Table 2.
Means (±SEM) of estimates for diurnal rhythms
| Response | Treatment | First measurement | Second measurement | Third measurement | Fourth measurement |
|---|---|---|---|---|---|
| Survival | L | 25.79 (±1.45) | 21.57 (±1.56) | 12.93 (±0.90) | 12.64 (±0.95) |
| D | 26.85 (±1.51) | 19.86 (±1.06) | 18.07 (±1.26) | 10.14 (±0.93) | |
| Moulting | L | 11.93 (±1.08) | 6.57 (±0.79) | 6.00 (±0.59) | 5.79 (±0.68) |
| D | 10.31 (±1.21) | 5.79 (±0.52) | 6.57 (±0.64) | 3.64 (±0.37) | |
| Honeydew | L | 28.46 (±3.91) | 37.86 (±2.95) | 16.07 (±2.95) | 12.00 (±1.57) |
| D | 24.46 (±3.02) | 23.09 (±1.73) | 14.46 (±1.51) | 8.00 (±1.23) | |
| Activity | L | 2.44 (±0.50) | 2.69 (±0.17) | 2.77 (±0.52) | 1.68 (±0.20) |
| D | 1.50 (±0.14) | 1.84 (±0.15) | 1.39 (±0.15) | 1.39 (±0.22) |
Activity is the combined estimate of honeydew excretion per nonmoulting survivor. The four measurements were taken after 1.5, 3, 4.5, and 6 d, and correspond to the dashed lines in Fig. 1. Treatment L corresponds to 28 h light and 8 h darkness, Treatment D corresponds to 20 h light and 16 h darkness as described in Fig. 1 and in the main text.