Anaxyrus woodhousii

Taxonomy

Assessment Information

Geographic Range

Population

Habitat and Ecology

Threats

Conservation Actions

Taxonomy [top]

Kingdom	Phylum	Class	Order	Family
ANIMALIA	CHORDATA	AMPHIBIA	ANURA	BUFONIDAE

Scientific Name:

Anaxyrus woodhousii

Species Authority:

(Girard, 1854)

Common Name/s:

English

–

Woodhouse's Toad

Synonym/s:

Bufo woodhousii

Assessment Information [top]

Red List Category & Criteria:	Least Concern ver 3.1
Year Assessed:	2004
Assessor/s	Geoffrey Hammerson, Georgina Santos-Barrera
Evaluator/s:	Stuart, S.N., Chanson, J.S., Cox, N.A. & Young, B.E. (Global Amphibian Assessment Coordinating Team)
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 is found throughout most of central and southwestern USA and portions of adjacent northern Mexico. It is absent from high mountains and the West Coast.
Countries:	Native: Mexico; United States
Range Map:	(click map to view full version)

Population [top]

Population:	Abundant and widespread. The population trend varies with location but is probably stable in most areas. See Sullivan and Lamb (1988) for evidence that B. woodhousii is displacing B. microscaphus in central Arizona.
Population Trend:	Stable

Habitat and Ecology [top]

Habitat and Ecology:	This species inhabits grasslands, deserts and semi-desert shrublands, river valleys and floodplains, agricultural areas, usually in areas with deep friable soils. It burrows underground or hides under rocks, plants, or other cover when inactive. Eggs and larvae develop in the shallow water of marshes, rain pools, ponds, lakes, reservoirs, flooded areas, and other bodies of water lacking a strong current.
Systems:	Terrestrial; Freshwater

Habitat and Ecology:

This species inhabits grasslands, deserts and semi-desert shrublands, river valleys and floodplains, agricultural areas, usually in areas with deep friable soils. It burrows underground or hides under rocks, plants, or other cover when inactive. Eggs and larvae develop in the shallow water of marshes, rain pools, ponds, lakes, reservoirs, flooded areas, and other bodies of water lacking a strong current.

Systems:

Terrestrial; Freshwater

Threats [top]

Major Threat(s):	There are no major threats to this species.

Major Threat(s):

There are no major threats to this species.

Conservation Actions [top]

Conservation Actions:	This species is not found within any protected areas in Mexico but occurs in several in the USA.

Conservation Actions:

This species is not found within any protected areas in Mexico but occurs in several in the USA.

Citation:	Geoffrey Hammerson, Georgina Santos-Barrera 2004. Anaxyrus woodhousii. In: IUCN 2008. 2008 IUCN Red List of Threatened Species. <www.iucnredlist.org>. Downloaded on 04 December 2008.
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