Table 3 Correlation of genital morphology with mating angle and tilting index, at 10–15 min after the start of copulation
From: Drosophila pachea asymmetric lobes are part of a grasping device and stabilize one-sided mating
Treatment | Mating angle | Tilting index | |
|---|---|---|---|
Unmodified wild-type (n = 11) | Left epandrial lobe length | ρ = −0.02, P > 0.5 | ρ = −0.15, P > 0.5 |
Right epandrial lobe length | ρ = 0.78, P = 0.007 | ρ = 0.32, P = 0.341 | |
Sum of left and right lobe lengths | ρ = 0.33, P = 0.327 | ρ = 0.29, P = 0.386 | |
Ratio of left and right lobe lengths | ρ = −0.54, P = 0.089 | ρ = −0.30, P = 0.369 | |
Tibia length | ρ = −0.03, P > 0.5 | ρ = 0.51, P = 0.094 | |
Unmodified wild-types from present study combined with data from [24] (n = 23) | Left epandrial lobe length | ρ = 0.06, P > 0.5 | not recorded by Lang & Orgogozo (2012) |
Right epandrial lobe length | ρ = 0.36, P = 0.088 | ||
Sum of left and right lobe lengths | ρ = 0.17, P = 0.445 | ||
Ratio of left and right lobe lengths | ρ = −0.26, P = 0.222 | ||
Left lobe cut (n = 12) | Left epandrial lobe length | ρ = 0.38, P = 0.218 | ρ = 0.22, P = 0.500 |
Right epandrial lobe length | ρ = −0.29, P = 0.366 | ρ = −0.34, P = 0.276 | |
Sum of left and right lobe length | ρ = 0.28, P = 0.379 | ρ = 0.13, P > 0.5 | |
Ratio of left and right lobe lengths | ρ = 0.47, P = 0.128 | ρ = 0.34, P = 0.287 | |
Tibia length | ρ = 0.33, P = 0.297 | ρ = 0.39, P = 0.210 | |
Left lobe shaved (n = 14) | Left epandrial lobe length | ρ = −0.50, P = 0.069 | ρ = 0.19, P > 0.5 |
Right epandrial lobe length | ρ = −0.41, P = 0.146 | ρ = 0.26, P = 0.365 | |
Sum of left and right lobe lengths | ρ = −0.49, P = 0.081 | ρ = 0.31, P = 0.281 | |
Ratio of left and right lobe lengths | ρ = 0.18, P > 0.5 | ρ = −0.20, P = 0.482 | |
Tibia length | ρ = −0.08, P > 0.5 | ρ = 0.20, P > 0.5 |