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Calotriton

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Kingdom  Animalia
Family  Salamandridae
Scientific name  Calotriton
Rank  Genus
Class  Amphibia
Subfamily  Pleurodelinae
Phylum  Chordata
Order  Salamander
Calotriton httpsinpnmnhnfrphotosuploadswebtofsinpna
Similar  Pyrenean brook salamander, Euproctus, Montseny brook newt, Salamander, Lissotriton

Trit n pirenaico calotriton asper pyrenean brook newt pyrenean brook salamander


Calotriton, or the European brook newts, is a genus of newts native to the Pyrenees and central Catalonia (Catalan Pre-coastal Range). These amphibians were formerly placed within genus Euproctus, but the genus was resurrected in 2005. Instead of Euproctus, they seem more closely related to Triturus, their sister taxon.

Contents

Looking for pyrenean brook newt calotriton asper


Evolution

Calotriton and Triturus are estimated to have split approximately 8 Mya ago. This may have been associated with adaptation to fast-running, well-oxygenated mountain streams (instead of ponds in Triturus), leading to some superficial similarity with Euproctus in convergent evolution: strongly depressed head and body, and reduction or even absence of lungs.

Description

Calotriton are small- to medium-sized newts, 70–167 mm (2.8–6.6 in) in total length. Skin is covered with tubercles bearing horny tips, more so above than beneath, which can be completely smooth. Limbs are moderate, with four fingers and five toes. Body is rounded or slightly depressed. There is no cutaneous dorsal and caudal crest, not even during the breeding season. Tail is about as long as head and body and compressed from side; longer in females and deeper in males. Lungs are absent or very reduced.

Species

There are two species:

  • Calotriton arnoldi Carranza & Amat, 2005 – Montseny brook newt
  • Calotriton asper (Dugès, 1852) – Pyrenean brook newt (formerly Euproctus asper)
  • References

    Calotriton Wikipedia


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