|
Candiru (fish)
Candiru (''Vandellia cirrhosa''), also known as cañero, toothpick fish, or vampire fish, is a species of parasitic freshwater catfish in the family Trichomycteridae native to the Amazon Basin where it is found in the countries of Bolivia, Brazil, Colombia, Ecuador, and Peru. The definition of ''candiru'' differs between authors. The word has been used to refer to only ''Vandellia cirrhosa'', the entire genus '' Vandellia'', the subfamily Vandelliinae, or even the two subfamilies Vandelliinae and Stegophilinae. Although some candiru species have been known to grow to a size of in length, others are considerably smaller. These smaller species are known for an alleged tendency to invade and parasitise the human urethra; however, despite ethnological reports dating back to the late 19th century, the first documented case of the removal of a candiru from a human urethra did not occur until 1997, and even that incident has remained a matter of controversy. Description Candirus are ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Achille Valenciennes
Achille Valenciennes (9 August 1794 – 13 April 1865) was a French zoologist. Valenciennes was born in Paris, and studied under Georges Cuvier. His study of parasitic worms in humans made an important contribution to the study of parasitology. He also carried out diverse systematic classifications, linking fossil and current species. He worked with Cuvier on the 22-volume "'' Histoire Naturelle des Poissons''" (Natural History of Fish) (1828–1848), carrying on alone after Cuvier died in 1832. In 1832, he succeeded Henri Marie Ducrotay de Blainville (1777–1850) as chair of ''Histoire naturelle des mollusques, des vers et des zoophytes'' at the Muséum national d'histoire naturelle. Early in his career, he was given the task of classifying animals described by Alexander von Humboldt (1769–1859) during his travels in the American tropics (1799 to 1803), and a lasting friendship was established between the two men. He is the binomial authority for many species of fish, such a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Neotropical Fishes
The freshwater fish of tropical South and Central America represent one of the most diverse and extreme aquatic ecosystems on Earth, with more than 5,600 species, representing about 10% all living vertebrate species. The exceptional diversity of species, adaptations, and life histories observed in the Neotropical ichthyofauna has been the focus of numerous books and scientific papers, especially the wonderfully complex aquatic ecosystems of the Amazon Basin and adjacent river basins (e.g., Goulding and Smith, 1996; Araujo-Lima and Goulding, 1997; Barthem and Goulding, 1997; Barthem, 2003; Goulding et al., 2003). Many of the advances in Neotropical ichthyology have been summarized in three edited volumes: Malabarba et al. (1998); Reis et al. (2003); Albert and Reis (2011). The Neotropical ichthyofauna extends throughout the continental waters of Central and South America, from south of the Mesa Central in southern Mexico (~ 16° N) to the La Plata estuary in northern Argentina (~ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Itacoatiara, Amazonas
Itacoatiara is a municipality in the central eastern portion of state of Amazonas, inland northern Brazil. It is 176 km east by air or 270 km downstream by river from Manaus. It is the third most populous town in the state, on the bank of the Amazon River. Its population was 102,701 (2020) and its area is 8,600 km². Brazilian Institute of Geography and Statistics (IBGE) - The town is known as "City of painted stone" - which is its name translated from Tupi. Itacoatiara has an important port, which is responsible for a considerable amount of cargo transportation in Amazonas. Its Catedral Prelatícia Nossa Senhora do Rosário, dedicated to Our Lady of the Rosary, is the episcopal see of the pre-diocesan Roman Catholic Territorial Prelature of Itacoatiara. History * In 1655, an ''aldeia'' (hamlet) named Arroquis, on Albi Island on the Madeira River, was founded by Portuguese Jesuit missionary António Vieira. It was thereafter moved four times due to agg ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Genipa Americana
''Genipa americana'' () is a species of trees in the family Rubiaceae. It is native to the tropical forests of North and South America, as well as the Caribbean. Description ''Genipa americana'' trees are up to 30 m tall and up to 60 cm dbh. Their bark is smooth with little fissures. The leaves are opposite, obovate, or obovate oblong, 10–35 cm long, 6–13 cm wide, and glossy dark green, with entire margin, acute or acuminate apex, and attenuated base. The inflorescences are cymes up to 10 cm long. The flowers are white to yellowish, slightly fragrant, calyx bell-shaped, corolla at 2–4.5 cm long, trumpet-shaped, and five- or six-lobed. The five short stamens are inserted on top of the corolla tube. The fruit is a thick-skinned edible greyish berry 10–12 cm long, 5–9 cm in diameter. Distribution and habitat ''Genipa americana'' is native to the tropical forests of the Americas, from tropical Florida south to Argentina. It is pres ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Male Urethra
The urethra (from Greek οὐρήθρα – ''ourḗthrā'') is a tube that connects the urinary bladder to the urinary meatus for the removal of urine from the body of both females and males. In human females and other primates, the urethra connects to the urinary meatus above the vagina, whereas in marsupials, the female's urethra empties into the urogenital sinus. Females use their urethra only for urinating, but males use their urethra for both urination and ejaculation. The external urethral sphincter is a striated muscle that allows voluntary control over urination. The internal sphincter, formed by the involuntary smooth muscles lining the bladder neck and urethra, receives its nerve supply by the sympathetic division of the autonomic nervous system. The internal sphincter is present both in males and females. Structure The urethra is a fibrous and muscular tube which connects the urinary bladder to the external urethral meatus. Its length differs between the sexes, b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pará
Pará is a Federative units of Brazil, state of Brazil, located in northern Brazil and traversed by the lower Amazon River. It borders the Brazilian states of Amapá, Maranhão, Tocantins (state), Tocantins, Mato Grosso, Amazonas (Brazilian state), Amazonas and Roraima. To the northwest are the borders of Guyana and Suriname, to the northeast of Pará is the Atlantic Ocean. The capital and largest city is Belém, which is located at the mouth of the Amazon. The state, which is home to 4.1% of the Brazilian population, is responsible for just 2.2% of the Brazilian GDP. Pará is the most populous state of the North Region, Brazil, North Region, with a population of over 8.6 million, being the ninth-most populous state in Brazil. It is the second-largest state of Brazil in area, at , second only to Amazonas (Brazilian state), Amazonas upriver. Its most famous icons are the Amazon River and the Amazon Rainforest. Pará produces Natural rubber, rubber (extracted from natural rubber tree ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eduard Poeppig
Eduard Friedrich Poeppig (16 July 1798 – 4 September 1868) was a German botanist, zoologist and explorer. Biography Poeppig was born in Plauen, Saxony. He studied medicine and natural history at the University of Leipzig, graduating with a medical degree. On graduation, the rector of the university gave him a botanical mission to North and South America. He was helped out financially by a small group of friends and scientists in Leipzig, that included botanist Christian Friedrich Schwägrichen, who in exchange, received sets of specimens.JSTOR Global Plants Poeppig, Eduard Friedrich (1798-1868) He subsequently worked as a naturalist in (1823–24) and |
Urine Stream
Urination, also known as micturition, is the release of urine from the urinary bladder through the urethra to the outside of the body. It is the urinary system's form of excretion. It is also known medically as micturition, voiding, uresis, or, rarely, emiction, and known colloquially by various names including peeing, weeing, and pissing. In healthy humans (and many other animals), the process of urination is under voluntary control. In infants, some elderly individuals, and those with neurological injury, urination may occur as a reflex. It is normal for adult humans to urinate up to seven times during the day. In some animals, in addition to expelling waste material, urination can mark territory or express submissiveness. Physiologically, urination involves coordination between the central, autonomic, and somatic nervous systems. Brain centres that regulate urination include the pontine micturition center, periaqueductal gray, and the cerebral cortex. In placental ma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fluid Mechanics
Fluid mechanics is the branch of physics concerned with the mechanics of fluids ( liquids, gases, and plasmas) and the forces on them. It has applications in a wide range of disciplines, including mechanical, aerospace, civil, chemical and biomedical engineering, geophysics, oceanography, meteorology, astrophysics, and biology. It can be divided into fluid statics, the study of fluids at rest; and fluid dynamics, the study of the effect of forces on fluid motion. It is a branch of continuum mechanics, a subject which models matter without using the information that it is made out of atoms; that is, it models matter from a ''macroscopic'' viewpoint rather than from ''microscopic''. Fluid mechanics, especially fluid dynamics, is an active field of research, typically mathematically complex. Many problems are partly or wholly unsolved and are best addressed by numerical methods, typically using computers. A modern discipline, called computational fluid dynamics (CFD), is dev ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Francis De Laporte De Castelnau
Francis may refer to: People *Pope Francis, the head of the Catholic Church and sovereign of the Vatican City State and Bishop of Rome *Francis (given name), including a list of people and fictional characters *Francis (surname) Places * Rural Municipality of Francis No. 127, Saskatchewan, Canada * Francis, Saskatchewan, Canada **Francis (electoral district) * Francis, Nebraska *Francis Township, Holt County, Nebraska * Francis, Oklahoma *Francis, Utah Other uses * ''Francis'' (film), the first of a series of comedies featuring Francis the Talking Mule, voiced by Chill Wills *''Francis'', a 1983 play by Julian Mitchell *FRANCIS, a bibliographic database * ''Francis'' (1793), a colonial schooner in Australia *Francis turbine, a type of water turbine *Francis (band), a Sweden-based folk band * Francis, a character played by YouTuber Boogie2988 See also *Saint Francis (other) *Francies, a surname, including a list of people with the name *Francisco (other) *Franci ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carl Friedrich Philipp Von Martius
Carl Friedrich Philipp (Karl Friedrich Philipp) von Martius (17 April 1794 – 13 December 1868) was a German botanist and explorer. Life Martius was born at Erlangen, the son of Prof Ernst Wilhelm Martius, court apothecary. He graduated PhD from Erlangen University in 1814, publishing as his thesis a critical catalogue of plants in the university's botanical garden. After that he continued to devote himself to botanical study, and in 1817 he and Johann Baptist von Spix were sent to Brazil by Maximilian I Joseph, the king of Bavaria. They travelled from Rio de Janeiro through several of the southern and eastern provinces of Brazil and travelled up the Amazon River to Tabatinga, as well as exploring some of its larger tributaries. On his return to Europe in 1820 Martius was appointed as the keeper of the botanic garden at Munich, including the herbarium at the Munich Botanical Collection, and in 1826 as professor of botany in the university there, and he held both offices unti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anecdotal Evidence
Anecdotal evidence is evidence based only on personal observation, collected in a casual or non-systematic manner. The term is sometimes used in a legal context to describe certain kinds of testimony which are uncorroborated by objective, independent evidence such as notarized documentation, photographs, audio-visual recordings, etc. When used in advertising or promotion of a product, service, or idea, anecdotal reports are often called a testimonial, which are highly regulated in some jurisdictions. When compared to other types of evidence, anecdotal evidence is generally regarded as limited in value due to a number of potential weaknesses, but may be considered within the scope of scientific method as some anecdotal evidence can be both empirical and verifiable, e.g. in the use of case studies in medicine. Other anecdotal evidence, however, does not qualify as scientific evidence, because its nature prevents it from being investigated by the scientific method. Where only one or ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
