Phylogenetic trees for the HEVs based on a specific HEV gene (A) <i>versus</i> the HEV barcodes (B).

<p>The edge lengths in the trees reflect the genetic distance calculated according to the Kimura-parameter model. The VP1-based tree's reliability was estimated using 1,000 bootstrap replications. The serotype names beside the trees denote what the serotypes of the species having HEVs.