Pyrenean brook salamander in On the Pyrenean newt, Molge aspera, Duges by Jacques von Bedriaga (1895)
The Pyrenean brook salamander grows to about 16 cm (6.3 in) in length, half of which is the laterally flattened tail. The females are usually larger than the males. The body is sturdy with a flattened head and small eyes, and the limbs are short. There are no parotoid glands and the skin is covered with small, rough tubercles. The colour is very variable, the upper side usually being some shade of olive, grey, charcoal, or muddy brown, sometimes mottled with ochre, with an intermittent yellowish stripe down the spine. The underside has a row of dark splotches at either side and the centre is red, orange, or yellow. The male has a rounded cloacal swelling while the female has a conical one.[3]
The Pyrenean brook salamander is endemic to the Pyrenees and surrounding mountains and is found at altitudes ranging from 700 to 2,500 metres (2,300 to 8,200 ft). It is a mostly aquatic species usually frequenting slow-moving streams and shallow mountain lakes. It favours water below 15 °C (59 °F) with scarce vegetation on rocky or pebbly bottoms.[3] Some Pyrenean brook salamanders live entirely inside caves where they breed over a long period of the year due to lack of day length stimulus.[4]
Biologyedit
The Pyrenean brook salamander is infrequently seen, though it is active by day, as well as by night. It is mostly aquatic in summer. It feeds on insects and other slow-moving invertebrateprey, and is itself eaten by trout, so it is often scarce in locations in which they are abundant.[3] It is sensitive to pesticides in the water which are absorbed through the skin and accumulate in the tissues.[4]
The Pyrenean brook salamander sometimes aestivates in hot weather in the lower parts of its range. It hibernates in winter on land at higher altitudes, emerging in the spring. During courtship, the male displays his brightly coloured underparts before grasping the female around the loins with his tail and transferring one to four spermatophores directly into her cloaca in a process that lasts several hours. The female lays 20 to 40 eggs over the course of a few weeks, sticking them to rocks or inside crevices with her extensible cloaca. The eggs hatch after about six weeks; the larvae have external gills and are entirely carnivorous. They may overwinter one or more times before metamorphosis and become mature in two or more years, depending on altitude, with the females taking longer.[3] The juvenile newts are a dark colour with a thin, yellow line along the spine.[4]
Referencesedit
^ abcIUCN SSC Amphibian Specialist Group. (2022). "Calotriton asper". IUCN Red List of Threatened Species. 2022: e.T59448A89707795. doi:10.2305/IUCN.UK.2022-1.RLTS.T59448A89707795.en. Retrieved 31 July 2022.
^Frost, Darrel R. (2014). "Calotriton asper (Dugès, 1852)". Amphibian Species of the World: an Online Reference. Version 6.0. American Museum of Natural History. Retrieved 9 March 2015.
^ abcdArnold, Nicholas; Ovenden, Denys (2002). Reptiles and Amphibians of Britain and Europe. London: Harper Collins Publishers Ltd. pp. 37–38.
^ abc"Calotriton asper". AmphibiaWeb. Retrieved March 18, 2012.
External linksedit
Media related to Calotriton asper at Wikimedia Commons
Further readingedit
Carranza, S. & Amat, F. (2005). "Taxonomy, biogeography and evolution of Euproctus (Amphibia: Salamandridae), with the resurrection of the genus Calotriton and the description of a new endemic species from the Iberian Peninsula" (PDF). Zoological Journal of the Linnean Society. 145 (4): 555–582. doi:10.1111/j.1096-3642.2005.00197.x.
January 01, 1970
pyrenean, brook, salamander, pyrenean, newt, calotriton, asper, aragonese, guardafuents, pirenenco, catalan, tritó, pirinenc, basque, uhandre, piriniarra, spanish, tritón, pirenaico, largely, aquatic, species, salamander, family, salamandridae, found, pyrenees. The Pyrenean brook salamander or Pyrenean newt Calotriton asper Aragonese guardafuents pirenenco Catalan trito pirinenc Basque uhandre piriniarra Spanish triton pirenaico is a largely aquatic species of salamander in the family Salamandridae 1 2 It is found in the Pyrenees of Andorra France and Spain The IUCN lists it as least concern 1 Pyrenean brook salamander Conservation status Least Concern IUCN 3 1 1 Scientific classification Domain Eukaryota Kingdom Animalia Phylum Chordata Class Amphibia Order Urodela Family Salamandridae Genus Calotriton Species C asper Binomial name Calotriton asper Duges 1852 Synonyms Triton glacialis Philippe 1847 nomen nudum Hemitriton asper Duges 1852 Hemitriton punctulatus Duges 1852 Molge apsera Duges 1852 Euproctus asper Duges 1852 Contents 1 Description 2 Distribution and habitat 3 Biology 4 References 5 External links 6 Further readingDescription edit nbsp Pyrenean brook salamander in On the Pyrenean newt Molge aspera Duges by Jacques von Bedriaga 1895 The Pyrenean brook salamander grows to about 16 cm 6 3 in in length half of which is the laterally flattened tail The females are usually larger than the males The body is sturdy with a flattened head and small eyes and the limbs are short There are no parotoid glands and the skin is covered with small rough tubercles The colour is very variable the upper side usually being some shade of olive grey charcoal or muddy brown sometimes mottled with ochre with an intermittent yellowish stripe down the spine The underside has a row of dark splotches at either side and the centre is red orange or yellow The male has a rounded cloacal swelling while the female has a conical one 3 nbsp Calotriton asper MHNTDistribution and habitat editThe Pyrenean brook salamander is endemic to the Pyrenees and surrounding mountains and is found at altitudes ranging from 700 to 2 500 metres 2 300 to 8 200 ft It is a mostly aquatic species usually frequenting slow moving streams and shallow mountain lakes It favours water below 15 C 59 F with scarce vegetation on rocky or pebbly bottoms 3 Some Pyrenean brook salamanders live entirely inside caves where they breed over a long period of the year due to lack of day length stimulus 4 Biology editThe Pyrenean brook salamander is infrequently seen though it is active by day as well as by night It is mostly aquatic in summer It feeds on insects and other slow moving invertebrate prey and is itself eaten by trout so it is often scarce in locations in which they are abundant 3 It is sensitive to pesticides in the water which are absorbed through the skin and accumulate in the tissues 4 The Pyrenean brook salamander sometimes aestivates in hot weather in the lower parts of its range It hibernates in winter on land at higher altitudes emerging in the spring During courtship the male displays his brightly coloured underparts before grasping the female around the loins with his tail and transferring one to four spermatophores directly into her cloaca in a process that lasts several hours The female lays 20 to 40 eggs over the course of a few weeks sticking them to rocks or inside crevices with her extensible cloaca The eggs hatch after about six weeks the larvae have external gills and are entirely carnivorous They may overwinter one or more times before metamorphosis and become mature in two or more years depending on altitude with the females taking longer 3 The juvenile newts are a dark colour with a thin yellow line along the spine 4 References edit a b c IUCN SSC Amphibian Specialist Group 2022 Calotriton asper IUCN Red List of Threatened Species 2022 e T59448A89707795 doi 10 2305 IUCN UK 2022 1 RLTS T59448A89707795 en Retrieved 31 July 2022 Frost Darrel R 2014 Calotriton asper Duges 1852 Amphibian Species of the World an Online Reference Version 6 0 American Museum of Natural History Retrieved 9 March 2015 a b c d Arnold Nicholas Ovenden Denys 2002 Reptiles and Amphibians of Britain and Europe London Harper Collins Publishers Ltd pp 37 38 a b c Calotriton asper AmphibiaWeb Retrieved March 18 2012 External links edit nbsp Media related to Calotriton asper at Wikimedia CommonsFurther reading editCarranza S amp Amat F 2005 Taxonomy biogeography and evolution of Euproctus Amphibia Salamandridae with the resurrection of the genus Calotriton and the description of a new endemic species from the Iberian Peninsula PDF Zoological Journal of the Linnean Society 145 4 555 582 doi 10 1111 j 1096 3642 2005 00197 x Retrieved from https en wikipedia org w index php title Pyrenean brook salamander amp oldid 1135342618, wikipedia, wiki, book, books, library,
