Hobbseus cristatus 

Scope: Global
Language: English

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Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Arthropoda Malacostraca Decapoda Cambaridae

Scientific Name: Hobbseus cristatus (Hobbs, 1955)
Common Name(s):
English Crested Riverlet Crayfish

Assessment Information [top]

Red List Category & Criteria: Data Deficient ver 3.1
Year Published: 2010
Date Assessed: 2010-06-01
Assessor(s): Adams, S.
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.
Hobbseus cristatus has been assessed as Data Deficient. Further research is needed to determine the abundance of this species, and whether it is impacted by any major threats, before a more accurate assessment of its conservation status can be made.
Previously published Red List assessments:

Geographic Range [top]

Range Description:This species is found in the Tombigbee and Pascagoula River basins in Kemper, Lauderdale, Lowndes, and Noxubee Counties, Mississippi, USA (Taylor et al. 2007). This species is currently known from fewer than 5 localities. Further information on this species and its distribution is expected from Bob Jones of Mississippi Fisheries, Wildlife and Parks.
The Extent of Occurrence (EOO) of this species has been estimated to exceed 6,900 km2.
Countries occurrence:
United States (Mississippi)
Additional data:
Range Map:Click here to open the map viewer and explore range.

Population [top]


There is insufficient population data available for this species.

Current Population Trend:Unknown
Additional data:
Population severely fragmented:Unknown

Habitat and Ecology [top]

Habitat and Ecology:This species is located in small streams and roadside ditches with turbid water. It is presumed to be a secondary burrower and burrows to depth of 0.3 - 0.5 m (Fetzner 2008).
Continuing decline in area, extent and/or quality of habitat:Unknown

Threats [top]

Major Threat(s): It is unknown wheather this species is being impacted by any major threats. However, it is likely to be undergoing localized declines in areas of urbanization, alteration to the hydrological regime and water pollution (R. Thoma, T. Jones, J. Cordeiro, pers. comm. 2009). In addition, paving of roadside ditches may reduce available habitat of this species.

Conservation Actions [top]

Conservation Actions: This species has been given a Global Heritage Status Rank of G3 by NatureServe (Taylor et al. 2007, NatureServe 2009) and Threatened by the American Fisheries Society (Taylor et al. 2007).
Further research on this species is required to determine its abundance, life histories and major threats.

Citation: Adams, S. 2010. Hobbseus cristatus. The IUCN Red List of Threatened Species 2010: e.T10206A3183194. . Downloaded on 21 June 2018.
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