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Homodiaetus
''Homodiaetus'' is a genus of pencil catfishes native to South America. Species There are currently four recognized species in this genus: * '' Homodiaetus anisitsi'' Eigenmann & Ward, 1907 * '' Homodiaetus banguela'' Koch, 2002 * '' Homodiaetus graciosa'' Koch, 2002 * '' Homodiaetus passarellii'' ( Miranda-Ribeiro, 1944) Distribution The distribution of ''Homodiaetus'' is restricted you southeastern South America, from Uruguay to Paraguay Rivers in the west to the coastal drainages of the Rio de Janeiro State, Brazil. ''H. anisitsi'' originates from the Paraná-Paraguay River basin. ''H. banguela'' inhabits the São João River and ''H. passarellii'' is known from coastal basins in the State of Rio de Janeiro. ''H. graciosa'' is distributed in coastal basins of southeastern Brazil in states of Paraná and São Paulo. Description ''Homodiaetus'' is currently distinguished from other genera of Stegophilinae by the combination of the origin of the pelvic fin midlength betwe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Homodiaetus Graciosa
''Homodiaetus'' is a genus of pencil catfishes native to South America. Species There are currently four recognized species in this genus: * ''Homodiaetus anisitsi'' Eigenmann & Ward, 1907 * '' Homodiaetus banguela'' Koch, 2002 * '' Homodiaetus graciosa'' Koch, 2002 * ''Homodiaetus passarellii'' ( Miranda-Ribeiro, 1944) Distribution The distribution of ''Homodiaetus'' is restricted you southeastern South America, from Uruguay to Paraguay Rivers in the west to the coastal drainages of the Rio de Janeiro State, Brazil. ''H. anisitsi'' originates from the Paraná-Paraguay River basin. ''H. banguela'' inhabits the São João River and ''H. passarellii'' is known from coastal basins in the State of Rio de Janeiro. ''H. graciosa'' is distributed in coastal basins of southeastern Brazil in states of Paraná and São Paulo. Description ''Homodiaetus'' is currently distinguished from other genera of Stegophilinae by the combination of the origin of the pelvic fin midlength between t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stegophilinae
The Stegophilinae are a subfamily of catfishes (order Siluriformes) of the family Trichomycteridae. It includes 12 genera: '' Acanthopoma'', '' Apomatoceros'', '' Haemomaster'', '' Henonemus'', '' Homodiaetus'', '' Megalocentor'', ''Ochmacanthus'', '' Parastegophilus'', '' Pareiodon'', '' Pseudostegophilus'', '' Schultzichthys'', and '' Stegophilus''. A monophyletic group within the Stegophilinae is supported by two characteristics of the lateral line, including ''Acanthopoma'', ''Henonemus'', ''Megalocentor'', ''Pareiodon'', ''Parastegophilus'', and ''Pseudostegophilus''. ''Acanthopoma'' and ''Henonemus'' have a sister group relationship. The Stegophilinae are widely distributed in the main South American river basins, including the Amazon, Orinoco, São Francisco, Paraná-Paraguay, and those of southern Brazil. Eight of the genera are distributed in Venezuela. Stegophilines are sometimes considered candirú, so are considered parasites or semiparasites, because of their pecu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trichomycteridae
Trichomycteridae is a family of catfishes commonly known as pencil catfishes or parasitic catfishes. This family includes the candiru fish (''Vandellia cirrhosa''), feared by some people for its alleged habit of entering into the urethra of humans. They are one of the few parasitic chordates. Another species is the life monsefuano (''Trichomycterus punctulatus'') which was important to the Moche culture and still an important part of Peruvian cuisine.FondazioneslowfoodLife monsefuano.Retrieved 28 April 2017. This family is prohibited from being imported into various parts of the United States. Taxonomy The Trichomycteridae comprise about 42 genera and 286 species described. It is the second-most diverse family of the superfamily Loricarioidea. Numerous species still remain undescribed. The monophyly of Trichomycteridae is well-supported. The family is divided into eight subfamilies. The only subfamily that is not monophyletic is the largest one, Trichomycterinae. A large cl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lagoon
A lagoon is a shallow body of water separated from a larger body of water by a narrow landform, such as reefs, barrier islands, barrier peninsulas, or isthmuses. Lagoons are commonly divided into '' coastal lagoons'' (or ''barrier lagoons'') and '' atoll lagoons''. They have also been identified as occurring on mixed-sand and gravel coastlines. There is an overlap between bodies of water classified as coastal lagoons and bodies of water classified as estuaries. Lagoons are common coastal features around many parts of the world. Definition and terminology Lagoons are shallow, often elongated bodies of water separated from a larger body of water by a shallow or exposed shoal, coral reef, or similar feature. Some authorities include fresh water bodies in the definition of "lagoon", while others explicitly restrict "lagoon" to bodies of water with some degree of salinity. The distinction between "lagoon" and "estuary" also varies between authorities. Richard A. Davis Jr. rest ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dentary
In anatomy, the mandible, lower jaw or jawbone is the largest, strongest and lowest bone in the human facial skeleton. It forms the lower jaw and holds the lower teeth in place. The mandible sits beneath the maxilla. It is the only movable bone of the skull (discounting the ossicles of the middle ear). It is connected to the temporal bones by the temporomandibular joints. The bone is formed in the fetus from a fusion of the left and right mandibular prominences, and the point where these sides join, the mandibular symphysis, is still visible as a faint ridge in the midline. Like other symphyses in the body, this is a midline articulation where the bones are joined by fibrocartilage, but this articulation fuses together in early childhood.Illustrated Anatomy of the Head and Neck, Fehrenbach and Herring, Elsevier, 2012, p. 59 The word "mandible" derives from the Latin word ''mandibula'', "jawbone" (literally "one used for chewing"), from '' mandere'' "to chew" and ''-bula'' ( ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lepidophagy
Lepidophagy is a specialised feeding behaviour in fish that involves eating the scales of other fish. Lepidophagy is widespread, having evolved independently in at least five freshwater families and seven marine families. A related feeding behavior among fish is pterygophagy: feeding on the fins of other fish. Species Lepidophagy, or scale-eating, has been reported in a range of fish, including: '' Chanda nama'' (family Ambassidae), '' Plagiotremus'' (family Blenniidae), '' Terapon jarbua'' (family Terapontidae), a few '' Ariopsis'' and '' Neoarius'' species (family Ariidae), Pachypterus khavalchor (family Pachypteridae), Macrorhamphoides uradoi (family Triacanthodidae), several pencil catfish (family Trichomycteridae), some piranha, ''Exodon paradoxus'', '' Probolodus'', '' Roeboides'' and '' Roeboexodon'' species (order Characiformes), '' Cyprinodon desquamator'' (family Cyprinodontidae), along with both '' Perissodus'' species, all four '' Plecodus'' species, '' Xenoc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Convex
Convex or convexity may refer to: Science and technology * Convex lens, in optics Mathematics * Convex set, containing the whole line segment that joins points ** Convex polygon, a polygon which encloses a convex set of points ** Convex polytope, a polytope with a convex set of points ** Convex metric space, a generalization of the convexity notion in abstract metric spaces * Convex function, when the line segment between any two points on the graph of the function lies above or on the graph * Convex conjugate, of a function * Convexity (algebraic geometry), a restrictive technical condition for algebraic varieties Algebraic varieties are the central objects of study in algebraic geometry, a sub-field of mathematics. Classically, an algebraic variety is defined as the set of solutions of a system of polynomial equations over the real or complex number ... originally introduced to analyze Kontsevich moduli spaces Economics and finance * Convexity (finance), second ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Transparency (optics)
In the field of optics, transparency (also called pellucidity or diaphaneity) is the physical property of allowing light to pass through the material without appreciable scattering of light. On a macroscopic scale (one in which the dimensions are much larger than the wavelengths of the photons in question), the photons can be said to follow Snell's law. Translucency (also called translucence or translucidity) allows light to pass through, but does not necessarily (again, on the macroscopic scale) follow Snell's law; the photons can be scattered at either of the two interfaces, or internally, where there is a change in index of refraction. In other words, a translucent material is made up of components with different indices of refraction. A transparent material is made up of components with a uniform index of refraction. Transparent materials appear clear, with the overall appearance of one color, or any combination leading up to a brilliant spectrum of every color. The opp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
