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Potamotrygon Leopoldi
The Xingu River ray, white-blotched river stingray, or polka-dot stingray (''Potamotrygon leopoldi'') is a species of freshwater fish in the family Potamotrygonidae. It is endemic to the Xingu River basin in Brazil and as such prefers clear waters with rocky bottoms. It is sometimes kept in aquaria, like its more common relative the Motoro. Etymology The fish is named in honor of King Leopold III (1901–1983) of Belgium, who sponsored many scientific studies at the Institut Royal des Sciences Naturelles de Belgique. Description ''Potamotrygon leopoldi'' reaches up to in disc width, in total length and in weight. Females grow larger than males. It is closely related to the similar '' P. henlei'' from the Tocantins River The Tocantins River ( pt, Rio Tocantins, link=no , , Parkatêjê: ''Pyti'' ɨˈti is a river in Brazil, the central fluvial artery of the country. In the Tupi language, its name means " toucan's beak" (''Tukã'' for "toucan" and ''Ti'' for "beak ... ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mariano N
Mariano is a masculine name from the Romance languages, corresponding to the feminine Mariana. It is an Italian, Spanish and Portuguese variant of the Roman Marianus which derived from Marius, and Marius derived from the Roman god Mars (see also Ares) or from the Latin ''maris'' "male". Mariano and Marian are sometimes seen as a conjunction of the two female names Mary and Ann. This name is an homage to The Virgin Mary, Mother of Jesus. Mariano, as a surname, is of Italian, Spanish and Portuguese origin from the personal name ''Mariano'', from the Latin family name ''Marianus'' (a derivative of the ancient personal name ''Marius'', of Etruscan origin). In the early Christian era it came to be taken as an adjective derived from ''Maria'', and was associated with the cult of the Virgin Mary. It was borne by various early saints, including a 3rd-century martyr in Numibia and a 5th-century hermit of Berry, France. It is also a Sephardic Jewish surname derived from the term Merano ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bigtooth River Stingray
The bigtooth river stingray or Tocantins River ray (''Potamotrygon henlei'') is a species of freshwater fish in the family Potamotrygonidae. It is endemic to the lower Tocantins basin and Araguaia basin in Brazil,Carvalho, M.R.d. (2016): Potamotrygon rex, a new species of Neotropical freshwater stingray (Chondrichthyes: Potamotrygonidae) from the middle and upper rio Tocantins, Brazil, closely allied to Potamotrygon henlei (Castelnau, 1855). Zootaxa, 4150 (5): 537–565. and prefers muddy bottoms. It is sometimes kept in aquaria. This stingray is generally common and its population increased after the Tucuruí Dam was completed, unlike many other species in its range. Appearance and relatives ''P. henlei'' reaches up to in disc width and in total length. It is replaced by the closely related '' P. rex'' in the mid and upper Tocantins basin, but that species has concentrically clustered yellow-orange spots. Two other close relatives where the spots are yellowish-white (as in ' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fish Described In 1970
Fish are aquatic, craniate, gill-bearing animals that lack limbs with digits. Included in this definition are the living hagfish, lampreys, and cartilaginous and bony fish as well as various extinct related groups. Approximately 95% of living fish species are ray-finned fish, belonging to the class Actinopterygii, with around 99% of those being teleosts. The earliest organisms that can be classified as fish were soft-bodied chordates that first appeared during the Cambrian period. Although they lacked a true spine, they possessed notochords which allowed them to be more agile than their invertebrate counterparts. Fish would continue to evolve through the Paleozoic era, diversifying into a wide variety of forms. Many fish of the Paleozoic developed external armor that protected them from predators. The first fish with jaws appeared in the Silurian period, after which many (such as sharks) became formidable marine predators rather than just the prey of arthropods. Mos ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Taxa Named By Hugo P
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] |
Taxa Named By Mariano N
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 i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Endemic Fauna Of Brazil
Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found elsewhere. For example, the Cape sugarbird is found exclusively in southwestern South Africa and is therefore said to be ''endemic'' to that particular part of the world. An endemic species can be also be referred to as an ''endemism'' or in scientific literature as an ''endemite''. For example '' Cytisus aeolicus'' is an endemite of the Italian flora. '' Adzharia renschi'' was once believed to be an endemite of the Caucasus, but it was later discovered to be a non-indigenous species from South America belonging to a different genus. The extreme opposite of an endemic species is one with a cosmopolitan distribution, having a global or widespread range. A rare alternative term for a species that is endemic is "precinctive", which applies to s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Freshwater Fish Of Brazil
Fresh water or freshwater is any naturally occurring liquid or frozen water containing low concentrations of dissolved salts and other total dissolved solids. Although the term specifically excludes seawater and brackish water, it does include non- salty mineral-rich waters such as chalybeate springs. Fresh water may encompass frozen and meltwater in ice sheets, ice caps, glaciers, snowfields and icebergs, natural precipitations such as rainfall, snowfall, hail/ sleet and graupel, and surface runoffs that form inland bodies of water such as wetlands, ponds, lakes, rivers, streams, as well as groundwater contained in aquifers, subterranean rivers and lakes. Fresh water is the water resource that is of the most and immediate use to humans. Water is critical to the survival of all living organisms. Many organisms can thrive on salt water, but the great majority of higher plants and most insects, amphibians, reptiles, mammals and birds need fresh water to survive. Fresh water is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Potamotrygon
''Potamotrygon'' is a genus of freshwater stingrays in the family Potamotrygonidae native to the rivers of South America, and sometimes seen in the aquarium trade. Like other stingrays, the fishes of this genus have venomous barbs at the base of their tails, and their stings are dangerous to humans. It is said that the natives of South America fear the stingray more than they do fear the piranha. ''Potamotrygon'' vary considerably in color, pattern and size, with the maximum disc width ranging from in ''P. wallacei'' to in ''P. brachyura''. In the aquarium Though freshwater stingray of other genera do appear in the trade, most are from ''Potamotrygon''. They are best kept with a deep, sandy substrate, in which they bury themselves, often with only the eyes visible. They are not territorial with other animals and can be kept in groups, provided a large enough aquarium is provided. They are carnivorous bottom feeders and require strong filtration as they are rather sensitive t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ministry Of The Environment (Brazil)
The Ministry of Environment ( pt, Ministério do Meio Ambiente, links=no, abbreviated MMA) is a cabinet-level federal ministry in Brazil. See also * Brazilian Institute of Environment and Renewable Natural Resources (IBAMA) * Environment of Brazil * Environmental governance in Brazil * List of environmental ministries References External links Official site Brazil Environment Environment most often refers to: __NOTOC__ * Natural environment, all living and non-living things occurring naturally * Biophysical environment, the physical and biological factors along with their chemical interactions that affect an organism or ... Environmental agencies in Brazil {{environmental-agency-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brazilian Institute Of Environment And Renewable Natural Resources
Brazilian Institute of the Environment and Renewable Natural Resources ( pt, Instituto Brasileiro do Meio Ambiente e dos Recursos Naturais Renováveis, IBAMA) is the Brazilian Ministry of the Environment's administrative arm. IBAMA supports anti-deforestation of the Amazon, and implements laws against deforestation where the government ceases to implement. IBAMA works to keep the forest from loggers, farming, agricultural farm grazing and anything that would threaten the Amazon. Spix's macaw Among IBAMA's diverse environmental and natural resources activities, it manages The Working Group for the Recovery of the Spix's macaw and the associated ''Ararinha Azul'' project for conserving one of the rarest birds in the world. However the last Spix's macaw living in the wilderness disappeared in 2000 and the species became extinct in the wild. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tapajós River
The Tapajós ( pt, Rio Tapajós ) is a river in Brazil. It runs through the Amazon Rainforest and is a major tributary of the Amazon River. When combined with the Juruena River, the Tapajós is approximately long. It is one of the largest clearwater rivers, accounting for about 6% of the water in the Amazon basin. Course For most of its length the Tapajós runs through Pará State, but the upper (southern) part forms the border between Pará and Amazonas State. The source is at the Juruena–Teles Pires river junction. The Tapajós River basin accounts for 6% of the water in the Amazon Basin, making it the fifth largest in the system.Hales, J., and P. Petry (2013). Tapajos – Juruena'. Freshwater Ecoregions of the World. Retrieved 16 February 2013. From the lower Arinos River (a tributary of Juruena) to the Maranhão Grande falls are a more or less continuous series of formidable cataracts and rapids; but from the Maranhão Grande to the mouth of Tapajós, about , the r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Potamotrygon Albimaculata
''Potamotrygon'' is a genus of freshwater stingrays in the family Potamotrygonidae native to the rivers of South America, and sometimes seen in the aquarium trade. Like other stingrays, the fishes of this genus have venomous barbs at the base of their tails, and their stings are dangerous to humans. It is said that the natives of South America fear the stingray more than they do fear the piranha. ''Potamotrygon'' vary considerably in color, pattern and size, with the maximum disc width ranging from in ''P. wallacei'' to in ''P. brachyura''. In the aquarium Though freshwater stingray of other genera do appear in the trade, most are from ''Potamotrygon''. They are best kept with a deep, sandy substrate, in which they bury themselves, often with only the eyes visible. They are not territorial with other animals and can be kept in groups, provided a large enough aquarium is provided. They are carnivorous bottom feeders and require strong filtration as they are rather sensitive t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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