Ok, the following at least applies for G. flavigularis.

In this case, breeding is rather easy. All you need ias very well fed animals and a moist corner in the tank.

Very important to my experience is a good light source. Under fluorescent or normal incandescent bulbs I did not have any success.

Only when using two 150 W metal halides (4800K) at low distance (1ft) I had success.

Mine only bred once a year. In December, the male started chasing the female and frequent matings could be observed. Normally end of january the female was ready to lay. To this end she used the moist corner of the cage. The eggx were buried deeply (5-8"within the substrate(sand/potting soil 4/1) and the female guarded the egg laying place for several weeks. Eggs are relatively big and clutches range from 3-6 eggs.

In an incubator at 30°C daytime and 24°C at night, babies hatched after 120-160 days. For the first weeks the eggs need almost 100% relative humidity, later the substrate (I used vermiculite) has to dry out almost completely. If too moist, embryos or hatchlings die.

Hatchlings are big (5" and more) and robust. They are easy to raise.

Hatching rates drop significantly if the mother was short in calcium and vitamine supplements during gravidity.



Hope that helps.

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