Abstract In 1976, Pittendrigh and Daan established a theoretical framework which has
coordinated research on circadian clock entrainment and photoperiodism until today. The …

Living organisms anticipate the seasons by tracking the proportion of light and darkness
hours within a day—photoperiod. The limits of photoperiod measurement can be …

Several wild rodents, such as the subterranean tuco-tucos (Ctenomys famosus), switch their
time of activity from diurnal to nocturnal when they are transferred from field to the laboratory …

Photoperiodism plays an important role in the synchronization of seasonal phenomena in
various organisms. In mammals, photoperiod encoding is mediated by differential …

Os padrões temporais de atividade no tuco-tuco de Anillaco (_Ctenomys_ aff. _knighti_), um
roedor subterrâneo, foram estudados extensivamente em laboratório e arenas semi …