摘要
角雉属Tragopan两性羽色不同,雄性具有艳丽的装饰性羽毛,这与一般雉族Phasianini相似;而尾较翅为短,尾羽的换羽从中央到外侧,这些特征又与鹑族Perdicini各属相同,形态特征上角雉属被划为鹑族。通过PCR扩增鸡形目Galliformes黄腹角雉Tragopancaboti等10个属19个个体的线粒体DNA细胞色素b的部分基因,获取片段长度为828bp,以及从GenBank获取22种样本的相应序列,以角叫鸭Anhimacornuta和海龟Kachugadhongoka为外群,分别用邻接法(Neighbor-joining,NJ)和最小进化法(Minimum-evolution,ME),对鸡形目和将雉科的15个属分为5个属及雉族和鹑族构建分子系统树,NJ和ME系统树中,都是角雉与雉类相聚。角雉出现形态解剖与基因分析分类地位的不一致,说明雉和鹑可能不是单系群。同时我们认为雌雄的色泽区别比尾羽的长短和换羽方式在对雉和鹑形态特征分类时更为重要。从分子水平分析的结果都是角雉属与雉聚类。因此角雉归为雉族更合理。
Like many pheasant species, Tragopan show sexual dimorphism with the males having colorful plumage and a wide range of ornamentation, but they are similar to partridges in other traits such as molt patterns tail （from center to outside） and the short tail relative to the wings. Because with both Galliform groups, of sharing characteristics Tragopans are classified as partridges by some authors and pheasants by some others. In this study we set out to sequence the cytochrome b-gene of 19 species pheasants, and took the sequence for those 22 species from GenBank. We amplified 828 base pairs using the PCR technique. Primers designed by ourselves were based upon Galliform sequence data. Neighbor-joining method （NJ-tree） and Minimum evolution method （ME-tree） were used to analyse cytochrome b sequences with Anhima cornuta and Kachuga Fifteen genera of Phasianidae are divided into two groups, partridges and pheasants. The analysis of the structure of the mtDNA phylogenetic trees based on the 33 Galliforms species and 2 outgroups, suggested that Tragopan belong to the Phasianini. We do not support the monophyly of Phasianidae. We suggest that taxonomic criteria for Phasianidae would be better based on the body color than based on the tail length and its molt patterns, and Tragopan belong to Physianini is more reasonable.
出处
《动物分类学报》
CSCD
北大核心
2006年第3期467-474,共8页
Acta Zootaxonomica Sinica
基金
国家自然科学基金重点项目(30530130).
关键词
雉科
角雉
细胞色素B
雉族
分类地位
Phasianidae, Tragopan, mtDNA cytb gene, Phasianini, Phylogeny.
