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Leptasterias Hyperborea
''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. Description and biology ''Leptasterias'' is a genus of starfish in the family Asteriidae and order Forcipulatida. It is often noted that members in the genus have six arms, however, occasionally five-armed specimen can occur. They are also characterized by having several cryptic species complexes. They are often found in the waters of Alaska to central California in rocky intertidal and subtidal habitats. They are typically small in size, measuring less than 6 cm from ray tip to ray tip. They mature around the age of two. They are known for being lecithotrophic, providing the embryo with no nutrition other than the yolk in its egg. The fe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nucella Lima
''Nucella lima'', commonly known as the File Dog Winkle, is a species of sea snail, a marine gastropod mollusk in the family Muricidae, the murex snails or rock snails. Distribution This species is distributed in the Pacific Ocean from the Arctic to Baja California, Mexico; and along Northern Japan Japan is an island country in East Asia. Located in the Pacific Ocean off the northeast coast of the Asia, Asian mainland, it is bordered on the west by the Sea of Japan and extends from the Sea of Okhotsk in the north to the East China Sea .... Description The shell size varies between 19 mm and 51 mm. References External links * Muricidae Gastropods described in 1791 Taxa named by Johann Friedrich Gmelin {{Muricidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leptasterias Muelleri
''Leptasterias muelleri'', the northern starfish, is a species of starfish in the family Asteriidae. It is found in the Arctic Ocean and the northern Atlantic Ocean. It is a predator and scavenger and is unusual among starfish in that it broods its young. Description The ''Leptasterias muelleri'' is a small starfish that is often about in diameter but can grow to . It has a small disc and five broad, tapering arms that are demarcated from the disc. The aboral (upper) surface is rough, being covered with longitudinally arranged, knob-shaped spines. These are surrounded by small pedicellariae (claw-shaped structures) and interspersed by papulae (respiratory projections). The oral (under) surface of the arms has four longitudinal rows of tube feet with suckers. The colour of this starfish may be pale purple, pink, or green, with pale-coloured tips to the arms. Green individuals have a symbiotic Symbiosis (Ancient Greek : living with, companionship < : together; and ''bíōsis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leptasterias Fisheri
''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. Description and biology ''Leptasterias'' is a genus of starfish in the family Asteriidae and order Forcipulatida. It is often noted that members in the genus have six arms, however, occasionally five-armed specimen can occur. They are also characterized by having several cryptic species complexes. They are often found in the waters of Alaska to central California in rocky intertidal and subtidal habitats. They are typically small in size, measuring less than 6 cm from ray tip to ray tip. They mature around the age of two. They are known for being lecithotrophic, providing the embryo with no nutrition other than the yolk in its egg. The fe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |