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Table 2 Entrainment and free-running parameters of D. helvetica strains in the laboratory

From: Effects of altitude on circadian rhythm of adult locomotor activity in Himalayan strains of Drosophila helvetica

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)

  1. 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.