Asterias microdiscus
| Asterias microdiscus | |
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| Species: | A. microdiscus
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| Asterias microdiscus Djakonov, 1950
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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
- ^ 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.
- ^ a b Mah, Christopher L. (2008). "Asterias microdiscus Djakonov, 1950". World Register of Marine Species (WoRMS). Flanders Marine Institute. Retrieved 13 November 2019.
- ^ Jangoux, Michel; Lawrence, John M. (1 June 2001). Echinoderm studies 6. CRC Press. p. 262. ISBN 9789058093011.
- ^ 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.