Seasonal breeding is a masterpiece of evolutionary engineering. It connects the microscopic dance of hormones within an animal to the celestial movements of the earth around the sun. By respecting these natural cycles, species ensure that the next generation has the best possible start in a competitive world.
While the benefits are clear—offspring survival—the costs are immense. Seasonal breeding requires intense physiological preparation. seasonal breeders
When it’s dark, the pineal gland produces melatonin. When it’s light, it stops. A long-day breeder’s brain sees a short melatonin signal (because nights are short) and says, "Go time." A short-day breeder’s brain sees a long melatonin signal and says, "Go time." seasonal breeders