Chahoua Gecko Breeding

Chahoua gecko breeding centers on a paired clutch of two eggs. Zoo and university records put a healthy female at a new clutch roughly every five to eight weeks, for three to five clutches a season. The chahoua gecko does not breed on a fixed calendar the way many temperate reptiles do.

Keepers who run a seasonal cycle, with a cooling rest and a careful pairing, see far more consistent results than those who leave animals together year round. This guide covers sexing, the breeding season, egg laying, incubation and hatchling care. It also flags where a 2012 taxonomic split changes how older sources should be read.

Sexing and Sexual Maturity

Adult male chahoua geckos carry a visible hemipenal bulge at the base of the tail. They also show a row of preanal pores just above the vent and enlarged cloacal spurs. A university herpetarium care sheet notes the pores become visible at about 3 inches snout to vent, well before full adult size of about 5.7 inches snout to vent and 10 inches overall.

Females lack the bulge, and their pores are faint or absent. Sexing chahoua geckos before they near full size is difficult. The same care sheet puts maturity at 14 to 18 months, so most keepers wait until an animal is at least a year old before trying.

Breeding condition depends more on size and weight than on age alone. A female should reach full adult weight before she is paired. Egg production draws heavily on her calcium and body reserves.

Pairing an underweight or still growing female is a common cause of stuck eggs. It can also leave her in poor body condition afterward. Weighing animals before and through the season is standard practice for this reason.

Chahoua Gecko Breeding Season and Cooling

New Caledonia’s natural seasons run opposite to the Northern Hemisphere. Chahoua geckos kept indoors on artificial cycles typically follow a rest and pair cycle instead. That cycle is usually timed to the keeper’s own winter and spring, roughly October through March.

A brief winter cooling period is widely reported by breeders as a trigger for stronger clutches. It often runs several weeks, with nighttime lows a few degrees below normal. This practice is a keeper standard, not a figure from a published study on this species.

Feeding is reduced during cooling, but not stopped. Chahoua geckos do not brumate the way some temperate lizards do. Temperature and light return to normal over one to two weeks once the rest period ends, and pairs go in once both animals are feeding well again.

Pairing and Courtship

Chahoua geckos are typically housed alone outside of breeding. Two adults, especially two females or two males, can fight and cause serious injury together. Breeding introductions put one proven male with one female at a time, watched closely for the first hours.

Vocalizing, tail waving and short chases are normal early interactions. Sustained biting is not, and neither is one animal refusing to move away. Either sign means the pair should be separated right away.

Once a pair tolerates each other, many keepers leave them together for one to several weeks. They then separate the pair and reintroduce them periodically through the season. Females of many gecko species can store sperm and lay fertile eggs for months after one successful pairing, a trait commonly reported for chahoua geckos as well.

Chahoua Gecko Eggs and Egg Laying

A gravid female develops two visible egg masses low in the body. They appear as pale swellings through the skin, usually two to three weeks before laying. She searches for a laying site in the days beforehand.

Most captive setups provide a moist substrate box for this. It sits in a dark corner, filled several inches deep with damp coconut fiber or sphagnum moss. Without a clear site, females often lay in a water dish or loose substrate instead.

Clutch size is consistently two eggs, laid together. The shells are thick, rigid and well calcified, and a zoo fact sheet notes the two eggs stick to each other shortly after laying. The female does not bury them, and zoo keepers have seen females guard the clutch.

Brandywine Zoo records about four to five clutches a season, one every five weeks. Bowling Green State University’s herpetarium gives three clutches a year at roughly 60 day intervals, and notes that only a third to a half of eggs hatch. Expect six to ten eggs a season and fewer hatchlings.

Continuous egg laying places heavy calcium demand on the female. General reptile husbandry guidance points to low calcium relative to output as a leading cause of egg binding and skeletal weakening in laying reptiles. This is why breeders raise calcium and vitamin D3 supplementation through the laying season.

Egg binding is slow to show in reptiles. The Merck Veterinary Manual notes that dystocia is generally not an acute presentation and that some reptiles retain eggs for weeks or even months, so a female that has gone well past her expected laying date needs a veterinary exam, not more waiting.

Chahoua Gecko Incubation Temperature and Time

Collected eggs go into an incubation container on a slightly moist substrate. Vermiculite or perlite mixed with water by weight works well for this. The container stays stable and ventilated, apart from the parent enclosure.

Chahoua gecko eggs are commonly incubated at room temperature in many home collections, without a dedicated incubator. A Brandywine Zoo fact sheet gives 90 to 120 days from laying to hatching. Incubation time reported by keepers scales strongly with temperature, and the temperature bands below come from breeding records rather than a published study, so treat them as a keeper standard.

Sources differ on whether incubation temperature shifts hatchling sex ratio, as it does in some other reptiles. Temperature dependent sex determination has not been confirmed for this species in a published study. A keeper should not pick a temperature just to try to favor one sex.

Chahoua Gecko Baby Care After Hatching

Hatchlings pip and emerge fully formed and independent. The eggs do not need to be moved once pipping starts. A newly hatched chahoua gecko baby typically weighs a few grams.

Hatchling length runs roughly 3 to 4 inches including the tail. This figure comes from breeder records, since exact hatchling size has not been confirmed against a published measurement. Treat it as a general range rather than a fixed number.

Hatchlings are usually housed alone or in very small, same size groups. Each one needs a small enclosure with adult level humidity and temperature, misted daily. The university care sheet gives 70 to 85 F as the tolerated range and 72 to 78 F as the preferred one, never above 85 F.

Offer water and a calcium dusted diet within the first day or two. The care sheet lists a commercial fruit based gecko diet as the preferred staple, with crickets, mealworms and flies as extras and calcium with D3 added.

Most hatchlings take their first meal within a few days. A slow feeding response alone is not unusual in the first week. A baby that refuses food past a week, or looks dehydrated with sunken eyes and loose skin, needs a reptile veterinarian familiar with geckos.

Steady growth, regular shedding and normal nighttime activity are the best signs of a healthy hatchling. Full enclosure, temperature and humidity details that apply to hatchlings and adults alike are on the chahoua gecko care guide.

The enclosure page covers setup and feeding schedules in more depth.

The 2012 Species Split: Chahoua and Jalu Geckos

A 2012 taxonomic revision of New Caledonia’s giant geckos split off part of what was once called Rhacodactylus chahoua. The northwestern Grande Terre and Belep Islands populations became a new species, Mniarogekko jalu. The chahoua gecko, Mniarogekko chahoua, now refers only to the central Grande Terre population.

This matters for breeding because older books and forum posts sometimes describe traits that actually belong to the jalu gecko. A pre 2012 account of a northern or Belep Island animal is describing a different species today. Cross checking the source’s date and population before trusting a breeding claim is worth the extra step.

How to Breed Chahoua Geckos: A Season by Season Summary

• Confirm sex and adult weight in both animals before pairing; do not breed an underweight female.
• Run a short winter cooling period with slightly lower nighttime temperatures and lighter feeding, then warm the pair back up over one to two weeks.
• Introduce one male and one female under supervision, watching for aggression rather than assuming compatibility.
• Provide a moist laying box well before eggs are expected, and check it often once the female shows swelling.
• Move each clutch to its own ventilated incubation container without rotating the eggs, at a stable temperature in the 72 to 80 F range.
• Set up a small rearing enclosure before eggs are due, since babies need housing the moment they emerge.

First time breeders can find more general steps in the gecko breeding guide. Clutch handling and incubation basics carry across most gecko species even where the exact numbers differ.

Chahoua Breeding Compared With Related Geckos

Chahoua gecko breeding follows a broadly similar pattern to the larger leachianus gecko. Both lay paired clutches of two eggs repeatedly through a season, rather than one large clutch.

The pattern also holds for the more commonly bred crested gecko and gargoyle gecko, two species with dedicated care pages on this site.

Exact incubation times and clutch frequency still vary by species. Do not apply a crested gecko schedule directly to chahoua gecko eggs. Readers weighing several species can compare wider options at types of lizards.

The full care picture is on the main chahoua gecko page.

Lifespan and long term commitment, covered separately on the lizard lifespan page, are worth reading before deciding to breed at all.

Frequently Asked Questions

How many eggs does a chahoua gecko lay at once?

A female lays a clutch of two thick shelled eggs at a time, which is standard for the genus. Zoo and university records put her at three to five clutches a season, roughly one every five to eight weeks, rather than one large batch.

What temperature should chahoua gecko eggs be incubated at?

Keepers commonly incubate eggs somewhere between about 68 and 80 F. Cooler temperatures produce a longer incubation and warmer temperatures a shorter one. Many home breeders succeed at stable room temperature without a dedicated incubator.

How long does it take chahoua gecko eggs to hatch?

A Brandywine Zoo fact sheet gives 90 to 120 days. Keepers report a wider spread, from roughly 60 days at the warm end to over 150 days at cool room temperature. Those outer figures come from breeder records rather than a published study.

At what age do chahoua geckos start breeding?

A university herpetarium care sheet puts maturity at 14 to 18 months. Breeding condition still depends on size and weight more than the calendar. Keepers wait until a gecko reaches full adult size before pairing it.

Do chahoua geckos care for their babies after hatching?

Zoo keepers have seen females guard their eggs, but there is no care after hatching. Hatchlings emerge fully independent, feeding and moving on their own. They should go into a separate rearing enclosure as soon as they are found.

Why does the 2012 species split matter for breeding chahoua geckos?

Before 2012, the northwestern Grande Terre and Belep Islands populations were classified with the rest of the species. A taxonomic revision split them off as a new species, Mniarogekko jalu, so older breeding accounts of those populations may not describe today’s chahoua gecko.