Sclerasterias

Sclerasterias is a genus of starfish in the family Asteriidae. Adult individuals have five arms but small, immature individuals have six. This led to the giving of a separate generic name to the juveniles, Hydrasterias, before it was realised that only one genus was involved.[2] These young individuals often undergo fissiparity. The disc splits into two parts, each bearing three arms, and new arms develop on each part to complete the complement of arms. This sometimes happens repeatedly and may be an adaptation to life in cold, deep seas where most of the species are found.[2]

Sclerasterias
Scientific classification
Kingdom:
Animalia
Phylum:
Echinodermata
Subphylum:
Eleutherozoa
Class:
Asteroidea
Order:
Forcipulatida
Family:
Asteriidae
Genus:
Sclerasterias

Perrier, 1891 [1]
Species
See text.
Synonyms[1]
  • Australiaster
  • Eustolasterias
  • Hydrasterias
  • Rumbleaster
  • Triplasterias
Sclerasterias contorta, collection of the National Museum of Natural History (Paris, France).

Species

The following species are accepted by the World Register of Marine Species:[1]

  • Sclerasterias alexandri (Ludwig, 1905)
  • Sclerasterias contorta (Perrier, 1881)
  • Sclerasterias dubia (H. L. Clark, 1909)
  • Sclerasterias eructans (McKnight, 2006)
  • Sclerasterias euplecta (Fisher, 1906)
  • Sclerasterias eustyla (Sladen, 1889)
  • Sclerasterias guernei Perrier, 1891
  • Sclerasterias heteropaes Fisher, 1924
  • Sclerasterias mazophora (Wood-Mason & Alcock, 1891)
  • Sclerasterias mollis (Hutton, 1872)
  • Sclerasterias neglecta (Perrier, 1891)
  • Sclerasterias parvulus (Perrier, 1891)
  • Sclerasterias richardi (Perrier, 1882)
  • Sclerasterias satsumana Doderlein, 1902
  • Sclerasterias tanneri (Verrill, 1880)
gollark: See, if we make C→eso compilers, we only need to write each esoprogram once and compile it.
gollark: Then we should write C and compile it.(Slightly serious)
gollark: Is Esolangology Finished? Do More Ideas Even Exist?
gollark: ///
gollark: Define fluffy.

References
  1. Sclerasterias World Register of Marine Species. Retrieved 2011-09-30.
  2. Fisher, W. K. (1925-03-01). "Asexual Reproduction in the Starfish, Sclerasterias" (PDF). Biological Bulletin. 48 (3): 171–175. doi:10.2307/1536659. ISSN 0006-3185. JSTOR 1536659. Retrieved 2011-09-30.


This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.