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Potosi Pupfish
Potosi pupfish (''Cyprinodon alvarezi'') is a species of fish in the family Cyprinodontidae. It is endemic to Mexico, but is now extinct in the wild, only surviving in captivity. Distribution The Potosi pupfish is endemic to an isolated spring known as Ojo de Potosi near El Potosi, a settlement in southwestern Nuevo Leon state in Mexico. However, the species is now regarded as being extinct in the wild, and is represented only by captive populations. Habitat and extinction in the wild The Potosi pupfish is endemic to a clear spring-fed pool in an endorheic basin known as 'La Hediondilla' near the foot of Cerro Potosi. The pool had a maximum depth of , and surface area of , covered by abundant vegetation including ''Ceratophyllum, Najas, Nasturtium,'' and ''Utricularia.'' Sparse clumps of ''Typha'' and ''Scirpus'' were also present in the spring. A large earthen and rock dam enlarged the original pool, and a series of seeps and secondary outflows created distributaries that ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Robert Rush Miller
Robert Rush Miller (April 23, 1916 – February 10, 2003) was an important figure in American ichthyology and Conservation movement, conservation from 1940 to the 1990s. He was born in Colorado Springs, earned his bachelor's degree at University of California, Berkeley in 1938, a master's degree at the University of Michigan in 1943, and a doctorate, Ph.D. at the University of Michigan in 1944. He received tenure at the University of Michigan in 1954. Together with W. L. Minckley, he discovered a new species of platyfish, ''Xiphophorus gordoni'', that they named in honor of Dr Myron Gordon (biologist), Myron Gordon. He served as the ichthyological editor of ''Copeia'' from 1950 to 1955. Fish described * ''Chortiheros wesseli'' R. R. Miller 1996 - Cichlid * ''Cualac tessellatus'' R. R. Miller 1956 - (Checkered Pupfish) * ''Cyprinodon albivelis'' Wendell L. Minckley, W. L. Minckley & R. R. Miller, 2002 (Whitefin pupfish) * ''Cyprinodon alvarezi'' R. R. Miller, 1976 (Potosi pupfis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Catarina Pupfish
The Catarina pupfish (''Megupsilon aporus'') was a diminutive species of fish in the family Cyprinodontidae, first described in 1972. It was endemic to a spring in Nuevo León, Mexico. In an attempt of saving the rapidly declining species, some were brought into captivity in the late 1980s and early 1990s, but it proved very difficult to maintain. In 1994 it became extinct in the wild. Gradually the captive populations also perished. The last male died in 2014 (pictured in inset) and the species became extinct. In addition to its small size, it was characterized by absence of pelvic girdle and pelvic fins, novel male reproductive behavior of jaw-nudging, a darkened dorsal patch, and by having different numbers of chromosomes in male and female fish due to a recent chromosomal fusion event. In 2013, its behavior was described based on very limited field observations of the previous wild population and more detailed observations in aquaria. Extinction The Catarina pupfish is extinc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Freshwater Fish Of Mexico
Fresh water or freshwater is any naturally occurring liquid or frozen water containing low concentrations of dissolved salts and other total dissolved solids. The term excludes seawater and brackish water, but it does include non-salty mineral-rich waters, such as chalybeate springs. Fresh water may encompass frozen and meltwater in ice sheets, ice caps, glaciers, snowfields and icebergs, natural precipitations such as rainfall, snowfall, hail/ sleet and graupel, and surface runoffs that form inland bodies of water such as wetlands, ponds, lakes, rivers, streams, as well as groundwater contained in aquifers, subterranean rivers and lakes. Water is critical to the survival of all living organisms. Many organisms can thrive on salt water, but the great majority of vascular plants and most insects, amphibians, reptiles, mammals and birds need fresh water to survive. Fresh water is the water resource that is of the most and immediate use to humans. Fresh water is not alway ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Endemic Fish Of Mexico
Endemism is the state of a species being found only in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found elsewhere. For example, the Cape sugarbird is found exclusively in southwestern South Africa and is therefore said to be ''endemic'' to that particular part of the world. An endemic species can also be referred to as an ''endemism'' or, in scientific literature, as an ''endemite''. Similarly, many species found in the Western ghats of India are examples of endemism. Endemism is an important concept in conservation biology for measuring biodiversity in a particular place and evaluating the risk of extinction for species. Endemism is also of interest in evolutionary biology, because it provides clues about how changes in the environment cause species to undergo range shifts (potentially expanding their range into a larger area or becomi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fish Described In 1976
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] |
Taxa Named By Robert Rush Miller
In biology, a taxon (back-formation from ''taxonomy''; : taxa) is a group of one or more populations of an organism or organisms seen by taxonomists to form a unit. Although neither is required, a taxon is usually known by a particular name and given a particular ranking, especially if and when it is accepted or becomes established. It is very common, however, for taxonomists to remain at odds over what belongs to a taxon and the criteria used for inclusion, especially in the context of rank-based (" Linnaean") nomenclature (much less so under phylogenetic nomenclature). If a taxon is given a formal scientific name, its use is then governed by one of the nomenclature codes specifying which scientific name is correct for a particular grouping. Initial attempts at classifying and ordering organisms (plants and animals) were presumably set forth in prehistoric times by hunter-gatherers, as suggested by the fairly sophisticated folk taxonomies. Much later, Aristotle, and later still ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cyprinodon
''Cyprinodon'' is a genus of pupfishes found in waters that range from Fresh water, fresh to hypersaline. The genus is primarily found in Mexico, the Caribbean Islands and southern United States (Arizona, California, Florida, Nevada, New Mexico, Oklahoma and Texas), but ''C. variegatus'' occurs as far north as Massachusetts and along the entire Gulf of Mexico coastline, and ''C. dearborni '' and ''C. variegatus'' are found in northern South America.Martin, C. H., and P. C. Wainwright (2013). ''Multiple Fitness Peaks on the Adaptive Landscape Drive Adaptive Radiation in the Wild.'' Science 339(6116): 208-211. Many species have tiny ranges and are highly threatened, in some cases already extinct. ''Cyprinodon'' are small; the largest reaches in length and most other species only reach about half that size. Evolution Based on phylogenetic evidence, ''Cyprinodon'' diverged from its closest relative, the recently extinct ''Catarina pupfish, Megupsilon'', during the Late Miocene, an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Type (biology)
In biology, a type is a particular specimen (or in some cases a group of specimens) of an organism to which the scientific name of that organism is formally associated. In other words, a type is an example that serves to anchor or centralizes the defining features of that particular taxon. In older usage (pre-1900 in botany), a type was a taxon rather than a specimen. A taxon is a scientifically named grouping of organisms with other like organisms, a set that includes some organisms and excludes others, based on a detailed published description (for example a species description) and on the provision of type material, which is usually available to scientists for examination in a major museum research collection, or similar institution. Type specimen According to a precise set of rules laid down in the International Code of Zoological Nomenclature (ICZN) and the ''International Code of Nomenclature for algae, fungi, and plants'' (ICN), the scientific name of every taxon is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Species Description
A species description is a formal scientific description of a newly encountered species, typically articulated through a scientific publication. Its purpose is to provide a clear description of a new species of organism and explain how it differs from species that have been previously described or related species. For a species to be considered valid, a species description must follow established guidelines and naming conventions dictated by relevant nomenclature codes. These include the International Code of Zoological Nomenclature (ICZN) for animals, the International Code of Nomenclature for algae, fungi, and plants (ICN) for plants, and the International Committee on Taxonomy of Viruses (ICTV) for viruses. A species description often includes photographs or other illustrations of type material and information regarding where this material is deposited. The publication in which the species is described gives the new species a formal scientific name. Some 1.9 million ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jose Alvarez Del Villar
Jose is the English transliteration of the Hebrew and Aramaic name ''Yose'', which is etymologically linked to ''Yosef'' or Joseph. Given name Mishnaic and Talmudic periods *Jose ben Abin *Jose ben Akabya *Jose the Galilean *Jose ben Halafta *Jose ben Jochanan *Jose ben Joezer of Zeredah * Jose ben Saul Male *Jose (actor), Indian actor *Jose Balagtas, Filipino film director *Jose Baxter (born 1992), English footballer *Jose Davis (born 1978), American football player *Jose Glover (died 1638), English minister and pioneer of the printing press in the New World *Jose Kattukkaran (born 1950), Indian politician *Jose Kurushinkal, Indian cricket umpire *Jose Kusugak (1950–2011), Inuk politician *Jose Lambert (born 1941), Belgian professor *Jose K. Mani (born 1965), Indian politician *Jose Mugrabi (born 1939), Israeli businessman *Jose Nandhikkara (born 1964), Indian author *Jose Pellissery (1950–2004), Indian film actor *Jose Chacko Periappuram (born 1958), Indian surgeon *Jose P ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Standard Length
Fish measurement is the measuring of individual fish and various parts of fish anatomy, their anatomies, for data used in many areas of ichthyology, including Taxonomy (biology), taxonomy and fishery 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 Glossary of ichthyology#H, hypural plate. This measurement excludes the length of the caudal fin, 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 Actinopterygii, bony fish), while total length measurements are used with Myxini (hagfish), Petromyzontiformes (lampreys) and usually Elasmobranchii (shark ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Largemouth Bass
The largemouth bass (''Micropterus nigricans'') is a carnivorous, freshwater fish, freshwater, ray-finned fish in the Centrarchidae (sunfish) family, native to the eastern United States, eastern and central United States, southeastern Canada and northern Mexico. It is known by a variety of regional names, such as the widemouth bass, ''bigmouth bass'', ''black bass'', ''largie'', Potter's fish, Florida bass or ''Florida largemouth'', ''green bass'', bucketmouth bass, ''green trout'', growler, Gilsdorf bass, Oswego bass, LMB, and southern largemouth and northern largemouth. The largemouth bass, as it is known today, was first described by French naturalist Georges Cuvier in 1828. A recent study concluded that the correct scientific name for the Florida bass is ''Micropterus salmoides'', while the largemouth bass is ''Micropterus nigricans''. It is the largest species of the black bass, with a maximum recorded length of and an unofficial weight of . The largemouth bass is the Lis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
