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Taricha granulosa

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Taxonomy [top]

Kingdom Phylum Class Order Family
ANIMALIA CHORDATA AMPHIBIA CAUDATA SALAMANDRIDAE

Scientific Name: Taricha granulosa
Species Authority: (Skilton, 1849)
Common Name/s:
English Roughskin Newt

Assessment Information [top]

Red List Category & Criteria: Least Concern ver 3.1
Year Published: 2004
Date Assessed: 2004-04-30
Assessor/s: Geoffrey Hammerson
Reviewer/s: Global Amphibian Assessment Coordinating Team (Simon Stuart, Janice Chanson, Neil Cox and Bruce Young)
Justification:
Listed as Least Concern in view of its wide distribution, tolerance of a broad range of habitats, presumed large population, and because it is unlikely to be declining fast enough to qualify for listing in a more threatened category.

Geographic Range [top]

Range Description: This species occurs from the Pacific coast of North America from southeastern Alaska to Santa Cruz County, California (Stebbins 1985, Petranka 1998). Records from the Rocky Mountains, including populations in Latah County, Idaho, could represent introductions, though Monello and Wright (1997) recorded three small populations in Latah County in 1997. It can be found at sea level to about 2,800m asl (Stebbins 1985).
Countries:
Native:
Canada; United States
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population: It is widespread and common. Total adult population size is unknown but surely exceeds 10,000.
Population Trend: Stable

Habitat and Ecology [top]

Habitat and Ecology: It can be found in forests, woodlands, grasslands, open valleys, and ranch land. Found on land (in open or under rocks, logs, etc.) or in ponds, lakes, reservoirs, and slow-moving streams. It is the most aquatic western newt. It breeds in ponds, lakes, reservoirs and slow-moving streams. Lays eggs singly on aquatic plants or submerged twigs (Behler and King 1979).
Systems: Terrestrial; Freshwater

Threats [top]

Major Threat(s): None known.

Conservation Actions [top]

Conservation Actions: Undeveloped buffers should be maintained around breeding sites. It occurs in many protected areas.

Bibliography [top]

Behler, J.L. and King, F.W. 1979. The Audubon Society Field Guide to North American Reptiles and Amphibians. New York.

Blackburn, L., Nanjappa, P. and Lannoo, M.J. 2001. An Atlas of the Distribution of U.S. Amphibians. Ball State University, Muncie, IN, USA.

Frost, D.R. 1985. Amphibian Species of the World: A Taxonomic and Geographic Reference. Allen Press and the Association of Systematic Collections, Lawrence, Kansas.

IUCN. 2004. 2004 IUCN Red List of Threatened Species. www.iucnredlist.org. Downloaded on 23 November 2004.

Monello, R.J. and Wright, R.G. 1997. Geographic distribution: Taricha granulosa. Herpetological Review: 155.

Nussbaum, R.A. and Brodie, E.D. Jr. 1981. Taricha granulosa. Catalogue of American Amphibians and Reptiles: 1-4.

Nussbaum, R.A., Brodie, Jr., E.D. and Storm, R.M. 1983. Amphibians and Reptiles of the Pacific Northwest. University Press of Idaho, Moscow, ID, USA.

Stebbins, R.C. 1954. Amphibians and Reptiles of Western North America. McGraw-Hill Book Company, New York.

Stebbins, R.C. 1985. A Field Guide to Western Reptiles and Amphibians. Second Edition. Houghton Mifflin Company, Boston, Massachusetts.

Welsh, H.H., Jr., Hodgson, G.R. and Lind, A.J. 2005. Ecogeography of the herpetofauna of a northern Californian watershed: linking species patterns to landscape processes. Ecography: 521-536.

Citation: Geoffrey Hammerson 2004. Taricha granulosa. In: IUCN 2013. IUCN Red List of Threatened Species. Version 2013.2. <www.iucnredlist.org>. Downloaded on 19 April 2014.
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