Mictocaris

Mictocaris halope
Mictocaris halope
Scientific classification
Kingdom:
Animalia
Phylum:
Arthropoda
Subphylum:
Crustacea
Class:
Malacostraca
Order:
Mictacea
Family:
Mictocarididae

Bowman & Iliffe, 1985
Genus:
Mictocaris

Bowman & Iliffe, 1985
Species:
M. halope
Binomial name
Mictocaris halope
Bowman & Iliffe, 1985

Mictocaris halope is the only species of cave crustacean in the monotypic genus Mictocaris. It is placed in its own family, Mictocarididae, and is sometimes considered the only member of the order Mictacea. Mictocaris is endemic to anchialine caves in Bermuda, and grows up to 3.5 mm (0.14 in) long. Its biology is poorly known.

Taxonomy

Mictocaris halope is the only species in the genus Mictocaris,[2] and in the family Mictocarididae.[3] When the family Hirsutiidae is treated as the separate order Bochusacea, Mictocaris halope is the only species that remains in the order Mictacea.[4]

Description

Mictocaris is 3.0–3.5 millimetres (0.12–0.14 in) long and is reflective. It is native to four anchialine limestone caves in Bermuda: it was first discovered by divers in Crystal Cave, and then further populations were found in Green Bay Cave (South Harrington Sound Passage and North Shore Passage), Roadside Cave and Tucker's Town Cave.[5]

Ecology

Mictocaris is rarely encountered because it lives only in deep waters in the interior sections of the caves. It avoids sunlight and remains in isolated parts of the cave.[6] It is usually seen swimming, but on rare occasions can be found resting or walking on a rock. When relocated into an aquarium, they prefer the walls and surfaces of the glass.[6] It is unknown what Mictocaris eats, but it has developed powerful molar and mandible muscles which allows them to chew productively.[6] When originally found, the divers collected 56 specimens of Mictocaris, which can now be found in the National Museum of Natural History.[6]

Conservation

Mictocaris is critically endangered due to population fragmentation, a decline in subpopulations, and only inhabiting a single location. The population is only extant in five locations, some of which are likely experiencing habitat destruction.[1]

References

  1. ^ a b Iliffe, T.M. (2014). "Mictocaris halope". IUCN Red List of Threatened Species. 2014: e.T13520A514996. doi:10.2305/IUCN.UK.2014-1.RLTS.T13520A514996.en. Retrieved 16 November 2021.
  2. ^ Damià Jaume; Joan E Cartes & Geoffrey A. Boxshal (2000). "Shallow-water and not deep-sea as most plausible origin for cave-dwelling Paramisophria species (Copepoda: Calanoida: Arietellidae), with description of three new species from Mediterranean bathyal hyperbenthos and littoral caves". Contributions to Zoology. 68 (4): 205–244.
  3. ^ J. K. Lowry & M. Yerman. "Mictacea: Species". crustacea.net. Australian Museum. Archived from the original on 8 February 2012. Retrieved 3 September 2007.
  4. ^ Shane T. Ahyong; James K. Lowry; Miguel Alonso; Roger N. Bamber; Geoffrey A. Boxshall; Peter Castro; Sarah Gerken; Gordan S. Karaman; Joseph W. Goy; Diana S. Jones; Kenneth Meland; D. Christopher Rogers & Jörundur Svavarsson (2011). "Subphylum Crustacea Brünnich, 1772" (PDF). In Z.-Q. Zhang (ed.). Animal biodiversity: an outline of higher-level classification and survey of taxonomic richness. Vol. 3148. pp. 165–191. {{cite book}}: |journal= ignored (help)
  5. ^ Thomas E. Bowman & Thomas M. Iliffe (1985). "Mictocaris halope, a new unusual percaridan crustacean from marine caves on Bermuda". Journal of Crustacean Biology. 5 (1): 58–73. doi:10.2307/1548220. JSTOR 1548220.
  6. ^ a b c d Thomas M. Iliffe (25 October 2010). "Mictocaris halope Bowman & Iliffe, 1985". Anchialine Caves and Cave Fauna of the World. Texas A&M University at Galveston. Retrieved 15 November 2010.

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