the fundamental principle, research method and analytical flow of molecular phlogenetics, and phylogenetic analysis are briefly reviewed . also the characteristic and application of multivariate morphometrics, as well as the phylogenetic investigation progress of sisorid fishes, are briefly reviewed too . the above help interpret the significance and methods of the present study 简要回顾了分子系统学的基本原理、研究方法、分析流程和系统发育分析方法等,以及多变量形态度量学特点与应用、?科鱼类系统发育研究进展,从而有助于理解本研究的方法、目的与意义。
multivariate morphometrics was conducted on the endemic asian genus sinibrama wu, 1939 in east asia in order to investigate the morphological variations among the 4 nominal species and subspecies known from south china . principal component analysis ( pca ) was performed respectively for seven meristic and thirty-two morphometric characters that were based on 224 specimens 运用多变量形态度量学方法,研究东亚特有鱼类类群?华鳊属鱼类的形态差异,对其在分类学上存在疑问的物种的不同地理居群的18个框架测量距离、14个常规测量距离和7个可数性状进行了主成分分析。