Skip to main content

Table 1 Estimated demographic parameters with IMa2

From: Evidence for late Pleistocene origin of Astyanax mexicanus cavefish

 

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

  1. 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