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Narkidae
Members of the family Narkidae are commonly known as sleeper rays. They are restricted to the temperate and tropical Indo-West Pacific from South Africa to Japan to Indonesia, and are exclusively marine and are absent from freshwater habitats. They occur from the intertidal zone to the continental shelf and the upper continental slope to a depth of 350 meters, favoring soft-bottomed habitats. Description Adult sleeper rays range in size from 8 to 46 cm in length and have flattened oval, circular, or pear-shaped pectoral fin discs. They have naked skin, without dermal denticles or thorns. The snout is moderately elongate and broadly rounded, with the rostral cartilage reduced to a slender medial rod. This distinguishes the narkids from the family Narcinidae, which have somewhat longer snouts supported by broad rostral cartilages. The mouth is straight, very narrow, and not highly protrusible, with strong labial folds and a weak groove around the periphery. The nostrils are pla ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electrolux Addisoni
The ornate sleeper-ray (''Electrolux addisoni'') is a species of electric ray in the family Narkidae, and the only member of the genus ''Electrolux''. It lives on reefs feeding on polychaete worms and small crustaceans, it has only been seen by divers to feed during the daytime. It is endemic to the coast of South Africa. It was first recorded in 1984 but was not described until 2007. It was ranked as the number one newly described species of 2007 by the International Institute for Species Exploration. In an episode of ''Extinct or Alive'', an ornate-sleeper ray is caught on footage feeding. Description ''Electrolux addisoni'' is easily distinguished from other narkids by its striking colour pattern consisting of a dark brown dorsal surface of the disc with numerous small pale yellow spots and a series of concentric stripes. It can also be distinguished by its large spiracular papillae. It and '' Heteronarce'' are the only genera in the family Narkidae that have two dorsal fins ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electrolux (fish)
The ornate sleeper-ray (''Electrolux addisoni'') is a species of electric ray in the family Narkidae, and the only member of the genus ''Electrolux''. It lives on reefs feeding on polychaete worms and small crustaceans, it has only been seen by divers to feed during the daytime. It is endemic to the coast of South Africa. It was first recorded in 1984 but was not described until 2007. It was ranked as the number one newly described species of 2007 by the International Institute for Species Exploration. In an episode of ''Extinct or Alive'', an ornate-sleeper ray is caught on footage feeding. Description ''Electrolux addisoni'' is easily distinguished from other narkids by its striking colour pattern consisting of a dark brown dorsal surface of the disc with numerous small pale yellow spots and a series of concentric stripes. It can also be distinguished by its large spiracular papillae. It and '' Heteronarce'' are the only genera in the family Narkidae that have two dorsal fins. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Onefin Electric Ray
The onefin electric ray or Cape numbfish (''Narke capensis'') is a common but little-known species of electric ray in the family Narkidae, native to South Africa and Namibia. It is a benthic fish found in shallow coastal bays over sandy or muddy bottoms. This small species reaches in length, and has a nearly circular pectoral fin disc and a short, muscular tail that supports a large caudal fin. It can be identified by its single dorsal fin, which is located over the large pelvic fins. Its dorsal coloration is yellowish to dusky brown. Like other members of its family, the onefin electric ray can defend itself with a strong electric shock produced from a pair of kidney-shaped electric organs beside its head. It feeds mainly on polychaete worms, and likely gives birth to live young. The International Union for Conservation of Nature (IUCN) presently lacks enough information to assess the conservation status of this species. It is often caught incidentally by bottom trawl fisheri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crassinarke Dormitor
The sleeper torpedo (''Crassinarke dormitor'') is a species of electric ray in the family Narkidae. It is the only species in its genus. It occurs in relatively shallow water off the coasts of southern Japan, China and Taiwan Taiwan, officially the Republic of China (ROC), is a country in East Asia, at the junction of the East and South China Seas in the northwestern Pacific Ocean, with the People's Republic of China (PRC) to the northwest, Japan to the nort .... It may be the same species as the Japanese sleeper ray (''Narke japonica'') References * sleeper torpedo Fish of Japan Marine fauna of East Asia sleeper torpedo Strongly electric fish {{Chondrichthyes-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crassinarke
The sleeper torpedo (''Crassinarke dormitor'') is a species of electric ray in the family Narkidae. It is the only species in its genus. It occurs in relatively shallow water off the coasts of southern Japan, China and Taiwan Taiwan, officially the Republic of China (ROC), is a country in East Asia, at the junction of the East and South China Seas in the northwestern Pacific Ocean, with the People's Republic of China (PRC) to the northwest, Japan to the nort .... It may be the same species as the Japanese sleeper ray (''Narke japonica'') References * sleeper torpedo Fish of Japan Marine fauna of East Asia sleeper torpedo Strongly electric fish {{Chondrichthyes-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
South Africa
South Africa, officially the Republic of South Africa (RSA), is the southernmost country in Africa. It is bounded to the south by of coastline that stretch along the South Atlantic and Indian Oceans; to the north by the neighbouring countries of Namibia, Botswana, and Zimbabwe; and to the east and northeast by Mozambique and Eswatini. It also completely enclaves the country Lesotho. It is the southernmost country on the mainland of the Old World, and the second-most populous country located entirely south of the equator, after Tanzania. South Africa is a biodiversity hotspot, with unique biomes, plant and animal life. With over 60 million people, the country is the world's 24th-most populous nation and covers an area of . South Africa has three capital cities, with the executive, judicial and legislative branches of government based in Pretoria, Bloemfontein, and Cape Town respectively. The largest city is Johannesburg. About 80% of the population are Black South Afri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Benthic
The benthic zone is the ecological region at the lowest level of a body of water such as an ocean, lake, or stream, including the sediment surface and some sub-surface layers. The name comes from ancient Greek, βένθος (bénthos), meaning "the depths." Organisms living in this zone are called benthos and include microorganisms (e.g., bacteria and fungi) as well as larger invertebrates, such as crustaceans and polychaetes. Organisms here generally live in close relationship with the substrate and many are permanently attached to the bottom. The benthic boundary layer, which includes the bottom layer of water and the uppermost layer of sediment directly influenced by the overlying water, is an integral part of the benthic zone, as it greatly influences the biological activity that takes place there. Examples of contact soil layers include sand bottoms, rocky outcrops, coral, and bay mud. Description Oceans The benthic region of the ocean begins at the shore line (intertidal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phillip C
Philip, also Phillip, is a male given name, derived from the Greek (''Philippos'', lit. "horse-loving" or "fond of horses"), from a compound of (''philos'', "dear", "loved", "loving") and (''hippos'', "horse"). Prominent Philips who popularized the name include kings of Macedonia and one of the apostles of early Christianity. ''Philip'' has many alternative spellings. One derivation often used as a surname is Phillips. It was also found during ancient Greek times with two Ps as Philippides and Philippos. It has many diminutive (or even hypocoristic) forms including Phil, Philly, Lip, Pip, Pep or Peps. There are also feminine forms such as Philippine and Philippa. Antiquity Kings of Macedon * Philip I of Macedon * Philip II of Macedon, father of Alexander the Great * Philip III of Macedon, half-brother of Alexander the Great * Philip IV of Macedon * Philip V of Macedon New Testament * Philip the Apostle * Philip the Evangelist Others * Philippus of Croton (c. 6th centur ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leonard Compagno
Leonard Joseph Victor Compagno is an international authority on shark taxonomy and the author of many scientific papers and books on the subject, best known of which is his 1984 catalogue of shark species produced for the Food and Agriculture Organization (FAO) of the United Nations. Compagno was mentioned in the credits of the 1975 film ''Jaws'' along with the National Geographic Society. Career *Ph.D, Stanford University, 1979 *Adjunct professor, San Francisco State University, 1979 to 1985 *Curator of Fishes in the Division of Life Sciences and Head of the Shark Research Centre (SRC), Iziko Museums, Cape Town *Director, Shark Research Institute(SRI) Selected bibliography *Compagno, L.J.V., 1979. ''Carcharhinoid sharks: morphology, systematics and phylogeny''. Unpublished Ph. D. Thesis, Stanford University, 932 p. Available from University Microfilms International, Ann Arbor, Michigan. *Leonard Compagno, 1984a. FAO The Food and Agriculture Organization of the United Nati ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Indo-West Pacific
The Indo-Pacific is a vast biogeographic region of Earth. In a narrow sense, sometimes known as the Indo-West Pacific or Indo-Pacific Asia, it comprises the tropical waters of the Indian Ocean, the western and central Pacific Ocean, and the seas connecting the two in the general area of Indonesia. It does not include the temperate and polar regions of the Indian and Pacific oceans, nor the Tropical Eastern Pacific, along the Pacific coast of the Americas, which is also a distinct marine realm. The term is especially useful in marine biology, ichthyology, and similar fields, since many marine habitats are continuously connected from Madagascar to Japan and Oceania, and a number of species occur over that range, but are not found in the Atlantic Ocean. The region has an exceptionally high species richness, with the world's highest species richness being found in at its heart in the Coral Triangle, and a remarkable gradient of decreasing species richness radiating outward in a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kazunori Takagi
Kazunori (written: 一慶, 一典, 一則, 一謙, 一徳, 一矩, 一紀, 和典, 和則, 和徳, 和行, 和範 or 和憲) is a masculine Japanese given name. Notable people with the name include: *, Japanese samurai *, Japanese footballer *, Japanese anime screenwriter and artist *, Japanese footballer *, Japanese sumo wrestler *, Japanese high jumper *, Japanese judoka *, Japanese politician *, Japanese actor *, Japanese baseball player *, Japanese politician *, Japanese video game designer *, Japanese actor *, Japanese mixed martial artist and judoka *, Japanese footballer {{given name Japanese masculine given names ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Food And Agriculture Organization
The Food and Agriculture Organization of the United Nations (FAO)french: link=no, Organisation des Nations unies pour l'alimentation et l'agriculture; it, Organizzazione delle Nazioni Unite per l'Alimentazione e l'Agricoltura is an international organization that leads international efforts to defeat hunger and improve nutrition and food security. Its Latin motto, ', translates to "let there be bread". It was founded on 16 October 1945. The FAO is composed of 195 members (including 194 countries and the European Union). Their headquarters is in Rome, Italy, and the FAO maintains regional and field offices around the world, operating in over 130 countries. It helps governments and development agencies coordinate their activities to improve and develop agriculture, forestry, fisheries, and land and water resources. It also conducts research, provides technical assistance to projects, operates educational and training programs, and collects data on agricultural output, produ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
