Gecko Crestado

[Gracia Bradshaw]

Asalready mentioned in other posts, basically all the Crested Geckos found on the Isle of Pines where yellow and very little pattern. Only the juveniles or semi adult animals had stripes or a marbled pattern on the back and flanks. We noticed this in all populations on the island.

Male of the east coast

Detail of a male from the east coast

Female from the east coast

Female from the east coast

Semi adult from the west coast

Female from the west coast

Below some images of other gecko species we spotted. We will update the images with the correct determination when available.

Bavayia sp.

Bavayia sp.

Nactus sp.

Bavayia sp.

Bavayia sp.

Some skink images will follow soon...

The crested gecko was first described in 1866 as Correlophus ciliatus by the French, zoologist Alphone Guichenot in an article entitled "Notice sur un nouveau genre de sauriens de la famille des geckotiens du Musum de Paris " in the Mmoires de la Socit Scientifique Naturelle de Chrbourg.

In 1883 crested geckos was re-classified as Rhacodactylus ciliatus by Boulenger which was undone by Bauer et all in 2012. Very little was known about these geckos at the time and only a few specimen were collected. In 1993 Bauer and Sadlier listed Correlophus ciliatus as probably extinct. This gecko was only known from 16 specimens collected from a single locality on Grand Terre, it was presumed crested geckos were extinct as they had not been seen or collected for over a century (Bauer & Sadlier 1993).

Only in 1994 the gecko was rediscovered on the Isle of Pines by German herpetologists. From only a few specimen Correlopus cilliatus became very well established in captivity over the past few years, and is now one of the most kept gecko species in terrarium today!

One of the first Crested Geckos we found was this tailless female. So far we found about six animals which are all remarkably similar in coloration and pattern.

Although the animal appears brownish in the pictures - all animals found had a yellowish appearance.

The red spot on the flank is a characteristic of all animals found thus far.

All adult animals found so far were without a tail. It is known that crested geckos, unlike most geckos, do not regenerate their tails.

In the wild, crested geckos are found balancing on lianas or on top of leaves, at a height of about 2 - 3 meters. They seem to avoid larger trees.

The next gecko we found on of the more mature trees in the forest was a mossy gecko (Mniarogekko chahoua), a large female that unfortunately was missing her tail entirely. This however did not take away of the beauty of this animal.

A mossy gecko exiting its hide.

Even while this female gecko is missing its tale, it remains a stunning animal. The animal is extremely well camouflaged against the mossy bark.

To be continued...

After several nights searching the remaining primary rainforest of the Isle of Pines thoroughly, we finally found some remarkable geckos.

Remaining patch of primary rainforest in the background.

We scouted the rainforest by daytime and the habitat seemed to be perfect for the Crested Gecko (Correlophus ciliatus) because of the many lianas and lower bushes where these animals are reported to hunt at nighttime. But the many higher and mature trees of the forest made it the ideal habitat for two other members of New Caledonian diplodactylids.

Low rainforest on the western side of the isle of Pines with lower bushed and mature trees.

Mature tree in rainforest of the Isle of Pines, the habitat of the mossy geckos (Mniarogekko chahoua) and leachies (Rhacodactylus leachianus).

At night, on of the first geckos to be discovered was Rhacodactylus leachianus. The New Caledonian Giant Gecko or Leach's Giant Gecko, is the largest species of gecko on the Isle of Pines and used to be a subspecies (Rhacodactylus leachianus henkeli). It is often commonly referred to as a Leachie gecko (plural Leachies). It is the largest extant gecko in the world.

First Rhacodactylus leachianus spotted high in the trees is an adult female.

To be continued...

After two nights of extensive searching for the Crested Gecko we still were unable to find any. This is an indication how rare this gecko really is in its natural habitat!

So far we found several leachies (Rhacodactylus leachianus) and one female mossy giant geckos (Mniarogekko chahoua). These giant geckos live in the taller and more mature trees of the forest, whereas the Crested Gecko (Correlophus ciliatus) occupies the lower trees and bushes.

Habitat researched on the Isle of Pines where Crested Geckos (Correlophus ciliatus) are suspected.

Right now the Exo Terra team is preparing for the "Crested Gecko Expedition" to the Isle of Pines in New Caledonia. In only two days the team will leave from Brussels, Belgium to the other side of the globe in the South Pacific.

Once on the small island, south of the main island, the team will search for the illusive Crested Gecko. A common name in herpetoculture today, but note that the Crested Gecko was only rediscovered in 1995 after it was presumed extinct for nearly a century.

The Exo Terra team will film the Crested Gecko in the wild and report on its natural history. Stay tuned for daily updates!

The Forest meets the ocean near Baie d'Oro - Ilse of Pines

En enero de 2013, el equipo de la Expedicin Exo Terra se dirige a Nueva Caledonia, una nacin insular en el Ocano Pacfico, an gobernada por Francia. Es el hogar del famoso Gecko Crestado, una de las especies de geckos que hoy en da ms se cra en cautiverio.

Hasta hace muy poco el Gecko Crestado se presuma extinto hace ms de un siglo despus de haber sido descrito en 1866 como Correlophus ciliatus por un zologo francs. Fue redescubierto por el herpetlogo alemn Friedrich Wilhelm Henkel y su equipo en 1994.

El Sr. Henkel se unir al equipo de Exo Terra brevemente en la isla de le Des Pins, donde el gecko fue redescubierto. El nico objetivo de esta expedicin es la historia natural del Gecko Crestado y recopilar datos pertinentes para dar una mejor perspectiva sobre cmo mantener y criar con xito estos geckos nicos.

The crested gecko or eyelash gecko (Correlophus ciliatus) is a species of gecko native to southern New Caledonia (France). In 1866, the crested gecko was described by French zoologist Alphonse Guichenot.[1][2] This species was thought to be extinct until it was rediscovered in 1994 during an expedition led by Robert Seipp.[3][4] Along with several other New Caledonian gecko species, it is being considered for protected status by the Convention on the International Trade in Endangered Species of Wild Flora and Fauna.

The species was first described in 1866 as Correlophus ciliatus by the Alphone Guichenot in an article entitled "Notice sur un nouveau genre de sauriens de la famille des geckotiens du Musum de Paris" ("Notes on a new species of lizard in the gecko family") in the Mmoires de la Socit Scientifique Naturelle de Chrbourg.

It was later renamed Rhacodactylus ciliatus in 1883.[5] Recent phylogenetic analysis indicates that R. ciliatus and R. sarasinorum are not closely related to each other, so these 55 species have been reclassified from Rhacodactylus back to the genus Correlophus.[6]

The crested gecko is endemic to South Province, New Caledonia. There are three disjunct populations, one found on the Isle of Pines and surrounding islets, and there are two populations found on the main island of Grande Terre.[7] One population is around the Blue River, which is a protected provincial park, and the other is further north, just south of Mount Dzumac. They are seen around many tropical climates.

These geckos possess a semi-prehensile tail which they use to assist in climbing. The tail can be dropped (via caudal autotomy) to distract predators. Crested geckos do not regenerate their tails once lost; most adults in the wild lack tails.[4]

The toes and the tip of the semi-prehensile tail are covered in small hairs called setae. Each seta is divided into hundreds of smaller (approximately 200 nanometres in diameter) hairs called spatulae. It is believed these structures exploit the weak van der Waals force to help the gecko climb on most solid surfaces, most easily on flatter, smoother surfaces such as glass or wood. The toes have small claws which aid in climbing surfaces to which their toes cannot cling.

The crested gecko has many naturally occurring color groups, including grey, brown, red, orange, and yellow of various shades. They have three color morphs in the wild, which include pattern-less, white-fringed, and tiger.[9]

Crested geckos are a mostly arboreal species, preferring to inhabit the canopy of the New Caledonia rainforests. They are able to jump long distances between branches to move to new locations. Crested geckos are nocturnal, and will generally spend the daylight hours sleeping in secure spots in high branches.[1][10][11][12] Crested geckos are omnivores, and will opportunistically feed on fruit, nectar, pollen, and a variety of insects.[10]

Crested geckos were believed to be extinct prior to rediscovery in 1994.[4] The species is currently being assessed for CITES protection and vulnerable status.[13] The biggest single threat to the wild population appears to be the introduction of the little fire ant (Wassmania auropunctata) to New Caledonia.[10] The ants prey on the geckos, stinging and attacking in very large numbers, and they also compete with the geckos for food by preying on arthropods. Other threats to the wild population include habitat damage from wildfires, rodent predation, and habitat degradation from introduced deer and pigs.[14]

Crested geckos have two small sacs for calcium on the roof of their mouths. If an egg-laying female does not have enough calcium her sac will be depleted, and she can suffer from calcium deficiency. This can lead to a calcium crash, where the female appears shaky or wobbly, lethargic, has a lack of appetite, and can even result in death.[10]

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