FIGURE 5.

Bayesian phylogeographic analysis of 24 bird deltacoronaviruses strain sequences based on RdRp gene. Maximum clade credibility (MCC) tree with ancestral state reconstruction according to a discrete trait model, the substitution model was GTR + F + R3 which obtained by Model Finder under the BIC standard, the colours of branch and internal nodes indicated the most probable state reconstruction. The numbers on branch indicated posterior probability, and the time of divergence estimated was marked near the internal node. The root state posterior probabilities estimated for each regions of Bayesian phylogeographic MCC tree, which were inferred using an asymmetric substitution model.