Alabama cave shrimp

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Alabama cave shrimp
Conservation status
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Subphylum: Crustacea
Class: Malacostraca
Order: Decapoda
Infraorder: Caridea
Family: Atyidae
Genus: Palaemonias
Species: P. alabamae
Binomial name
Palaemonias alabamae
(Smalley, 1961)

The Alabama cave shrimp, Palaemonias alabamae, is a species of shrimp in the family Atyidae, found only in caves in the state of Alabama.

Conservation status[edit]

Palaemonias alabamae is listed as an endangered species both on the IUCN Red List,[1] and since September 7, 1988 under the U.S. Endangered Species Act.[2]

Distribution[edit]

The Alabama cave shrimp is only known from five caves, all in Madison County, Alabama.[3] Shelta Cave is the species' type locality, but viable populations have only been confirmed in Bobcat Cave and the complex comprising Hering Cave, Glover Cave and Brazelton Cave.

Ecology[edit]

P. alabamae occurs in cave pools with silty bottoms.[3] Predators of the Alabama cave shrimp include the southern cavefish Typhlichthys subterraneus, the Tennessee cave salamander Gyrinophilus palleucus, various crayfish species, bullfrogs and raccoons.[3]

Taxonomy[edit]

The closest relative of the Alabama cave shrimp is the Kentucky cave shrimp, Palaemonias ganteri, which lives in Mammoth Cave National Park, Kentucky.[3] The two species can be distinguished by size (P. alabamae being larger than P. ganteri), the longer rostrum in P. alabmae, and the greater number of spines on the rostrum of P. alabamae.[3]

References[edit]

  1. ^ a b De Grave, S. & Rogers, C. (2013). "Palaemonias alabamae". IUCN Red List of Threatened Species. Version 2013.2. International Union for Conservation of Nature. Retrieved 17 March 2014. 
  2. ^ "Alabama cave shrimp (Palaemonias alabamae) species profile". Environmental Conservation Online System. United States Fish and Wildlife Service. October 10, 2010. 
  3. ^ a b c d e Jeff Powell (August 29, 2006). "Alabama Cave Shrimp (Palaemonias alabamae). 5-Year Review: Summary and Evaluation" (PDF). United States Fish and Wildlife Service. Retrieved October 10, 2010.