- circadian
- seasonal
- developmental
- migratory
- reproductive
Operational definition
Regulatory strategy.
A physiological or behavioral change initiated before the predicted demand, opportunity, or stress has occurred.
It may be triggered by:
- circadian clocks;
- photoperiod;
- seasonal cues;
- developmental programs;
- tides;
- temperature trends;
- learned signals.
Its defining feature is preparation based on prediction rather than correction after disturbance.