Amphiuma tridactylum


Taxonomy [top]

Kingdom Phylum Class Order Family

Scientific Name: Amphiuma tridactylum
Species Authority: Cuvier, 1827
Common Name(s):
English Three-toed Amphiuma
Muraenopsis tridactyla (Cuvier, 1843)

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)
Listed as Least Concern in view of its wide distribution, tolerance of a degree of habitat modification, 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 in the eastern USA in western Alabama through eastern Texas, north through Mississippi, Arkansas and western Tennessee to southeastern Missouri and adjacent Kentucky (Conant and Collins 1991, Petranka 1998).
United States
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population: The number of occurrences is unknown but probably is at least a few hundred. Total adult population size is unknown but probably exceeds 100,000.
Population Trend: Stable

Habitat and Ecology [top]

Habitat and Ecology: Common habitats include wooded alluvial swamps, calcareous streams, marshes and lakes in flood lands, seepy pools and swampy banks of bayous and cypress sloughs. Extensive networks of crayfish burrows are a common feature of habitat. It usually lays eggs under logs in or near water; terrestrial development of larvae might be typical (Salthe 1973).
Systems: Terrestrial; Freshwater

Threats [top]

Major Threat(s): Loss of natural wetland habitat has been offset by the creation of canals and permanent ponds, which serve as suitable habitat because this amphiuma can coexist with fishes (Petranka 1998).

Conservation Actions [top]

Conservation Actions: No major threats currently exist, and no specific conservation measures are needed at this time.

Citation: Geoffrey Hammerson 2004. Amphiuma tridactylum. The IUCN Red List of Threatened Species. Version 2014.3. <>. Downloaded on 30 March 2015.
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