Fig. 1

Trypanosoma phylogeny constructed using maximum likelihood (ML) estimations based on the 18S rRNA gene sequence (1305 unambiguously aligned bp; best-fit approximation for the evolutionary model: general time-reversible [GTR]) including Trypanosoma sequences obtained in this study (in bold). The 10 major Trypanosoma clades are indicated [2]. For members of the T. pestanai clade, origin of the Trypanosoma sequences (i.e., from ticks, mammals either marsupials or placentals) is shown by black squares, while host species and geographical origin are listed next to the name of Trypanosoma species or strain. GenBank accession numbers of sequences used in analyses are shown on the phylogenetic trees. Numbers at nodes indicate percentage support of 1000 bootstrap replicates. Only bootstrap values >70% are shown