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Planar Hydroid
The planar hydroid (''Sertularella arbuscula'') is a branching colonial hydroid in the family Sertulariidae Sertulariidae is a family of hydrozoans. Genera According to the World Register of Marine Species, the following genera belong to this family: *''Abietinaria'' Kirchenpauer, 1884 *''Amphisbetia'' L. Agassiz, 1862 *'' Caledoniana'' Galea, 2015 .... Description Planar hydroids are bright yellow and branched in one plane with a zig-zag appearance to the stems. The colonies usually grow up to 30 cm in height.Branch, G.M., Branch, M.L, Griffiths, C.L. and Beckley, L.E. 2010. ''Two Oceans: a guide to the marine life of southern Africa'' Distribution This colonial animal is found off the southern African coast from Saldanha Bay to central Mozambique, as well as off Vema Seamount, through the Indian Ocean and off Australia, down to 219m under water. Ecology Planar hydroids live on vertical subtidal rock faces perpendicular to normal water flow. They feed on plankt ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jean Vincent Félix Lamouroux
Jean Vincent Félix Lamouroux (3 May 1779 – 26 March 1825) was a French biologist and naturalist, noted for his seminal work with algae. Biography Lamouroux was born in Agen in the Aquitaine of southwestern France, the son of Claude Lamouroux, an intellectual who made his livelihood in manufacturing, but who was also a musician, a one-term mayor of Agen, and a co-founder of the Academic Society of Agen. Jean Vincent Lamouroux studied botany at the Boudon de Saint-Amans school in Agen. Lamouroux was particularly interested in marine organisms such as algae and hydrozoans. In 1805 he published a dissertation on several species of ''Fucus'' before settling in Paris in 1807, after his father went into bankruptcy. In 1807, Lamouroux was appointed to the French Academy of Sciences and in 1808 he became assistant professor of natural history at the University of Caen, rising to full professorship by 1811. He joined the Linnean Society of Calvados and contributed to its publications, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hydrozoa
Hydrozoa (hydrozoans; ) are a taxonomic class of individually very small, predatory animals, some solitary and some colonial, most of which inhabit saline water. The colonies of the colonial species can be large, and in some cases the specialized individual animals cannot survive outside the colony. A few genera within this class live in freshwater habitats. Hydrozoans are related to jellyfish and corals and belong to the phylum Cnidaria. Some examples of hydrozoans are the freshwater jelly (''Craspedacusta sowerbyi''), freshwater polyps ('' Hydra''), ''Obelia'', Portuguese man o' war (''Physalia physalis''), chondrophores (Porpitidae), "air fern" (''Sertularia argentea''), and pink-hearted hydroids (''Tubularia''). Anatomy Most hydrozoan species include both a polyp (zoology), polypoid and a medusa (biology), medusoid stage in their lifecycles, although a number of them have only one or the other. For example, ''Hydra'' has no medusoid stage, while ''Liriope tetraphylla, Lir ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Family (biology)
Family ( la, familia, plural ') is one of the eight major hierarchical taxonomic ranks in Linnaean taxonomy. It is classified between order and genus. A family may be divided into subfamilies, which are intermediate ranks between the ranks of family and genus. The official family names are Latin in origin; however, popular names are often used: for example, walnut trees and hickory trees belong to the family Juglandaceae, but that family is commonly referred to as the "walnut family". What belongs to a family—or if a described family should be recognized at all—are proposed and determined by practicing taxonomists. There are no hard rules for describing or recognizing a family, but in plants, they can be characterized on the basis of both vegetative and reproductive features of plant species. Taxonomists often take different positions about descriptions, and there may be no broad consensus across the scientific community for some time. The publishing of new data and opini ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sertulariidae
Sertulariidae is a family of hydrozoans. Genera According to the World Register of Marine Species, the following genera belong to this family: *'' Abietinaria'' Kirchenpauer, 1884 *'' Amphisbetia'' L. Agassiz, 1862 *'' Caledoniana'' Galea, 2015 *'' Caminothujaria'' von Campenhausen, 1896 *'' Crateritheca'' Stechow, 1921 *'' Dictyocladium'' Allman, 1888 *'' Diphasia'' Agassiz, 1862 *'' Dynamena'' Lamouroux, 1812 *'' Fraseroscyphus'' Boero & Bouillon, 1993 *'' Geminella'' Billiard, 1925 *'' Gigantotheca'' Vervoort & Watson, 2003 *'' Gonaxia'' Vervoort, 1993 *'' Hydrallmania'' Hincks, 1868 *'' Hypopyxis'' Allman, 1888 *'' Idiellana'' Cotton & Godfrey, 1942 *'' Mixoscyphus'' Peña Cantero & Vervoort, 2005 *'' Papilionella'' Antsulevich & Vervoort, 1993 *'' Polysertularella'' Antsulevich, 2011 *''Salacia In ancient Roman mythology, Salacia ( , ) was the female divinity of the sea, worshipped as the goddess of salt water who presided over the depths of the ocean. Neptune was her c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Planar Hydroids At The Wreck Of SAS Pietermaritzburg P7260795
Planar is an adjective meaning "relating to a plane (geometry)". Planar may also refer to: Science and technology * Planar (computer graphics), computer graphics pixel information from several bitplanes * Planar (transmission line technologies), transmission lines with flat conductors * Planar, the structure resulting from the planar process used in the manufacture of semiconductor devices, such as planar transistors * Planar graph, graph that can be drawn in the plane so that no edges cross * Planar mechanism, a system of parts whose motion is constrained to a two-dimensional plane * Planar Systems, an Oregon-headquartered manufacturer of digital displays * Zeiss Planar, photographic lens designed by Paul Rudolph at Carl Zeiss in 1896 See also * List of planar symmetry groups * Planarity, a computer puzzle game * Plane (other) * Planer (other) The term planer may refer to several types of carpentry, carpentry tools, woodworking machines or metalworking ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vema Seamount
Vema Seamount is a seamount in the South Atlantic Ocean. Discovered in 1959 by a ship with the same name, it lies from Tristan da Cunha and northwest of Cape Town. The seamount has a flat top at a mean depth of which was eroded into the seamount at a time when sea levels were lower; the shallowest point lies at depth. The seamount was formed between 15-11 million years ago, possibly by a hotspot. The seamount rises high enough that its summit is at shallow depth, allowing sunlight to reach it and thus permitting the growth of kelp and algae. A number of sea animals and fish are encountered on the seamount; active fisheries existed at Vema Seamount and caused the disappearance of some animal species. History Vema Seamount was discovered by the research ship RV Vema of the Lamont–Doherty Earth Observatory in 1959. Vema is one of the first seamounts to be the subject of scientific study, and the first seamount investigated by scuba divers without special equipment. Vema li ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sertularellidae
Sertulariidae is a family of hydrozoans. Genera According to the World Register of Marine Species, the following genera Genus ( plural genera ) is a taxonomic rank used in the biological classification of living and fossil organisms as well as viruses. In the hierarchy of biological classification, genus comes above species and below family. In binomial nomenclat ... belong to this family: * '' Calamphora'' Allman, 1888 * '' Sertularella'' Gray, 1848 References Sertularioidea Cnidarian families {{leptothecata-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
