Kan X-Z, Yang J-K, Li X-F, Chen L, Lei Z-P, Wang M, Qian C-J, Gao H, Yang Z-Y
The Provincial Key Laboratory of the Conservation and Exploitation Research of Biological Resources in Anhui, College of Life Sciences, Anhui Normal University, Wuhu, China.
Genet Mol Res. 2010 Aug 17;9(3):1625-33. doi: 10.4238/vol9-3gmr898.
Complete mitochondrial DNA sequences have been used successfully to estimate phylogenetic relationships among animal taxa, and for studies of population genetics and molecular evolution. We made phylogenetic analyses of 22 species of Galliformes, with two species of Anseriformes as outgroups, using maximum likelihood (ML), maximum parsimony (MP) and Bayesian inference (BI) methods based on the nucleotide dataset and the corresponding amino acid dataset of 13 concatenated protein-coding genes. The consensus phylogenetic trees supported monophyly of Galliformes, Phasianidae (nucleotide and amino acid: posterior probabilities 1.00 in BI, bootstrap value > 99% in ML and MP), Coturnicinae, and Gallininae (nucleotide and amino acid: posterior probabilities 1.00 in BI, bootstrap value > 85% in ML and MP), but failed to demonstrate monophyly of Pavoninae and Phasianinae. Our results also support a sister-group relationship between megapodes and all other galliforms. We found that Arborophilinae is basal to the balance of the Phasianidae. Moreover, we suggest that the turkey should be classified in the Phasianinae of Phasianidae. Although the relationships among the various lineages of the Galliformes remain controversial, these results should be useful for further study.
完整的线粒体DNA序列已成功用于估计动物类群之间的系统发育关系，以及用于种群遗传学和分子进化研究。我们以两种雁形目鸟类作为外类群，对22种鸡形目鸟类进行了系统发育分析，采用基于13个串联蛋白质编码基因的核苷酸数据集和相应氨基酸数据集的最大似然法（ML）、最大简约法（MP）和贝叶斯推断法（BI）。共识系统发育树支持鸡形目、雉科（核苷酸和氨基酸：BI中后验概率为1.00，ML和MP中自展值>99%）、雪鸡亚科和鹑亚科（核苷酸和氨基酸：BI中后验概率为1.00，ML和MP中自展值>85%）的单系性，但未能证明孔雀亚科和雉亚科的单系性。我们的结果还支持冢雉与所有其他鸡形目鸟类之间的姐妹群关系。我们发现树鹑亚科是雉科其他类群的基部类群。此外，我们建议将火鸡归类于雉科的雉亚科。尽管鸡形目各谱系之间的关系仍存在争议，但这些结果应有助于进一步研究。
