Figure 2.

Phylogenetic trees constructed using coding sequences from segments L1, L2, L3, M1, M3, S2, S3, and S4 from 31 PRV-1 isolates. The North American Pacific Coast (NAPC) sequences consistently group together for all gene segments forming a monophyletic cluster. In contrast, the grouping of the Norwegian, Chilean, and Faroe Island isolates may vary from segment to segment. Color coding as in Figure 1 legend. Sequences obtained in the present study shown in bold. * denotes isolates from coho and ** from Chinook salmon. # indicates PRV from BC HSMI longitudinal farm study