Fig. 5From: Postglacial recolonizations, watershed crossings and human translocations shape the distribution of chub lineages around the Swiss AlpsPositions of individual fish relative to the first and second principal component axes derived from the correlation matrix of traditional morphometric traits. Individuals are color-coded by drainage: green = Rhone, black = Rhine, blue = Danube (European chub, Squalius cephalus) and red = Po (Italian chub, S. squalus). Italian chub possessing the mitochondrial haplotype E are indicated by red trianglesBack to article page