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Bluenose Shiner
The bluenose shiner (''Pteronotropis welaka'') is a species of freshwater fish in the family Cyprinidae. It is found only in the United States, mostly in Florida and parts of Alabama and Georgia; its habitat is deep, slow-moving coastal creeks and small to medium rivers and prefers deep pools than shallow areas. It is found in Pearl River, Apalachicola River and St. Johns River but it is apparently not found in Escatawpa River and Perdido River. It is known to have a fragmented population and so has a spotty distribution in Chipola River, Choctawhatchee River, Yellow River, Conecuh River, Alabama River and Tombigbee River. The population is very poorly known with it being rare in the western panhandle of Florida, decline from the past 10 years in Mississippi and "ever decreasing" in Alabama. In 2013, the conservation status was changed from Data Deficient A data deficient (DD) species is one which has been categorized by the International Union for Conservation of N ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Barton Warren Evermann
Barton Warren Evermann (October 24, 1853 – September 27, 1932) was an American ichthyologist. Early life and education Evermann was born in Monroe County, Iowa in 1853. His family moved to Indiana while he was still a child and it was there that he grew up, completed his education, and married. Evermann graduated from Indiana University in 1886. Career For 10 years, he served as teacher and superintendent of schools in Indiana and California. While teaching in Carroll County, Indiana Evermann met fellow teacher Meadie Hawkins. They married on October 24, 1875 and had a son, Toxaway Bronte (born 1879) and a daughter, Edith (born). He was professor of biology at the Indiana State University in Terre Haute from 1886 to 1891. He lectured at Stanford University in 1893–1894, at Cornell University in 1900–1903, and at Yale University in 1903–1906. In the early 20th century, as director of the California Academy of Sciences in San Francisco, he promoted resear ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alabama River
The Alabama River, in the U.S. state of Alabama, is formed by the Tallapoosa and Coosa rivers, which unite about north of Montgomery, near the town of Wetumpka. The river flows west to Selma, then southwest until, about from Mobile, it unites with the Tombigbee, forming the Mobile and Tensaw rivers, which discharge into Mobile Bay. Description The run of the Alabama is highly meandering. Its width varies from , and its depth from . Its length as measured by the United States Geological Survey is ,U.S. Geological Survey. National Hydrography Dataset high-resolution flowline dataThe National Map, accessed April 27, 2011 and by steamboat measurement, . The river crosses the richest agricultural and timber districts of the state. Railways connect it with the mineral regions of north-central Alabama. After the Coosa and Tallapoosa rivers, the principal tributary of the Alabama is the Cahaba River, which is about long and joins the Alabama River about below Selma. The Ala ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fish Of The 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 fis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Taxa Named By Barton Warren Evermann
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 intro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fish Described In 1898
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 fis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pteronotropis
''Pteronotropis'' is a genus of cyprinid fish endemism, endemic to the United States. Characteristics The genus is characterized by a broad dark blue stripe along the side. The genus has large anal and dorsal fins, as well as a compressed body. Species There are currently 9 recognized species in this genus: * ''Pteronotropis euryzonus'' (Royal Dallas Suttkus, Suttkus, 1955) (Broadstripe shiner) * ''Pteronotropis grandipinnis'' (David Starr Jordan, D. S. Jordan, 1877) (Apalachee shiner) * ''Pteronotropis hubbsi'' (Reeve Maclaren Bailey, R. M. Bailey & Henry W. Robison, H. W. Robison, 1978) (Bluehead shiner) * ''Pteronotropis hypselopterus'' (Albert Günther, Günther, 1868) (Sailfin shiner) * ''Pteronotropis merlini'' (Royal Dallas Suttkus, Suttkus & Maurice F. Mettee, Mettee, 2001) (Orangetail shiner) * ''Pteronotropis metallicus'' (David Starr Jordan, D. S. Jordan & Seth Eugene Meek, Meek, 1884) (Metallic shiner) * ''Pteronotropis signipinnis'' (Reeve Maclaren Bailey, R. M. Ba ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vulnerable Species
A vulnerable species is a species which has been Conservation status, categorized by the International Union for Conservation of Nature as being threatened species, threatened with extinction unless the circumstances that are threatened species, threatening its survival and reproduction improve. Vulnerability is mainly caused by habitat loss or destruction of the species' home. Vulnerable habitat or species are monitored and can become increasingly threatened. Some species listed as "vulnerable" may be common in captivity (animal), captivity, an example being the military macaw. There are currently 5196 animals and 6789 plants classified as Vulnerable, compared with 1998 levels of 2815 and 3222, respectively. Practices such as cryoconservation of animal genetic resources have been enforced in efforts to conserve vulnerable breeds of livestock specifically. Criteria The International Union for Conservation of Nature uses several criteria to enter species in this category. A tax ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Data Deficient
A data deficient (DD) species is one which has been categorized by the International Union for Conservation of Nature (IUCN) as offering insufficient information for a proper assessment of conservation status to be made. This does not necessarily indicate that the species has not been extensively studied; but it does indicate that little or no information is available on the abundance and distribution of the species. The IUCN recommends that care be taken to avoid classing species as "data deficient" when the absence of records may indicate dangerously low abundance: "If the range of a taxon is suspected to be relatively circumscribed, if a considerable period of time has elapsed since the last record of the taxon, threatened status may well be justified""The Categories," in IUCN (1983). (see also precautionary principle). See also * IUCN Red List data deficient species * List of data deficient amphibians * IUCN Red List data deficient species (Annelida) * List of data deficien ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mississippi
Mississippi () is a state in the Southeastern region of the United States, bordered to the north by Tennessee; to the east by Alabama; to the south by the Gulf of Mexico; to the southwest by Louisiana; and to the northwest by Arkansas. Mississippi's western boundary is largely defined by the Mississippi River. Mississippi is the 32nd largest and 35th-most populous of the 50 U.S. states and has the lowest per-capita income in the United States. Jackson is both the state's capital and largest city. Greater Jackson is the state's most populous metropolitan area, with a population of 591,978 in 2020. On December 10, 1817, Mississippi became the 20th state admitted to the Union. By 1860, Mississippi was the nation's top cotton-producing state and slaves accounted for 55% of the state population. Mississippi declared its secession from the Union on January 9, 1861, and was one of the seven original Confederate States, which constituted the largest slaveholding states in t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tombigbee River
The Tombigbee River is a tributary of the Mobile River, approximately 200 mi (325 km) long, in the U.S. states of Mississippi and Alabama. Together with the Alabama, it merges to form the short Mobile River before the latter empties into Mobile Bay on the Gulf of Mexico. The Tombigbee watershed encompasses much of the rural coastal plain of western Alabama and northeastern Mississippi, flowing generally southward. The river provides one of the principal routes of commercial navigation in the southern United States, as it is navigable along much of its length through locks and connected in its upper reaches to the Tennessee River via the Tennessee-Tombigbee Waterway. The name "Tombigbee" comes from Choctaw ''/itumbi ikbi/'', meaning "box maker, coffin maker", from ''/itumbi/'', "box, coffin", and ''/ikbi/'', "maker". The river formed the eastern boundary of the historical Choctaw lands, from the 17th century when they coalesced as a people, to the forced Indian Removal b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Conecuh River
The Conecuh River and Escambia River constitute a single river in Alabama and Florida in the United States. The Conecuh River rises near Union Springs in the state and flows in a general southwesterly direction into Florida near Century. The river's name changes from the Conecuh to the Escambia at the junction of Escambia Creek, downstream from the Florida-Alabama line. After this point, the Escambia River flows south to Escambia Bay, an arm of Pensacola Bay. The river is dredged in the lower course. See also * List of Alabama rivers * List of Florida rivers * South Atlantic-Gulf Water Resource Region South is one of the cardinal directions or compass points. The direction is the opposite of north and is perpendicular to both east and west. Etymology The word ''south'' comes from Old English ''sūþ'', from earlier Proto-Germanic ''*sunþaz ... References External links `* Rivers of Florida Rivers of Alabama Bodies of water of Escambia County, Florida Bo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Freshwater Fish
Freshwater fish are those that spend some or all of their lives in fresh water, such as rivers and lakes, with a salinity of less than 1.05%. These environments differ from marine conditions in many ways, especially the difference in levels of salinity. To survive fresh water, the fish need a range of physiology, physiological adaptations. 41.24% of all known species of fish are found in fresh water. This is primarily due to the rapid speciation that the scattered habitats make possible. When dealing with ponds and lakes, one might use the same basic models of speciation as when studying island biogeography. Physiology Freshwater fish differ physiologically from salt water fish in several respects. Their gills must be able to diffuse dissolved gases while keeping the salts in the body fluids inside. Their scales reduce water diffusion through the skin: freshwater fish that have lost too many scales will die. They also have well developed kidneys to reclaim salts from body flui ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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