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Lepidomeda Mollispinis
The Virgin spinedace (Lepidomeda mollispinis) is a cyprinid fish of the Virgin River, a tributary of the Colorado River in the United States. Description This spinedace is overall silvery in color, with a brassy sheen and a pattern of sooty blotches or speckles on each side. The dorsal fin has eight rays, the first two of which are spiny, the second being longer than the one closer to the frontal area. The anal fin has eight to 10 rays, usually 9. The breeding male is more brightly colored, developing a band on the anal fin, orange to red shades on the paired fins, and a spot of red or gold color at the top of the gill slit. The Virgin spinedace adult is generally in total length. The mouth is less oblique than that of '' L. vittata''. The dorsal fin is lower and rounded, and its depressed length is .Minckley, W.L. 1973. Fishes of Arizona. Arizona Game and Fish Department, Phoenix, AZ. pp. 111-113 The Virgin Spinedace is omnivorous, with a diet of primarily aquatic insects, of ... [...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 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 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. 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'' W. L. Minckley & R. R. Miller, 2002 (Whitefin pupfish) * ''Cyprinodon alvarezi'' R. R. Miller, 1976 (Potosi pupfish) * '' †Cyprinodon arcuatus'' W. L. Minckley & R. R. Miller, 2002 (S ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lepidomeda Vittata
The Little Colorado spinedace (''Lepidomeda vittata'') is a species of ray-finned fish in the family Cyprinidae. It is found only in Arizona in the United States. Description The Little Colorado spinedace is small, generally less than 10 cm in length. The scales are in a lateral line of usually more than 90. The second spine of the dorsal fin is strong. The dorsal fin is moderately high and acute, and its depressed length is 5.2 to 5.8 cm predorsal length. There are eight anal fin rays, and rarely nine. The pharyngeal teeth are in two rows. The Little Colorado spinedace sides are usually silvery, darker above and sometimes white below, rarely with lateral blotches. The upper side and back are a bit of a bluish or lead grey. The breeding Little Colorado Spinedace males have bases of paired fins watery-yellow to orange or red-orange, otherwise however the fins are clear, and parts of the belly are watery-yellow. Range The Little Colorado spinedace is endemic to the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Taxa Named By Robert Rush Miller
In biology, a taxon (back-formation from ''taxonomy''; plural 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. 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 set forth in Carl Linnaeus's system in '' Systema Naturae'', 10th edition (1758), as well as an unpublished work by Bernard and Antoine Laurent de Jussieu. The idea of a unit-based system of biological classification was first made widely available in 1805 in the i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Natural History Of Arizona
Nature, in the broadest sense, is the physical world or universe. "Nature" can refer to the phenomena of the physical world, and also to life in general. The study of nature is a large, if not the only, part of science. Although humans are part of nature, human activity is often understood as a separate category from other natural phenomena. The word ''nature'' is borrowed from the Old French ''nature'' and is derived from the Latin word ''natura'', or "essential qualities, innate disposition", and in ancient times, literally meant "birth". In ancient philosophy, ''natura'' is mostly used as the Latin translation of the Greek word ''physis'' (φύσις), which originally related to the intrinsic characteristics of plants, animals, and other features of the world to develop of their own accord. The concept of nature as a whole, the physical universe, is one of several expansions of the original notion; it began with certain core applications of the word φύσις by pre-So ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fish Of The Western United States
Fish are aquatic, craniate, gill-bearing animals that lack limbs with digits. Included in this definition are the living hagfish, lampreys, and cartilaginous and bony fish as well as various extinct related groups. Approximately 95% of living fish species are ray-finned fish, belonging to the class Actinopterygii, with around 99% of those being teleosts. The earliest organisms that can be classified as fish were soft-bodied chordates that first appeared during the Cambrian period. Although they lacked a true spine, they possessed notochords which allowed them to be more agile than their invertebrate counterparts. Fish would continue to evolve through the Paleozoic era, diversifying into a wide variety of forms. Many fish of the Paleozoic developed external armor that protected them from predators. The first fish with jaws appeared in the Silurian period, after which many (such as sharks) became formidable marine predators rather than just the prey of arthropods. Most f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lepidomeda
''Lepidomeda'' is a genus of cyprinid fish, commonly known as the spinedaces, found in western North America. Of the four known species, one is extinct and two are threatened. They appear to be fairly close to the leatherside chub and the spikedaces (genus ''Meda Meda may refer to: Places * Meda de Mouros, a parish in Tábua Municipality, Portugal * Medas, a parish in Gondomar Municipality, Portugal * Meda-Ela, Sri Lanka * Međa (Leskovac), village in the municipality of Leskovac, Serbia * Meda, Lombardy ...''), but the phylogeny and indeed the validity of the proposed "plagopterin" clade is insufficiently resolved.(Simons & Mayden 1997). Species The genus contains these species: * ''Lepidomeda albivallis'' Robert Rush Miller, R. R. Miller & Carl Leavitt Hubbs, C. L. Hubbs, 1960 (White River spinedace) * ''Lepidomeda aliciae'' (Pierre Louis Jouy, Jouy, 1881) southern leatherside chub * ''Lepidomeda copei''(David Starr Jordan, Jordan & Charles Henry Gilbert, Gilbert, 1881) ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hydropsyche
''Hydropsyche'' is a genus of netspinning caddisflies in the family Hydropsychidae. There are at least 260 described species in ''Hydropsyche''. Taxonomic note: *Type species: Hydropsyche cinerea FJ Pictet (selected by HH Ross, 1944, BullIllinois Nat Hist Surv 23: 86).Merritt, Cummins, Berg. (2008). ''Aquatic Insects of North America''. Kendall/Hunt.Houghton DC, DeWalt RE, Pytel AJ, Brandin CM, Rogers SE, Ruiter DE, Bright E, Hudson PL, Armitage BJ (2018). "Updated checklist of the Michigan (USA) caddisflies, with regional and habitat affinities". ''ZooKeys 730'': 57-74. See also * List of Hydropsyche species This is a list of 266 species in the genus ''Hydropsyche''. ''Hydropsyche'' species * '' Hydropsyche abyssinica'' Kimmins, 1963 * '' Hydropsyche acinoxas'' Malicky, 1981 * '' Hydropsyche acuta'' Martynov, 1909 * '' Hydropsyche adrastos'' Malicky ... References Further reading * External links NCBI Taxonomy Browser, ''Hydropsyche'' Trichoptera genera {{ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Euparyphus
''Euparyphus'' is a genus of flies in the tribe Oxycerini. Species *'' E. albipilosus'' Adams, 1903 *'' E. apicalis'' Coquillett, 1902 *'' E. arizonae'' James, 1973 *'' E. ater'' James, 1973 *'' E. bistriatus'' Williston, 1896 *'' E. brasiliensis'' Lindner, 1949 *'' E. brevicornis'' Loew, 1866 *'' E. carbonarius'' Giglio-Tos, 1891 *'' E. cataractus'' Quist, 1973 *'' E. cinctus'' Osten Sacken, 1886 *'' E. elegans'' ( Wiedemann, 1830) *'' E. elongatulus'' Williston, 1900 *'' E. facialis'' James, 1973 *'' E. hamifer'' James, 1940 *'' E. lagunae'' Cole, 1912 *'' E. limbrocutris'' Adams, 1903 *'' E. monensis'' James, 1973 *'' E. mutabilis'' Adams, 1903 *'' E. nebulosus'' James, 1973 *'' E. ornatus'' Williston, 1885 *'' E. pardalinus'' James, 1936 *'' E. patagius'' Quist, 1973 *'' E. peruvianus'' Lindner, 1941 *'' E. proxipalus'' Quist, 1973 *'' E. pygmaea'' James, 1973 *'' E. rothi'' James, 1973 *'' E. sabroskyi'' James, 1936 *'' E. stigmaticalis'' Loew, 1866 *'' E. tricolo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aquatic Insect
Aquatic insects or water insects live some portion of their life cycle in the water. They feed in the same ways as other insects. Some ''diving'' insects, such as predatory diving beetles, can hunt for food underwater where land-living insects cannot compete. Breathing One problem that aquatic insects must overcome is how to get oxygen while they are under water. Almost all animals require a source of oxygen to live. Insects draw air into their bodies through spiracles, holes found along the sides of the abdomen. These spiracles are connected to tracheal tubes where oxygen can be absorbed. All aquatic insects have become adapted to their environment with the specialization of these structures ;Aquatic adaptations # Simple diffusion over a relatively thin integument # Temporary use of an air bubble # Extraction of oxygen from water using a plastron or blood gill # Storage of oxygen in hemoglobin molecules in hemolymph # Taking oxygen from surface via breathing tubes ( siph ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gill Slit
Gill slits are individual openings to gills, i.e., multiple gill arches, which lack a single outer cover. Such gills are characteristic of cartilaginous fish such as sharks and rays, as well as deep-branching vertebrates such as lampreys. In contrast, bony fishes have a single outer bony gill covering called an operculum. Most sharks and rays have five pairs of gill slits, but a few species have 6 or 7 pairs. Shark gill slits lie in a row behind the head. The anterior edge of a gill slit is motile, moving outward to allow water to exit, but closing to prevent reverse flow. A modified slit, called a spiracle, lies just behind the eye, which assists the shark with taking in water during respiration and plays a major role in bottom–dwelling sharks. Spiracles are reduced or missing in active pelagic sharks. While the shark is moving, water passes through the mouth and over the gills in a process known as "ram ventilation". While at rest, most sharks pump water over their gills ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carl Leavitt Hubbs
Carl Leavitt Hubbs (October 19, 1894 – June 30, 1979) was an American ichthyologist. Biography Youth He was born in Williams, Arizona. He was the son of Charles Leavitt and Elizabeth (née Goss) Hubbs. His father had a wide variety of jobs (farmer, iron mine owner, newspaper owner). The family moved several times before settling in San Diego where he got his first taste of natural history. After his parents divorced in 1907, he lived with his mother, who opened a private school in Redondo Beach, California. His maternal grandmother Jane Goble Goss, one of the first female doctors, showed Hubbs how to harvest shellfish and other sea creatures. One of his teachers, impressed by Hubbs's abilities in science, recommended that he study chemistry at the University of Berkeley. The family moved once more to Los Angeles. In Los Angeles, George Bliss Culver, one of the many volunteers of David Starr Jordan, encouraged Hubbs to abandon his study of birds and instead to study fish ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 seen in sharks. Apart from the tail or caudal fin, fish fins have no direct connection with the spine and are supported only by muscles. Their principal function is to help the fish swim. Fins located in different places on the fish serve different purposes such as moving forward, turning, keeping an upright position or stopping. Most fish use fins when swimming, flying fish use pectoral fins for gliding, and frogfish use them for crawling. Fins can also be used for other purposes; male sharks and mosquitofish use a modified fin to deliver sperm, thresher sharks use their caudal fin to stun prey, reef stonefish have spines in their dorsal fins that inject venom, anglerfish use the first spine of their dorsal fin like a fishing rod to lu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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