Anderson Eric C, Slatkin Montgomery
Fisheries Ecology Division, Southwest Fisheries Science Center, 110 Shaffer Road, Santa Cruz, California 95060, USA.
Evolution. 2007 Apr;61(4):972-83. doi: 10.1111/j.1558-5646.2007.00080.x.
A method for estimating the number of founding chromosomes in an isolated population is introduced. The method assumes that n/2 diploid individuals are sampled from a population and that alleles are identified at L unlinked loci. The population is assumed to have been founded T generations in the past by individuals carrying c chromosomes drawn randomly from a known source population, which has also been sampled. If c is small and the population grew rapidly after it was founded, accurate estimates of c can be obtained and those estimates are not sensitive to details of the history of population sizes. If c is larger or the population remained small after it was founded, then estimates of c depend on the history of population sizes. We test the performance of our method on simulated data and demonstrate its use on data from a rainbow trout (Oncorhynchus mykiss) population.
介绍了一种估计隔离种群中奠基染色体数量的方法。该方法假定从一个种群中抽取n/2个二倍体个体，并在L个不连锁基因座上鉴定等位基因。假定该种群在过去T代由携带c条染色体的个体建立，这些个体是从一个已知的源种群中随机抽取的，且该源种群也已被抽样。如果c很小且种群在建立后迅速增长，就可以获得c的准确估计值，并且这些估计值对种群大小历史的细节不敏感。如果c较大或种群在建立后一直保持较小规模，那么c的估计值就取决于种群大小的历史。我们在模拟数据上测试了我们方法的性能，并展示了其在虹鳟（Oncorhynchus mykiss）种群数据中的应用。
