Amphiuridae

From Wikipedia, the free encyclopedia

Amphiuridae
Fossil range: Jurassic - present [1]
Scientific classification
Kingdom: Animalia
Phylum: Echinodermata
Subphylum: Eleutherozoa
Class: Ophiuroidea
Order: Ophiurida
Suborder: Gnathophiurina
Family: Amphiuridae
Ljungman, 1867
Genera

See text.

Amphiuridae (commonly called long-armed burrowing brittle stars[2] or burrowing brittle stars) are a large family of brittle stars of the suborder Gnathophiurina. Some species are used to study echinoderm development (e.g. Amphipholis kochii[3] and Amphioplus abditus[4]) and bioluminescence (the dwarf brittle star, Amphipholis squamata[5][6]).

Contents

[edit] Characteristics

Amphiuridae are generally small brittlestars. Their jaws are always with two apical papillae at the tip, and one or more papillae on each side[7].

[edit] Systematics and phylogeny

Amphiuridae are the most diverse family of Ophiurida with over 200 species. It contains the following genera:[8][9]

  • Acrocnida Gislén, 1926
  • Ailsaria Fell, 1962
  • Amphiacantha Matsumoto, 1917
  • Amphichilus Matsumoto, 1917
  • Amphichondrius Nielsen, 1932
  • Amphicontus Hill, 1940
  • Amphigyptis Nielsen, 1932
  • Amphilimna Verrill, 1899
  • Amphilycus Mortensen, 1933
  • Amphinephthys Fell,1962
  • Amphiocnida
  • Amphiodia Verrill, 1899
  • Amphiomya H.L. Clark, 1939
  • Amphioncus Clark, 1939
  • Amphioplus Verrill, 1899
  • Amphipholis Ljungman, 1966
  • Amphistigma H.L. Clark, 1938
  • Amphiura Forbes, 1842
  • Ctenamphiura Verrill, 1899
  • Diamphiodia Fell, 1962
  • Dougalopus A. M. Clark, 1970
  • Gymnodia Fell, 1962
  • Icalia Fell, 1962
  • Micropholis Thomas, 1966
  • Monamphiura Fell 1962
  • Monopholis Fell, 1962
  • Nannophiura Mortensen, 1933
  • Nudamphiura Tommasi, 1965
  • Nullamphiura Fell, 1962
  • Nullopholis Fell, 1962
  • Ophiocnida Lyman, 1865
  • Ophiomonas Djakonov, 1952
  • Ophionema Lütken, 1869
  • Ophionephthys Lütken, 1869
  • Ophiophragmus Lyman, 1865
  • Ophiostigma Lütken, 1856
  • Pandellia Fell, 1962
  • Paracrocnida Mortensen, 1940
  • Paramphichondrius Guille & Wolff, 1984
  • Paramphiura Koehler, 1895
  • Silax Fell, 1962
  • Triodia A.M. Clark, 1970
  • Unioplus Fell, 1962

In addition, two extinct genera are known[10]:

  • Deckersamphiura Jagt, 2000
  • Xanthamphiura Hess 1970

[edit] Ecology

Amphiuridae are found in oceans worldwide from tropics to arctic and antarctic regions, with some species living in brackish water[11]. They live mostly by burrowing in the seafloor or hiding under rocks. Most of them are herbivores or detritus feeders.

[edit] References

  1. ^ J. Roman, G. Breton, and C. Vadon. 1993. Ophiurides et Astéride (Echinodermata) du Tithonien de Canjuers (Var, France). Annales de Paléontologie 79(1):1-18
  2. ^ P.Lambert, Checklist of the Echinoderms of British Columbia (April 2007), Royal British Columbia Museum
  3. ^ Yamashita,M., Embryonic Development of the Brittle-Star Amphipholis kochii in Laboratory Culture, Biol. Bull. 169: 131-142(Aug., 1985)
  4. ^ Hendler,G, Development of Amphioplus abditus (Verrill) (Echinodermata: Ophiuroidea): I. Larval Biology,Biol.Bull., Vol.152, No.1 (Feb., 1977)
  5. ^ P.Brehm, J.G. Morin. Localization and Characterization of Luminescent Cells in Ophiopsila californica and Amphipholis squamata (Echinodermata: Ophiuroidea) Biological Bulletin, Vol. 152, No. 1 (Feb., 1977)
  6. ^ Dewael Y, Mallefet J., Luminescence in ophiuroids (Echinodermata) does not share a common nervous control in all species, J Exp Biol. 2002 Mar;205
  7. ^ Hendler,G. Ophiuroid Skeleton Ontogeny Reveals Homologies Among Skeletal Plates of Adults: A Study of Amphiura filiformis, Amphiura stimpsonii and Ophiophragmus filograneus (Echinodermata), Biol.Bull. 174:20-29.(Feb.1988)
  8. ^ MarineSpecies.org - Amphiuridae Ljungman, 1867
  9. ^ Amphiuridae (TSN 157646). Integrated Taxonomic Information System.
  10. ^ The Paleobiology Database
  11. ^ R.L.Turner, Effects of Long-Term Exposure to Low Salinity on the Brackish-water Amphiurid Brittlestar Ophiophragmus filograneus (Lyman, 1875) From the Indian River Lagoon, Florida.Florida Scientist, Vol 70, 4 (Sept.2007)


This echinoderm-related article is a stub. You can help Wikipedia by expanding it.