Table 4.
Components of sexual behavior of D. melanogaster from “Evolution Canyon” in single-choice tests
| Model | â1 | b̂1 | x̂1 | ŷ1 | â2 | b̂2 | x̂2 | ŷ2 | ln L(θ) | χ2 (df) | H0 | P |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| M1 = general (no restrictions) | 0.900 | 0.999 | 0.648 | 0.718 | 0.999 | 0.913 | 0.641 | 0.538 | −121.53 | |||
| M2 = full receptivity of NFS females and | ||||||||||||
| full activity of SFS males b1 = a2 = 1 | 0.900 | 1 | 0.648 | 0.718 | 1 | 0.912 | 0.641 | 0.538 | −121.53 | 0.00 (2) | M1 | NS |
| M3 = M2 and full receptivity of SFS females | 0.850 | 1 | 0.667 | 0.718 | 1 | 1 | 0.641 | 0.487 | −152.86 | 144.28 (1) | M2 | <10−6 |
| M4 = M2 and full activity of NFS males | 1 | 1 | 0.590 | 0.718 | 1 | 0.850 | 0.641 | 0.567 | −168.75 | 217.46 (1) | M2 | <10−6 |
| M5 = M2 and x1 = x2 | 0.901 | 1 | 0.644 | 0.718 | 1 | 0.912 | 0.644 | 0.539 | −121.54 | 0.05 (1) | M2 | NS |
| M6 = M2 and x2 = 0.5 and y2 = 0.5 | 0.898 | 1 | 0.649 | 0.718 | 1 | 0.915 | 0.5 | 0.5 | −122.98 | 6.68 (2) | M2 | 0.035 |
| M7 = M2 and x2 = 0.5 | 0.900 | 1 | 0.648 | 0.718 | 1 | 0.912 | 0.5 | 0.539 | −122.90 | 6.31 (1) | M2 | 0.012 |
| M8 = M2 and y1 = y2 | 0.906 | 1 | 0.646 | 0.636 | 1 | 0.905 | 0.641 | 0.636 | −122.61 | 4.97 (1) | M2 | 0.03 |
| M9 = M5 and y2 = 0.5 | 0.898 | 1 | 0.645 | 0.718 | 1 | 0.915 | 0.645 | 0.5 | −121.62 | 0.37 (1) | M5 | NS |
| M10 = M9 and y1 = 0.5 | 0.898 | 1 | 0.645 | 0.5 | 1 | 0.915 | 0.645 | 0.5 | −124.95 | 15.34 (1) | M9 | 0.0001 |
| M11 = M9 and x1 = x2 = 0.5 | 0.906 | 1 | 0.5 | 0.718 | 1 | 0.907 | 0.5 | 0.5 | −124.31 | 12.39 (1) | M9 | 0.0004 |
a1 and a2 denote the activity of NFS and SFS males; b1 and b2, receptivity of NFS and SFS females; x1 and x2, selectivity of NFS and SFS males; y1 and y2, selectivity of NFS and SFS females. M9 is the main model [with all nonsignificant (NS) parameters taken as constant, either 1 or 0.5].