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Dragmacidon Lunaecharta
''Dragmacidon lunaecharta'', also known as the red ball sponge or red boring sponge, is a species of sea sponge found in the western Atlantic Ocean. It feeds on plankton. These sponges do not attach themselves to rocks or the sea floor but drift in water currents. Its main predators are sea slugs. It has been kept in home aquariums. Taxonomy It was first described in 1886 by Stuart Oliver Ridley and Arthur Dendy as ''Axinella lunaecharta,'' but in 1887, in their final report, they transferred it to the genus, ''Pseudaxinella.'' In 1917, E.F. Hallman revised some genera in the family, Axinellidae, and transferred it to the genus, ''Dragmacidon ''Dragmacidon'' is a genus of sponges in the family Axinellidae Axinellidae is a family of sponges in the order Axinellida. This family includes some photo-synthetic sponges that occur throughout the world's coral reefs. They are amongst the ...''. References External links Plate XXXVII ''Axinella lunaecharta'' Axinellidae T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stuart Oliver Ridley
Stuart Oliver Ridley (1853–1935) was an English cleric and zoologist. Early life He was born in 1853, the son of the Rev. Oliver Matthew Ridley and his first wife Laura Pole Stuart (died 1858), daughter of Sir William Stuart; Henry Nicholas Ridley was a younger brother. For the first years of his life his father was rector of West Harling in Norfolk, moving to Cobham, Kent in 1860. He was educated at Haileybury College.Edward J. Salisbury, ''Henry Nicholas Ridley. 1855-1956'', Biographical Memoirs of Fellows of the Royal Society Vol. 3 (Nov., 1957), pp. 141-159, at p. 142. Published by: Royal Society Ridley matriculated at Magdalen College, Oxford in 1872. He moved in 1873 to Exeter College, where he graduated B.A. in 1875 (1st class in Natural Sciences), M.A. in 1881. He also studied under Ernst Haeckel. He taught at Friars School, Bangor, and worked in 1878 at the British Museum as an assistant. Clerical career In 1887 Ridley was ordained deacon, and in 1888 priest at Carli ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arthur Dendy
Arthur Dendy (20 January 1865, in Manchester – 24 March 1925, in London) was an English zoologist known for his work on Sponge, marine sponges and the terrestrial invertebrates of Victoria, Australia, notably including the "living fossil" ''Peripatus''. He was in turn professor of zoology in New Zealand, in South Africa and finally at King's College London. He was a List of Fellows of the Royal Society D,E,F, Fellow of the Royal Society. Family life Dendy's parents were John Dendy, a silk fabric maker of Manchester, and Sarah Beard, daughter of John Relly Beard. His sisters included Mary Dendy and Helen Bosanquet. He married Ada Margaret Courtauld on 5 December 1888. They had four children, three daughters—including the artist Vera Ellen Poole (1890–1965)—and one son. Career He was educated in zoology at Owens College, Manchester, gaining his M.Sc. in 1887 and his D.Sc. in 1891. He worked on part of the report of the Challenger expedition (1872–1876), describing ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sea Sponge
Sponges or sea sponges are primarily marine invertebrates of the animal phylum Porifera (; meaning 'pore bearer'), a basal clade and a sister taxon of the diploblasts. They are sessile filter feeders that are bound to the seabed, and are one of the most ancient members of macrobenthos, with many historical species being important reef-building organisms. Sponges are multicellular organisms consisting of jelly-like mesohyl sandwiched between two thin layers of cells, and usually have tube-like bodies full of pores and channels that allow water to circulate through them. They have unspecialized cells that can transform into other types and that often migrate between the main cell layers and the mesohyl in the process. They do not have complex nervous, digestive or circulatory systems. Instead, most rely on maintaining a constant water flow through their bodies to obtain food and oxygen and to remove wastes, usually via flagella movements of the so-called " collar cells". ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plankton
Plankton are the diverse collection of organisms that drift in Hydrosphere, water (or atmosphere, air) but are unable to actively propel themselves against ocean current, currents (or wind). The individual organisms constituting plankton are called plankters. In the ocean, they provide a crucial source of food to many small and large aquatic organisms, such as bivalves, fish, and baleen whales. Marine plankton include bacteria, archaea, algae, protozoa, microscopic fungi, and drifting or floating animals that inhabit the saltwater of oceans and the brackish waters of estuaries. fresh water, Freshwater plankton are similar to marine plankton, but are found in lakes and rivers. Mostly, plankton just drift where currents take them, though some, like jellyfish, swim slowly but not fast enough to generally overcome the influence of currents. Although plankton are usually thought of as inhabiting water, there are also airborne versions that live part of their lives drifting in the at ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Axinellidae
Axinellidae is a family of sponges in the order Axinellida. This family includes some photo-synthetic sponges that occur throughout the world's coral reefs. They are amongst the more common sponges seen in the aquarium trade but are usually not successful species in captivity and not ones that thrive in the small household tank environment. They are common throughout the Indian Ocean and the Pacific Ocean coral reefs. Species which derive their nutrition from sunlight must stay fairly close to the surface in order for their zooxanthellae to synthesize light into the sugars these sponges use to survive. Genera There are ten genera: * ''Axinella'' Schmidt, 1862 * ''Cymbastela'' Hooper & Bergquist, 1992 * ''Dragmacidon'' Hallmann, 1917 * ''Dragmaxia'' Hallmann, 1916 * ''Ophiraphidites'' Carter, 1876 * ''Pararhaphoxya'' Burton, 1934 * ''Phycopsis (sponge), Phycopsis'' Carter, 1883 * ''Pipestela'' Alvarez, Hooper & van Soest, 2008 * ''Ptilocaulis'' Carter, 1883 * ''Reniochalina'' Lend ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dragmacidon
''Dragmacidon'' is a genus of sponges in the family Axinellidae Axinellidae is a family of sponges in the order Axinellida. This family includes some photo-synthetic sponges that occur throughout the world's coral reefs. They are amongst the more common sponges seen in the aquarium trade but are usually not ..., first described in 1917 by E.F.Hallman . List of species *'' Dragmacidon agariciforme'' (Dendy, 1905) *'' Dragmacidon alvarezae'' Zea & Pulido, 2016 *'' Dragmacidon australe'' (Bergquist, 1970) *'' Dragmacidon clathriforme'' (Lendenfeld, 1888) *'' Dragmacidon coccineum'' (Keller, 1891) *'' Dragmacidon condylia'' (Hooper & Lévi, 1993) *'' Dragmacidon debitusae'' (Hooper & Lévi, 1993) *'' Dragmacidon decipiens'' (Wiedenmayer, 1989) *'' Dragmacidon durissimum'' (Dendy, 1905) *'' Dragmacidon egregium'' (Ridley, 1881) *'' Dragmacidon fibrosum'' (Ridley & Dendy, 1886) *'' Dragmacidon grayi'' (Wells, Wells & Gray., 1960) *'' Dragmacidon incrustans'' (Whitelegge, 1897) *' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Taxa Named By Arthur Dendy
In biology, a taxon (back-formation from ''taxonomy''; : taxa) is a group of one or more populations of an organism or organisms seen by taxonomists to form a unit. Although neither is required, a taxon is usually known by a particular name and given a particular ranking, especially if and when it is accepted or becomes established. It is very common, however, for taxonomists to remain at odds over what belongs to a taxon and the criteria used for inclusion, especially in the context of rank-based (" Linnaean") nomenclature (much less so under phylogenetic nomenclature). If a taxon is given a formal scientific name, its use is then governed by one of the nomenclature codes specifying which scientific name is correct for a particular grouping. Initial attempts at classifying and ordering organisms (plants and animals) were presumably set forth in prehistoric times by hunter-gatherers, as suggested by the fairly sophisticated folk taxonomies. Much later, Aristotle, and later still ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
