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Species tree of the fish-associated PyVs. (a) Unrooted Bayesian species tree was based on the T-Ag, VP1 and VP2 protein sequences. Nodes with posterior support less than 0.7 were collapsed. English host names are used to refer to the associated fish PyVs. (b) DensiTree representation of the tree in (a) shows the highly uncertain evolutionary history of the perciform fish PyVs. The solid blue line represents the root canal, which helps to focus on the main features of the tree set.
