Asterias microdiscus

Asterias microdiscus
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Echinodermata
Class: Asteroidea
Order: Forcipulatida
Family: Asteriidae
Genus: Asterias
Species:
A. microdiscus
Binomial name
Asterias microdiscus
Djakonov, 1950

Asterias microdiscus is a starfish native to the Pacific coasts of Far East Russia.[1]

The species was first described by Alexander Michailovitsch Djakonov in 1950[1][2][3] with the holotype collected in Avacha Bay in the Pacific Ocean, off the southeastern coast of the Kamchatka Peninsula, at a depth of 18m in 6.5°C water, in 1912.[4] Djakonov also named a forma brandtii.[1]

It has also been recovered around Karaginsky Island.[1]

The holotype was found on a silt substrate.[4] It has been found at depths of 3-10m,[1] perhaps 18m.[4]

Description

This starfish has five arms. It has an arm length to 8cm; the ratio between the length of the arm and the radius of its disc is 4.5:1.[1] It has planktonic larvae.[2]

References

  1. ^ a b c d e f Дьяконов, А.М. (1950). Морские звезды морей СССР [Определители по фауне. 34 (Tableaux analytiques de la faune de l'URSS 34)] (in Russian). St. Petersburg: Акаде́мии Нау́к СССР. p. 127.
  2. ^ a b Mah, Christopher L. (2008). "Asterias microdiscus Djakonov, 1950". World Register of Marine Species (WoRMS). Flanders Marine Institute. Retrieved 13 November 2019.
  3. ^ Jangoux, Michel; Lawrence, John M. (1 June 2001). Echinoderm studies 6. CRC Press. p. 262. ISBN 9789058093011.
  4. ^ a b c Smirnov, Igor S. (2019). "Sea Stars (Asteroidea) Catalogue • Asterias". Research Collections of the Zoological Institute RAS. Zoological Institute of the Russian Academy of Sciences. Retrieved 13 November 2019.

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