Table 4. Analysis of the influence of age at first reproduction, litter size (LS) and proportion of multiple paternities (MP) on female median lifespan and aging rate.
Median lifespan | Aging rate | ||||||||||||
Independant variables | k | λ | R2 | Deviance | AICc | ΔAICc | wi | λ | R2 | Deviance | AICc | ΔAICc | wi |
Constant | 3 | <0.001 | 0.00 | 24.82 | 27.15 | 0.00 | 0.51* | 0.78 | 0.00 | 46.56 | 48.88 | 0.00 | 0.42 |
Age at first reproduction | 4 | <0.001 | 0.00 | 23.82 | 29.89 | 2.74 | 0.13 | 0.73 | 0.00 | 46.56 | 52.61 | 3.73 | 0.07 |
MP | 4 | <0.001 | 0.00 | 24.38 | 30.44 | 3.29 | 0.10 | 0.81 | 0.00 | 45.92 | 51.96 | 3.08 | 0.09 |
LS | 4 | <0.001 | 0.05 | 22.86 | 28.91 | 1.76 | 0.21 | <0.001 | 0.22 | 43.34 | 49.39 | 0.51 | 0.33* |
MP+LS | 5 | <0.001 | 0.00 | 22.84 | 33.17 | 6.02 | 0.02 | <0.001 | 0.16 | 43.32 | 53.63 | 4.75 | 0.04 |
MP*LS | 5 | <0.001 | 0.00 | 22.52 | 37.75 | 10.60 | 0.00 | <0.001 | 0.10 | 43.16 | 58.40 | 9.52 | 0.00 |
Age at first reproduction+MP | 5 | <0.001 | 0.00 | 22.88 | 33.21 | 6.06 | 0.02 | <0.001 | 0.14 | 43.68 | 54.00 | 5.12 | 0.03 |
Age at first reproduction+MP+LS | 6 | <0.001 | 0.00 | 21.78 | 37.02 | 9.87 | 0.00 | <0.001 | 0.24 | 40.34 | 55.58 | 6.70 | 0.01 |
Age at first reproduction+MP×LS | 7 | <0.001 | 0.00 | 21.20 | 42.19 | 15.04 | 0.00 | <0.001 | 0.18 | 40.32 | 61.31 | 12.43 | 0.00 |
We compared models based on AICc and wi (see Material and methods section). K represents the number of parameters in the model, R2 corresponds to the adjusted R2 and Δ AICc represents the difference of corrected Akaike’s with that of the best models (*).