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Edwardsia Timida
''Edwardsia timida'', also known as the timid burrowing anemone, is a species of sea anemone in the family Edwardsiidae. Description This species of sea anemone has a maximum diameter of and maximum length of ; it is similar to ''Edwardsia claparedii'' but even more elongate, with a translucent pale orange colour. It has 16–32 tentacles arranged in 3 cycles, with 4 larger tentacles in the primary cycle. Its column is slender, without tubercles. It has cinclides (pores in the body wall for release of water and cnidocytes). Range ''Edwardsia timida'' is found in the Irish Sea and English Channel. It is one of 943 species listed by Natural England in 2014 as species of principal importance for the conservation of biodiversity in England. Habitat ''Edwardsia timida'' burrows in sand or gravel from lower shore to shallow sublittoral The littoral zone or nearshore is the part of a sea, lake, or river that is close to the shore. In coastal ecology, the littoral zone includes t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jean Louis Armand De Quatrefages De Bréau
Jean Louis Armand de Quatrefages de Bréau (10 February 1810 – 12 January 1892) was a French biologist. Life He was born at Berthézène, in the commune of Valleraugue (Gard), the son of a Protestant farmer. He studied science and then medicine at the University of Strasbourg, where he took the double degree of M.D. and D.Sc., one of his theses being a ''Théorie d'un coup de canon'' (November 1829); next year he published a book, ''Sur les arolithes'', and in 1832 a treatise on ''L'Extraversion de la vessie''. Moving to Toulouse, he practised medicine for a short time, and contributed various memoirs to the local ''Journal de Médecine'' and to the ''Annales des sciences naturelles'' (1834—36). But being unable to continue his research in the provinces, he resigned the chair of zoology to which he had been appointed, and in 1839 settled in Paris, where he found in Henri Milne-Edwards a patron and a friend. Elected professor of natural history at the Lycée Napoléon in 185 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Edwardsiidae
Edwardsiidae is a family of sea anemones. Edwardsiids have long thin bodies and live buried in sediments or in holes or crevices in rock. Genera The following genera are recognized within the family Edwardsiidae. * '' Drillactis'' Verrill, 1922 * ''Edwardsia'' Quatrefages, 1842 * '' Edwardsianthus'' England, 1987 * '' Edwardsiella'' Andres, 1883 * '' Halcampogeton'' Carlgren, 1937 * '' Isoedwardsia'' Carlgren, 1900 * '' Milne-Edwardsia'' Carlgren, 1892 * ''Nematostella ''Nematostella'' is a genus of sea anemones in the family Edwardsiidae. Of the three species in the genus, the best known is the starlet sea anemone (''N. vectensis''), which has been extensively studied as a model organism in fields such as ...'' Stephenson, 1935 * '' Paraedwardsia'' Carlgren in Nordgaard, 1905 * '' Scolanthus'' Gosse, 1853 * '' Synhalcampella'' * '' Tempuractis'' References Actiniaria Cnidarian families Taxa named by Angelo Andres {{Actiniaria-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Edwardsia Claparedii
''Edwardsia claparedii'' is a species of sea anemone in the family Family (from la, familia) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its ... Edwardsiidae. Distribution Found frequently in depths of 5–30 m on all western coasts of British Isles and Atlantic coasts of southern Europe to the Mediterranean Sea.Picton, B.E. & Morrow, C.C., 2010''Edwardsia claparedii'' (Panceri, 1869) n/nowiki> Encyclopedia of Marine Life of Britain and Ireland. Habitat Burrows in mud or muddy sand. References Edwardsia Cnidarians of the Atlantic Ocean Anthozoa of Europe Marine fauna of Europe Animals described in 1975 {{Actiniaria-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cyclic Flower
A cyclic flower is a flower type formed out of a series of whorls; sets of identical organs attached around the axis at the same point. Most flowers consist of a single whorl of sepals termed a calyx; a single whorl of petals termed a corolla; one or more whorls of stamens (together termed the androecium); and a single whorl of carpels termed the gynoecium. This is a cyclic arrangement. Some flowers contain flower parts with a spiral arrangement. Such flowers are not cyclic. However in the common case of spirally arranged sepals on an otherwise cyclic flower, the term hemicyclic may be used. The suffix -cyclic is used to denote the number of whorls contained within a flower. The most common case is the pentacyclic flower, which contains five whorls: a calyx, a corolla, two whorls of stamens, and a single whorl of carpels. Another common case is the tetracyclic flower, which contains only one whorl of stamens, and therefore only four whorls in total. Tricyclic flowers also occur, g ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tubercles
In anatomy, a tubercle (literally 'small tuber', Latin for 'lump') is any round nodule, small eminence, or warty outgrowth found on external or internal organs of a plant or an animal. In plants A tubercle is generally a wart-like projection, but it has slightly different meaning depending on which family of plants or animals it is used to refer to. In the case of certain orchids and cacti, it denotes a round nodule, small eminence, or warty outgrowth found on the lip. They are also known as podaria (singular ''podarium''). When referring to some members of the pea family, it is used to refer to the wart-like excrescences that are found on the roots. In fungi In mycology, a tubercle is used to refer to a mass of hyphae from which a mushroom is made. In animals When it is used in relation to certain dorid nudibranchs such as '' Peltodoris nobilis'', it means the nodules on the dorsum of the animal. The tubercles in nudibranchs can present themselves in different ways: ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cnidocytes
A cnidocyte (also known as a cnidoblast or nematocyte) is an explosive Cell (biology), cell containing one large secretory organelle called a cnidocyst (also known as a cnida () or nematocyst) that can deliver a sting to other organisms. The presence of this cell defines the phylum Cnidaria (corals, sea anemones, Hydra (genus), hydrae, jellyfish, etc.). Cnidae are used to capture prey and as a defense against predators. A cnidocyte fires a structure that contains a toxin within the cnidocyst; this is responsible for the stings delivered by a cnidarian. Structure and function Each cnidocyte contains an organelle called a cnida, cnidocyst, nematocyst, ptychocyst or spirocyst. This organelle consists of a bulb-shaped capsule containing a coiled hollow tubule structure attached to it. An immature cnidocyte is referred to as a cnidoblast or nematoblast. The externally oriented side of the cell has a hair-like trigger called a cnidocil, which is a mechano- and chemo-receptor. When ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Irish Sea
The Irish Sea or , gv, Y Keayn Yernagh, sco, Erse Sie, gd, Muir Èireann , Ulster-Scots: ''Airish Sea'', cy, Môr Iwerddon . is an extensive body of water that separates the islands of Ireland and Great Britain. It is linked to the Celtic Sea in the south by St George's Channel and to the Inner Seas off the West Coast of Scotland in the north by the North Channel. Anglesey, North Wales, is the largest island in the Irish Sea, followed by the Isle of Man. The term ''Manx Sea'' may occasionally be encountered ( cy, Môr Manaw, ga, Muir Meann gv, Mooir Vannin, gd, Muir Mhanainn). On its shoreline are Scotland to the north, England to the east, Wales to the southeast, Northern Ireland and the Republic of Ireland to the west. The Irish Sea is of significant economic importance to regional trade, shipping and transport, as well as fishing and power generation in the form of wind power and nuclear power plants. Annual traffic between Great Britain and Ireland amounts t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
English Channel
The English Channel, "The Sleeve"; nrf, la Maunche, "The Sleeve" (Cotentinais) or ( Jèrriais), (Guernésiais), "The Channel"; br, Mor Breizh, "Sea of Brittany"; cy, Môr Udd, "Lord's Sea"; kw, Mor Bretannek, "British Sea"; nl, Het Kanaal, "The Channel"; german: Ärmelkanal, "Sleeve Channel" ( French: ''la Manche;'' also called the British Channel or simply the Channel) is an arm of the Atlantic Ocean that separates Southern England from northern France. It links to the southern part of the North Sea by the Strait of Dover at its northeastern end. It is the busiest shipping area in the world. It is about long and varies in width from at its widest to at its narrowest in the Strait of Dover."English Channel". ''The Columbia Encyclopedia'', 2004. It is the smallest of the shallow seas around the continental shelf of Europe, covering an area of some . The Channel was a key factor in Britain becoming a naval superpower and has been utilised by Britain as a natural def ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Natural England
Natural England is a non-departmental public body in the United Kingdom sponsored by the Department for Environment, Food and Rural Affairs. It is responsible for ensuring that England's natural environment, including its land, flora and fauna, freshwater and marine environments, geology and soils, are protected and improved. It also has a responsibility to help people enjoy, understand and access the natural environment. Natural England focuses its activities and resources on four strategic outcomes: * a healthy natural environment * enjoyment of the natural environment * sustainable use of the natural environment * a secure environmental future Roles and responsibilities As a non-departmental public body (NDPB), Natural England is independent of government. However, the Secretary of State for Environment, Food & Rural Affairs has the legal power to issue guidance to Natural England on various matters, a constraint that was not placed on its predecessor NDPBs. Its powers inc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sublittoral
The littoral zone or nearshore is the part of a sea, lake, or river that is close to the shore. In coastal ecology, the littoral zone includes the intertidal zone extending from the high water mark (which is rarely inundated), to coastal areas that are permanently submerged — known as the ''foreshore'' — and the terms are often used interchangeably. However, the geographical meaning of ''littoral zone'' extends well beyond the intertidal zone to include all neritic waters within the bounds of continental shelves. Etymology The word ''littoral'' may be used both as a noun and as an adjective. It derives from the Latin noun ''litus, litoris'', meaning "shore". (The doubled ''t'' is a late-medieval innovation, and the word is sometimes seen in the more classical-looking spelling ''litoral''.) Description The term has no single definition. What is regarded as the full extent of the littoral zone, and the way the littoral zone is divided into subregions, varies in different co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Edwardsia
''Edwardsia'' is a genus of sea anemones, the type of the family Edwardsiidae. They have eight mesenteries and live in tubes in the sand. The name, in New Latin, commemorates the French zoologist Henri Milne-Edwards. The genus contains the following species: *'' Edwardsia allmani'' McIntosh, 1866 *'' Edwardsia alternobomen'' Izumi & Fujita, 2019 *'' Edwardsia andresi'' Danielssen, 1890 *'' Edwardsia annamensis'' Carlgren, 1943 *'' Edwardsia arctica'' Carlgren, 1921 *'' Edwardsia arenosa'' Klunzinger, 1877 *''Edwardsia athalyei'' England, 1990 *''Edwardsia beautempsii'' Quatrefages, 1842 *''Edwardsia californica'' (McMurrich, 1913) *''Edwardsia capensis'' Carlgren, 1938 *'' Edwardsia carlgreni'' Carlgren, 1921 *'' Edwardsia claparedii'' (Panceri, 1869) *''Edwardsia clavata'' (Rathke, 1843) *''Edwardsia collaris'' Stimpson, 1856 *''Edwardsia coriacea'' Moseley, 1877 *''Edwardsia costata'' Danielssen, 1890 *''Edwardsia danica'' Carlgren, 1921 *''Edwardsia delapiae'' Carlgren & St ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Taxa Named By Jean Louis Armand De Quatrefages De Bréau
In biology, a taxon (back-formation from ''taxonomy''; plural 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. 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 set forth in Carl Linnaeus's system in ''Systema Naturae'', 10th edition (1758), as well as an unpublished work by Bernard and Antoine Laurent de Jussieu. The idea of a unit-based system of biological classification was first made widely available in 1805 in the intro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
