Skip to main content

Table 2 Model selection results from six Migrate models simulating introgression across three species boundaries

From: The origin of the parrotfish species Scarus compressus in the Tropical Eastern Pacific: region-wide hybridization between ancient species pairs

Model

M parameters

ln(mL)

LBF

Probability

1

Full model—all

− 4443.47

 

6.824E−87

2

Sp → Sg

Sp ← Sg

Sr → Sg

Sr ← Sg

− 4394.11

98.72

1.866E−65

3a

Sr → Sg

− 4339.68

108.86

8.119E−42

4a

Sp → Sg

− 4250.54

178.28

0.004

5

Sp → Sg

Sr → Sg

− 4247.52

6.04

0.086

6a

Sp Sg

Sp  Sg

− 4245.16

4.72

0.909

  1. Arrows specify the direction of introgression. Ln(mL) are the log marginal-likelihoods estimated using the Bezier approximation. Log Bayes factors (LBF) are calculated by comparing Model x with the Model x − 1
  2. Sp—S. perrico, Sr—S. rubroviolaceus, Sg—S. ghobban
  3. a Models 3, 4, and 6 include a constant low migration parameter (M = 0.001) to meet the assumptions of connectivity among all populations. Italic text indicates the best fitting model = Model 6