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Asterias is a genus of the Asteriidae family of sea stars. It includes several of the best-known species of sea stars, including the (Atlantic) common starfish, Asterias rubens, and the northern Pacific seastar, Asterias amurensis. The genus contains a total of eight species in all. All species have five arms and are native to shallow oceanic areas of cold to temperate parts of the Holarctic. These starfish have planktonic larvae. Asterias amurensis is an invasive species in Australia and can in some years become a pest in the Japanese mariculture industry.
The Valvatida are an order of starfish in the class Asteroidea, which contains 695 species in 172 genera in 17 families.
Asterias amurensis, also known as the Northern Pacific seastar and Japanese common starfish, is a seastar found in shallow seas and estuaries, native to the coasts of northern China, Korea, far eastern Russia, Japan, Alaska, the Aleutian Islands and British Columbia in Canada. Two forms are recognised: the nominate and formarobusta from the Strait of Tartary. It mostly preys on large bivalve molluscs, and it is mostly preyed on by other species of starfish. Population booms in Japan can affect the harvest of mariculture operations and are costly to combat.
The Echinasteridae are a family of starfish in the monotypic order Spinulosida. The family includes eight genera and about 133 species found on the seabed in various habitats around the world.
Ophiopholis is a genus of brittle stars (Ophiuroidea) found in oceans worldwide from tropics to temperate regions.
Goniasteridae constitute the largest family of sea stars, included in the order Valvatida. They are mostly deep-dwelling species, but the family also include several colorful shallow tropical species.
The Brisingids are deep-sea-dwelling starfish in the order Brisingida.
Henricia is a large genus of slender-armed sea stars belonging to the family Echinasteridae. It contains about fifty species.
Odontohenricia is a genus of starfish in the family Echinasteridae in the order Spinulosida.
Leptasterias is a genus of starfish in the family Asteriidae. Members of this genus are characterised by having six arms although five-armed specimens sometimes occur. L. muelleri is the type species. The taxonomy of the genus is confusing and Leptasterias hexactis seems to be a species complex. Some species brood their eggs.
Solaster is a genus of sea stars in the family Solasteridae.
Solaster spectabilis is an extant species of starfish described in 2011, and indigenous to the waters surrounding the Aleutian Islands in the North Pacific Ocean.
The spiny sand seastar is a species of starfish in the family Luidiidae. It is found in shallow parts of the China Sea and in the vicinity of the Korean archipelago. The tissues of this starfish have been found to contain several secondary metabolites with medicinal potential.
Trophodiscus is a genus of starfish in the family Astropectinidae. There are only two species, both found in fairly deep waters in the Sea of Okhotsk. Trophodiscus almus is also found in the Sea of Japan and around the Japanese island of Hokkaido. These starfish are very unusual in that the young are brooded on the upper surface of the female.
Circeaster is a genus of abyssal sea stars in the family Goniasteridae.
Astroceramus is a genus of abyssal sea stars in the family Goniasteridae.
Pteraster is a genus of sea stars in the family Pterasteridae.
Asterias rathbuni is a starfish native to the Pacific coasts of Alaska in the United States and Far East Russia. There are two subspecies.
Asterias argonauta is a starfish native to the Pacific coasts of Far East Russia.
Asterias microdiscus is a starfish native to the Pacific coasts of Far East Russia.
References
- 1 2 Mah, C. (2015). Mah CL (ed.). "Aleutihenricia Clark & Jewett, 2010". World Asteroidea database. World Register of Marine Species . Retrieved 2015-07-23.
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