Wednesday, 23 January 2013

The yellow crested geckos of the Isle of Pines...

As already 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

Tuesday, 22 January 2013

Some other species we spotted...

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...

Crested Geckos, a little history...

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 Muséum de Paris " in the Mémoires de la Société Scientifique Naturelle de Chérbourg.

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!

Sunday, 20 January 2013

Crested Geckos at last!

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.

Friday, 18 January 2013

Amazing geckos!

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...

The island reveals its treasures

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...

Wednesday, 16 January 2013

Still no sign of Crested Geckos

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.