Mitochondrial DNA polymorphisms in subterranean mole-rats of the Spalax ehrenbergi superspecies in Israel, and its peripheral isolates.
Mitochondrial DNA polymorphisms in subterranean mole-rats of the Spalax ehrenbergi superspecies in Israel, and its peripheral isolates.
复制标题
以色列 Spalax ehrenbergi 超种地下鼹鼠及其外周分离株的线粒体 DNA 多态性。
DOI：
--
复制
发表时间：
1993
影响因子：
10.7
通讯作者：
N. Hanzawa
中科院分区：
文献类型：
--
作者：
E. Nevo;R. Honeycutt;H. Yonekawa;K. Nelson;N. Hanzawa
对构成以色列 Spalax ehrenbergi 超种所有四种染色体种类（2n = 52、2n = 54、2n = 58 和 2n = 60）的 133 只鼹鼠以及 2n = 60 的外周分离株的线粒体 DNA (mtDNA) 变异模式进行了检查。在复合体的主要范围内，总共有 28 个 mtDNA在 64 只鼹鼠中发现了单倍型，其中大多数单倍型对于单个染色体物种或群体来说是独特的。在以色列，mtDNA 分歧从北向南方向从低到高二倍体数量增加。出人意料的是，2n = 60（该复合体中最年轻的物种）的线粒体DNA多样性总体水平最高。 mtDNA 单倍型可分为两个主要组，2n = 52-54 和 2n = 58-60，对每个组的系统发育分析揭示了一些单倍型未按二倍体数量排序的证据。四种染色体物种内部和之间的 mtDNA 分歧的总体模式与先前对等位酶和 DNA 杂交的研究表明的物种形成模式一致。在一个单独的数据集中，对 2n = 60 染色体物种的主要地理范围以及外围半分离株和分离株的 mtDNA 变异模式进行了检查。在 69 只鼹鼠中发现了 15 种单倍型。主要分布区、半孤立种群、甚至一些沙漠孤立种群都具有高水平的线粒体DNA多样性。外周分离株含有大量线粒体 DNA 多样性，包括新的单倍型。
Patterns of mitochondrial DNA (mtDNA) variation were examined in 133 mole-rats constituting all four chromosomal species (2n = 52, 2n = 54, 2n = 58, and 2n = 60) of the Spalax ehrenbergi superspecies in Israel, as well as the peripheral isolates of 2n = 60. In the main range of the complex, a total of 28 mtDNA haplotypes were found in 64 mole-rats, with most haplotypes being unique to either a single chromosomal species or population. mtDNA divergence increased from low to high diploid number in a north-to-south direction in Israel. Overall levels of mtDNA diversity were unexpectedly the highest in the 2n = 60, the youngest species of the complex. The mtDNA haplotypes can be separated into two major groups, 2n = 52-54 and 2n = 58-60, and a phylogenetic analysis for each group revealed evidence of a few haplotypes not sorted by diploid number. The overall patterns of mtDNA divergence seen within and among the four chromosomal species are consistent with the parapatric mode of speciation as suggested from previous studies of allozyme and DNA hybridization. In a separate data set the patterns of mtDNA variation were examined across the main geographic range and across peripheral semi-isolates and isolates of the 2n = 60 chromosomal species. Fifteen haplotypes were found in 69 mole-rats. High levels of mtDNA diversity characterized the main range, semi-isolated, and even some desert isolated populations. The peripheral isolates contain much mtDNA diversity, including novel haplotypes.
影响因子：
3.3
作者：
M. Nei;F. Tajima
通讯作者：
M. Nei;F. Tajima