Table 3.

Evolutionary timescales of mandrill-speciation simian foamy viruses. The timescales were estimated under the FV–host co-speciation assumption by using the TDRP models: $\log \left(t\right)=\alpha +\beta \log \left(s\right)$; where $t$ and $s$ are time, and the corresponding number of substitutions per site, respectively. For env_LP/5′SU, $\alpha$ = 4.487 (95% HPD = 3.964–5.114), $\beta$ = 1.746 (95% HPD = 1.377–2.217); for env_cenSU, $\alpha$ = 4.114 (95% HPD = 3.827–4.383), $\beta$ = 1.762 (95% HPD = 1.556–1.985); for env_3′SU/TM, $\alpha$ = 4.522 (95% HPD = 4.098–4.973), $\beta$ = 1.553 (95% HPD = 1.273–1.892); and for pol, $\alpha$ = 4.681 (95% HPD = 4.100–5.320), $\beta$ = 1.419 (95% HPD = 1.093–1.820). See Section 5 for the nodes used in the TDRP model calibrations.

Genomic sequence	Evolutionary timescale (million years)
	Median	Upper bound 95% HPD	Lower bound 95% HPD
envLP/5 ′ SU	1.141	0.379	2.176
envcenSU clade I	1.075	0.546	1.708
envcenSU clade II	0.415	0.171	0.718
env3 ′ SU/TM	0.984	0.459	1.618
pol (integrase)	1.737	0.698	2.889