Morphological variations in Amur weatherfish Misgurnus mohoity,northern weatherfish Misgurnus bipartitus and oriental weatherfish Misgurnus anguillicaudatus in China
LI Ya-juan,ZHANG Ming-zhao,YU Zhuo,PANG Yi-meng,QIAN Cong,ARAI Katsutoshi
1.Key Laboratory of Mariculture,Agriculture Ministry,PRC,Dalian Ocean University,Dalian 116023,China;2.Graduate School of Fisheries Sciences,Hokkaido University,Hokkaido 041-8611,Japan
Abstract: Eleven morphometrical items were measured to evaluate the morphological variations in Amur weatherfish Misgurnus mohoity,northern weatherfish Misgurnus bipartitus and oriental weatherfish Misgurnus anguillicaudatus by three methods of multivariate analysis.Cluster analysis showed that northern weatherfish was close to oriental weatherfish,and distantly related to Amur weatherfish in genetic relationship.The principal component analysis revealed that the contributory ratio was 50.430% for the principal component 1,20.880% for the principal component 2 and 10.381% for the principal component 3,with the cumulative contributory ratio of 81.691%.Discriminant analysis showed that three discrimination functions and the discrimination accuracy were 71.4%-100% for P1and 71.4%-100% for P2,the integrative discrimination accuracy being 80.8%.