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Central Mudminnow
The central mudminnow (''Umbra limi'') is a small fish in the family Umbridae of the order Esociformes. It is found in central and eastern North America in productive waters. It is fairly tolerant of low oxygen concentration In chemistry, concentration is the abundance of a constituent divided by the total volume of a mixture. Several types of mathematical description can be distinguished: '' mass concentration'', '' molar concentration'', '' number concentration'', ...s and, as a result, it is sometimes the only, or one of a very few, fish species present in waters susceptible to winter or summer kill. Description The central mudminnow lives in slow-moving water around ponds, lakes, and streams in central North America, and ranges in length from 51–102 mm. It burrows tail-first in mud and can tolerate low oxygen levels, allowing it to live in waterways unavailable to other fishes. Its coloration matches this habitat, being brownish above with mottled sides and a pale ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jared Potter Kirtland
Jared Potter Kirtland (November 10, 1793 – December 10, 1877) was a naturalist, malacologist, and politician most active in the U.S. state of Ohio, where he served as a probate judge, and in the Ohio House of Representatives. He was also a physician and co-founder of Western Reserve University's Medical School, as well as what would become the Cleveland Museum of Natural History. The Kirtland Bird Club of Northeast Ohio, founded on September 28, 1940, is named after him. Early life Kirtland was born in Wallingford, Connecticut. His mother was Mary, daughter of Dr. Jared Potter, a famous physician of Wallingford. His father, Turhand Kirtland, was largely interested in the purchases made by the Connecticut Land Company in Ohio, and moved to the Western Reserve in 1803. In the meantime the son remained in Wallingford. When Potter died in 1810, he left a legacy to provide for Jared's medical education at Edinburgh. But the War of 1812 with Great Britain prevented the voyage, and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Umbridae
Umbridae is a family of ray-finned fish in the order Salmoniformes. The single living genus, '' Umbra'', occupies weed-choked freshwater habitats in eastern North America and eastern Europe. While the family traditionally contained the genera ''Umbra'', '' Novumbra'', and '' Dallia'', recent genetic and paleontological research have recovered this grouping as paraphyletic, with ''Novumbra'' and ''Dallia'' being moved to the family Esocidae. Distribution Umbridae contains three extant species, all within the genus ''Umbra'': '' Umbra pygmaea'', '' Umbra limi'', and '' Umbra krameri''. ''U. pygmaea'' can be found across the eastern United States and southeastern Canada. ''U. limi'' ranges throughout the Great Lakes region and Mississippi River basin of North America. ''U. krameri'' can be found in the Danube and Dniester River basins of Europe. ''Umbra ''spp. are most commonly found in the Atlantic coast regions of North America, along the marshy, low-oxygen areas of the Mississ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Esociformes
The Esocoidei () is a small suborder of freshwater Actinopterygii, ray-finned fish, one of two suborders in the order Salmoniformes. It contains two families, Umbridae and Esocidae. The pikes of genus ''Esox'' give the order its name. This order is closely related to the Salmonidae, Salmonoidei, the two comprising the order Salmoniformes. The esociform fishes first appeared in the late Cretaceous — early products of the Euteleost, Euteleostei radiation of that time. They diverged from their sister group Salmonidae, Salmoniformes about 110 million years ago, with the extant species having evolved from a common ancestor that lived about 90 million years ago. Today, they are found in weed-choked freshwater habitats in North America and northern Eurasia. Taxonomy In the past, they were often placed in the order Salmoniformes as the suborder Esocoidei. During the early 21st century, due to their morphological divergence from Salmoniformes, they were instead treated as their own or ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
North America
North America is a continent in the Northern Hemisphere, Northern and Western Hemisphere, Western hemispheres. North America is bordered to the north by the Arctic Ocean, to the east by the Atlantic Ocean, to the southeast by South America and the Caribbean Sea, and to the south and west by the Pacific Ocean. The region includes Middle America (Americas), Middle America (comprising the Caribbean, Central America, and Mexico) and Northern America. North America covers an area of about , representing approximately 16.5% of Earth's land area and 4.8% of its total surface area. It is the third-largest continent by size after Asia and Africa, and the list of continents and continental subregions by population, fourth-largest continent by population after Asia, Africa, and Europe. , North America's population was estimated as over 592 million people in list of sovereign states and dependent territories in North America, 23 independent states, or about 7.5% of the world's popula ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oxygen
Oxygen is a chemical element; it has chemical symbol, symbol O and atomic number 8. It is a member of the chalcogen group (periodic table), group in the periodic table, a highly reactivity (chemistry), reactive nonmetal (chemistry), nonmetal, and a potent oxidizing agent that readily forms oxides with most elements as well as with other chemical compound, compounds. Oxygen is abundance of elements in Earth's crust, the most abundant element in Earth's crust, making up almost half of the Earth's crust in the form of various oxides such as water, carbon dioxide, iron oxides and silicates.Atkins, P.; Jones, L.; Laverman, L. (2016).''Chemical Principles'', 7th edition. Freeman. It is abundance of chemical elements, the third-most abundant element in the universe after hydrogen and helium. At standard temperature and pressure, two oxygen atoms will chemical bond, bind covalent bond, covalently to form dioxygen, a colorless and odorless diatomic gas with the chemical formula ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Concentration
In chemistry, concentration is the abundance of a constituent divided by the total volume of a mixture. Several types of mathematical description can be distinguished: '' mass concentration'', '' molar concentration'', '' number concentration'', and '' volume concentration''. The concentration can refer to any kind of chemical mixture, but most frequently refers to solutes and solvents in solutions. The molar (amount) concentration has variants, such as normal concentration and osmotic concentration. Dilution is reduction of concentration, e.g. by adding solvent to a solution. The verb to concentrate means to increase concentration, the opposite of dilute. Etymology ''Concentration-'', ''concentratio'', action or an act of coming together at a single place, bringing to a common center, was used in post-classical Latin in 1550 or earlier, similar terms attested in Italian (1589), Spanish (1589), English (1606), French (1632). Qualitative description Often in informal, non- ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Umbra (fish)
''Umbra'' is a genus of mudminnows native to Europe and North America. It is the only extant member of the family Umbridae. Phylogenetic evidence suggests the North American and European clades split between the Late Cretaceous or early Paleogene, making this a rather ancient group. Species The currently recognized species in this genus are: * '' Umbra krameri'' Walbaum, 1792 (European mudminnow) * '' Umbra limi'' ( Kirtland, 1840) (central mudminnow) * ''Umbra pygmaea'' ( DeKay, 1842) (eastern mudminnow) The following fossil species are also known: * †'' Umbra euronota'' Schwarzhans ''et al''., 2024 - Middle Miocene of Ukraine otolith">otolith.html" ;"title="nowiki/>otolith">nowiki/>otolithref name=":1"> * † ''Umbra irtyshensis'' Sytchevskaya, 1968 * †'' Umbra irtyshensis">''Umbra irtyshensis'' Sytchevskaya, 1968 * †''Umbra longidorsalis'' Böhme, 2004 - Early Miocene">Umbra longidorsalis">Umbra irtyshensis">''Umbra irtyshensis'' Sytchevskaya, 1968 * †''Umbra lon ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Freshwater Fish Of The United States
Fresh water or freshwater is any naturally occurring liquid or frozen water containing low concentrations of dissolved salt (chemistry), salts and other total dissolved solids. The term excludes seawater and brackish water, but it does include non-salty mineral water, mineral-rich waters, such as chalybeate springs. Fresh water may encompass frozen water, frozen and meltwater in ice sheets, ice caps, glaciers, snowfields and icebergs, natural precipitations such as rainfall, snowfall, hail/ice pellets, 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, subterranea (geography), subterranean subterranean river, rivers and underground lake, 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 sur ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fish Of The Eastern United States
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] |
