Gecko egg incubation: TSD temperature ranges, humidity control, incubation media, candling techniques, and hatchling first care.
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Gecko egg incubation: TSD temperature ranges, humidity control, incubation media, candling techniques, and hatchling first care.
Many gecko species exhibit Temperature-Dependent Sex Determination (TSD), where incubation temperature determines offspring sex. Understanding this mechanism enables planned breeding.
26-27C: Mostly female. 29-30C: Mixed sexes. 31-33C: Mostly male (high-temperature females also occur).
Crested geckos do NOT have TSD (genetic sex determination). Incubate at 22-26C.
Vermiculite: Most common. Mix 1:1 by weight with water. Perlite: Better aeration than vermiculite. HatchRite: Commercial medium with easy moisture management.
Never flip eggs (mark orientation with candling marks). Check moisture every 2-3 days. Never spray water directly on eggs. Remove moldy eggs but note that shell-only mold sometimes still hatches.
Use an LED pen light against the egg to check development. Visible blood vessels indicate a fertile egg.
Bri-Choku breeders offer incubation advice and breeding pairs with proven genetics.
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