Figure 3.

Evolutionary relationships within the family Parvoviridae reconstructed via phylogenetic analysis of the tripartite helicase domain. The four major splits within the Parvoviridae are indicated in the tree as follows: (i) Parvovirinae (ii) Densovirinae (excluding genera He­pan-, Brevi-, and Penstyldensovirus, abbreviated as HBP); (iii) HBP; (iv) Chapparvovirus (ChPV-related viruses and EPVs). Brackets to the right indicate taxonomic groups. The names of established genera are shown in bold italics in the abbreviated form (i.e., with the suffix “parvovirus” omitted). The scale bar shows evolutionary distance in substitutions per site. Numbers adjacent to tree nodes show bootstrap support (based on 100 bootstrap replicates) where >70%.