... Urocitellus parryii Zeitgeber The Earth's rotation about its axis drives a 24 h rhythm in the environment that influences almost every biome on the planet. Circadian clocks, endogenous molecular feedback loops with a period close to 24 h, allow organisms to adjust their physiology and behavior...

... the influence of cyclic pressure and ‘remember’ the tidal cycle from the field for 1.5 days. STST North Sea Zeitgeber Tidal trigger Migration and distribution patterns of marine organisms are often closely connected to oceanic and tidal currents. In addition to long-distance migrations...

... subsequently recovered, whereas plasma 3,5,3′-triiodo-L-thyronine (T 3) levels were not substantially affected by either photoperiod or temperature. There was no consistent pattern of change in plasma cortisol levels. The results do not provide support for the role of temperature as a zeitgeber, but do...

... salmon parr subsampled from a common stock. The significance of this is discussed. The data suggest that the lunar cycle acts as a Zeitgeber for synchronization of the growth rate rhythms. 06 01 1987 © 1987 by Company of Biologists 1987 teleost fish Zeitgeber growth lunar cycles...