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Astropecten Platyacanthus
''Astropecten platyacanthus'' is a sea star of the family Astropectinidae. Habitat and behaviour Starfishes of genus Astropecten live on mobile seabed (sandy, muddy or gravel seabed) and they remain largely buried under sediment during the day. During the late afternoon and the night starfishes go out to hunt mainly bivalve molluscs, which are their favourite preys. This species lives only in the Mediterranean Sea and it lives on all mobile seabed at depths between 1 and 60 m, but it is more frequently in seabed of mixed coarse sand and mud at 1–4 m depth. This species is active and easy to find during the night but also during the day, especially in early morning and late afternoon. Description It has narrow and high superomarginal plates, laterally covered with scales and small spines (on vertical face). Every superomarginal plates is equipped with one strong spine, usually sharp but irregularly shaped, slightly flattened laterally, often yellow or orange but rarely off whi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Astropecten Platyacanthus Koufonissi08 2920 Dett1
''Astropecten'' is a genus of sea stars of the family (biology), family Astropectinidae. Identification These sea stars are similar one to each other and it can be difficult to determine with certainty the species only from a photograph. To have a certain determination, in some cases, animals should be analyzed in the laboratory or using genetic testing, but often it isn’t possible. In order to determine the species, with a reasonable margin of error, it’s necessary to observe the appearance of the animal, in particular, based on some typical features described by principal authors that have analyzed over the years a large number of specimens in the laboratory. The main elements, to determine the various species from photo, are: the appearance of the dorsal marginal plates and spines, the size, the shape of disc and arms. For a good identification by sea photo it is important to take a complete picture of all the subject, a picture of the detail of the marginal plates and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sea Star
Starfish or sea stars are Star polygon, star-shaped echinoderms belonging to the class (biology), class Asteroidea (). Common usage frequently finds these names being also applied to brittle star, ophiuroids, which are correctly referred to as brittle stars or basket stars. Starfish are also known as asteroids due to being in the class Asteroidea. About 1,900 species of starfish live on the seabed in all the world's oceans, from warm, tropics, tropical zones to frigid, polar regions of Earth, polar regions. They are found from the intertidal zone down to abyssal zone, abyssal depths, at below the surface. Starfish are marine invertebrates. They typically have a central disc and usually five arms, though some species have a larger number of arms. The aboral or upper surface may be smooth, granular or spiny, and is covered with overlapping plates. Many species are brightly coloured in various shades of red or orange, while others are blue, grey or brown. Starfish have tube fee ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Astropectinidae
The Astropectinidae are a family of sea stars in the order Paxillosida. Usually, these starfish live on the seabed and immerse themselves in soft sediment such as sand and mud. They are not to be confused with species in the genus '' Archaster'', which share similar shape and life habits, but belong to the family Archasteridae (order Valvatida). Genera There are 27 genera in the family: * '' Astromesites'' Fisher, 1913 * ''Astropecten'' Gray, 1840 * '' Astropectinides'' Verrill, 1914 * '' Bathybiaster'' Danielssen & Koren, 1883 * '' Blakiaster'' Perrier, 1881 * '' Bollonaster'' McKnight, 1977 * '' Bunodaster'' Verrill, 1909 * '' Craspidaster'' Sladen, 1889 * '' Ctenophoraster'' Fisher, 1906 * '' Ctenopleura'' Fisher, 1913 * '' Dipsacaster'' Alcock, 1893 * '' Dytaster'' Sladen, 1889 * '' Koremaster'' Fisher, 1913 * '' Leptychaster'' E.A. Smith, 1876 * '' Lonchotaster'' Sladen, 1889 * '' Macroptychaster'' H.E.S. Clark, 1963 * '' Mimastrella'' Fisher, 1916 * '' Patagiaster'' Fisher ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Astropecten
''Astropecten'' is a genus of sea stars of the family Astropectinidae. Identification These sea stars are similar one to each other and it can be difficult to determine with certainty the species only from a photograph. To have a certain determination, in some cases, animals should be analyzed in the laboratory or using genetic testing, but often it isn’t possible. In order to determine the species, with a reasonable margin of error, it’s necessary to observe the appearance of the animal, in particular, based on some typical features described by principal authors that have analyzed over the years a large number of specimens in the laboratory. The main elements, to determine the various species from photo, are: the appearance of the dorsal marginal plates and spines, the size, the shape of disc and arms. For a good identification by sea photo it is important to take a complete picture of all the subject, a picture of the detail of the marginal plates and to measure as pr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Astropecten Bispinosus
''Astropecten bispinosus'' is a sea star of the family Astropectinidae from the Mediterranean Sea. Habitat and behaviour Starfishes of genus Astropecten live on mobile seabed (sandy, muddy or gravel seabed) and they remain largely buried under sediment during the day. During the late afternoon and during the night starfishes go out to hunt mainly bivalve molluscs, which are their favourite preys. This species lives only in the Mediterranean Sea and it prefers sandy seabed near meadows of ''Cymodocea nodosa'' and it lives at depths between 2 and 100 m. This species is active and easy to find especially in the late afternoon, but sometimes it is possible to find it during the day or during the night. Description This sea star has very narrow and high superomarginal plates with a bare area on vertical face of them (visible in the lateral side of arms between inferomarginal spines and superomarginal spines). Every superomarginal plate is equipped with 1 very long, sharp, clean co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Astropecten Platyacanthus Sardegna09 Dett2
''Astropecten'' is a genus of sea stars of the family Astropectinidae. Identification These sea stars are similar one to each other and it can be difficult to determine with certainty the species only from a photograph. To have a certain determination, in some cases, animals should be analyzed in the laboratory or using genetic testing, but often it isn’t possible. In order to determine the species, with a reasonable margin of error, it’s necessary to observe the appearance of the animal, in particular, based on some typical features described by principal authors that have analyzed over the years a large number of specimens in the laboratory. The main elements, to determine the various species from photo, are: the appearance of the dorsal marginal plates and spines, the size, the shape of disc and arms. For a good identification by sea photo it is important to take a complete picture of all the subject, a picture of the detail of the marginal plates and to measure as pr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Astropecten Platyacanthus Sardegna09 A Cm18 5431 Dett3
''Astropecten'' is a genus of sea stars of the family Astropectinidae. Identification These sea stars are similar one to each other and it can be difficult to determine with certainty the species only from a photograph. To have a certain determination, in some cases, animals should be analyzed in the laboratory or using genetic testing, but often it isn’t possible. In order to determine the species, with a reasonable margin of error, it’s necessary to observe the appearance of the animal, in particular, based on some typical features described by principal authors that have analyzed over the years a large number of specimens in the laboratory. The main elements, to determine the various species from photo, are: the appearance of the dorsal marginal plates and spines, the size, the shape of disc and arms. For a good identification by sea photo it is important to take a complete picture of all the subject, a picture of the detail of the marginal plates and to measure as pr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Astropecten Spinulosus
''Astropecten spinulosus'' is a sea star of the family Astropectinidae. Habitat and behaviour Starfishes of genus Astropecten live on mobile seabed (sandy, muddy or gravel seabed) and they remain largely buried under sediment during the day. During the late afternoon and the night starfishes go out to hunt mainly bivalve molluscs, which are their favourite prey. This species lives only in the Mediterranean Sea and it prefers sandy seabed near meadows '' Posidonia oceanica'' or ''Cymodocea nodosa'' or other mobile seabed in areas very rich in algae from 1 to 50 m deep. This species is active and easy to find during the night, sometimes it is possible to find it in the late afternoon. Description It has very short superomarginal plates (the height of the vertical face is slightly larger than the width of plate), completely covered by scales and very small spines. Only from 1 to 3 small spines on the top of plate can be considered a real spines (the other spines are too small). T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Astropecten Jonstoni
''Astropecten jonstoni'' is a sea star of the family Astropectinidae. Habitat and behaviour Starfishes of genus Astropecten live on mobile seabed (sandy, muddy or gravel seabed) and they remain largely buried under sediment during the day. During the late afternoon and the night starfishes go out to hunt mainly bivalve molluscs, which are their favourite preys. Unlike other Astropecten, this species is active and easy to find during day, especially in early morning and late afternoon. This species lives only in the Mediterranean Sea and it prefers sandy seabed at low depths as between 1 and 12 m. Description This sea star has Astropecten, superomarginal plates with a very short spines or without spines (usually the plates between the arms are devoid of spines). The Astropecten, inferomarginal plate has a short and pot external spine, arranged with great regularity, normally kept parallel to one another and rather rigid. The Astropecten, inferomarginal spines have dark orange co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
