作者: MARÍA SERÓN-FERRÉ , CHARLES A. DUCSAY , GUILLERMO J. VALENZUELA
关键词: photoperiodism 、 Environmental change 、 Period (gene) 、 Zoology 、 Endocrinology 、 Adaptation 、 Biology 、 Pregnancy 、 Circadian rhythm 、 Bacterial circadian rhythms 、 Rhythm 、 Internal medicine
摘要: 1. Introduction ADAPTATIONS to our environment are of two types: reactive, in which the adaptation follows an environmental change, and predictive, organism anticipates change before it takes place. We live organized day night, seasons, tides alternate. These events repeat themselves with a given frequency, organisms living on earth successfully adapt them predictive fashion. The overt expression these adaptations cyclic changes physiological processes known as circadian, tidal, seasonal rhythms. Circadian rhythms daily periods light dark (day night) induced by rotation around its axis (1). They loosely defined function period approximately 24 h. Their presence is established obtaining frequent measurements variable over or 48 h; data then analyzed standard statistical methods such...