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Eigenmannia Vicentespelaea
''Eigenmannia vicentespelaea'' is a species of weakly electric knifefish in the family Sternopygidae. Native to the São Domingos karst area in central Brazil, it is the only known knifefish to exclusively inhabit caves. Measuring up to long, ''E. vicentespelaea'' can be distinguished from its relatives by its translucent body and reduced or absent eyes. As some individuals retain well-developed eyes, this fish may have colonized caves only recently in evolutionary time. Taxonomy Brazilian ichthyologist Mauro Luís Triques described ''E. vicentespelaea'' in a 1996 volume of the scientific journal ''Revue Française de Aquariologie'', from two specimens caught in 1978. He chose the specific epithet ''vicentespelaea'' from the São Vicente I cave, the type locality, and ''speleum'', Latin for "cave". Based on color pattern and morphology, it is included in the '' E. virescens'' species group with ''E. virescens'', '' E. trilineata'', and a third undescribed species. Dist ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mauro Luís Triques
Mauro may refer to: Given name * Mauro (footballer, born 1932), Brazilian footballer * Mauro Silva (footballer, born 1978), Brazilian footballer * Mauro (footballer, born 1984), Portuguese footballer * Bruno Mauro (born 1973), Angolan footballer * Fra Mauro (15th century), Venetian monk and mapmaker * Mauro Barella (born 1956), Italian pole vaulter * Mauro Blanco (born 1965), Bolivian footballer * Mauro Camoranesi (born 1976), Italian football manager and former player * Mauro Díaz (born 1991), Argentine footballer * Mauro Esposito (born 1979), Italian footballer * Mauro Eustáquio (born 1993), Canadian soccer player * Mauro Giuliani (1781–1829), Italian guitarist and composer * Mauro Hamza, fencing coach * Mauro Icardi (born 1993), Argentine footballer * Mauro Pagani (born 1946), Italian musician * Mauro Pawlowski (born 1971), Belgian musician * Mauro Prosperi (born 1955), Italian police officer and pentathlete * Mauro Ramos (1930–2002), Brazilian footballer * Mauro Ranal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eigenmannia Virescens
The glass knifefish (''Eigenmannia virescens'') is a weakly electric freshwater fish found across South America. It is marketed as an aquarium fish. Description The appendix on the body has black lines running through the bottom of the sides, with the most intense line running on the anal fin. Like all members of its order, it is distinguished by its ability to produce electric fields. This is achieved by discharging an electric organ in the tail. Distribution This species is widely distributed in the rivers of South America. Their range extends from the Magdalena River basin in Colombia to the Rio de La Plata in Argentina, including Peru, Bolivia, Paraguay, Uruguay, Brazil Brazil ( pt, Brasil; ), officially the Federative Republic of Brazil (Portuguese: ), is the largest country in both South America and Latin America. At and with over 217 million people, Brazil is the world's fifth-largest country by area ..., Venezuela, Guyana, and Suriname. See also ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Porotergus
''Porotergus'' is a genus of ghost knifefishes found in the Amazon and Essequibo basins in tropical The tropics are the regions of Earth surrounding the Equator. They are defined in latitude by the Tropic of Cancer in the Northern Hemisphere at N and the Tropic of Capricorn in the Southern Hemisphere at S. The tropics are also referred to ... South America. They are found over sandy bottoms in shallow (''P. gymnotus'') or deep rivers (two remaining). They feed on small aquatic insect larvae. They have a stubby snout and are fairly small knifefish, with the largest species reaching up to in total length. Species There are currently three described species in this genus: * '' Porotergus duende'' de Santana & Crampton, 2010 * '' Porotergus gimbeli'', named for Jacob Gimbel, who financed the expedition on which it was discovered. M. M. Ellis, 1912 * '' Porotergus gymnotus'' M. M. Ellis, 1912 UCLA flag pole The base of UCLA's central flag pole, a gift to the Universit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Archolaemus Blax
''Archolaemus blax'' is a species of glass knifefish endemic to Brazil Brazil ( pt, Brasil; ), officially the Federative Republic of Brazil (Portuguese: ), is the largest country in both South America and Latin America. At and with over 217 million people, Brazil is the world's fifth-largest country by area ... where it is found in the Rio Tocantins. References * Sternopygidae Fish of South America Fish of Brazil Taxa named by Maarten Korringa Fish described in 1970 {{Gymnotiformes-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amazon Basin
The Amazon basin is the part of South America drained by the Amazon River and its tributaries. The Amazon drainage basin covers an area of about , or about 35.5 percent of the South American continent. It is located in the countries of Bolivia, Brazil, Colombia, Ecuador, Guyana, Peru, Suriname, and Venezuela. Most of the basin is covered by the Amazon rainforest, also known as Amazonia. With a area of dense tropical forest, this is the largest rainforest in the world. Geography The Amazon River begins in the Andes Mountains at the west of the basin with its main tributary the Marañón River and Apurimac River in Peru. The highest point in the watershed of the Amazon is the second biggest peak of Yerupajá at . With a length of about before it drains into the Atlantic Ocean, it is one of the two longest rivers in the world. A team of scientists has claimed that the Amazon is longer than the Nile, but debate about its exact length continues. The Amazon s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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"). It runs from south to north for about 2,450 km. It is not really a branch of the Amazon River, since its waters flow into the Atlantic Ocean alongside those of the Amazon. It flows through four Brazilian states (Goiás, Tocantins, Maranhão and Pará) and gives its name to one of Brazil's newest states, formed in 1988 from what was until then the northern portion of Goiás. The Tocantins is one of the largest clearwater rivers in South America. Course It rises in the mountainous district known as the Pireneus, west of the Federal District, but its western tributary, the Araguaia River, has its extreme southern headwaters on the slopes of the Serra dos Caiapós. The Araguaia flows 1,670 km before its confluence with th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tributary
A tributary, or affluent, is a stream or river that flows into a larger stream or main stem (or parent) river or a lake. A tributary does not flow directly into a sea or ocean. Tributaries and the main stem river drain the surrounding drainage basin of its surface water and groundwater, leading the water out into an ocean. The Irtysh is a chief tributary of the Ob river and is also the longest tributary river in the world with a length of . The Madeira River is the largest tributary river by volume in the world with an average discharge of . A confluence, where two or more bodies of water meet, usually refers to the joining of tributaries. The opposite to a tributary is a distributary, a river or stream that branches off from and flows away from the main stream. PhysicalGeography.net, Michael Pidwir ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paranã River
:''This article refers to the river in Goiás, central Brazil: for the longer river of southern Brazil, Argentina and Paraguay, see Paraná River. The difference between the two is in the diacritic on the final syllable.'' The Paranã River is located in Goiás and Tocantins states, Brazil. It divides two regions - the Northeast and north-central Goiás. It is formed by tributaries that descend the Serra Geral, the mountains that divide eastern Goiás and Bahia. One of the most important tributaries is the Crixás, which has its source near Formosa. Farther to the north the Paranã becomes the main tributary of the Tocantins River on the right bank. Today it is crossed by a long concrete bridge between the municipalities of Iaciara and Nova Roma. It forms the valley which makes up a vast region called the Vão do Paranã Microregion. See also *List of rivers of Goiás List of rivers in Goiás (Brazilian State). The list is arranged by drainage basin, with respective tribu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Limestone
Limestone ( calcium carbonate ) is a type of carbonate sedimentary rock which is the main source of the material lime. It is composed mostly of the minerals calcite and aragonite, which are different crystal forms of . Limestone forms when these minerals precipitate out of water containing dissolved calcium. This can take place through both biological and nonbiological processes, though biological processes, such as the accumulation of corals and shells in the sea, have likely been more important for the last 540 million years. Limestone often contains fossils which provide scientists with information on ancient environments and on the evolution of life. About 20% to 25% of sedimentary rock is carbonate rock, and most of this is limestone. The remaining carbonate rock is mostly dolomite, a closely related rock, which contains a high percentage of the mineral dolomite, . ''Magnesian limestone'' is an obsolete and poorly-defined term used variously for dolomite, for limes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Goiás
Goiás () is a Brazilian state located in the Center-West region. Goiás borders the Federal District and the states of (from north clockwise) Tocantins, Bahia, Minas Gerais, Mato Grosso do Sul and Mato Grosso. The state capital is Goiânia. With 7.2 million inhabitants, Goiás is the most populous state in the Center-West and the 11th most populous in the country. It has the ninth largest economy among Brazilian federative units. In Brazil's geoeconomic division, Goiás belongs to the Centro-Sul (Center-South), being the northernmost state of the southern portion of Brazil. The state has 3.3% of the Brazilian population and is responsible for 2.7% of the Brazilian GDP. The history of Goiás dates back to the beginning of the 18th century, with the arrival of pioneers from São Paulo. The Rio Vermelho region was the first to be occupied, where Vila Boa (later renamed Goiás) was founded. The development and settlement of the state took place, in a more intensified wa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brazilian State
The federative units of Brazil ( pt, unidades federativas do Brasil) are subnational entities with a certain degree of autonomy (self-government, self-regulation and self-collection) and endowed with their own government and constitution, which together form the Federative Republic of Brazil. There are 26 states (') and one federal district ('). The states are generally based on historical, conventional borders which have developed over time. The states are divided into municipalities, while the Federal District assumes the competences of both a state and a municipality. Government The government of each state of Brazil is divided into executive, legislative branch, legislative and judiciary branches. The state executive branch is headed by a state governor and includes a vice governor, both elected by the citizens of the state. The governor appoints several secretaries of state (each one in charge of a given portfolio) and the state attorney-general. The state legislative bra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Order (biology)
Order ( la, ordo) is one of the eight major hierarchical taxonomic ranks in Linnaean taxonomy. It is classified between family and class. In biological classification, the order is a taxonomic rank used in the classification of organisms and recognized by the nomenclature codes. An immediately higher rank, superorder, is sometimes added directly above order, with suborder directly beneath order. An order can also be defined as a group of related families. What does and does not belong to each order is determined by a taxonomist, as is whether a particular order should be recognized at all. Often there is no exact agreement, with different taxonomists each taking a different position. There are no hard rules that a taxonomist needs to follow in describing or recognizing an order. Some taxa are accepted almost universally, while others are recognized only rarely. The name of an order is usually written with a capital letter. For some groups of organisms, their orders may fol ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
