Coastal Giant Salamander (Dicamptodon tenebrosus)
Description: The coastal giant salamander can reach up to 13 inches in total length, making it the largest terrestrial salamander in North America. The coastal giant salamander has stout limbs with four toes on the front feet and five toes on the back feet. The species tail is around 40 percent of the total length of the salamander and is laterally compressed. The head, back, and sides have a marbled or reticulate pattern of dark blotches on a light brown or brassy-colored background. The head is broad with a shovel-like snout and a fold of skin across the throat called the gular fold. The eyes are medium in size and have a brass-flecked iris and a large black pupil. This species is one of the few salamanders capable of vocalizing.
Habitat: Larvae and paedomorphic adults usually inhabit clear, cool or cold, well-oxygenated streams and often take cover under stones; aquatic stages also occur in some mountain lakes and ponds. Metamorphosed adults are found in humid forests under rocks and logs, near mountain streams or rocky shores of mountain lakes. Eggs are attached to logs or rocks in creeks. It is unclear as to whether or not it is tolerant of habitat disturbance.
Range: This species occurs in western North America from southern British Columbia (Chilliwack River drainage) in Canada, south through western Washington and western Oregon to northwestern California in the United States of America.
Found in these States:
CA |
OR |
WA
Diet: Adult coastal giant salamanders, like most of the genus Dicamptodon, are opportunistic feeders feeding on anything they can fit in their mouth. This may include, but is not limited to; slugs, insects, worms and other invertebrates as well as small vertebrates such as small rodents, snakes, and other giant salamanders. In the larval stage, coastal giant salamanders will feed on small macroinvertebrates such as insect larvae as well as small fish and mollusks. Both adult and larval coastal salamanders have been recorded consuming other individuals of the same species.
Reproduction: A female coastal giant salamander will lay her eggs in moderate to slow flowing mountain streams under rocks and crevasses, hatching in early to mid spring. The coastal giant salamander, being a member of the genus Dicamptodon, exhibits two distinctive phases within its life; an aquatic larval stage with filamentous gills and an elongated tail with a caudal fin (similar to that of a tadpole), and a terrestrial adult form losing their caudal fin and filamentous gills, and instead developing robust legs and a pair of internal lungs.
Status: Listed as Least Concern in view of the large extent of occurrence, large number of subpopulations and localities, and large population size.
»» Kingdom: Animalia - Animals
»» Phylum: Chordata - Chordates
»» Subphylum: Vertebrata - Vertebrates
»» Class: Amphibia - (Amphibians)
»» Order: Caudata - Salamanders
»» Family: Salamandridae - Newts
»» Subfamily: Pleurodelinae - Pleurodeline Newts
»» Genus: Dicamptodon
»» Species: Dicamptodon tenebrosus - Coastal Giant Salamander
This article uses material from the Wikipedia article "Coastal Giant Salamander", which is released under the Creative Commons Attribution-Share-Alike License 3.0. Content may have been omitted from the original, but no content has been changed or extended.
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