Cambarus veteranus 

Scope: Global
Language: English

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Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Arthropoda Malacostraca Decapoda Cambaridae

Scientific Name: Cambarus veteranus Faxon, 1914
Common Name(s):
English Big Sandy Crayfish

Assessment Information [top]

Red List Category & Criteria: Data Deficient ver 3.1
Year Published: 2010
Date Assessed: 2010-06-01
Assessor(s): Cordeiro, J. & Thoma, R.F.
Reviewer(s): Collen, B. & Richman, N.
Contributor(s): Livingston, F., Livingston, F., Soulsby, A.-M., Batchelor, A., Dyer, E., Whitton, F., Milligan, H.T., Smith, J., Lutz, M.L., De Silva, R., McGuinness, S., Kasthala, G., Jopling, B., Sullivan, K. & Cryer, G.

Cambarus veteranus has been assessed as Data Deficient This species has a restricted range (extent of occurrence is 3,300 km2) and is thought to be threatened in a significant part of its range as a result of logging and road construction, and organic pollution. This species does not quite meet the criteria for Endangered as number of locations is greater than 10 and the range cannot be said to be severely fragmented. Further research is urgently needed on the vicinity of known localities as a number of known localities may qualify as a single location, and sites are still disappearing.

Previously published Red List assessments:

Geographic Range [top]

Range Description:This species is known from the upper Guyandotte River and Bluestone River drainages of West Virginia; the upper Big Sandy drainage in Buchanan and Dickerson counties, Virginia; in Floyd and Pike counties, Kentucky, USA. Occurrences in Levisa Fork and Knox Creek on the Tug Fork River are disjunct from the remaining populations (T. Jones and R. Thoma pers. comm. 2009). Special efforts have been made to collect this species from adjacent streams in neighbouring counties but to no avail (Jezerinac et al. 1995). The species has lost half of its distribution in Virginia, is near extirpation in West Virginia, and occupies a small portion of the Russell Fork mainstem in Kentucky (R. Thoma pers. comm. 2009). The extent of occurrence (EOO) of this species is approximately 3,300 km2.
This species has been searched for every year since 2000 in West Virginia without success, including intensive survey effort based on habitat suitability modeling (Channell 2004). In Kentucky, it is known only from the upper portions of the Big Sandy River drainage in Floyd and Pike counties and a single collection from the Red River in Estill County (Kentucky River drainage) exists in the EKU Crayfish Collection, although subsequent surveys have not found the species here (Taylor and Schuster, 2004). Recent field work in Kentucky found the species to occur in both Tug Fork (Pike County) and Levisa Fork (Floyd County) of the Big Sandy drainage; this now makes only seven confirmed sites in Kentucky, however, more field work may find more (J. Cordeiro pers. comm. 2010). This species has lost half of its distribution in Virginia, is near extirpation in West Virginia, and still occupies a small portion of the Russell Fork mainstem in Kentucky (R. Thoma, pers. comm., 2009).
Countries occurrence:
United States (Kentucky, Virginia, West Virginia)
Additional data:
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population: This species is found in low numbers at each of the sites at which it is found (Channell 2004). Recent field work in Kentucky found the species to be sporadic in distribution and uncommon at sites (R. Thoma, T. Jones and J. Cordeiro pers. comm. 2009). In West Virginia this species has been found at three locations, one in the Guyandotte River basin and two in the Tug Fork basin, though historically 13 locations were reported for this species in West Virginia. In Kentucky it has been documented from 11 locations, and in Virginia from 17. The largest subpopulation is found in Russel Fork and associated Levisa Fork, though this species remains in only one stream of the Levisa Fork basin. All of the Tug Fork subpopulations are isolated as the mainstream Tug Fork is severely polluted and devoid of the species, resulting in disjunct subpopulations at the mouths of tributaries large enough to support the species. At present the Guyandotte River and Tug Fork populations are likely to become extirpated. In these two basins this species occurs in very low numbers and observed individuals appear stressed and unhealthy (R. Thoma pers. comm. 2010).
Current Population Trend:Unknown
Additional data:
Population severely fragmented:No

Habitat and Ecology [top]

Habitat and Ecology:This species inhabits permanent, fast-flowing streams with a width of 10 - 20 m and a substrate composed of bedrock, cobble, boulder and sand (Jezerinac et al. 1995).

Threats [top]

Major Threat(s): The Upper Guyandotte is severely affected by the extractive industry, logging and road construction. This has caused fragmentation and degradation of habitat that has historically been used by this species. Attempts to locate this species in other areas with suitable habitat have been unsuccessful (Channell 2004). Continued coal mining, road construction and logging all occur extensively in the range of this species. Jezerinac et al. (1995) report that the species is absent from streams polluted with organic material from septic tanks and coal dust. There are major mining threats in the area, in addition to plans for large road construction. (Channell, 2004, J. Wykle, WV DNR pers. comm. 2005 cited in NatureServe 2009).

Conservation Actions [top]

Conservation Actions: This species has been given a Global Heritage Status Rank of G2 by NatureServe (Taylor et al. 2007, NatureServe 2009); the American Fisheries Society assessed it as 'threatened' (Taylor et al. 2007).

Citation: Cordeiro, J. & Thoma, R.F. 2010. Cambarus veteranus. The IUCN Red List of Threatened Species 2010: e.T3687A10022078. . Downloaded on 21 September 2018.
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