Fig. 3

Molecular phylogenetic analysis by maximum likelihood method of the mitochondrial gene CytB. The evolutionary history was inferred by using the maximum likelihood method based on the Kimura 2-parameter model [54]. The tree with the highest log likelihood (− 5012.83) is shown. The percentage of trees in which the associated taxa clustered together is shown next to the branches (values < 60% are not shown). Initial tree(s) for the heuristic search were obtained automatically by applying the neighbour-joining and BioNJ algorithms to a matrix of pairwise distances estimated using the MCL approach, and then selecting the topology with superior log likelihood value. The tree is drawn to scale, with branch lengths measured in the number of substitutions per site. Host and country origin of the sequences are indicated. GenBank accession numbers are shown in brackets. Isolates from this study are written in bold font