Table 2.
Entrainment and free-running parameters of D. helvetica strains in the laboratory
| Strain | Ψo | Ψe | α/ρ in LD 12:12 | TAPC in LD 12:12 | α/ρ in DD | τ (h) | TAPC in DD |
| haH | 4.5 (0.4) | - 1.1 (0.3) | 0.7 (0.3) | 596 (32) | 0.4 (0.2) | 26.1 (0.6) | 592 (59) |
| laH | -1.3 (0.4) | 0.4 (0.2) | 1.7 (0.4) | 782 (61) | 0.4 (0.1) | 21.7 (0.4) | 377 (32) |
Mean values (± SD, N = 21) for the phase of activity onset (Ψo), phase of activity end (Ψe), the ratio of activity phase to rest phase (α/ρ) and the total activity per cycle (TAPC) for males of the haH strain and the laH strain of D. helvetica entrained by LD 12:12 cycles at constant temperature of 20 ± 0.5°C in the laboratory.