Fig. 1

The Maximum Likelihood phylogenetic tree of the mtDNA (CytB + ND3) sequences of Coregonus spp. with node support from 500 bootstraps on branches. The geographical distribution of major branches is given. The 1-step nested clades are marked in colour. Representatives from Coregonus clupeaformis and Coregonus albula are included as the genetic outgroup. The recent obtained specimens of Coregonus spp. are indicated by FH and a black fish behind the name for the ones from the Netherlands and a blue fish for the one from the fish farm in Germany. Museum specimens of Coregonus spp. are indicated by MH with a red fish. The clades within the geographical distribution are given in brackets. The tree was drawn to scale, with branch lengths measured in the number of substitutions per site