传距离。等位基因的平均数介于羚羊岛州立公园（犹他州）的3.18和伍德布法罗国家公园（阿尔伯塔和西北地区）的6.55之间。平均杂合度范围从羚羊岛州立公园的0.295到卡斯特州立公园（南达科他州）的0.669。野牛种群中存在的遗传变异量的等位基因的平均数和整体概率的身份被发现与所有采样种群的创始人的数量。异质性的G-检验揭示了一些证据的存在亚群在伍德布法罗国家公园，但这些亚群之间的遗传距离非常小，表明从平原野牛引入到伍德布法罗国家公园的核物质已经扩散到整个公园。两个野牛亚种之间的遗传距离普遍大于两个亚种之间的遗传距离。
There are two recognized subspecies of bison, wood (Bison bison athabascae) and plains (Bison bison bison) bison. The establishment of most bison populations from a small number of individuals has raised concerns about their genetic variation. To this end, 11 bison populations were surveyed with 11 microsatellite loci in order to calculate genetic variation and genetic distances. Mean number of alleles ranged between 3.18 at Antelope Island State Park (Utah) and 6.55 at Wood Buffalo National Park (Alberta and Northwest Territories). Mean heterozygosity ranged from 0.295 at Antelope Island State Park to 0.669 at Custer State Park (South Dakota). The amount of genetic variability present in the bison populations as measured by mean number of alleles and overall probability of identity was found to correlate with the number of founders for all sampled populations. The G-test for heterogeneity revealed some evidence for the existence of subpopulations at Wood Buffalo National Park, however very small genetic distances between these subpopulations suggest that nuclear material from the plains bison introduced into Wood Buffalo National Park has diffused throughout the park. Genetic distances between the sampled populations were generally larger between than within the two bison subspecies.