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Tometes
''Tometes'' is a genus of fish in the family Serrasalmidae found in fast-flowing rivers in northern South America. Adults of all seven species in this genus are phytophagous, feeding primarily on aquatic plants in the family Podostemaceae. The genus name ''Tometes'' was coined in 1850 by Valenciennes in reference to the incisiform teeth. When the type species of the genus, ''T. trilobatus'', was described in 1850, it was placed in synonym with ''Myleus setiger'', the type species of the genus '' Myleus'', which is why ''Tometes'' and ''Myleus'' were considered to be the same genus for a long time. It was just later that the two genera were revalitated and other specimen could be categorized in the genus ''Tometes''. Taxonomy Even today the taxonomic classification of the Serrasalmidae is not an easy task. Many names are placed in synonymy due to a lack of information and insufficient data bases. It was not long ago when it was discovered that ''Tometes'' and '' Myleus'' are tw ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Serrasalmidae
The Serrasalmidae (serrasalmids) are a family of characiform fishes native to freshwater habitats of South America. They include more than 90 species. The name means "serrated salmon family", which refers to the serrated keel running along the belly of these fish. Fish classified as Serrasalmidae are also known by these common names: pacu, piranha, and silver dollar. These common names generally designate differing dental characteristics and feeding habits. Description Serrasalmids are medium- to large-sized characiform bony fishes that reach about long, generally characterized by a deep, laterally compressed body with a series of midventral abdominal spines or scutes, and a long dorsal fin (over 16 rays). Most species also possess an anteriorly directed spine just before the dorsal fin extending from a supraneural bone; exceptions include members of the genera '' Colossoma'', '' Piaractus'', and '' Mylossoma''. Most serrasalmids have about 60 chromosomes, ranging fro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pacu
Pacu () is a common name used to refer to several species of omnivorous South American freshwater Serrasalmidae, serrasalmid fish related to piranhas. Pacu and piranha do not have similar teeth, the main difference being jaw alignment; piranha have pointed, razor-sharp teeth in a pronounced underbite, whereas pacu have squarer, straighter teeth and a less severe underbite, or a slight malocclusion, overbite. Pacu, unlike piranha, mainly feed on plant material and not flesh or Fish scale, scales. Additionally, the pacu can reach much larger sizes than piranha, at up to in total length and in weight. Name The common name ''pacu'' is generally applied to fish classified under the below listed Genus, genera. Among these, several genera contain species where commonly used English names include the word ''pacu'', as listed. *Subfamily Colossomatinae **''Colossoma'' – black pacu, black-finned pacu, giant pacu **''Mylossoma '' **''Piaractus'' – red-bellied pacu, small-scaled pacu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rheophile
A rheophile is an animal that prefers to live in fast-moving water. Examples of rheophilic animals Insects *Many aquatic insects living in riffles require current to survive. *'' Epeorus sylvicola'', a rheophilic mayfly species ( Ephemeroptera) *Some African (''Elattoneura'') and Asian threadtail (''Prodasineura'') species Birds *Dippers (''Cinclus'') * Grey wagtail (''Motacilla cinerea'') and mountain wagtail (''Motacilla clara'') *A few swifts often nest behind waterfalls, including American black swift (''Cypseloides niger''), giant swiftlet (''Hydrochous gigas''), great dusky swift (''Cypseloides senex'') and white-collared swift (''Streptoprocne zonaris'') *Some waterfowl, including African black duck (''Anas sparsa''), blue duck (''Hymenolaimus malacorhynchos''), Brazilian merganser (''Mergus octosetaceus''), bronze-winged duck (''Speculanas specularis''), harlequin duck (''Histrionicus histrionicus''), Salvadori's teal (''Salvadorina waigiuensis'') and torren ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tomettes
Tomettes are a type of terracotta tile that is commonly used as flooring, particularly in southern regions of France including Provence, Dauphiné and the island of Corsica, but also elsewhere including Paris. They are typically hexagonal (or sometimes octagonal) in shape, which allows them to tessellate into a uniform surface while minimizing the need for a Grout, seal substance. History Terracotta tiles were historically valued for their ability to retain heat from a hearth, and for keeping rooms cool in the summer. The tomette was developed in response to an economic crisis in 1829 which saw a fall in purchasing power as a result of industrialisation. Their shape made it possible to maximize the use of clay by minimizing losses when cutting the tiles, and reduces the amount of sealer material required between them. Production was centred in Apt, Vaucluse, Apt and Salernes, where the iron, ferruginous clay soil was ideal for the production of the tiles. By the 1850s production h ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Podostemaceae
Podostemaceae (riverweed family), a family in the order Malpighiales, comprise about 50 genera and species of more or less thalloid aquatic herbs. Distribution and habitat They are found mostly in tropical and subtropical areas worldwide. Many species are found in a very small geographic area, often even just a single river or waterfall. Because of their small range, many species are seriously threatened, especially from habitat loss (for example, due to dams flooding their habitat). Riverweeds adhere to hard surfaces (generally rock) in rapids and waterfalls of rivers. They are submerged when water levels are high, but during the dry season they live a terrestrial existence, flowering at this time. Their root anatomy is specialized for the purpose of clinging to rocks, and in fact details of the root structure are one of the ways of classifying riverweeds. Ecology In many rivers, Podostemaceae are an important food source for a wide range of animals. For example, the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Commewijne River
Commewijne River (Sranan Tongo: ''Kawina-liba'') is a river in northern Suriname. It originates in the jungle 100 or more miles southeast of Paraibo and meanders northwest until it receives the meandering Cottica River from the east and then runs west until it joins the north-flowing Suriname River estuary at Nieuw Amsterdam about 10 miles below Paraíba. Here, after some the combined rivers enter the Atlantic Ocean. It has a river basin of . The Commewijne was important historically for navigation: ocean-going ships navigated the river huge barges with bauxite were transported from Moengo in the east to the confluence with the Surinam river and from there traveled southward via Paramaribo to the Paranam refinery and to Trinidad and the USA. Floats with tropical hardwood were also brought to Paramaribo, the capital of Suriname. Nowadays, the Moengo bauxite is depleted and the hardwood is mostly transported by trucks. The ocean-going ships were trading the river as late as 1 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mana River (Guyane)
Mana may refer to: Religion and mythology * Mana (Oceanian cultures), the spiritual life force energy or healing power that permeates the universe in Melanesian and Polynesian mythology * Mana (food), archaic name for manna, an edible substance mentioned in the Bible and Quran * Mana (Mandaeism), a term roughly equivalent to the philosophical concept of 'nous' * Māna, a Buddhist term for 'pride', 'arrogance', or 'conceit' * Mana (Finnish mythology), or Tuonela, the realm of the dead or the underworld Arts, entertainment and media Music * Maná, a Mexican rock group ** ''Maná'' (album), 1987 * ''Mana'' (Nemesea album), 2004 * Mana (Finnish musician), drummer of the rock band Lordi * Mana (Japanese musician) * Mana, Japanese musician and vocalist of the band Chai * Mana Mana, a Finnish rock group * Mana Music, a music supervision company based in Australia and New Zealand * ''Mana'', an album by Idle Hands (band), 2019 Other uses in arts, entertainment and media * Mana ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trombetas River
The Trombetas is a large river on the northern side of the Amazon River. Course The Trombetas is long, and is navigable by 500 ton vessels for a stretch of . The Trombetas river gives birth to very many rivers, including the Anamu river. It is formed by the junction of the Poana and Anuma rivers on the border between Brazil and Guyana. Where it meets the Paraná de Sapucuá it takes the name of lower Trombetas, and reaches up to in width, with the stream divided by several long and narrow islands. It runs through the municipalities of Oriximiná, Terra Santa, Óbidos and Faro. The river basin has an area of about , with an intricate pattern of tributaries including the Poana, Anamu, Turuna, Inhabu, Mapuera and Paru de Oeste. In the Saracá-Taquera National Forest the main streams in the Trombetas basin are the Papagaio, Água Fria, Moura, Jamari, Ajará, Terra Preta and Saracá. Its confluence with the Amazon is just west of the town of Óbidos, Pará in Brazil. Its so ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Guiana Shield
The Guiana Shield (; ; ; ) is one of the three cratons of the South American Plate. It is a 1.7 billion-year-old Precambrian geological formation in northeast South America that forms a portion of the northern coast. The higher elevations on the shield are called the Guiana Highlands, which is where the table-like mountains called tepuis are found. The Guiana Highlands are also the source of some of the world's most well-known waterfalls such as Angel Falls, Kaieteur Falls and Cuquenan Falls. The Guiana Shield underlies Guyana (previously ''British Guiana''), Suriname (previously ''Dutch Guiana''), and French Guiana (or ''Guyane''), much of southern Venezuela, as well as parts of Colombia and Brazil. The rocks of the Guiana Shield consist of metasediments and metavolcanics ( greenstones) overlain by sub-horizontal layers of sandstones, quartzites, shales and conglomerates intruded by sills of younger mafic intrusives such as gabbros. Geology The oldest rocks in the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Maroni (river)
The Maroni () or Marowijne (; ) is a river in South America that forms the border between French Guiana and Suriname. Course The Maroni runs through the Guianan moist forests ecoregion. It originates in the Tumuk Humak Mountains and forms the (disputed) border between France (region of French Guiana) and Suriname. In its upper reaches, it is also known as the Lawa, and close to its source it is known as the Litani. The total length of Litani, Lawa and Maroni is . There are two nature preserves located in the estuary region on the Surinamese side of the river, near the village of Galibi. They provide protection for the birds and the leatherback sea turtles that hatch there. Territorial dispute In 1860, the question was posed from the French side, which of the two tributary rivers was the headwater, and thus the border. A joint French-Dutch commission was appointed to review the issue. The Dutch side of the commission consisted of J.H. Baron van Heerdt tot Eversberg, J ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Araguaia River
The Araguaia River ( , Karajá language, Karajá: ♂ ''Berohokỹ'' [beɾohoˈkə̃], ♀ ''Bèrakuhukỹ'' [bɛɾakuhuˈkə̃]) is one of the major rivers of Brazil, and a tributary of the Tocantins River. Geography The Araguaia River comes from Goiás-Mato Grosso south borders. From there it flows northeast to a junction with the Tocantins River, Tocantins near the town of São João. Along its course, the river forms the border between the states of Goiás, Mato Grosso, Tocantins and Pará. Roughly in the middle of its course the Araguaia splits into a fork (with the western stream retaining the name Araguaia and the eastern one being called the Javaés River). These later reunite, forming the Ilha do Bananal, the world's largest river island. The vein of the Javaés forms a broad inland where it pours back into the main Araguaia, a 100,000 hectare expanse of igapós or flooded forest, blackwater river channels, and oxbow lakes called Cantão, protected by the Cantão State Par ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tocantins River
The Tocantins River ( , Parkatêjê dialect, Parkatêjê: ''Pyti'' [pɨˈti]) 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 . While sometimes included in definitions of the Amazon basin, the Tocantins is not a branch of the Amazon River, since its waters flow into the Atlantic Ocean via an eastern channel of the Amazon Delta, alongside those of the Amazon proper. 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 river (river type), clearwater rivers in South America. Course It rises in the mountainous district known as the Pirineus State Park, Pireneus, west of the Federal District, but its western tributary, the Araguaia Ri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
