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"Pet Bearded Dragon Care & Information (Pogona vitticeps)"

Bearded Dragon Photoperiod

Bearded Dragon Photoperiod

The photoperiod is the time a Bearded dragon is exposed to light over a period of 24 hours. The Bearded dragon photoperiod has an effect on growth, but more importantly, the day night rhythm of these animals.

Bearded Dragon Photoperiod Sensor

Bearded dragons have a so-called pineal gland in the top of their head. It is also called a "third eye" which is sensitive to visible light exposure. During the day, when visible light is at its most, hormones are secreted by this gland. When this hormone is low (i.e. when the day length is relative short, and the evenings are relative long) the  lizard's brain picks up that its winder. When there is a sudden change in concentration from low to high (i.e. during spring) the these hormones stimulate sex glands to secrete sex hormones.

Bearded Dragon Photoperiod In Captivity

To create a "natural" photoperiod in captivity, all lights (including heat lights) should be on for about 14 hours per day during the summer period. During winter this time can be reduced to twelve hours per day. Commercially available Bearded dragon electric timers can be used to automate the light cycle.

The Advanced Bearded Dragon Manual
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