part_of regulation of biological process adult circadian rhythm regulation of circadian rhythmicity IDOMAL:0002438 IDOMAL:0002438 The rhythms are generally entrained by photoperiod and temperature and appear to be governed by multiple endogenous circadian pacemakers. Females that have mated often show an altered periodicity that eliminates the acitivity peak normally associated with the time of day that mating occurs. idomal_namespace