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Chirostoma
''Chirostoma'' is a genus of Neotropical silversides from the Lerma River basin in Mexico, including lakes Chapala and Pátzcuaro. Fish in the genus collectively go by the common name charal/charales in their native range (a name also used for the related ''Poblana''). They are heavily fished, but several of the species have become threatened due to habitat loss (pollution, water extraction and drought), introduced species and overfishing. Three species are considered extinct: '' C. bartoni'' (disappeared 2006), '' C. charari'' (1957) and '' C. compressum'' (1900). Four others have not been recorded recently and may also be extinct. Appearance and behavior ''Chirostoma'' are generally silvery-white, pale gray-brown or dull yellowish in color, and have a long horizontal line on the side of the body (inconspicuous and more spotty in some species). They vary in size, ranging from species that are less than long to species that can surpass . Despite the differences, there is grea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chirostoma Compressum
''Chirostoma'' is a genus of Neotropical silversides from the Lerma River basin in Mexico, including lakes Chapala and Pátzcuaro. Fish in the genus collectively go by the common name charal/charales in their native range (a name also used for the related ''Poblana''). They are heavily fished, but several of the species have become threatened due to habitat loss (pollution, water extraction and drought), introduced species and overfishing. Three species are considered extinct: '' C. bartoni'' (disappeared 2006), '' C. charari'' (1957) and '' C. compressum'' (1900). Four others have not been recorded recently and may also be extinct. Appearance and behavior ''Chirostoma'' are generally silvery-white, pale gray-brown or dull yellowish in color, and have a long horizontal line on the side of the body (inconspicuous and more spotty in some species). They vary in size, ranging from species that are less than long to species that can surpass . Despite the differences, there is grea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chirostoma Arge
''Chirostoma'' is a genus of Neotropical silversides from the Lerma River basin in Mexico, including lakes Chapala and Pátzcuaro. Fish in the genus collectively go by the common name charal/charales in their native range (a name also used for the related ''Poblana''). They are heavily fished, but several of the species have become threatened due to habitat loss (pollution, water extraction and drought), introduced species and overfishing. Three species are considered extinct: '' C. bartoni'' (disappeared 2006), '' C. charari'' (1957) and '' C. compressum'' (1900). Four others have not been recorded recently and may also be extinct. Appearance and behavior ''Chirostoma'' are generally silvery-white, pale gray-brown or dull yellowish in color, and have a long horizontal line on the side of the body (inconspicuous and more spotty in some species). They vary in size, ranging from species that are less than long to species that can surpass . Despite the differences, there is grea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chirostoma Aculeatum
''Chirostoma'' is a genus of Neotropical silversides from the Lerma River basin in Mexico, including lakes Chapala and Pátzcuaro. Fish in the genus collectively go by the common name charal/charales in their native range (a name also used for the related ''Poblana''). They are heavily fished, but several of the species have become threatened due to habitat loss (pollution, water extraction and drought), introduced species and overfishing. Three species are considered extinct: '' C. bartoni'' (disappeared 2006), '' C. charari'' (1957) and '' C. compressum'' (1900). Four others have not been recorded recently and may also be extinct. Appearance and behavior ''Chirostoma'' are generally silvery-white, pale gray-brown or dull yellowish in color, and have a long horizontal line on the side of the body (inconspicuous and more spotty in some species). They vary in size, ranging from species that are less than long to species that can surpass . Despite the differences, there is grea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chirostoma Charari
''Chirostoma charari'', the least silverside, is a species of neotropical silverside endemic to Mexico. This species has only been found in a spring in the Lake Cuitzeo basin on the Mesa Central of the Mexican Plateau The Central Mexican Plateau, also known as the Mexican Altiplano ( es, Altiplanicie Mexicana), is a large arid-to-semiarid plateau that occupies much of northern and central Mexico. Averaging above sea level, it extends from the US-Mexico border .... It has a longer head and jaw, as well as larger teeth and eyes than other ''Chirostoma'' species. Its status is rated as Critically Endangered by the IUCN, and may possibly be extinct. References charari Freshwater fish of Mexico Fish described in 1945 Fish of North America becoming extinct since 1500 {{Atheriniformes-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chirostoma Bartoni
''Chirostoma bartoni'', the Alberca silverside, is a species of neotropical silverside endemic to the Lerma River basin of Mexico. Typical adult specimens are approximately 7.1 cm in length. The Alberca silverside was found only in the Alberca Caldera, Guanajuato, Mexico and likely became extinct when the caldera temporarily dried up in August 2006. The specific name honours Barton Appler Bean Barton Appler Bean was an American ichthyologist, born May 21, 1860 in Lancaster County, Pennsylvania and died June 16, 1947 in Chemung, New York, after falling from a bridge. He was the brother of the ichthyologist Tarleton Hoffman Bean (1846-1 ... (1860-1947) who was Assistant Curator of Fishes at the U.S. National Museum. References bartoni Freshwater fish of Mexico Taxonomy articles created by Polbot Fish described in 1896 Fish extinctions since 1500 {{Atheriniformes-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lake Chapala
Lake Chapala ( es, Lago de Chapala, ) is Mexico's largest freshwater lake. It lies in the municipalities of Ocotlán, Jalisco, Ocotlán, Chapala, Mexico, Chapala, Jocotepec, Poncitlán, and Jamay (municipality), Jamay, in Jalisco, and in Venustiano Carranza, Michoacán, Venustiano Carranza and Cojumatlán de Régules, in Michoacán. Geography Geographic features It is located at , southeast of Guadalajara, Jalisco, and is situated on the border between the States of Mexico, states of Jalisco and Michoacán, at 1,524 metres (5000 feet) above sea level. Its approximate dimensions are from east to west and averages 12.5 km (7.8 miles) from north to south, and covers an approximate area of . It is a shallow lake, with a mean depth of and a maximum of . It is fed by the Río Lerma, Zula River, Río Zula, Huaracha River, Río Huaracha, and Duero River (Mexico), Río Duero rivers, and drained by the Rio Grande de Santiago. The water then would normally flow northw ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lerma River
The Lerma River ( es, Río Lerma) is Mexico's second longest river. It is a river in west-central Mexico that begins in Mexican Plateau at an altitude over above sea level, and ends where it empties into Lake Chapala, Mexico's largest lake, near Guadalajara, Jalisco. Lake Chapala is the starting point of Río Grande de Santiago, which some treat as a continuation of the Lerma River. In combination, the two are often called the Lerma Santiago River ( es, Río Lerma Santiago). The Lerma River is notorious for its pollution, but the water quality has demonstrated considerable improvement in recent years due mostly to government environmental programs and through massive upgrading projects of sanitation works. Course The Lerma River originates from the Lerma lagoons near Almoloya del Río, on a plateau more than above sea level, and southeast of Toluca. The lagoons receive their water from springs rising from basaltic volcanics that flow down from Monte de Las Cruces. These are lo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Poblana
''Poblana'' is a genus of Neotropical silversides that are endemic to Mexico, with each of the four threatened species restricted to a single Oriental Basin maar lake. They are small fish that do not surpass in standard length. Species FishBase recognizes four species in this genus, although genetic differences between them are very limited and some regard all as subspecies of ''P. alchichica''. ''Poblana'' is sometimes included in ''Chirostoma'' instead of being regarded a separate genus. * '' Poblana alchichica'' F. de Buen, 1945 (Alchichica silverside) * '' Poblana ferdebueni'' Solórzano & Y. López, 1965 (Chignahuapan silverside) * '' Poblana letholepis'' Álvarez, 1950 (La Preciosa silverside) * '' Poblana squamata'' Álvarez Álvarez or Álvares may refer to: People *Álvarez (surname), Spanish surname Places *Alvares (river), a river in northern Spain * Alvares (ski resort), in Iran *Alvares, Iran * Alvares, Portugal *Álvarez, Santa Fe, a town in the province o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
David Starr Jordan
David Starr Jordan (January 19, 1851 – September 19, 1931) was the founding president of Stanford University, serving from 1891 to 1913. He was an ichthyologist during his research career. Prior to serving as president of Stanford University, he had served as president of Indiana University from 1884 to 1891. Starr was also a strong supporter of eugenics, and his published views expressed a fear of "race-degeneration" and asserted that cattle and human beings are "governed by the same laws of selection". He was an antimilitarist since he believed that war killed off the best members of the gene pool, and he initially opposed American involvement in World War I. Early life and career Jordan was born in Gainesville, New York, and grew up on a farm in upstate New York. His parents made the unorthodox decision to educate him at a local girls' high school. His middle name, Starr, does not appear in early census records, and was apparently self-selected; he had begun using ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Neotropical Silversides
The Neotropical silversides are a family, Atherinopsidae, of fishes in the order Atheriniformes. About 112 species in 13 genera are distributed throughout the tropical and temperate waters of the New World, including both marine and freshwater habitats. The familiar grunions and Atlantic silverside The Atlantic silverside (''Menidia menidia''), also known as spearing in the northeastern United States, is a small species of fish from the West Atlantic, ranging from the Gulf of St. Lawrence in Canada to northeastern Florida in the USA. It i ... belong to this family. References * External links beryllina'' Photo and Information at MBL Aquaculture Atherinopsidae Taxa named by Henry Weed Fowler {{Atheriniformes-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lake Pátzcuaro
Lake Pátzcuaro (Spanish: ''Lago de Pátzcuaro'') is a lake in the municipality of Pátzcuaro, Michoacán, Mexico. Lake Pátzcuaro lies in an endorheic basin, which does not drain to the sea. A watershed area of 929 square kilometres drains into the lake, of which 126.4 are the water body. The Lake Pátzcuaro watershed extends 50 kilometres east–west and 33 kilometres from north to south. Lake Pátzcuaro lies at an elevation of 1,920 metres, and is the center of the basin and is surrounded by volcanic mountains with very steep slopes. It has an average depth of 5 metres and a maximum of 11. Its volume is approximately 580 million cubic metres."Descripción de la cuenca", ''Recuperación Ambiental del Lago de Pátzcuaro". Accessed October 18, 2009 The Lake Pátzcuaro basin is of volcanic origin. At times it has been part of an open and continuous hydrological system formed by Lake Cuitzeo, Pátzcuaro and Lake Zirahuén, which drained into the Lerma River. Today, like lakes Cuit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amphipod
Amphipoda is an order of malacostracan crustaceans with no carapace and generally with laterally compressed bodies. Amphipods range in size from and are mostly detritivores or scavengers. There are more than 9,900 amphipod species so far described. They are mostly marine animals, but are found in almost all aquatic environments. Some 1,900 species live in fresh water, and the order also includes the terrestrial sandhoppers such as ''Talitrus saltator''. Etymology and names The name ''Amphipoda'' comes, via New Latin ', from the Greek roots 'on both/all sides' and 'foot'. This contrasts with the related Isopoda, which have a single kind of thoracic leg. Particularly among anglers, amphipods are known as ''freshwater shrimp'', ''scuds'', or ''sideswimmers''. Description Anatomy The body of an amphipod is divided into 13 segments, which can be grouped into a head, a thorax and an abdomen. The head is fused to the thorax, and bears two pairs of antennae and one pair of se ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
