Effects of constant temperatures on mean generation time, net reproductive rate and intrinsic rate of increase in D. melanogaster
| Temperature (°C) . | N . | Tg (days) . | R0 (female offspring) . | r . |
|---|---|---|---|---|
| 18 | 11 | 28.6±1.0a | 37.8±16.4a | 0.12±0.04a |
| 25 | 15 | 16.0±1.0b | 79.2±31.6b | 0.28±0.04b |
| 29 | 17 | 14.2±1.1c | 83.9±41.3b | 0.30±0.08b |
| F2,40 | 738.59 | 7.27 | 32.02 | |
| P | <0.001 | 0.002 | <0.001 | |
| r2 | 0.97 | 0.23 | 0.60 |
| Temperature (°C) . | N . | Tg (days) . | R0 (female offspring) . | r . |
|---|---|---|---|---|
| 18 | 11 | 28.6±1.0a | 37.8±16.4a | 0.12±0.04a |
| 25 | 15 | 16.0±1.0b | 79.2±31.6b | 0.28±0.04b |
| 29 | 17 | 14.2±1.1c | 83.9±41.3b | 0.30±0.08b |
| F2,40 | 738.59 | 7.27 | 32.02 | |
| P | <0.001 | 0.002 | <0.001 | |
| r2 | 0.97 | 0.23 | 0.60 |
Tg, mean generation time; R0, net reproductive rate; r, intrinsic rate of increase (calculated using an iterative technique, see Appendix)
Values are mean ± s.d. Results from three ANOVAs testing the effects of temperature treatment on fitness parameters are given below each parameter. Different letters indicate significant differences in response value among treatment groups based on Tukey–HSD post-hoc comparisons(P=0.05)