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Vesper Mouse
Vesper mice are rodents belonging to a genus ''Calomys''. They are widely distributed in South America. Some species are notable as the vectors of Argentinian hemorrhagic fever and Bolivian hemorrhagic fever. The genus was originally named ''Hesperomys'', but was changed to ''Calomys'' since 1962. History ''Hesperomys'' was introduced by George Robert Waterhouse in 1839 for the American rodents with cusps arranged in two series. The name combines the Greek ἑσπερος "west" and μυς "mouse". He considered it possible that species of ''Hesperomys'' would be found in the Old World, but did not doubt that the Americas were their chief abode. He included as species ''Mus bimaculatus'' (='' Calomys laucha''), ''Mus griseo-flavus'' (=''Graomys griseoflavus''), ''Mus Darwinii'' (=''Phyllotis darwini''), ''Mus zanthopygus'' (=''Phyllotis xanthopygus''), ''Mus galapagoensis'' (='' Aegialomys galapagoensis''), ''Symidon hispidum'' (=''Sigmodon hispidus''), ''Mus leucopus'' (=''Per ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Small Vesper Mouse
The small vesper mouse (''Calomys laucha'') is a rodent species from South America. It is found in Argentina, Bolivia, Brazil, Paraguay and Uruguay. It is one of the hosts of hantavirus, causing hantavirus pulmonary syndrome Hantavirus pulmonary syndrome (HPS) is one of two potentially fatal syndromes of zoonotic origin caused by species of hantavirus. These include Black Creek Canal virus (BCCV), New York orthohantavirus (NYV), Monongahela virus (MGLV), ''Sin Nomb ... References Calomys Rodents of South America Mammals of Argentina Mammals of Bolivia Mammals of Brazil Mammals of Paraguay Mammals of Uruguay Mammals described in 1814 {{Calomys-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
South America
South America is a continent entirely in the Western Hemisphere and mostly in the Southern Hemisphere, with a relatively small portion in the Northern Hemisphere at the northern tip of the continent. It can also be described as the southern subregion of a single continent called America. South America is bordered on the west by the Pacific Ocean and on the north and east by the Atlantic Ocean; North America and the Caribbean Sea lie to the northwest. The continent generally includes twelve sovereign states: Argentina, Bolivia, Brazil, Chile, Colombia, Ecuador, Guyana, Paraguay, Peru, Suriname, Uruguay, and Venezuela; two dependent territories: the Falkland Islands and South Georgia and the South Sandwich Islands; and one internal territory: French Guiana. In addition, the ABC islands of the Kingdom of the Netherlands, Ascension Island (dependency of Saint Helena, Ascension and Tristan da Cunha, a British Overseas Territory), Bouvet Island ( dependency of Norway), Pa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scapteromys
''Scapteromys'' is a genus of South American rodents in the tribe Akodontini of family Cricetidae. Three species are known, found in northern Argentina, southern Brazil, Paraguay and Uruguay. They are as follows: * Argentine swamp rat (''Scapteromys aquaticus'') * Plateau swamp rat (''Scapteromys meridionalis'') * Waterhouse's swamp rat (''Scapteromys tumidus'') Species are semiaquatic, living in and near marshes and other bodies of water. They reach a body length of 15 to 20 cm and a tail length of 13–17 cm, and weigh 110-200 g. Fur color is dark gray on top and light gray on the underside. They are primarily crepuscular and nocturnal. Their diet consists mainly of insects; they also consume other invertebrates and plant material. The three species differ in karyotype A karyotype is the general appearance of the complete set of metaphase chromosomes in the cells of a species or in an individual organism, mainly including their sizes, numbers, and shapes. Karyotyp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spencer Fullerton Baird
Spencer Fullerton Baird (; February 3, 1823 – August 19, 1887) was an American naturalist, ornithologist, ichthyologist, Herpetology, herpetologist, and museum curator. Baird was the first curator to be named at the Smithsonian Institution. He eventually served as assistant Secretary of the Smithsonian from 1850 to 1878, and as Secretary from 1878 until 1887. He was dedicated to expanding the natural history collections of the Smithsonian which he increased from 6,000 specimens in 1850 to over 2 million by the time of his death. He published over 1,000 works during his lifetime. Early life and education Spencer Fullerton Baird was born in Reading, Pennsylvania in 1823. His mother was a member of the prominent Philadelphia Biddle family; he was a nephew of Speaker of the Pennsylvania Senate Charles B. Penrose and a first cousin, once removed, of U.S. Senator Boies Penrose and his distinguished brothers, R. A. F. Penrose Jr., Richard, Spencer Penrose, Spencer, and Charles Bingham ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Johann Andreas Wagner
Johann Andreas Wagner (21 March 1797 – 17 December 1861) was a German palaeontologist, zoologist and archaeologist who wrote several important works on palaeontology. Career Wagner was a professor at the University of Munich, and curator of the Zoologische Staatssammlung (State Zoology Collection). He was the author of ''Die Geographische Verbreitung der Säugethiere Dargestellt'' (1844–46). Wagner was a Christian creationist. Pikermi In his travels to the fossil beds of Pikermi, Wagner discovered and described fossil remains of mastodon, '' Dinotherium'', ''Hipparion ''Hipparion'' (Greek, "pony") is an extinct genus of horse that lived in North America, Asia, Europe, and Africa during the Miocene through Pleistocene ~23 Mya—781,000 years ago. It lived in non-forested, grassy plains, shortgrass prairie or ...'', two species of giraffe, antelope and others. His collaboration with Johannes Roth on these fossils became a major textbook in palaeontology, known as ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Woodrat
A pack rat or packrat, also called a woodrat or trade rat, are any species in the North and Central American rodent genus ''Neotoma''. Pack rats have a rat-like appearance, with long tails, large ears, and large, black eyes. Pack rats are noticeably larger than deer mice, harvest mice, and grasshopper mice, and are usually somewhat larger than cotton rats. Species ''Neotoma'' includes three subgenera: * Subgenus ''Neotoma'' ** '' Neotoma albigula'' - white-throated woodrat *** ''Neotoma albigula varia'' - Turner Island woodrat ** '' Neotoma angustapalata'' - Tamaulipan woodrat ** ''Neotoma bryanti'' - Bryant's woodrat *** '' Neotoma bryanti anthonyi'' - Anthony's woodrat † *** '' Neotoma bryanti bunkeri'' - Bunker's woodrat † *** '' Neotoma bryanti martinensis'' - San Martín Island woodrat † ** ''Neotoma chrysomelas'' - Nicaraguan woodrat ** '' Neotoma devia'' - Arizona woodrat ** ''Neotoma findleyi'' - Findley's woodrat † ** '' Neotoma floridana'' - eastern woodrat ( ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Peromyscus Leucopus
The white-footed mouse (''Peromyscus leucopus'') is a rodent native to North America from Ontario, Quebec, Labrador, and the Maritime Provinces (excluding the island of Newfoundland) to the southwestern United States and Mexico. In the Maritimes, its only location is a disjunct population in southern Nova Scotia. It is also known as the woodmouse, particularly in Texas. Description Adults are in length, not counting the tail, which can add another . A young adult weighs . While their maximum lifespan is 96 months, the mean life expectancy for the species is 45.5 months for females and 47.5 for males. In northern climates, the average life expectancy is 12–24 months. The species is similar to ''Peromyscus maniculatus''. White-footed Mouse, Quetico.jpg, In Quetico Provincial Park, Ontario File:Rhus typhina-Peromyscus leucopus-female.jpg, Female on a staghorn sumac Behavior and diet White-footed mice are omnivorous, and eat seeds and insects. They are timid and generally avoid ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sigmodon Hispidus
The hispid cotton rat (''Sigmodon hispidus'') is a rodent species long thought to occur in parts of South America, Central America, and southern North America. However, recent taxonomic revisions, based on mitochondrial DNA sequence data, have split this widely distributed species into three separate species (''S. hispidus'', ''S. toltecus'', and ''S. hirsutus''). The distribution of ''S. hispidus'' ranges from Arizona in the west to Virginia to the east and from the Platte River in Nebraska in the north to, likely, the Rio Grande in the south, where it meets the northern edge of the distribution of '' S. toltecus'' (formerly ''S. h. toltecus''). Adult size is total length ; tail , frequently broken or stubbed; hind foot ; ear ; mass . They have been used as laboratory animals. Taxonomy The currently accepted scientific name for the hispid cotton rat is ''Sigmodon hispidus''. It is a member of the family Cricetidae.(Animal Diversity Web, University of Michigan Museum of Zoology) ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aegialomys Galapagoensis
The Galápagos rice rat (''Aegialomys galapagoensis''), also known as the Galápagos oryzomys, is a species of rodent that is endemic to the Galápagos Islands. Description The Galapagos rice rat is a medium-sized rodent, with a head-body length of , and a tail long. It has very long, soft and dense fur that is grizzled copper-brown above and yellowish-grey on the underparts. The ears are long and covered with dense hair, and the feet have large pads on the soles, with claws up to in length, suggesting that it has little, if any, climbing ability. Distribution and habitat The Galapagos rice rat is found only in the eastern Galapagos. Today, it occurs only on Santa Fé Island, and possibly on Santiago Island. A separate population formerly existed on San Cristóbal Island, and is considered to represent a separate subspecies, but is thought to have been extinct for many decades. Its natural habitat is subtropical or tropical dry shrubland. Biology and behaviour The Galapagos ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phyllotis Xanthopygus
The yellow-rumped leaf-eared mouse (''Phyllotis xanthopygus'') otherwise known as the Patagonian leaf-eared mouse is a species of rodent in the family Cricetidae and order Rodentia. It is the most widespread member of the genus. Description ''Phyllotis xanthopygus'' is a predominantly greyish brown/sand-colored New World mouse that reaches around 55g in its adulthood. Its thick coat is typically lighter on its underside, most prominent posteriorly, exhibiting countershading that is typical for many small mammals as it aids in camouflage from predators. True to its name, the Patagonian leaf-eared mouse has broad triangular ears similar to other leaf-eared members that compose the genus Phyllotis. The pelage of ''Phyllotis xanthopygus'' is known to differ seasonally. This example of phenotypic plasticity contributes to its ability to camouflage in a dynamic, seasonal, environment. Blending in with the vegetation and rocky outcrops is an important characteristic as their primary pre ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phyllotis Darwini
Darwin's leaf-eared mouse (''Phyllotis darwini'') is a species of rodent in the family Cricetidae. It has terrestrial habits and is endemic to coastal central and northern Chile. It is also found in the Atacama Desert The Atacama Desert ( es, Desierto de Atacama) is a desert plateau in South America covering a 1,600 km (990 mi) strip of land on the Pacific coast, west of the Andes Mountains. The Atacama Desert is the driest nonpolar desert in the .... Members of the species have been found in the Llanos de Challe national park of the Atacama desert. As a nocturnal rodent, ''P. darwini'' utilize the varying degrees of moonlight to determine predation risk and will often alter foraging habits in favor of avoiding predators. References Phyllotis Endemic fauna of Chile Mammals of Chile Atacama Desert Mammals described in 1837 Taxonomy articles created by Polbot {{Phyllotis-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Graomys Griseoflavus
The gray leaf-eared mouse (''Graomys griseoflavus'') is a rodent species from South America. It is found in Argentina, Bolivia, Brazil and Paraguay; its habitat includes the Gran Chaco. This is a variable and widely distributed species that can be found in many habitat types. It is considered to be a species complex, and some populations might be considered separate species. Genus ''Graomys ''Graomys'' is a genus of rodent in the family Cricetidae. It contains the following species: * Central leaf-eared mouse (''Graomys chacoensis'') * Pale leaf-eared mouse The pale leaf-eared mouse (''Graomys domorum'') is a species of rodent i ...'' contains species once considered to be part of the complex.Ferro, L. I. and J. J. MartínezMolecular and morphometric evidence validates a Chacoan species of the grey leaf-eared mice genus ''Graomys'' (Rodentia: Cricetidae: Sigmodontinae).''Mammalia'' 73:3 265-71. September 2009. Notes References * Graomys Rodents of South America Ma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
