Phylogenetic trees based on different fragments of the mitochondrial DNA sequences: (A) first island of divergence only, (B) second island of divergence only, (C) first plus second islands of divergence, (D) without the two islands of divergence.

<p>The tree topologies obtained with Maximum likelihood and Bayesian inference are congruent. Two sequences of <i>H. taimen</i>, Ht5 and Ht16, representing haplotype group 1 and 2, are included. The <i>Salvelinus</i> and <i>Salmo</i> sequences (GenBank accession numbers in Materials and Methods) are used as outgroups. Note the changed position of <i>H. taimen</i> from the Hutou range (GenBank HQ897271), depending on the region used for the tree reconstruction.