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Nosferatu Pratinus
''Nosferatu pratinus'' (previously placed in the genus '' Herichthys''), also known as green labridens or mojarra caracolera verde in Spanish, is a species of cichlid "endemic to the Rio el Salto,in the Rio Pánuco Basin in Mexico. The river runs through the Sierra La Colmena, where a series of pools and cascades called “Micos” occur. The area includes seven cascades with heights of five meters or more. Up the river is a town called El Naranjo, which is 102 km north from Ciudad Valles at the border between the States of Tamaulipas and San Luis Potosí. Two kilometers upstream from El Naranjo exists a series of pools and cascades, such as El Salto and El Meco, which are 70-m and 35-m high, respectively; both sites are inhabited by ''H. pratinus''." "This species is distinguished by predorsal contour steep and flat, and a concavity before eye; prominent forehead that develops a nuchal hump in adult males. Dorsal and ventral contours are conic, straight to moderately convex, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mauricio De La Maza-Benignos
Mauricio de la Maza-Benignos (July 27, 1970 –) is a Mexican conservationist, naturalist and zoologist. He is also a member of Mexico's National System of Researchers. In addition to his work in ichthyology, he is an agronomist and zootechnician, a jurist, an administrator, and an editor. Education He earned his bachelor's degree at the Monterrey Institute of Technology and Higher Education, a Master of Business Administration at The University of Lancaster, a Ph.D. summa cum laude, at the Autonomous University of Nuevo León, and studied Law, under a merit scholarship at the TecMilenio University. In 1994 he obtained the “Best students of Mexico Award” by the “National Permanent Committee for the Best Students of Mexico”, and in 2014 he was awarded first place in the “Dr. José Álvarez Del Villar” prize for his doctoral thesis, by the Mexican Ichthyology Society. He developed his doctoral thesis under the direction of Professor and Ichthyologist Ma. de ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
María De Lourdes Lozano-Vilano
Maria may refer to: People * Mary, mother of Jesus * Maria (given name), a popular given name in many languages Place names Extraterrestrial *170 Maria, a Main belt S-type asteroid discovered in 1877 *Lunar maria (plural of ''mare''), large, dark basaltic plains on Earth's Moon Terrestrial *Maria, Maevatanana, Madagascar *Maria, Quebec, Canada *Maria, Siquijor, the Philippines *María, Spain, in Andalusia *Îles Maria, French Polynesia *María de Huerva, Aragon, Spain *Villa Maria (other) Arts, entertainment, and media Films * ''Maria'' (1947 film), Swedish film * ''Maria'' (1975 film), Swedish film * ''Maria'' (2003 film), Romanian film * ''Maria'' (2019 film), Filipino film * ''Maria'' (2021 film), Canadian film directed by Alec Pronovost * ''Maria'' (Sinhala film), Sri Lankan upcoming film Literature * ''María'' (novel), an 1867 novel by Jorge Isaacs * ''Maria'' (Ukrainian novel), a 1934 novel by the Ukrainian writer Ulas Samchuk * ''Maria'' (play), a 1935 play b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Herichthys
''Herichthys'' is a small genus of cichlid fishes. Most are endemic to Mexico, but '' H. cyanoguttatus'' is also found in southern Texas (United States), and has been introduced to central Texas and Florida. In 2015, the genus was split, and 7 species moved into ''Nosferatu''. Species There are currently 7 recognized species in this genus. Separate mitochondrial DNA analyses by Husley ''et al''., Rican ''et al''., and Oldfield ''et al''., support ''H. minckleyi'' as monophyletic and sister to all other ''Herichthys ''species. Moreover, molecular analysis conducted separately by López-Fernández, ''et al''., and De la Maza-Benignos, ''et al''., did not support ''H. tamasopoensis'', ''H. cyanoguttatus'', ''H. teporatus'', and ''H. carpintis'' as distinct from each other. However, morphological and zoogeographical analysis by De la Maza-Benignos, ''et al''., confirmed the validity of these four species, as well as differential evolutionary trends. Analysis also supported the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cichlid
Cichlids are fish from the family Cichlidae in the order Cichliformes. Cichlids were traditionally classed in a suborder, the Labroidei, along with the wrasses ( Labridae), in the order Perciformes, but molecular studies have contradicted this grouping. The closest living relative of cichlids is probably the convict blenny, and both families are classified in the 5th edition of ''Fishes of the World'' as the two families in the Cichliformes, part of the subseries Ovalentaria. This family is both large and diverse. At least 1,650 species have been scientifically described, making it one of the largest vertebrate families. New species are discovered annually, and many species remain undescribed. The actual number of species is therefore unknown, with estimates varying between 2,000 and 3,000. Many cichlids, particularly tilapia, are important food fishes, while others, such as the ''Cichla'' species, are valued game fish. The family also includes many popular freshwater aquariu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nosferatu Pantostictus
''Nosferatu pantostictus'', the Chairel cichlid, is a species of cichlid native to the Panuco River drainage of Mexico's Atlantic coast where it is mostly found in moderately fast flowing rivers, slightly brackish, murky lakes and lagoons along the coast. It reaches a maximum size of SL though most do not exceed TL. This species can also be found in the aquarium An aquarium (plural: ''aquariums'' or ''aquaria'') is a vivarium of any size having at least one transparent side in which aquatic plants or animals are kept and displayed. Fishkeepers use aquaria to keep fish, invertebrates, amphibians, aq ... trade. References pantostictus Freshwater fish of Mexico Endemic fish of Mexico Pánuco River Natural history of San Luis Potosí Natural history of Tamaulipas Natural history of Veracruz Cichlid fish of Central America Endangered fish Fish described in 1983 Taxa named by Jeffrey N. Taylor Taxa named by Robert Rush Miller {{Cichlidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
COX-1
Cyclooxygenase 1 (COX-1), also known as prostaglandin G/H synthase 1, prostaglandin-endoperoxide synthase 1 or prostaglandin H2 synthase 1, is an enzyme that in humans is encoded by the ''PTGS1'' gene. In humans it is one of two cyclooxygenases. History Cyclooxygenase (COX) is the central enzyme in the biosynthetic pathway to prostaglandins from arachidonic acid. This protein was isolated more than 40 years ago and cloned in 1988. Gene and isozymes There are two isozymes of COX encoded by distinct gene products: a constitutive COX-1 (this enzyme) and an inducible COX-2, which differ in their regulation of expression and tissue distribution. The expression of these two transcripts is differentially regulated by relevant cytokines and growth factors. This gene encodes COX-1, which regulates angiogenesis in endothelial cells. COX-1 is also involved in cell signaling and maintaining tissue homeostasis. A splice variant of COX-1 termed COX-3 was identified in the central nervous sy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nosferatu Steindachneri
''Nosferatu steindachneri'', Steindachner's cichlid, is a species of cichlid endemic to Mexico where it is found in the Tamasopo, Gallinas and Ojo Frio Rivers of the Panuco River basin. It reaches a maximum size of SL. This species can also be found in the aquarium trade. The specific name honours the Austrian ichthyologist Franz Steindachner Franz Steindachner (11 November 1834 in Vienna – 10 December 1919 in Vienna) was an Austrian Zoology, zoologist, ichthyologist, and herpetologist. He published over 200 papers on fishes and over 50 papers on reptiles and amphibians. Steindachne ... (1834-1919). References steindachneri Freshwater fish of Mexico Endemic fish of Mexico Pánuco River Natural history of San Luis Potosí Natural history of Tamaulipas Natural history of Veracruz Endangered fish Cichlid fish of Central America Fish described in 1899 Taxa named by David Starr Jordan Taxa named by John Otterbein Snyder {{Cichlidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nosferatu Pame
''Nosferatu pame'', previously placed in the genus ''Herichthys ''Herichthys'' is a small genus of cichlid fishes. Most are endemic to Mexico, but '' H. cyanoguttatus'' is also found in southern Texas (United States), and has been introduced to central Texas and Florida. In 2015, the genus was split, and 7 ...'', also known as labridens 'white' or mojarra caracolera blanca in Spanish, is a species of cichlid "endemic to the main stem and tributaries of the Rio Gallinas, including Rio Tamasopo, Ojo Frío, and Agua Buena, upriver from the Tamul cascade" in the Pánuco River Basin, San Luis Potosí, Mexico. "This species is distinguished by its predorsal contour being gradual and acute, not concave before eye; dorsal and ventral contours straight to moderately convex, sloping slowly; intersection with caudal peduncle inconspicuous; mouth slightly angled downward. Ground color khaki when alive; snout, head, and opercles heavily dotted with tiny speckles, extending posteriorly on ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sympatric
In biology, two related species or populations are considered sympatric when they exist in the same geographic area and thus frequently encounter one another. An initially interbreeding population that splits into two or more distinct species sharing a common range exemplifies sympatric speciation. Such speciation may be a product of reproductive isolation – which prevents hybrid offspring from being viable or able to reproduce, thereby reducing gene flow – that results in genetic divergence. Sympatric speciation may, but need not, arise through secondary contact, which refers to speciation or divergence in allopatry followed by range expansions leading to an area of sympatry. Sympatric species or taxa in secondary contact may or may not interbreed. Types of populations Four main types of population pairs exist in nature. Sympatric populations (or species) contrast with parapatric populations, which contact one another in adjacent but not shared ranges and do no ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Allopatric
Allopatric speciation () – also referred to as geographic speciation, vicariant speciation, or its earlier name the dumbbell model – is a mode of speciation that occurs when biological populations become geographically isolated from each other to an extent that prevents or interferes with gene flow. Various geographic changes can arise such as the movement of continents, and the formation of mountains, islands, bodies of water, or glaciers. Human activity such as agriculture or developments can also change the distribution of species populations. These factors can substantially alter a region's geography, resulting in the separation of a species population into isolated subpopulations. The vicariant populations then undergo genetic changes as they become subjected to different selective pressures, experience genetic drift, and accumulate different mutations in the separated populations' gene pools. The barriers prevent the exchange of genetic information between t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clade
A clade (), also known as a monophyletic group or natural group, is a group of organisms that are monophyletic – that is, composed of a common ancestor and all its lineal descendants – on a phylogenetic tree. Rather than the English term, the equivalent Latin term ''cladus'' (plural ''cladi'') is often used in taxonomical literature. The common ancestor may be an individual, a population, or a species (extinct or extant). Clades are nested, one in another, as each branch in turn splits into smaller branches. These splits reflect evolutionary history as populations diverged and evolved independently. Clades are termed monophyletic (Greek: "one clan") groups. Over the last few decades, the cladistic approach has revolutionized biological classification and revealed surprising evolutionary relationships among organisms. Increasingly, taxonomists try to avoid naming taxa that are not clades; that is, taxa that are not monophyletic. Some of the relationships between organisms ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nosferatu (fish)
''Nosferatu'' is a genus of cichlid fishes endemic to the Rio Panuco Basin and the tributaries of the adjacent Tamiahua Lagoon (to the South) and San Andrés Lagoon (to the North) in the states of Veracruz, Hidalgo, San Luis Potosí, Tamaulipas and Querétaro, Mexico. The genus is characterized by a prolongation in the size of the symphysial pair of teeth relative to that of the other teeth in the outer row of the upper jaw (nosferatuform teeth); breeding pigmentation that consists of darkening of ventral area extending over nostrils, opercular series, and pectoral fins; depressed dorsal fin rarely expands beyond anterior third of caudal fin; and an elongated, elastic, smooth caecum adhered to a saccular stomach. All species in ''Nosferatu'' had previously belonged to its sister genus ''Herichthys''. Species There are currently 7 recognized species in this genus: * '' Nosferatu bartoni'' ( T. H. Bean, 1892) (Barton's cichlid) * ''Nosferatu labridens'' ( Pellegrin, 1903) (Curve-ba ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
