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 簡(jiǎn)要回顧了分子系統(tǒng)學(xué)的基本原理、研究方法、分析流程和系統(tǒng)發(fā)育分析方法等,以及多變量形態(tài)度量學(xué)特點(diǎn)與應(yīng)用、?科魚(yú)類(lèi)系統(tǒng)發(fā)育研究進(jìn)展,從而有助于理解本研究的方法、目的與意義。
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 運(yùn)用多變量形態(tài)度量學(xué)方法,研究東亞特有魚(yú)類(lèi)類(lèi)群?華鳊屬魚(yú)類(lèi)的形態(tài)差異,對(duì)其在分類(lèi)學(xué)上存在疑問(wèn)的物種的不同地理居群的18個(gè)框架測(cè)量距離、14個(gè)常規(guī)測(cè)量距離和7個(gè)可數(shù)性狀進(jìn)行了主成分分析。