Table 1.
Estimated demographic parameters with IMa2
| HiPt | HPD 95% | |
|---|---|---|
| q0 (4Neu Pachón) | 0.300 | 0.300–2.300 |
| q1 (4Neu Surface) | 21.500 | 13.300–32.700 |
| q2 (4Neu Ancestral) | 89.700 | 64.700–146.500 |
| t0 (tu) | 0.730 | 0.186–2.602 |
| m0 > 1 (m0- > 1/u) | 1.702 | 0.948–4.232 |
| m1 > 0 (m1- > 0/u) | 0.013 | 0.000–0.308 |
| Ne Pachón | 150 | 150–1150 |
| Ne Surface | 10,750 | 6650–16,350 |
| Ne ancestral | 44,850 | 32,350–73,250 |
| t | 5110 | 1302–18,214 |
| mS- > P | 8.5 × 10− 4 | 4.7–21.2 × 10− 4 |
| mP- > S | 6.5 × 10− 6 | 0.0–1.5 × 10− 4 |
We assumed a mutation rate (u) of 0.0005 and a mean generation time (g) of 3.5 years (2 years for surface fish and 5 years for cavefish). HiPt: the highest value in the histogram of the posterior marginal density. HPD 95%: the lower and upper bound of the estimated 95% highest posterior density (HPD) interval. Effective population size (Ne) Pachón = q0 / 4u; Ne surface = q1 / 4u; Ne ancestral = q2 / 4u; t (divergence time in years) = t0 x g / u; mS- > P (migration rate from surface to Pachón) = m0 > 1 x u; mP- > S (migration rate from Pachón to surface) = m1 > 0 x u. m0 > 1 and m1 > 0 are migration rate backward in time, whereas mS- > P and mP- > S are migration rate forward in time