Table 2 Results of Cox proportional hazard analysis for survivorship of the populations at the four experimental temperatures. A) females; B) males. Population is nested within location (fixed effect).
From: Thermal plasticity in Drosophila melanogaster: A comparison of geographic populations
A) Females | |||||||||
|---|---|---|---|---|---|---|---|---|---|
|  |  | 12°C |  | 18°C | 28°C | 31.2°C | |||
Source of variation | df | MS | F | MS | F | MS | F | MS | F |
Location | 1 | 22.8 | 1.79 | 38.3 | 0.52 | 60.1 | 0.61 | 50.4 | 0.77 |
Population within location | 3 | 12.7 | 1.23 | 73.9 | 7.4 *** | 98.2 | 10 *** | 65.2 | 6.5 *** |
Residuals | 479/491/491/489 | 10.3 | Â | 9.98 | Â | 9.8 | Â | 10 | Â |
B) Males | |||||||||
Source of variation | df | MS | F | MS | F | MS | F | MS | F |
Location | 1 | 0.4 | 0.01 | 24.8 | 0.34 | 71.1 | 0.59 | 56.3 | 0.66 |
Population within location | 3 | 39 | 3.8 * | 72.2 | 7.2 *** | 119.7 | 12.4 *** | 84.9 | 8.6 *** |
Residuals | 495/483/490/492 | 10.3 | Â | 10 | Â | 9.6 | Â | 9.88 | Â |