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Entomocorus
''Entomocorus'' is a genus of catfishes (order Siluriformes) of the family Auchenipteridae. Taxonomy and phylogeny ''Entomocorus'' was first described by Carl H. Eigenmann in 1917 with ''E. benjamini'' as type species by monotypy. Only a few phylogenetic diagnoses have been presented since. ''Entomocorus'' is included as the basal member in the ''Auchenipterus''-Group by Carl H. Ferraris; this group also includes '' Auchenipterus'' and the sister groups '' Epapterus'' and '' Pseudepapterus''. This group is sister to the ''Ageneiosus''-Group, which includes the genera ''Ageneiosus'' and '' Tetranematichthys''. These groups, along with the genus '' Trachelyopterus'', form the tribe Auchenipterini. However, the placement of ''Entomocorus'' is problematic due to the loss of some characteristics of that diagnose Auchenipteridae and Auchenipterini. Relationships between species of ''Entomocorus'' are unknown. Species There are currently four described species in this genus: * '' En ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Entomocorus Benjamini
''Entomocorus benjamini'' is a species of driftwood catfish found in the Madeira River system in Bolivia and Brazil. This species grows to a length of 7.0 cm and can be distinguished from it congeners in that the distal half of dorsal caudal fin lobe and the edge of the ventral lobe is pigmented. ''E. benjamini'' has been classified as an invertivore that feeds on aquatic and terrestrial invertebrates (primarily insects), zooplankton (including cladocerans, copepods, and rotiferans), and both aquatic and terrestrial vegetation. It has been noted that a single fish could ingest as many as 1700 planktonic crustaceans in a single night, when this species feeds near the water surface. References Further reading * Eigenmann, CH (1917). "New and rare species of South American Siluridae in the Carnegie Museum." ''Annals of Carnegie Museum ''Annals of Carnegie Museum'' is a peer-reviewed academic journal published by the Carnegie Museum of Natural History. It was establis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Entomocorus Gameroi
''Entomocorus gameroi'' is a species of driftwood catfish native (possibly endemic) to Venezuela and questionably present in Colombia. It is found in the Apure River basin. It grows to a length of 7.0 cm and can be distinguished from its congeners by an oblique band crossing from the dorsal profile of the caudal peduncle to the middle-upper rays of the caudal fin. ''E. gameroi'' is classified as an omnivore with a tendency towards insectivory; it has been found to eat cladocerans, copepods, and water mites, as well as ostracods, insects including coleopterans, dipterans, ephemeropterans, hemipterans, and seeds and other vegetal matter. During the day, ''E. gameroi'' rests motionlessly. This species has been found to hide among the submerged roots of water hyacinth during the day, but may also use alternative sources of shelter such as wood, rocks, and other benthic substrata in hyacinth-free locations. The reproductive cycle of ''E. gameroi'' has been studied, and it is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Entomocorus Radiosus
''Entomocorus radiosus'' is a species of driftwood catfish endemic to Brazil where it is found in the Rio Paraguay in the Pantanal region of Mato Grosso. It is the smallest known member of its genus growing to a length of 5.3 cm. It can be distinguished from its congeners because its anal fin Fins are distinctive anatomical features composed of bony spines or rays protruding from the body of a fish. They are covered with skin and joined together either in a webbed fashion, as seen in most bony fish, or similar to a flipper, as se ... base is longer and has more branched anal fin rays. ''E. radiosus'' is a zooplanktivore which also eats insects; this species predominantly consumes microcrustaceans (cladocerans, copepods, and ostracods), but also fed on insects (ephemeropterans, coleopterans, and hemipterans). References * Auchenipteridae Fish described in 2006 Fish of Brazil Endemic fauna of Brazil {{siluriformes-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Entomocorus Melaphareus
''Entomocorus melaphareus'' is a species of driftwood catfish endemic to Brazil where it is found in the Amazon River The Amazon River (, ; es, Río Amazonas, pt, Rio Amazonas) in South America is the largest river by discharge volume of water in the world, and the disputed longest river system in the world in comparison to the Nile. The headwaters of t .... It grows to a length of 5.9 cm and can be distinguished from its congeners by an inconspicuous patch exists on the dorsal lobe of the caudal fin. It also has pigmented pectoral and pelvic fins, while these fins in the other three species are unpigmented. References * Auchenipteridae Fish described in 2003 Endemic fauna of Brazil {{siluriformes-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Driftwood Catfish
The driftwood catfishes are catfishes of the family Auchenipteridae. The two genera of the former family Ageneiosidae have been placed here, resulting in a grouping of about 125 species in about 22 genera. These fish are found in rivers from Panama to Argentina, commonly in river flood plains. All but one species have three pairs of barbels, with the nasal barbels absent. Most species have very small adipose fins. While ''Ageneiosus inermis'', also known as the fidalgo, is known to reach in length, most are small, with some species not known at any longer than . The eggs are fertilised internally. Driftwood catfishes are nocturnal. Some of the smaller species are known to hide in logs and crevices during the day, and come out to feed at night. Some larger species can consume fruits and insects, and are probably omnivorous. Fish of this family seem to feed primarily on insects, but also eat fish, shrimp, fruit, and even filamentous algae Algae (; singular alga ) is an inform ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Francisco Mago Leccia
Francisco Mago Leccia (“Mago”) was born in Tumeremo, Bolívar State, Venezuela on May 21, 1931 and died in Puerto La Cruz, Anzoátegui State, Venezuela on February 27, 2004.Schaefer, Provenzano, Pinna & Baskin (2005) - ''New and Noteworthy Venezuelan Glanapterygine Catfishes (Siluriformes, Trichomycteridae), with Discussion of Their Biogeography and Psammophily''. ''American Museum Novitates'', No. 3496, Mago was a distinguished Venezuelan ichthyologist who specialized in electric fish of the rivers and lagoons of South America, particularly of Venezuela. His education was Docent in Biology and Chemistry graduate from the “Instituto Pedagógico de Caracas”, (today Universidad Pedagógica Experimental El Libertador), Master of Sciences (Marine Biology) from the University of Miami, Florida, U.S.A., Doctor in Sciences from Universidad Central de Venezuela. His Doctoral Thesis was entitled: “''Los peces Gymnotiformes de Venezuela: un estudio preliminar para la revisión de ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ossification
Ossification (also called osteogenesis or bone mineralization) in bone remodeling is the process of laying down new bone material by cells named osteoblasts. It is synonymous with bone tissue formation. There are two processes resulting in the formation of normal, healthy bone tissue: Intramembranous ossification is the direct laying down of bone into the primitive connective tissue ( mesenchyme), while endochondral ossification involves cartilage as a precursor. In fracture healing, endochondral osteogenesis is the most commonly occurring process, for example in fractures of long bones treated by plaster of Paris, whereas fractures treated by open reduction and internal fixation with metal plates, screws, pins, rods and nails may heal by intramembranous osteogenesis. Heterotopic ossification is a process resulting in the formation of bone tissue that is often atypical, at an extraskeletal location. Calcification is often confused with ossification. Calcification is sy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sexual Dimorphism
Sexual dimorphism is the condition where the sexes of the same animal and/or plant species exhibit different morphological characteristics, particularly characteristics not directly involved in reproduction. The condition occurs in most animals and some plants. Differences may include secondary sex characteristics, size, weight, colour, markings, or behavioural or cognitive traits. These differences may be subtle or exaggerated and may be subjected to sexual selection and natural selection. The opposite of dimorphism is ''monomorphism'', which is when both biological sexes are phenotypically indistinguishable from each other. Overview Ornamentation and coloration Common and easily identified types of dimorphism consist of ornamentation and coloration, though not always apparent. A difference in coloration of sexes within a given species is called sexual dichromatism, which is commonly seen in many species of birds and reptiles. Sexual selection leads to the exaggerated dim ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fish Measurement
Fish measurement is the measuring of individual fish and various parts of their anatomies. These data are used in many areas of ichthyology, including taxonomy and fisheries biology. Overall length * Standard length (SL) is the length of a fish measured from the tip of the snout to the posterior end of the last vertebra or to the posterior end of the midlateral portion of the hypural plate. Simply put, this measurement excludes the length of the caudal (tail) fin. * Total length (TL) is the length of a fish measured from the tip of the snout to the tip of the longer lobe of the caudal fin, usually measured with the lobes compressed along the midline. It is a straight-line measure, not measured over the curve of the body. Standard length measurements are used with Teleostei (most bony fish), while total length measurements are used with Myxini (hagfish), Petromyzontiformes (lampreys), and (usually) Elasmobranchii (sharks and rays), as well as some other fishes. Total length meas ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Copeia
''Ichthyology & Herpetology'' (formerly ''Copeia'') is a quarterly peer-reviewed scientific journal covering research in ichthyology and herpetology that was originally named after Edward Drinker Cope, a prominent American researcher in these fields. It is the official journal of the American Society of Ichthyologists and Herpetologists. According to the ''Journal Citation Reports'', ''Copeia'' has a 2021 impact factor of 1.857, ranking it 65th out of 176 journals in the category "Zoology". History On December 27, 1913, John Treadwell Nichols published the first issue of ''Copeia''. This issue consisted of a single piece of paper folded to form four pages of information with five articles. The cover of the pamphlet bore the inscription: "Published by the contributors to advance the science of coldblooded vertebrates." In 2020, the American Society of Ichthyologists and Herpetologists voted to rename the journal, Ichthyology & Herpetology. Name change The journal was na ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
South America
South America is a continent entirely in the Western Hemisphere and mostly in the Southern Hemisphere, with a relatively small portion in the Northern Hemisphere at the northern tip of the continent. It can also be described as the southern subregion of a single continent called America. South America is bordered on the west by the Pacific Ocean and on the north and east by the Atlantic Ocean; North America and the Caribbean Sea lie to the northwest. The continent generally includes twelve sovereign states: Argentina, Bolivia, Brazil, Chile, Colombia, Ecuador, Guyana, Paraguay, Peru, Suriname, Uruguay, and Venezuela; two dependent territories: the Falkland Islands and South Georgia and the South Sandwich Islands; and one internal territory: French Guiana. In addition, the ABC islands of the Kingdom of the Netherlands, Ascension Island (dependency of Saint Helena, Ascension and Tristan da Cunha, a British Overseas Territory), Bouvet Island ( dependency of Norway), Pa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Andes
The Andes, Andes Mountains or Andean Mountains (; ) are the longest continental mountain range in the world, forming a continuous highland along the western edge of South America. The range is long, wide (widest between 18°S – 20°S latitude), and has an average height of about . The Andes extend from north to south through seven South American countries: Venezuela, Colombia, Ecuador, Peru, Bolivia, Chile, and Argentina. Along their length, the Andes are split into several ranges, separated by intermediate depressions. The Andes are the location of several high plateaus—some of which host major cities such as Quito, Bogotá, Cali, Arequipa, Medellín, Bucaramanga, Sucre, Mérida, El Alto and La Paz. The Altiplano plateau is the world's second-highest after the Tibetan plateau. These ranges are in turn grouped into three major divisions based on climate: the Tropical Andes, the Dry Andes, and the Wet Andes. The Andes Mountains are the highest m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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