Table 8. Analyses of selection on Teleost rhodopsin (rh1) using PAML random sites models.
| Model | lnL | Parameters1† | Null | P [df]† | Δ AIC§ | ||
|---|---|---|---|---|---|---|---|
| ω0/p | ω1/q | ω2/ωp | |||||
| M0 | −32949.46 | 0.10 | - | - | N/A | - | 4489.79 |
| M1a | −31605.10 | 0.05 (86%) | 1.00 (14%) | - | M0 | 0.000 [1] | 1803.10 |
| M2a | −31605.10 | 0.05 (86%) | 1.00 (10%) | 1.00 (4%) | M1a | 1 [2] | 1807.10 |
| M3 | −30887.40 | 0.01 (58%) | 0.13 (29%) | 0.57 (13%) | M0 | 0.000 [4] | 373.67 |
| M8a | −30790.44 | 0.28 | 3.05 | 1.00 | N/A | - | 173.76 |
| M7 | −30767.11 | 0.19 | 0.68 | - | N/A | - | 127.10 |
| M8 | −30702.57 | 0.25 | 1.62 | 1.92 | M7 | 0.000 [2] | 0* |
| M8a | 0.000 [1] | ||||||
1ω values of each site class are shown are shown for model M0-M3 (ω0– ω2) with the proportion of each site class in parentheses. For M7 and M8, the shape parameters, p and q, which describe the beta distribution are listed instead. In addition, the ω value for the positively selected site class (ωp, with the proportion of sites in parentheses) is shown for M8.
2Significant p-values (α ≤0.05) are bolded. Degrees of freedom are given in square brackets after the p-values.
3#§Model fits were assessed by Akaike information criterion differences to the best fitting model (asterisk).
Abbreviations—lnL, ln Likelihood; p, p-value; N/A, not applicable.