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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] |
James Ellsworth De Kay
James Ellsworth De Kay (alternatively spelled DeKay or Dekay) (October 12, 1792 – November 21, 1851) was an American zoologist. Biography James De Kay was born in Lisbon, Portugal, in 1792. When he was two years old, his family moved to New York City, New York; both his parents died while he was still quite young. He attended Yale from 1807 to 1812, but was expelled before completing his degree when he threatened a college tutor with a club. Later, he studied medicine at the University of Edinburgh, receiving his Doctor of Medicine, MD in 1819. After his return to the United States, he married Janet Eckford, a daughter of Henry Eckford (shipbuilder), Henry Eckford, a ship builder. He then traveled with his father-in-law to Turkey as a ship's physician, and published a book, ''Sketches of Turkey in 1831 and 1832,'' about these travels. Although well received as an entertaining Travelogue (literature), travelogue, his book has been criticized as being very anti-Hellenic as we ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Endangered Species Act
The Endangered Species Act of 1973 (ESA; 16 U.S.C. § 1531 et seq.) is the primary law in the United States for protecting and conserving imperiled species. Designed to protect critically imperiled species from extinction as a "consequence of economic growth and development untempered by adequate concern and conservation", the ESA was signed into law by President Presidency of Richard Nixon#Environmental policy, Richard Nixon on December 28, 1973. The Supreme Court of the United States described it as "the most comprehensive legislation for the preservation of endangered species enacted by any nation"."Tennessee Valley Authority v. Hill" 437 U.S. 153 (1978) Retrieved 24 November 2015. The purposes of the ESA are two-fold: to prevent extinction and to recover species to the point wher ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fish Described In 1842
A fish (: fish or fishes) is an aquatic, anamniotic, gill-bearing vertebrate animal with swimming fins and a hard skull, but lacking limbs with digits. Fish can be grouped into the more basal jawless fish and the more common jawed fish, the latter including all living cartilaginous and bony fish, as well as the extinct placoderms and acanthodians. In a break to the long tradition of grouping all fish into a single class (Pisces), modern phylogenetics views fish as a paraphyletic group. Most fish are cold-blooded, their body temperature varying with the surrounding water, though some large active swimmers like white shark and tuna can hold a higher core temperature. Many fish can communicate acoustically with each other, such as during courtship displays. The study of fish is known as ichthyology. The earliest fish appeared during the Cambrian as small filter feeders; they continued to evolve through the Paleozoic, diversifying into many forms. The earliest fish wi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fish Of The United States
A fish (: fish or fishes) is an aquatic animal, aquatic, Anamniotes, anamniotic, gill-bearing vertebrate animal with swimming fish fin, fins and craniate, a hard skull, but lacking limb (anatomy), limbs with digit (anatomy), digits. Fish can be grouped into the more basal (phylogenetics), basal jawless fish and the more common jawed fish, the latter including all extant taxon, living cartilaginous fish, cartilaginous and bony fish, as well as the extinct placoderms and acanthodians. In a break to the long tradition of grouping all fish into a single Class (biology), class (Pisces), modern phylogenetics views fish as a paraphyletic group. Most fish are ectotherm, cold-blooded, their body temperature varying with the surrounding water, though some large nekton, active swimmers like white shark and tuna can hold a higher core temperature. Many fish can communication in aquatic animals#Acoustic, communicate acoustically with each other, such as during courtship displays. The stud ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fish Of North America
A fish (: fish or fishes) is an aquatic, anamniotic, gill-bearing vertebrate animal with swimming fins and a hard skull, but lacking limbs with digits. Fish can be grouped into the more basal jawless fish and the more common jawed fish, the latter including all living cartilaginous and bony fish, as well as the extinct placoderms and acanthodians. In a break to the long tradition of grouping all fish into a single class (Pisces), modern phylogenetics views fish as a paraphyletic group. Most fish are cold-blooded, their body temperature varying with the surrounding water, though some large active swimmers like white shark and tuna can hold a higher core temperature. Many fish can communicate acoustically with each other, such as during courtship displays. The study of fish is known as ichthyology. The earliest fish appeared during the Cambrian as small filter feeders; they continued to evolve through the Paleozoic, diversifying into many forms. The earliest fish w ... [...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] |
Amblyopsidae
The Amblyopsidae are a fish family commonly referred to as cavefish, blindfish, or swampfish. They are small freshwater fish found in the dark environments of caves (underground lakes, pools, rivers and streams), springs and swamps in the eastern half of the United States. Like other troglobites, most amblyopsids exhibit adaptations to these dark environments, including the lack of functional eyes and the absence of pigmentation. More than 200 species of cavefishes are known,Riesch, R.; Tobler, M.; and Plath, M. (2015). ''Extremophile Fishes: Ecology, Evolution, and Physiology of Teleosts in Extreme Environments.'' but only six of these are in the family Amblyopsidae.Romero, A., editor (2001). ''The Biology of Hypogean Fishes.'' Developments in Environmental Biology of Fishes. One of these, '' Forbesichthys agassizii'', spends time both underground and aboveground. A seventh species in this family, '' Chologaster cornuta'', is not a cave-dweller but lives in aboveground swamps ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rough Creek Fault Zone
Rough may refer to: * Roughness (other) * Rough (golf), the area outside the fairway on a golf course Geography * Rough (facility), former gas field now gas storage facility, off the Yorkshire coast of England People * Alan Rough (born 1951), Scottish football goalkeeper * Katie Rough (2009–2017), British girl killed by a 15 year old girl * Peter Rough (born 1983), senior fellow of the conservative US think tank Hudson Institute * Remi Rough, English street artist * William Rough (c. 1772 – 1838), English lawyer, judge and poet Entertainment * Rough (manga) * ''Rough'' (film), a 2013 film * ''Rough'' (album), released by Tina Turner in 1978 *Rough (song), 2016 Korean song by GFriend * Rough (creative group), Rough.Lab is a creative group based on Seoul. See also * Roughs and roughing, in sports, especially in ice hockey * Roughs, another name for Afghan biscuits An Afghan is a traditional New Zealand biscuit made from flour, butter, cornflakes, sugar and coco ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Metapopulation
A metapopulation consists of a group of spatially separated populations of the same species which interact at some level. The term metapopulation was coined by Richard Levins in 1969 to describe a model of population dynamics of insect pests in agricultural fields, but the idea has been most broadly applied to species in naturally or artificially fragmented habitats. In Levins' own words, it consists of "a population of populations". A metapopulation is generally considered to consist of several distinct populations together with areas of suitable habitat which are currently unoccupied. In classical metapopulation theory, each population cycles in relative independence of the other populations and eventually goes extinct as a consequence of demographic stochasticity (fluctuations in population size due to random demographic events); the smaller the population, the more chances of inbreeding depression and prone to extinction. Although individual populations have finite life-span ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bedford, Indiana
Bedford is a city in Shawswick Township and the county seat of Lawrence County, Indiana, United States. In the 2020 census, the population was 13,792. That is up from 13,413 in 2010. Bedford is the principal city of the Bedford, IN Micropolitan Statistical Area, which comprises all of Lawrence County. History Bedford was laid out as a town and the county seat of Lawrence County, Indiana, United States in 1825. The original county seat was in Palestine, four miles to the south, but was moved, at the urging of the legislature, to a new location as the original location near the White River was deemed unhealthy because of malaria spread by mosquitoes. The new site was named Bedford at the suggestion of a prominent local businessman, Joseph Rawlins, who had relocated to the area from Bedford County, Tennessee. It incorporated as a town in 1864 and received its city charter in 1889. Bedford was a stop on the Underground Railroad. Geography According to the 2010 census, Bedfor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cavefish
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, Troglomorphism, 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 Species description, 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 species, 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 sta ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
White River (Indiana)
The White River is an American River fork, two-forked river that flows through central and southern Indiana and is the main tributary to the Wabash River. Via the west fork, considered to be the main stem of the river by the U.S. Board on Geographic Names, the White River is long.U.S. Geological Survey. National Hydrography Dataset high-resolution flowline dataThe National Map accessed May 19, 2011 Indiana's capital, Indianapolis, is located along the river. The two forks meet just north of Petersburg, Indiana, Petersburg and empty into the Wabash River at Mount Carmel, Illinois. West Fork The West Fork, long, is the main fork of the river. Federal maps refer to it simply as the White River, per a 1950 Board on Geographic Names decision. It starts south of Winchester, Indiana, Winchester in Randolph County, Indiana, Randolph County at 40° 04' 46" N, 84° 55' 58" W in Washington Township, Randolph County, Indiana, Washington Township. The river winds through Muncie, Indiana ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
