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Parechinidae
The Parechinidae are a family of sea urchins in the class Echinoidea. Characteristics All camarodonts have imperforate tubercles and compound ambulacral plates. In addition, the characteristics of the parechinids include the interambulacral plates being densely covered with tubercles with many subequal tubercles, and the buccal notches being insignificant in size. The globiferous pedicellaria A pedicellaria (plural: pedicellariae) is a small wrench- or claw-shaped appendage with movable jaws, called valves, commonly found on echinoderms (phylum Echinodermata), particularly in sea stars (class Asteroidea) and sea urchins (class Echi ...e between the spines have widely open blades each with many lateral teeth. The Natural History Museum. Retrieved 2011-08-25. < ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paracentrotus Lividus
''Paracentrotus lividus'' is a species of sea urchin in the family Parechinidae commonly known as the purple sea urchin. It is the type species of the genus and occurs in the Mediterranean Sea and eastern Atlantic Ocean. Description ''Paracentrotus lividus'' has a circular, flattened greenish test with a diameter of up to seven centimetres. The test is densely clothed in long and sharply pointed spines that are usually purple but are occasionally other colours including dark brown, light brown and olive green. There are five or six pairs of pores on each ambulacral plate. The tube feet are in groups of 5 or 6, arranged in small arcs.Purple sea urchin - ''Paracentrotus lividus'' |
Paracentrotus
''Paracentrotus'' is a genus of sea urchin in the family Parechinidae The Parechinidae are a family of sea urchins in the class Echinoidea. Characteristics All camarodonts have imperforate tubercles and compound ambulacral plates. In addition, the characteristics of the parechinids include the interambulacral pl ... described in 1903 by Mortensen. List of Species References External links * * {{Taxonbar, from=Q3363147 Parechinidae ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Psammechinus Miliaris
''Psammechinus miliaris'' is a species of sea urchin in the family Parechinidae. It is sometimes known as the green sea urchin or shore sea urchin. It is found in shallow areas of the eastern Atlantic Ocean and the North Sea. Description ''P. miliaris'' can reach a diameter of . The test is globular, somewhat flattened dorso-ventrally, and up to five centimetres in diameter. It is covered in short, equi-length robust spines. The test and spines of shallow water specimens are purplish-brown but specimens from deeper water have a greenish test and pale coloured spines with purple tips. If individuals are transferred from one depth range to another, they retain their original colouration in their new location. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Psammechinus Microtuberculatus
''Psammechinus microtuberculatus'', also known as the green sea urchin, in the family Parechinidae. It was formerly known as ''Echinus microtuberculatus'', and thought to be of the genus '' Echinus''. Description This is a small, brown, herbivorous sea urchin nearly spherical in shape. It has with short spines greenish or whitish in colour. It grows to a maximum diameter of 5 centimetres. Distribution ''Psammechinus microtuberculatus'' is found in the western and eastern Atlantic Ocean, the Adriatic Sea and Aegean Sea. It also occurs throughout the entire Mediterranean Sea, though very rare. Habitat This species occurs in the benthic zone at depths of between 1 and 685 metres. It prefers to live near sandy areas, and can be found on hard bottoms of mud or rock. Behavior Psammechinus microtuberculatus is capable of protective camouflage. Under hypoxic conditions, it has been observed to discard its "protecting camouflages when confronted with low DO issolved oxygenconce ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Psammechinus
''Psammechinus'' is a genus of sea urchins in the family Parechinidae The Parechinidae are a family of sea urchins in the class Echinoidea. Characteristics All camarodonts have imperforate tubercles and compound ambulacral plates. In addition, the characteristics of the parechinids include the interambulacral pl ... containing two species: References Parechinidae {{Echinoidea-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Psammechinus Miliaris 167605062
''Psammechinus'' is a genus of sea urchins in the family Parechinidae The Parechinidae are a family of sea urchins in the class Echinoidea. Characteristics All camarodonts have imperforate tubercles and compound ambulacral plates. In addition, the characteristics of the parechinids include the interambulacral pl ... containing two species: References Parechinidae {{Echinoidea-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paracentrotus Gaimardi
''Paracentrotus'' is a genus of sea urchin in the family Parechinidae The Parechinidae are a family of sea urchins in the class Echinoidea. Characteristics All camarodonts have imperforate tubercles and compound ambulacral plates. In addition, the characteristics of the parechinids include the interambulacral pl ... described in 1903 by Mortensen. List of Species References External links * * {{Taxonbar, from=Q3363147 Parechinidae ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paracentrotus Lividus Banyuls
''Paracentrotus'' is a genus of sea urchin in the family Parechinidae The Parechinidae are a family of sea urchins in the class Echinoidea. Characteristics All camarodonts have imperforate tubercles and compound ambulacral plates. In addition, the characteristics of the parechinids include the interambulacral pl ... described in 1903 by Mortensen. List of Species References External links * * {{Taxonbar, from=Q3363147 Parechinidae ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Parechinus
''Parechinus angulosus'', the Cape urchin, is a sea urchin in the family Parechinidae The Parechinidae are a family of sea urchins in the class Echinoidea. Characteristics All camarodonts have imperforate tubercles and compound ambulacral plates. In addition, the characteristics of the parechinids include the interambulacral pl ... endemic to southern Africa. Synonyms *''Cidaris angulosus'' Leske, 1778 *''Cidaris angulosus minor'' Leske, 1778 *''Echinus angulosus minor'' (Leske, 1778) *''Echinus minimus'' Blainville, 1825 *''Echinus subangulosus'' Lamarck, 1816 *''Parechinus angulosus pallidus'' H.L. Clark *''Parechinus annulatus'' (Mortensen, 1909) *''Protocentrotus angulosus'' (Leske, 1778) *''Protocentrotus annulatus'' Mortensen, 1909 *''Psammechinus subangulosus'' (Lamarck, 1816) Description Test round, diameter up to 60 mm, with a dense covering of short sharp spines which do not exceed 20% of test diameter. Test colour usually green, spines purple, but also ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Loxechinus Albus In Aquarium
''Loxechinus albus'' is an echinoderm of the family Parechinidae, native to coastal southern South America, ranging from Ecuador, along the entire coasts of Peru and Chile, to Argentina, as well as the Falkland Islands. It is the only species in the genus ''Loxechinus''. It is known as the Chilean sea urchin or red sea urchin, but the latter name is typically used for the North Pacific '' Mesocentrotus franciscanus'' and it is not the only species of sea urchin in Chile (although it is the most common and widespread large sea urchins in that country). ''L. albus'' is found on rocky reefs and shores in the intertidal and subtidal zones to a depth of .Carolina J. Zagal and Consuelo Hermosilla C. (2007). ''Guía de Invertebrados marinos del sur de Chile''. Editorial Fantástico Sur, Punta Arenas, Chile Description ''Loxechinus albus'' is a fast-growing, relatively large sea urchin with a test diameter of up to , although the far southernmost populations tend to grow slower and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Loxechinus
''Loxechinus albus'' is an echinoderm of the family Parechinidae, native to coastal southern South America, ranging from Ecuador, along the entire coasts of Peru and Chile, to Argentina, as well as the Falkland Islands. It is the only species in the genus ''Loxechinus''. It is known as the Chilean sea urchin or red sea urchin, but the latter name is typically used for the North Pacific '' Mesocentrotus franciscanus'' and it is not the only species of sea urchin in Chile (although it is the most common and widespread large sea urchins in that country). ''L. albus'' is found on rocky reefs and shores in the intertidal and subtidal zones to a depth of .Carolina J. Zagal and Consuelo Hermosilla C. (2007). ''Guía de Invertebrados marinos del sur de Chile''. Editorial Fantástico Sur, Punta Arenas, Chile Description ''Loxechinus albus'' is a fast-growing, relatively large sea urchin with a test diameter of up to , although the far southernmost populations tend to grow slower and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Loxechinus Albus
''Loxechinus albus'' is an echinoderm of the family Parechinidae, native to coastal southern South America, ranging from Ecuador, along the entire coasts of Peru and Chile, to Argentina, as well as the Falkland Islands. It is the only species in the genus ''Loxechinus''. It is known as the Chilean sea urchin or red sea urchin, but the latter name is typically used for the North Pacific '' Mesocentrotus franciscanus'' and it is not the only species of sea urchin in Chile (although it is the most common and widespread large sea urchins in that country). ''L. albus'' is found on rocky reefs and shores in the intertidal and subtidal zones to a depth of .Carolina J. Zagal and Consuelo Hermosilla C. (2007). ''Guía de Invertebrados marinos del sur de Chile''. Editorial Fantástico Sur, Punta Arenas, Chile Description ''Loxechinus albus'' is a fast-growing, relatively large sea urchin with a test diameter of up to , although the far southernmost populations tend to grow slower and reach ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
