Yang Yong, Zhang Ya-ping, Qian Yuan-huai, Zeng Qing-tao
College of Life Science, Hubei University, Wuhan 430062, China.
Mol Phylogenet Evol. 2004 Feb;30(2):336-43. doi: 10.1016/s1055-7903(03)00212-4.
Nucleotide sequences of the spacer region of the histone gene H2A-H2B from 36 species of Drosophila melanogaster species group were determined. The phylogenetic trees were reconstructed with maximum parsimony, maximum likelihood, and Bayesian methods by using Drosophila pseudoobscura as the out group. Our results show that the melanogaster species group clustered in three main lineages: (1). montium subgroup; (2). ananassae subgroup; and (3). the seven oriental subgroups, among which the montium subgroup diverged first. In the third main lineage, suzukii and takahashii subgroups formed a clade, while eugracilis, melanogaster, elegans, ficusphila, and rhopaloa subgroups formed another clade. The bootstrap values at subgroup levels are high. The phylogenetic relationships of these species subgroups derived from our data are very different from those based on some other DNA data and morphology data.
测定了黑腹果蝇种组36个物种的组蛋白基因H2A - H2B间隔区的核苷酸序列。以拟暗果蝇作为外类群，采用最大简约法、最大似然法和贝叶斯方法重建了系统发育树。我们的结果表明，黑腹果蝇种组聚为三个主要谱系：(1). 山地亚组；(2). 阿纳萨亚组；(3). 七个东方亚组，其中山地亚组最早分化。在第三个主要谱系中，铃木亚组和高桥亚组形成一个分支，而优美亚组、黑腹亚组、秀丽亚组、榕果蝇亚组和棒果蝇亚组形成另一个分支。亚组水平的自展值很高。我们数据中这些物种亚组的系统发育关系与基于其他一些DNA数据和形态学数据的关系非常不同。
