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Villosa trabalis 

Scope:Global
Status_ne_offStatus_dd_offStatus_lc_offStatus_nt_offStatus_vu_offStatus_en_offStatus_cr_onStatus_ew_offStatus_ex_off

Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Mollusca Bivalvia Unionoida Unionidae

Scientific Name: Villosa trabalis
Species Authority: (Conrad, 1834)
Common Name(s):
English Cumberland Bean, Cumberland Bean Pearly Mussel, Purple Bean

Assessment Information [top]

Red List Category & Criteria: Critically Endangered B1+2c ver 2.3
Year Published: 2000
Date Assessed: 2000-06-30
Annotations:
Needs updating
Assessor(s): Bogan, A.E. & Seddon, M.B. (Mollusc Specialist Group)
Reviewer(s): Seddon, M.B. (Mollusc Red List Authority)
Justification:
There are a few records of isolated populations of very low numbers for this species. A viable population is still present in Hiwawa County and it is viewed as single locality with less than 100 km² of river habitat that is in decline.
Previously published Red List assessments:
  • 1996 – Not Evaluated (NE)
  • 1994 – Endangered (E)
  • 1990 – Endangered (E)
  • 1988 – Endangered (E)
  • 1986 – Endangered (E)

Geographic Range [top]

Countries occurrence:
Native:
United States (Alabama, Kentucky, Tennessee)
Additional data:
Range Map:Click here to open the map viewer and explore range.

Population [top]

Current Population Trend:Decreasing
Additional data:

Habitat and Ecology [top]

Habitat and Ecology:This species occupies fast flowing, small streams and rivers with a gravel substrate with some sand on riffle areas.
Systems:Freshwater

Threats [top]

Major Threat(s): It is threatened by habitat loss due to acid mine drainage and dams.

Citation: Bogan, A.E. & Seddon, M.B. (Mollusc Specialist Group). 2000. Villosa trabalis. The IUCN Red List of Threatened Species 2000: e.T22976A9404092. . Downloaded on 29 July 2016.
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