Erpeton tentaculatum

[paul371 0]

Salut je recherche des infos sur se serpent aquatique :
Il vit en aquarium il est Opistoglyphe mesure vers les 90 cm aprés je seche...

[Rafilayardi11 0]

Tape Erpeton tentaculatum dans google tu auras déjà pas mal d'informations, je viens de le faire

Maintenant faut voir aussi si des gens qui maintiennent cet animal sont présents sur le forum R - V

[askook 0]

Voici un article paru dans la revue Aquarama N°152 de Novembre 1996

[Rudy04 0]

Dommage qu'il soit venimeux....

[askook 0]

Kvt34 a écrit:

Dommage qu'il soit venimeux....

Erpeton tentaculatum est peu toxique et n'est pas connu comme espèce ayant causé des envenimations.
Cette espèce n'est pas soumise au CDC...

[paul371 0]

Chance va me donner ses Guppys
Pour le net a par des trucs en anglais je trouve rien...
Merci pour ton article askook

[Rafilayardi11 0]

bah justement, en anglais et avec un traducteur il y a moyen de s'y retrouver un peu si on ne connait pas l'anglais

ça fait un complément d'information en plus et j'ai vu que certains en parlaient également sr des forums francophones ...

[La flêche 0]

Merci grand chef pour ces infos !

[manice11 0]

En fait ses tenteacules servent à "casser" la silhouette du serpent ce qui permet de mieux passer inaperçu.

[askook 0]

manice a écrit:

En fait ses tenteacules servent à "casser" la silhouette du serpent ce qui permet de mieux passer inaperçu.

Il a été aussi évoqué que les deux appendices
- pouvaient servir d'appâts (cette thèse est obsolète).
- étaient des organes sensoriels.

[askook 0]

Vidéo montrant la position caractéristique en forme de "J" retourné d'un Erpeton tentaculatum en chasse. La queue est accrochée soit à une racine, à une plante ou à tout autre point d'ancrage.

http://vids.myspace.com/index.cfm?fuseaction=vids.individual&VideoID=42238353

[paul371 0]

Sympas tout sa

[crowley 0]

il y a deux ans j'ai cru comprendre que probablement 100% des specimens étaient WC, et que la plupart des éleveurs les faisaient claquer avant 6 mois. Ca a peut etre évolué depuis?

[paul371 0]

A se qu'il parait une annimalerie ont eu du NC ( les parents WC on pondus a leur arrivés )
Mais bon a mon avis fortement rare en NC...

[manice11 0]

askook a écrit:

manice a écrit:

En fait ses tenteacules servent à "casser" la silhouette du serpent ce qui permet de mieux passer inaperçu.

Il a été aussi évoqué que les deux appendices
- pouvaient servir d'appâts (cette thèse est obsolète).
- étaient des organes sensoriels.

Il me semble que d'aprèss une publication que j'avais lue, il avait été montré que les appendices de contenait pas de cellules sensorielles, et qu'il ne s'agissait en tout cas pas, comme tu le pécisse, d'un quelconque leurre.

Je ne me rappelle plus du nom de la publication mais elle est trouvable sur internet il me semble.

[askook 0]

J'ai trouvé ceci:

The utterly outrageous tentacled snake

Few snakes can claim to be as weird as the tentacled or fishing snake Erpeton tentaculatum. Not that many people have heard of it, it doesn't have a Wikipedia page, and, frankly, try mentioning its name for a few odd looks from your listeners. This Cthulhu-snake is, in fact, as strange as its name suggests.

Take a good look at this pair. A cursory glance is enough to establish their weirdness. The tentacles - unique in the snake world - are Erpeton's distinguishing feature. Other than that, also note its long, flattened head, large mouth, and high, dorsally-oriented eyes.

Tentacled snakes belong to the Homalopsinae, or mud snakes. This is a "colubrid"* subfamily comprising opisthoglyphous (hind-fanged) water snakes with dorsally-oriented eyes and valvular nostrils; all of these are adaptations for their aquatic lifestyle. As such, tentacled snakes are reasonably typical for their group. The group includes marine, mangrove, and freshwater species, and most are fish and amphibian predators (the crab-eating snake Fordonia leucobalia, an exception, daintily shreds crabs).

*"Colubridae" is a wastebasket polyphyletic group, which is being sorted out as I speak. I use the term here for convenience.

Thus, like the rest of its subfamily, the tentacled snake is a highly aquatic animal. It rarely (if ever) leaves the water, and when it does, it is clumsy on land. It is found in sluggish freshwater throughout Indochina, preys almost entirely on fish, and is ovoviviparous, giving birth to around 7 to 13 young.

As mentioned, the tentacled snake's most outstanding characteristic is the pair of fleshy tentacles on its snout. Tentacled snakes are the only reptiles with pronounced and moveable tentacles (Fox, 1999). The tentacles are erectile, derived from the cavernous tissue in the noses of most reptiles (Winokur, 1977). They usually lie limp but are erected if the snake is disturbed (Fox, 1999). The obvious question, of course, is why the hell are they there? Obviously, tentacled snakes are doing something with their tentacles. Hahn (1973) listed several hypotheses concerning their function, including sense organs, fish lures, sexual display, and disruptive camouflage. Captive snakes have never been observed using the tentacles to attract fish, and it remains to be conclusively proven that they serve as camouflage.

However, the hypothesis that they are sensory organs has gained support. Winokur's study of the structure of the tentacles showed that they were highly innervated and muscular, and as such were ideally suited for mechanoreception in water (Winokur, 1977). Fox (1999), in his grand review of non-mammalian vertebrate barbels, agrees with Winokur on that point, and while a lot remains to be answered, the "sensory barbels" hypothesis is the best-supported to date.

Another point of interest is the strike. As a fully aquatic snake, the tentacled snake has adapted its strike for maximum power and efficiency underwater. In a 2002 study, tentacled snakes were shown to wait for prey in a rigid J-shape, with tentacles erect. Once a fish came near, the tentacled snake would suddenly turn its head to the fish, opening its mouth and sucking in water with the fish, and swallowing it. Much of the tentacled snake's morphology is geared towards this superfast subaqueous strike (Smith et al., 2002).

It is easy to imagine the likes of the tentacled snake growing large in some snake-favoring future, evolving into catfish-snakes with long, sensitive barbels and paddle-tails. In fact, that was my thinking behind the kioh-lung or qiulong, a Spec madtsoiid (hmmm, madtsoiids... now there's an interesting topic). However, it seems that the tentacled snake is just a bizarre side-branch on the glorious tree of ophidian evolution, and, to our knowledge, no other snake is similar.
Source: http://eobasileus.blogspot.com/2008/02/utterly-outrageous-tentacled-snake.html

et quelques références bibliographiques:


Cornelissen, T. (1970) - Erpeton tentaculatum; a fishing snake. Bull. Chi. Herp. Soc. 24 (2) : 26 - 29.

Fox, H. (1999) - Barbels and barbel-like tentacular structures in sub-mammalian vertebrates: a review. Hydrobiologia 403: 153-193.

Hahn, D. E. (1973) - Comments on Tentacle Structure and Function in Erpeton tentaculatum (Serpentes: Colubridae). Journal of Herpetology, Vol. 7, No. 3, pp. 304-306.

Morice, A. (1970) - On the habits of a remarkable snake of Indochina: Herpeton tentaculatum. Bull. Chi. Herp. Soc. 24 (2) : 21.

Morice, A. (1970) - A note on Herpeton tentaculatum. Bull. Chi. Herp. Soc. 24 (2) : 22 - 25.

Smith, T. L; Povel, G.D.E and Kardong, K. V. (2002) - Predatory strike of the tentacled snake (Erpeton tentaculatum). Journal of Zoology 256: 233-242 Cambridge University Press

Winokur, R.M. (1977) - The integumentary tentacles of the snake Erpeton tentaculatum: structure, function, evolution. Herpetologica 33: 247 - 253

[askook 0]

Voici un super blog concernant cette espèce

http://erpeton.over-blog.com/