Yan Xiu Ying, Zeng Qing Tao, Yang Yong, Qian Yuan Huai
College of Life Science, Hubei University, Wuhan 430062, China.
Fen Zi Xi Bao Sheng Wu Xue Bao. 2006 Jun;39(3):277-80.
In order to investigate molecular phylogenetic relationships of Drosophila immigrans species group, nucleotide sequences of H2a-H2b spacer regions and partial nucleotide sequences of Cytochrome b gene for five specieses subgroup in Drosophila immigrans species group and D. hydei which was selected as outgroup were acquired. Phylogenetic trees were reconstructed using maximum parsimony, maximum likelihood, neighbor joining and Bayesian methods based on H2a-H2b and Cyt b DNA sequences. The results indicated that Drosophila curviceps species subgroup is located at the base of molecular trees, diverged first in this group; the second clade is Drosophila quadrilineata species subgroup; the third is Drosophila hypocausta species subgroup; the fourth is Drosophila immigrans species subgroup; Drosophila nasuta species subgroup is the last diverged clade. Moreover, the phylogentic relationships of seven specieses in Drosophila nasuta subgroup was investigated.
为了研究黑腹果蝇物种组的分子系统发育关系，获取了黑腹果蝇物种组中五个亚组以及被选作外群的海德氏果蝇的H2a - H2b间隔区核苷酸序列和细胞色素b基因的部分核苷酸序列。基于H2a - H2b和Cyt b DNA序列，使用最大简约法、最大似然法、邻接法和贝叶斯方法重建了系统发育树。结果表明，弯翅果蝇亚组位于分子树的基部，是该组中最先分化出来的；第二个分支是四线果蝇亚组；第三个是低突果蝇亚组；第四个是黑腹果蝇亚组；纳苏果蝇亚组是最后分化出来的分支。此外，还研究了纳苏果蝇亚组中七个物种的系统发育关系。
