Shovelnose salamander
Shovelnose salamander | |
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Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | Amphibia |
Order: | Urodela |
Family: | Plethodontidae |
Subfamily: | Plethodontinae
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Genus: | Desmognathus |
Species: | D. marmoratus
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Binomial name | |
Desmognathus marmoratus (Moore, 1899)
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Synonyms | |
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The shovelnose salamander (Desmognathus marmoratus) is a species of
Taxonomy
The golden shovel-nosed salamander (D. aureatus) and black shovel-nosed salamander (D. melanius) were both described in 1956, then synonymized with D. marmoratus, but later revived as distinct species in 2009. However, their distinctiveness was quantified using mtDNA. Due to heavy mtDNA introgression between Desmognathus species being a major problem with delineating their taxonomy, both species are not recognized by other taxonomic authorities. However, they are provisionally recognized by Darrel Frost, unless proper counter-evidence is released.[4]
Description
The shovelnose salamander is a robust species, broad with a relatively short tail. It receives its name from the shape of its snout which is more square ended than is seen in other salamanders in its genus. The colour is a dusky brown, grey, or black with two longitudinal rows of paler small patches and many smaller pale speckles. The underside is usually grey.[5]
Distribution and habitat
The shovelnose salamander is found in the Appalachian Mountains in the southeastern United States at 300 to 1,680 metres (980 to 5,510 ft) above sea level. It is (provisionally) thought to range from Virginia south through North Carolina to South Carolina. Populations in Tennessee and Georgia are thought to belong to D. aureatus and D. melanius, although this is still debated.[6] It is found in shallow, flowing water, rapids and riffles on gravel and rocky substrates, but is not found in silted streams.[2][7]
Behaviour
The shovelnose salamander is an aquatic species, living and feeding in moderately fast-flowing streams. Although it shares its range with the
Breeding takes place in late spring and early summer. The female attaches eggs singly or in small clumps to the underside of a rock in moving water. The eggs hatch after about eleven weeks and the larvae hide among the gravel particles and feed on aquatic invertebrates. They undergo metamorphosis into adults at two to three years of age and mature at about five.[7]
Status
The shovelnose salamander is listed as being of "
References
- ^ . Retrieved 16 November 2021.
- ^ a b Moore, J. Percy (1899). "Leurognathus marmorata, a new genus and species of the family Desmognathidae". Proc. Acad. Nat. Sci. Phila. 51: 316–323.
- ^ Frost, Darrel R. (2014). "Desmognathus marmoratus (Moore, 1899)". Amphibian Species of the World: an Online Reference. Version 6.0. American Museum of Natural History. Retrieved 1 March 2015.
- ^ "Desmognathus marmoratus (Moore, 1899) | Amphibian Species of the World". amphibiansoftheworld.amnh.org. Retrieved 2021-12-23.
- ^ Bloom, Brittany. "Shovelnose Salamander (Desmognathus marmoratus)". Savannah River Ecology Laboratory. Retrieved 2012-09-25.
- ^ "Desmognathus marmoratus (Moore, 1899) | Amphibian Species of the World". amphibiansoftheworld.amnh.org. Retrieved 2021-12-23.
- ^ a b c Camp, Carlos D.; Tilley, Stephen G. "Desmognathus marmoratus". AmphibiaWeb. Retrieved 2012-09-25.