Fig. 1

Likelihood mapping of the complete genome WNV-2 worldwide strains used in our study. Each dot represents the likelihood of three possible tree topologies for a group of four sequences (quartets) chosen randomly from the dataset. The dots localized close to the triangle vertices represent the tree-like phylogenetic signal. Those in the centre and on the laterals represent the star-like and network-like signals, respectively. The numbers inside the triangles represent the percentage of dots plotted in the centre, laterals, and the vertices