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Diplasterias Brucei
''Diplasterias brucei'' is a species of starfish in the family Asteriidae. It is found in the Pacific Ocean and Southern Ocean. It is a predator and scavenger and is unusual among starfish in that it broods its young. Description ''D. brucei'' usually has five arms, but in the vicinity of South Georgia, a six-armed form is common. This starfish varies in colour from a pale bluish-green to a yellowish or orange hue. The maximum size is about across.''Diplasterias brucei''; (Koehler, 1908) Antarctic Field Guide. Retrieved 10 February 2017. Distribution ''D. brucei'' is found in the Pacific Ocean and Southern Ocean. In Antarctica, the species is found on the seabed in the |
Animal
Animals are multicellular, eukaryotic organisms in the Kingdom (biology), biological kingdom Animalia. With few exceptions, animals Heterotroph, consume organic material, Cellular respiration#Aerobic respiration, breathe oxygen, are Motility, able to move, can Sexual reproduction, reproduce sexually, and go through an ontogenetic stage in which their body consists of a hollow sphere of Cell (biology), cells, the blastula, during Embryogenesis, embryonic development. Over 1.5 million Extant taxon, living animal species have been Species description, described—of which around 1 million are Insecta, insects—but it has been estimated there are over 7 million animal species in total. Animals range in length from to . They have Ecology, complex interactions with each other and their environments, forming intricate food webs. The scientific study of animals is known as zoology. Most living animal species are in Bilateria, a clade whose members have a Symmetry in biology#Bilate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Biodiversity
Biodiversity or biological diversity is the variety and variability of life on Earth. Biodiversity is a measure of variation at the genetic (''genetic variability''), species (''species diversity''), and ecosystem (''ecosystem diversity'') level. Biodiversity is not distributed evenly on Earth; it is usually greater in the tropics as a result of the warm climate and high primary productivity in the region near the equator. Tropical forest ecosystems cover less than 10% of earth's surface and contain about 90% of the world's species. Marine biodiversity is usually higher along coasts in the Western Pacific, where sea surface temperature is highest, and in the mid-latitudinal band in all oceans. There are latitudinal gradients in species diversity. Biodiversity generally tends to cluster in hotspots, and has been increasing through time, but will be likely to slow in the future as a primary result of deforestation. It encompasses the evolutionary, ecological, and cultural ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Odontaster Meridionalis
''Odontaster'' is a genus of sea stars. The type species is ''Odontaster hispidus''. Species The following species are listed in the World Register of Marine Species: *'' Odontaster aucklandensis'' McKnight, 1973 *'' Odontaster australis'' H.L.Clark, 1926 *'' Odontaster benhami'' (Mortensen, 1925) *'' Odontaster crassus'' Fisher, 1905 *'' Odontaster hispidus'' Verrill, 1880 *'' Odontaster mediterraneus'' (Marenzeller, 1893) *'' Odontaster meridionalis'' (E.A. Smith, 1876) *'' Odontaster pearsei'' Janosik & Halanych, 2010 *'' Odontaster penicillatus'' (Philippi, 1870) *'' Odontaster robustus'' Verrill, 1899 *'' Odontaster rosagemmae'' McKnight, 2001 *'' Odontaster roseus'' Janosik & Halanych, 2010 *'' Odontaster setosus'' (Verrill, 1899) *''Odontaster validus ''Odontaster validus'' is a species of sea star in the family Odontasteridae. Its range includes the Southern Ocean and the seas around the mainland and islands of Antarctica. Description ''Odontaster validus'' can grow ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Acodontaster Hodgsoni
''Acodontaster'' is a genus of starfish in the family Odontasteridae. Members of the genus are found in the Southern Ocean, in the waters off Antarctica and the island groups nearby. ''Acodontaster elongatus'' is additionally found further north in the Atlantic Ocean on the eastern seaboard of South America. Species The following species are listed in the World Register of Marine Species: *'' Acodontaster capitatus'' (Koehler, 1912) *''Acodontaster conspicuus ''Acodontaster conspicuus'' is a species of starfish in the family Odontasteridae. It is found in the Southern Ocean, in the waters off Antarctica and the island groups nearby. Description ''Acodontaster conspicuus'' grows to about 30 cm ( ...'' (Koehler, 1920) *'' Acodontaster elongatus'' (Sladen, 1889) *'' Acodontaster hodgsoni'' (Bell, 1908) *'' Acodontaster marginatus'' (Koehler, 1912) References Odontasteridae {{Asteroidea-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Acodontaster Conspicuus
''Acodontaster conspicuus'' is a species of starfish in the family Odontasteridae. It is found in the Southern Ocean, in the waters off Antarctica and the island groups nearby. Description ''Acodontaster conspicuus'' grows to about 30 cm (12 in) in diameter. It has 5 arms and the body has a cushion-like appearance, being thick except around the margins where there is a thin flat area. The upper surface has radially arranged granulations. The colour varies but is usually orange or brown.Acodontaster conspicuus (Koehler, 1920) Antarctic Field Guide. Retrieved 2011-11-27. Distribution ''Acodontaster conspicuus'' is found in the cold seas around Antarctica, including the |
Margarella
''Margarella'' is a genus of sea snails, marine gastropod molluscs in the subfamily Margarellinae of the family Calliostomatidae.Bouchet, P. (2012). Margarella Thiele, 1893. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=196989 on 2012-12-07 Species Species within the genus ''Margarella'' include: * '' Margarella achilles'' (Strebel, 1908) * '' Margarella antarctica'' (Lamy, 1905) * '' Margarella bouvetia'' Powell, 1951 * '' Margarella crebrilirulata'' (E.A. Smith, 1907) * '' Margarella expansa'' (Sowerby I, 1838) * '' Margarella gunnerusensis'' Numanami, 1996 * '' Margarella jason'' A. W. B. Powell, 1951 * '' Margarella macquariensis'' Hedley, 1916 * '' Margarella obsoleta'' A. W. B. Powell, 1951 * '' Margarella porcellana'' A. W. B. Powell, 1951 * ''Margarella pruinosa'' (Rochebrune & Mabille, 1885) * '' Margarella refulgens'' (E.A. Smith, 1907) * † '' Margarella runcinata'' Marwick, 1928 * '' Margarella steineni'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Onoba (gastropod)
''Onoba'' is a genus of minute sea snails, marine gastropod mollusks or micromollusks in the family Rissoidae. Species Species within the genus ''Onoba'' include: *''Onoba aculeus'' (Gould, 1841) *'' Onoba aedonis'' (Watson, 1886) *'' Onoba alaskana'' (Dall, 1886) *'' Onoba algida'' Ponder & Worsfold, 1994 *'' Onoba amissa'' Ponder & Worsfold, 1994 *'' Onoba analoga'' (Powell, 1937) *'' Onoba anderssoni'' (Strebel, 1908) *'' Onoba aurivillii'' (Dall, 1887) *'' Onoba bakeri'' (Bartsch, 1910) *'' Onoba biangulata'' (Laws, 1936) † *'' Onoba brachia'' (Watson, 1886) *'' Onoba breogani'' Rolán, 2008 *'' Onoba brunnea'' Golikov & Kussakin, 1978 *'' Onoba carpenteri'' (Weinkauff, 1885) *'' Onoba castanella'' (Dall, 1886) *'' Onoba cerinella'' Dall, 1887 *'' Onoba cingulata'' (Middendorff, 1849) *'' Onoba compsa'' Bartsch in Golikov, Gulbin & Sirenko, 1987 *'' Onoba crassicordata'' Worsfold, Avern & Ponder, 1993 *'' Onoba cryptolira'' (Laws, 1950) † *'' Onoba dalli'' (Bartsch, 1927) ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gastropoda
The gastropods (), commonly known as snails and slugs, belong to a large taxonomic class of invertebrates within the phylum Mollusca called Gastropoda (). This class comprises snails and slugs from saltwater, from freshwater, and from land. There are many thousands of species of sea snails and slugs, as well as freshwater snails, freshwater limpets, and land snails and slugs. The class Gastropoda contains a vast total of named species, second only to the insects in overall number. The fossil history of this class goes back to the Late Cambrian. , 721 families of gastropods are known, of which 245 are extinct and appear only in the fossil record, while 476 are currently extant with or without a fossil record. Gastropoda (previously known as univalves and sometimes spelled "Gasteropoda") are a major part of the phylum Mollusca, and are the most highly diversified class in the phylum, with 65,000 to 80,000 living snail and slug species. The anatomy, behavior, feeding, a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Limatula Hodgsoni
''Limatula hodgsoni'' is a species of bivalve mollusc in the family Limidae, the file shells or file clams. It is native to the seas around Antarctica. Description ''Limatula hodgsoni'' grows to a length of , a height of and a diameter of . The shell is white, oblong, thin, narrow above and somewhat convex; the posterior side is less curved than the anterior. The umbones are central and the ligament area is narrow and diamond-shaped. The valves are sculpted by 30 to 35 squamate ribs separated by grooves slightly narrower than the ribs. The ribs are finely marked by the annual growth lines. Distribution ''Limatula hodgsoni'' is found on the seabed of the waters around Antarctica at depths down to at least . It is very common in the zone deeper than which is the lower limit for anchor ice formation. In some areas, this zone is characterised by a layer of sponge spicules and dead mollusc shells a metre or more thick, overgrown by living sponges. This matrix is a biodiverse hab ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bivalvia
Bivalvia (), in previous centuries referred to as the Lamellibranchiata and Pelecypoda, is a class of marine and freshwater molluscs Mollusca is the second-largest phylum of invertebrate animals after the Arthropoda, the members of which are known as molluscs or mollusks (). Around 85,000 extant species of molluscs are recognized. The number of fossil species is estim ... that have laterally compressed bodies enclosed by a shell consisting of two hinged parts. As a group, bivalves have no head and they lack some usual molluscan organs, like the radula and the odontophore. They include the clams, oysters, Cockle (bivalve), cockles, mussels, scallops, and numerous other family (biology), families that live in saltwater, as well as a number of families that live in freshwater. The majority are filter feeders. The gills have evolved into Ctenidium (mollusc), ctenidia, specialised organs for feeding and breathing. Most bivalves bury themselves in sediment, where they a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bryozoa
Bryozoa (also known as the Polyzoa, Ectoprocta or commonly as moss animals) are a phylum of simple, aquatic invertebrate animals, nearly all living in sedentary colonies. Typically about long, they have a special feeding structure called a lophophore, a "crown" of tentacles used for filter feeding. Most marine bryozoans live in tropical waters, but a few are found in oceanic trenches and polar waters. The bryozoans are classified as the marine bryozoans (Stenolaemata), freshwater bryozoans (Phylactolaemata), and mostly-marine bryozoans (Gymnolaemata), a few members of which prefer brackish water. 5,869living species are known. At least two genera are solitary (''Aethozooides'' and ''Monobryozoon''); the rest are colonial. The terms Polyzoa and Bryozoa were introduced in 1830 and 1831, respectively. Soon after it was named, another group of animals was discovered whose filtering mechanism looked similar, so it was included in Bryozoa until 1869, when the two groups were no ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
