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Percina Maculata
''Percina maculata'', the blackside darter, is a species of freshwater ray-finned fish, a darter from the subfamily Etheostomatinae, part of the family Percidae, which also contains the perches, ruffes and pikeperches. It is a widespread inhabitant of streams and rivers in the Mississippi River watershed. Like other darters it prefers rocky riffles and sandy runs, but is tolerant of pools and still water as well. It is one of the 324 fish species found in Tennessee. Physical characteristics The Blackside darter is easily distinguishable by its olive coloration. The Blackside darter tends to have darker colors, primarily dark browns, olives and blacks, with occasional white parts. A prominent feature on the fish is a strip along the sides made up of 6–9 black spots. Black spots can also be found below the eyes and on the caudal fin. On average Blacksides are around two or three inches in length but have the potential for sizes of 4 inches. The Blackside darter has two dors ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Charles Frédéric Girard
Charles Frédéric Girard (; 8 March 1822 – 29 January 1895) was a French biologist specializing in ichthyology and herpetology. Biography Girard was born on 8 March 1822 in Mulhouse, France. He studied at the College of Neuchâtel, Switzerland, as a student of Louis Agassiz. In 1847, he accompanied Agassiz as his assistant to Harvard University. Three years later, Spencer Fullerton Baird called him to the Smithsonian Institution to work on its growing collection of North American reptiles, amphibians and fishes. He worked at the museum for the next ten years and published numerous papers, many in collaboration with Baird. In 1854, he was naturalized as a U.S. citizen. Besides his work at the Smithsonian, he managed to earn an M.D. from Georgetown University in Washington, D.C. in 1856. In 1859 he returned to France and was awarded the Cuvier Prize by the Institute of France for his work on the North American reptiles and fishes two years later. When the American Civil Wa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anterior
Standard anatomical terms of location are used to describe unambiguously the anatomy of humans and other animals. The terms, typically derived from Latin or Greek roots, describe something in its standard anatomical position. This position provides a definition of what is at the front ("anterior"), behind ("posterior") and so on. As part of defining and describing terms, the body is described through the use of anatomical planes and axes. The meaning of terms that are used can change depending on whether a vertebrate is a biped or a quadruped, due to the difference in the neuraxis, or if an invertebrate is a non-bilaterian. A non-bilaterian has no anterior or posterior surface for example but can still have a descriptor used such as proximal or distal in relation to a body part that is nearest to, or furthest from its middle. International organisations have determined vocabularies that are often used as standards for subdisciplines of anatomy. For example, '' Termin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Percina
''Percina'' is a genus of small freshwater ray-finned fish belonging to the subfamily Etheostomatinae, which is part of the family Percidae. The Percidae family also includes the perches, ruffes and pikeperches from North America. Along with similar fishes in other genera, members of ''Percina'' are commonly known as " darters". More specifically, the genus as a whole is known as roughbelly darters, while certain species of ''Percina'' displaying vertical bars on their flanks are called logperches. Species There are currently 49 recognized species in this genus: * '' Percina antesella'' J. D. Williams & Etnier, 1978 (Amber darter) * '' Percina apristis'' C. L. Hubbs & Hubbs, 1954 (Guadalupe darter) * '' Percina aurantiaca'' Cope, 1868 (Tangerine darter) * '' Percina aurolineata'' Suttkus & Ramsey, 1967 (Goldline darter) * '' Percina aurora'' Suttkus & B. A. Thompson, 1994 (Pearl darter) * '' Percina austroperca'' B. A. Thompson, 1995 (Southern logperch) * '' Percina bi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diminutive
A diminutive is a word obtained by modifying a root word to convey a slighter degree of its root meaning, either to convey the smallness of the object or quality named, or to convey a sense of intimacy or endearment, and sometimes to belittle something or someone. A ( abbreviated ) is a word-formation device used to express such meanings. A is a diminutive form with two diminutive suffixes rather than one. Purpose Diminutives are often employed as nicknames and pet names when speaking to small children and when expressing extreme tenderness and intimacy to an adult. The opposite of the diminutive form is the augmentative. In some contexts, diminutives are also employed in a pejorative sense to denote that someone or something is weak or childish. For example, one of the last Western Roman emperors was Romulus Augustus, but his name was diminutivized to "Romulus Augustulus" to express his powerlessness. Formation In many languages, diminutives are word forms that ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Latin Language
Latin ( or ) is a classical language belonging to the Italic languages, Italic branch of the Indo-European languages. Latin was originally spoken by the Latins (Italic tribe), Latins in Latium (now known as Lazio), the lower Tiber area around Rome, Italy. Through the expansion of the Roman Republic, it became the dominant language in the Italian Peninsula and subsequently throughout the Roman Empire. It has greatly influenced many languages, Latin influence in English, including English, having contributed List of Latin words with English derivatives, many words to the English lexicon, particularly after the Christianity in Anglo-Saxon England, Christianization of the Anglo-Saxons and the Norman Conquest. Latin Root (linguistics), roots appear frequently in the technical vocabulary used by fields such as theology, List of Latin and Greek words commonly used in systematic names, the sciences, List of medical roots, suffixes and prefixes, medicine, and List of Latin legal terms ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mayflies
Mayflies (also known as shadflies or fishflies in Canada and the upper Midwestern United States, as Canadian soldiers in the American Great Lakes region, and as up-winged flies in the United Kingdom) are aquatic insects belonging to the order (biology), order Ephemeroptera. This order is part of an ancient group of insects termed the Palaeoptera, which also contains dragonflies and damselflies. Over 3,000 species of mayfly are known worldwide, grouped into over 400 genera in 42 family (biology), families. Mayflies have ancestral traits that were probably present in the first flying insects, such as long tails and Insect wing, wings that do not fold flat over the insect morphology#Abdomen, abdomen. Their immature stages are aquatic fresh water forms (called "naiads" or "nymph (biology), nymphs"), whose presence indicates a clean, unpolluted and highly oxygenated aquatic environment. They are unique among insect orders in having a fully winged terrestrial preadult stage, the sub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Calcasieu River
The Calcasieu River ( ; ) is a river on the Gulf Coast of the United States, Gulf Coast in southwestern Louisiana. Approximately long,U.S. Geological Survey. National Hydrography Dataset high-resolution flowline dataThe National Map, accessed June 20, 2011 it drains a largely rural area of forests and bayou country, meandering southward to the Gulf of Mexico. The name "Calcasieu" most likely comes through French language, French from the Atakapa language ('Crying Eagle'), the name of a local Atakapa leader. Course The Calcasieu rises in Vernon Parish, Louisiana, Vernon Parish, north of Leesville, Louisiana, Leesville, and flows initially southeast, passing through the Kisatchie National Forest southwest of Alexandria, Louisiana, Alexandria. It then turns southwest, flowing past Oakdale, Louisiana, Oakdale and Lake Charles, Louisiana, Lake Charles, the largest city on the river. It enters the north end of the brackish Calcasieu Lake, an estuary on the Gulf of Mexico approximate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mobile Bay
Mobile Bay ( ) is a shallow inlet of the Gulf of Mexico, lying within the state of Alabama in the United States. Its mouth is formed by the Fort Morgan Peninsula on the eastern side and Dauphin Island, a barrier island on the western side. The Mobile River and Tensaw River empty into the northern end of the bay, making it an estuary. Several smaller rivers also empty into the bay: Dog River, Deer River, and Fowl River on the western side of the bay, and Fish River on the eastern side. Mobile Bay is the fourth-largest estuary in the United States with a discharge of of water per second. Annually, and often several times during the summer months, the fish and crustaceans will swarm the shallow coastline and shore of the bay. This event, appropriately named a jubilee, draws a large crowd because of the abundance of fresh, easily caught seafood. Mobile Bay is in area. It is long by a maximum width of . The deepest areas of the bay are located within the shipping channel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hudson Bay
Hudson Bay, sometimes called Hudson's Bay (usually historically), is a large body of Saline water, saltwater in northeastern Canada with a surface area of . It is located north of Ontario, west of Quebec, northeast of Manitoba, and southeast of Nunavut, but politically entirely part of Nunavut. It is an inland sea, inland List of seas on Earth#Marginal seas by ocean, marginal sea of the Arctic Ocean. The Hudson Strait provides a connection between the Labrador Sea and the Atlantic Ocean in the northeast, while the Foxe Channel connects Hudson Bay with the Arctic Ocean in the north. The Hudson Bay drainage basin drains a very large area, about , that includes parts of southeastern Nunavut, Alberta, Saskatchewan, Ontario, Quebec, all of Manitoba, and parts of the U.S. states of North Dakota, South Dakota, Minnesota, and Montana. Hudson Bay's southern arm is called James Bay. The East Cree, Eastern Cree name for Hudson and James Bay is (southern dialect) or (northern dialect), m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Percina Maculata-distribution
''Percina'' is a genus of small freshwater ray-finned fish belonging to the subfamily Etheostomatinae, which is part of the family Percidae. The Percidae family also includes the perches, ruffes and pikeperches from North America. Along with similar fishes in other genera, members of ''Percina'' are commonly known as "darters". More specifically, the genus as a whole is known as roughbelly darters, while certain species of ''Percina'' displaying vertical bars on their flanks are called logperches. Species There are currently 49 recognized species in this genus: * ''Percina antesella'' J. D. Williams & Etnier, 1978 (Amber darter) * ''Percina apristis'' C. L. Hubbs & Hubbs, 1954 (Guadalupe darter) * ''Percina aurantiaca'' Cope, 1868 (Tangerine darter) * ''Percina aurolineata'' Suttkus & Ramsey, 1967 (Goldline darter) * ''Percina aurora'' Suttkus & B. A. Thompson, 1994 (Pearl darter) * ''Percina austroperca'' B. A. Thompson, 1995 (Southern logperch) * ''Percina bimaculata'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Caudal Fin
Fins are moving appendages protruding from the body of fish that interact with water to generate thrust and help the fish swim. Apart from the tail or caudal fin, fish fins have no direct connection with the back bone and are supported only by muscles. Fish fins are distinctive anatomical features with varying structures among different clades: in ray-finned fish (Actinopterygii), fins are mainly composed of bony spines or rays covered by a thin stretch of scaleless skin; in lobe-finned fish (Sarcopterygii) such as coelacanths and lungfish, fins are short rays based around a muscular central bud supported by jointed bones; in cartilaginous fish (Chondrichthyes) and jawless fish (Agnatha), fins are fleshy " flippers" supported by a cartilaginous skeleton. Fins at different locations of the fish body serve different purposes, and are divided into two groups: the midsagittal ''unpaired fins'' and the more laterally located ''paired fins''. Unpaired fins are predominan ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ray-finned Fish
Actinopterygii (; ), members of which are known as ray-finned fish or actinopterygians, is a class of bony fish that comprise over 50% of living vertebrate species. They are so called because of their lightly built fins made of webbings of skin supported by radially extended thin bony spines called '' lepidotrichia'', as opposed to the bulkier, fleshy lobed fins of the sister clade Sarcopterygii (lobe-finned fish). Resembling folding fans, the actinopterygian fins can easily change shape and wetted area, providing superior thrust-to-weight ratios per movement compared to sarcopterygian and chondrichthyian fins. The fin rays attach directly to the proximal or basal skeletal elements, the radials, which represent the articulation between these fins and the internal skeleton (e.g., pelvic and pectoral girdles). The vast majority of actinopterygians are teleosts. By species count, they dominate the subphylum Vertebrata, and constitute nearly 99% of the over 30,000 extant ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
