Stygobromus hayi

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Stygobromus hayi
Status TNC G1.svg
Critically Imperiled  (NatureServe) [2]
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Class: Malacostraca
Superorder: Peracarida
Order: Amphipoda
Family: Crangonyctidae
Genus: Stygobromus
Species:
S. hayi
Binomial name
Stygobromus hayi
(Hubricht & Mackin, 1940)

Stygobromus hayi is a rare species of crustacean known by the common name Hay's spring amphipod. It is endemic to the District of Columbia in the United States, where it occurs only in Rock Creek, a tributary of the Potomac River. [3] It is a federally listed endangered species, [4] is listed as Endangered on the IUCN Red List, [1] and as Critically Imperiled by NatureServe. [2]

One of three amphipods that are found only in the District of Columbia, this species has been called "Washington D.C.'s most famous endemic". [2] Hay's spring amphipod lives in five springs along Rock Creek, [5] occurrences which make up a single population. [2] All the sites are located in a three-mile stretch of the creek. [4] The amphipod lives in seeps formed when water rises through the substrate and is then trapped just under the ground surface by a clay layer. [3]

This amphipod measures 10 millimeters (0.39 in) in length. Because it lives underground, it is white in color and eyeless. [2]

This species is threatened by the degradation of its urban habitat. Heavy metals have been detected in the area. [3] Other forms of pollution could occur, such as oil spills, sewer leaks, and fertilizer runoff. [5] Flooding may destroy individuals and remove the microhabitat they inhabit. Construction nearby may damage the creek. Recreational activity next to the creek may increase the likelihood of pollution. [4]

Rock Creek Park protects the creeks and its springs. Different agencies monitor the creek and its sensitive species, including this amphipod and its relative, Stygobromus kenki . [5]

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<i>Stygobromus araeus</i> Species of crustacean

Stygobromus araeus, the Tidewater interstitial amphipod, is a phreatobite species of amphipod in family Crangonyctidae. It is native to Virginia and North Carolina in the United States.

<i>Stygobromus</i> Genus of crustaceans

Stygobromus is a genus of amphipod crustaceans that live in subterranean habitats. The majority of the listed species are endemic to North America, a smaller number of species are also known from Eurasia. Most of the North American species live in areas which were not covered by the Laurentide Ice Sheet, although a few species seem to have survived under the ice. A number of species are on the IUCN Red List as endangered species (EN) or vulnerable species (VU); one species, S. lucifugus, is extinct.

Stygobromus barri, commonly called Barr's cave amphipod, is a troglomorphic species of amphipod in family Crangonyctidae. It is endemic to Missouri in the United States.

<i>Stygobromus bifurcatus</i> Species of crustacean

Stygobromus bifurcatus, the bifurcated cave amphipod, is a troglomorphic species of amphipod in family Crangonyctidae. It is endemic to Texas in the United States.

Stygobromus bowmani, commonly called Bowman's cave amphipod, is a troglomorphic species of amphipod in family Crangonyctidae. It is endemic to Oklahoma in the United States.

Stygobromus conradi, commonly called Burnsville Cove cave amphipod, is a troglomorphic species of amphipod in family Crangonyctidae. It is endemic to Virginia in the United States.

Stygobromus elatus, commonly called elevated spring amphipod, is a phreatobite species of amphipod in family Crangonyctidae. It is endemic to Arkansas in the United States.

Stygobromus flagellatus, commonly called Ezell's Cave amphipod, is a troglomorphic species of amphipod in family Crangonyctidae. It is endemic to Texas in the United States.

Stygobromus hadenoecus, commonly called Devil's Sinkhole amphipod, is a troglomorphic species of amphipod in family Crangonyctidae. It is endemic to Texas in the United States.

Stygobromus harai, commonly called Hara's cave amphipod, is a troglomorphic species of amphipod in family Crangonyctidae. It is endemic to Tuolumne County, California in the United States.

<i>Stygobromus heteropodus</i> Species of crustacean

Stygobromus heteropodus, commonly called Pickle Springs amphipod, is a phreatobite species of amphipod in family Crangonyctidae. It is endemic to Ste. Genevieve County, Missouri in the United States.

Stygobromus lucifugus, the rubious cave amphipod is an extinct species of amphipod crustacean in the family Crangonyctidae. It was first described by Oliver Perry Hay who found it living in a well near Abingdon, Knox County, Illinois, United States, and it was endemic to that state.

<i>Stygobromus pecki</i> Species of crustacean

Stygobromus pecki, the Peck's cave amphipod, is a rare species of crustacean found in four cavern areas of southwestern Texas in the United States. It is a federally listed endangered species in the United States and is also listed as Endangered on the IUCN Red List. Because of the species' limited geographical distribution, not much information on S. pecki is known. As of April 2022, there is no available 5-year review, Species Status Assessment, or recovery plan for the species. However, the Edwards' Aquifer Habitat Conservation Program (EAHCP), with the support of the U.S. Fish and Wildlife Service (UFWS), has been attempting to further study and promote conservation of S. pecki.

Stygobromus putealis, commonly called the Wisconsin well amphipod, is a phreatobite species of amphipod in family Crangonyctidae. It is endemic to Wisconsin in the United States.

Stygobromus reddelli, commonly called Reddell's cave amphipod or Reddell's stygobromid, is a troglomorphic species of amphipod in family Crangonyctidae. It is endemic to Texas in the United States.

Stygobromus smithi, the Alabama well amphipod, is a phreatobite species of crustacean in family Crangonyctidae. It is endemic to Alabama in the United States.

Stygobromus stellmacki, commonly called Stellmack's cave amphipod is a troglomorphic species of amphipod in family Crangonyctidae. It is endemic to Pennsylvania in the United States.

Stygobromus wengerorum, commonly called Wenger's cave amphipod, is a troglomorphic species of amphipod in family Crangonyctidae. It is endemic to two caves in Mariposa County, California in the United States.

<i>Stygobromus kenki</i> Species of crustacean

Stygobromus kenki is a rare species of amphipod, a crustacean. Its common names include Kenk's amphipod, Rock Creek groundwater amphipod, and Rock Creek stygobromid.

References

  1. 1 2 Inland Water Crustacean Specialist Group (1996). "Stygobromus hayi". IUCN Red List of Threatened Species . 1996: e.T20990A9241906. doi: 10.2305/IUCN.UK.1996.RLTS.T20990A9241906.en . Retrieved 15 November 2021.
  2. 1 2 3 4 5 "Stygobromus hayi". NatureServe Explorer An online encyclopedia of life. 7.1. NatureServe. Retrieved 5 March 2023.
  3. 1 2 3 Diane Pavek. "Urban refuge for rare amphipods in the National Capital Region" (PDF). Natural Resource Year in Review 2001. National Park Service. Archived from the original on 19 June 2015.
  4. 1 2 3 USFWS. Stygobromus hayi Five-year Review. December 2007.
  5. 1 2 3 Diane Pavek (Jan–Feb 2002). "Endemic amphipods in our nation's capital". Endangered Species Bulletin. USFWS. Archived from the original on 23 November 2004.
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