Fig. 1

Analysis of the evolutionary relationship using the maximum parsimony (MP) method with 20 sequences. a Relationships at the DNA level. Tree #1 out of the 2 most parsimonious trees (length = 1616) is shown. The consistency index is (0.622642), the retention index is (0.696970), and the composite index is 0.515827 (0.433962) for all sites and parsimony-informative sites (in parentheses). There were a total of 1837 positions in the final dataset. b Relationships at the protein level. The most parsimonious tree, with length = 637, is shown. The consistency index is (0.750000), the retention index is (0.747664), and the composite index is 0.620901 (0.560748) for all sites and parsimony-informative sites (in parentheses). There were a total of 605 positions in the final dataset. The percentages of replicate trees in which the associated taxa clustered together in the bootstrap test (1000 replicates) are shown next to the branches. The tree is drawn to scale, with the length being relative to the number of changes over the entire sequence. The MP tree was obtained using the subtree-pruning-regrafting (SPR) algorithm with search level 1 in which the initial trees were obtained by the random addition of sequences (10 replicates). All positions containing gaps and missing data were eliminated. Analyses were conducted in MEGA 6 [44–47, 63]