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Amblyopsis Hoosieri
''Amblyopsis'' is a genus of small (up to long) fish in the family Amblyopsidae that are endemic to the central and eastern United States. Like other cavefish, they lack pigmentation and are blind. The most recently described species was in 2014. Uniquely among fish, ''Amblyopsis'' brood their eggs in the gill chambers (somewhat like mouthbrooders). It was formerly incorrectly speculated that the same brooding behavior existed in other genera in the family and in the pirate perch (''Aphredoderus sayanus''). During the Pleistocene period, the modern Ohio river was a barrier of dispersal and created a great genetic variation, leading to two phylogenetically distinct lineages from the species Amblyopsis. Species There are currently 3 species of this genus: * '' Amblyopsis hoosieri'' Niemiller, Prejean & Chakrabarty, 2014 (Hoosier cavefish) * ''Amblyopsis rosae The Ozark cavefish, ''Troglichthys rosae'', is a small subterranean freshwater fish endemic to the United States. I ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ozark Cavefish
The Ozark cavefish, ''Troglichthys rosae'', is a small subterranean freshwater fish endemic to the United States. It has been listed as a threatened species in the US since 1984; the IUCN currently lists the species as Near Threatened, though it was previously listed as Vulnerable (VU D1+2 v2.3) between 1986 and 1996. It is listed as Endangered and Threatened by the Missouri Department of Conservation. Description The Ozark cavefish is pinkish-white and reaches a maximum length of . The head is flattened, and it has a slightly protruding lower jaw. The fish has no pelvic fin; the dorsal and anal fins are farther back than on most fish. It has only rudimentary eyes and no optic nerve. The Ozark cavefish lives only in caves. It has no pigmentation and has lost some unused characteristics. However, it is well adapted to a cave environment through well-developed sensory papillae. They feed primarily on microscopic organisms, as well as small crustaceans and salamander larvae. Their ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Species
A species () is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. It is the basic unit of Taxonomy (biology), classification and a taxonomic rank of an organism, as well as a unit of biodiversity. Other ways of defining species include their karyotype, DNA sequence, morphology (biology), morphology, behaviour, or ecological niche. In addition, palaeontologists use the concept of the chronospecies since fossil reproduction cannot be examined. The most recent rigorous estimate for the total number of species of eukaryotes is between 8 and 8.7 million. About 14% of these had been described by 2011. All species (except viruses) are given a binomial nomenclature, two-part name, a "binomen". The first part of a binomen is the name of a genus to which the species belongs. The second part is called the specific name (zoology), specific name or the specific ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cave Fish
Cavefish or cave fish is a generic term for fresh and brackish water fish adapted to life in caves and other underground habitats. Related terms are subterranean fish, troglomorphic fish, troglobitic fish, stygobitic fish, phreatic fish, and hypogean fish.Romero, Aldemaro, editor (2001). ''The Biology of Hypogean Fishes.'' Developments in Environmental Biology of Fishes. Helfman, G.S. (2007). ''Fish Conservation: A Guide to Understanding and Restoring Global Aquatic Biodiversity and Fishery Resources'', pp. 41–42. Island Press. There are more than 200 scientifically described species of obligate cavefish found on all continents, except Antarctica. Although widespread as a group, many species have very small ranges and are threatened.Fenolio, D.B.; Zhao, Y.; Niemiller, M.L.; and Stout, J. (2013). ''In-situ observations of seven enigmatic cave loaches and one cave barbel from Guangxi, China, with notes on conservation status.'' Speleobiology Notes 5: 19–33.Proudlove, G ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amblyopsis Spelaea
The northern cavefish or northern blindfish (''Amblyopsis spelaea'') is found in caves through Kentucky and southern Indiana. The International Union for Conservation of Nature lists the species as near threatened. The life cycle of northern cavefish includes a protolarval stage. In this stage, eggs and those that have recently hatched into protolarvae are kept by the mother internally in a gill chamber. Juveniles become free swimming and can leave. The northern cavefish lives to a maximum age of at least ten years and reaches sexual maturity at approximately six years of age. Some estimates suggest that speciments may live up to 30-40 years in environments with stable food supplies. During a 2013 study of ''Amblyopsis spelaea'', scientists found that the species was divided into two distinct evolutionary lineages: one north of the Ohio River, in Indiana, and one south of the river, in Kentucky. The southern population retained the name ''A. spelaea'' and the northern was r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carl H
Carl may refer to: *Carl, Georgia, city in USA *Carl, West Virginia, an unincorporated community *Carl (name), includes info about the name, variations of the name, and a list of people with the name *Carl², a TV series * "Carl", an episode of television series ''Aqua Teen Hunger Force'' * An informal nickname for a student or alum of Carleton College CARL may refer to: *Canadian Association of Research Libraries *Colorado Alliance of Research Libraries See also *Carle (other) *Charles *Carle, a surname *Karl (other) *Karle (other) Karle may refer to: Places * Karle (Svitavy District), a municipality and village in the Czech Republic * Karli, India, a town in Maharashtra, India ** Karla Caves, a complex of Buddhist cave shrines * Karle, Belgaum, a settlement in Belgaum ... {{disambig ja:カール zh:卡尔 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amblyopsis Rosae
The Ozark cavefish, ''Troglichthys rosae'', is a small subterranean freshwater fish endemic to the United States. It has been listed as a threatened species in the US since 1984; the IUCN currently lists the species as Near Threatened, though it was previously listed as Vulnerable (VU D1+2 v2.3) between 1986 and 1996. It is listed as Endangered and Threatened by the Missouri Department of Conservation. Description The Ozark cavefish is pinkish-white and reaches a maximum length of . The head is flattened, and it has a slightly protruding lower jaw. The fish has no pelvic fin; the dorsal and anal fins are farther back than on most fish. It has only rudimentary eyes and no optic nerve. The Ozark cavefish lives only in caves. It has no pigmentation and has lost some unused characteristics. However, it is well adapted to a cave environment through well-developed sensory papillae. They feed primarily on microscopic organisms, as well as small crustaceans and salamander larvae. Their ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Prosanta Chakrabarty
Prosanta Chakrabarty (born November 25, 1978) is an American ichthyologist and George H. Lowery Jr. Professor of ichthyology, evolution and systematics at Louisiana State University. He studied at McGill University where he received a bachelor of science in Applied Zoology and at the University of Michigan where he obtained his PhD in Ecology and Evolution. Among other professional positions he was a Program Director for the National Science Foundation and was the President of the American Society of Ichthyologist and Herpetologist in 2023. He was named a TED Fellow in 2016, and a TED Senior Fellow in 2018. He was named an Elected Fellow of the AAAS for "distinguished contributions to evolutionary biology, focusing on the bioluminescent systems and historical biogeography of freshwater fishes, and for effectively communicating science to the public". Research Chakrabarty's research has taken him to over 30 countries and has described over 13 new species of fishes. In 2014 h ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jacques Andre Prejean
Jacques or Jacq are believed to originate from the Middle Ages in the historic northwest Brittany region in France, and have since spread around the world over the centuries. To date, there are over one hundred identified noble families related to the surname by the Nobility & Gentry of Great Britain & Ireland. Origins The origin of this surname comes from the Latin ' Iacobus', associated with the biblical patriarch Jacob. Ancient history A French knight returning from the Crusades in the Holy Lands probably adopted the surname from "Saint Jacques" (or "James the Greater"). James the Greater was one of Jesus' Twelve Apostles, and is believed to be the first martyred apostle. Being endowed with this surname was an honor at the time and it is likely that the Church allowed it because of acts during the Crusades. Indeed, at this time, the use of biblical, Christian, or Hebrew names and surnames became very popular, and entered the European lexicon. Robert J., a Knight Crusader ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Matthew Lance Niemiller
Matthew may refer to: * Matthew (given name) * Matthew (surname) * ''Matthew'' (album), a 2000 album by rapper Kool Keith * Matthew (elm cultivar), a cultivar of the Chinese Elm ''Ulmus parvifolia'' Christianity * Matthew the Apostle, one of the apostles of Jesus * Gospel of Matthew, a book of the Bible Ships * ''Matthew'' (1497 ship), the ship sailed by John Cabot in 1497, with two 1990s replicas * MV ''Matthew I'', a suspected drug-runner scuttled in 2013 * Interdiction of MV ''Matthew'', a 2023 operation of the Irish military against a 2001 Panamanian cargo ship See also * Matt (given name), the diminutive form of Matthew * Mathew, alternative spelling of Matthew * Matthews (other) * Matthew effect The Matthew effect, sometimes called the Matthew principle or cumulative advantage, is the tendency of individuals to accrue social or economic success in proportion to their initial level of popularity, friends, and wealth. It is sometimes summar ... * Tropic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amblyopsis Hoosieri
''Amblyopsis'' is a genus of small (up to long) fish in the family Amblyopsidae that are endemic to the central and eastern United States. Like other cavefish, they lack pigmentation and are blind. The most recently described species was in 2014. Uniquely among fish, ''Amblyopsis'' brood their eggs in the gill chambers (somewhat like mouthbrooders). It was formerly incorrectly speculated that the same brooding behavior existed in other genera in the family and in the pirate perch (''Aphredoderus sayanus''). During the Pleistocene period, the modern Ohio river was a barrier of dispersal and created a great genetic variation, leading to two phylogenetically distinct lineages from the species Amblyopsis. Species There are currently 3 species of this genus: * '' Amblyopsis hoosieri'' Niemiller, Prejean & Chakrabarty, 2014 (Hoosier cavefish) * ''Amblyopsis rosae The Ozark cavefish, ''Troglichthys rosae'', is a small subterranean freshwater fish endemic to the United States. I ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pleistocene
The Pleistocene ( ; referred to colloquially as the ''ice age, Ice Age'') is the geological epoch (geology), epoch that lasted from to 11,700 years ago, spanning the Earth's most recent period of repeated glaciations. Before a change was finally confirmed in 2009 by the International Union of Geological Sciences, the cutoff of the Pleistocene and the preceding Pliocene was regarded as being 1.806 million years Before Present (BP). Publications from earlier years may use either definition of the period. The end of the Pleistocene corresponds with the end of the last glacial period and also with the end of the Paleolithic age used in archaeology. The name is a combination of Ancient Greek () 'most' and (; Latinized as ) 'new'. The aridification and cooling trends of the preceding Neogene were continued in the Pleistocene. The climate was strongly variable depending on the glacial cycle, oscillating between cold Glacial period, glacial periods and warmer Interglacial, int ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Northern Cavefish
The northern cavefish or northern blindfish (''Amblyopsis spelaea'') is found in caves through Kentucky and southern Indiana. The International Union for Conservation of Nature lists the species as near threatened. The life cycle of northern cavefish includes a protolarval stage. In this stage, eggs and those that have recently hatched into protolarvae are kept by the mother internally in a gill chamber. Juveniles become free swimming and can leave. The northern cavefish lives to a maximum age of at least ten years and reaches sexual maturity at approximately six years of age. Some estimates suggest that speciments may live up to 30-40 years in environments with stable food supplies. During a 2013 study of ''Amblyopsis spelaea'', scientists found that the species was divided into two distinct evolutionary lineages: one north of the Ohio River, in Indiana, and one south of the river, in Kentucky. The southern population retained the name ''A. spelaea'' and the northern was r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
