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Torrent Salamander
The torrent salamanders or Cascade salamanders are a family of salamanders (Rhyacotritonidae) with only one genus, ''Rhyacotriton''. The torrent salamanders are endemic to the United States in the Pacific Northwest (including northwestern California). Species The genus ''Rhyacotriton'' includes four species: *Cascade torrent salamander (''R. cascadae'') *Columbia torrent salamander (''R. kezeri'') * Olympic torrent salamander (''R. olympicus'') * Southern torrent salamander (''R. variegatus'') Taxonomy Originally the genus ''Rhyacotriton'' was placed in the family Ambystomatidae, later in the family Dicamptodontidae The Pacific giant salamanders (frequently stylized as Giant Pacific Salamanders or GPS) are members of the genus ''Dicamptodon''. They are large salamanders endemic to the Pacific Northwest in North America. They are included in the family Ambyst ..., and finally in 1992 it was placed into a family of its own. At the same time the only species ''Rhyacotriton olym ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhyacotriton Variegatus
The southern torrent salamander (''Rhyacotriton variegatus'') is a member of the salamander family Rhyacotritonidae. This species of torrent salamander is found the farthest south in the region. It is a small salamander endemic to the Pacific Northwest from Northern California to Northern Oregon. It is one of four species of ''Rhyacotriton'', along with '' R. cascadae'', '' R. kezeri'' and '' R. olympicus''. All species of Rhyacotriton are small, with their body lengths being less than 5 inches. The species reproduces annually, with an extended courtship and egg-laying period. The time it takes from oviposition to reach sexual maturity ranges from five to eight years, making the generation interval rather long. The larval stage, from hatching to metamorphosis, lasts 2.0-2.5 yr, with females requiring another 1.5–2.0 yr until they can first breed. They reach sexual maturity 1.0-1.5 yr after metamorphosis which occurs between 4.5 and 5.0 yr. This species feeds on small insects ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Emmett Reid Dunn
Emmett Reid Dunn (November 21, 1894 in Alexandria, Virginia – February 13, 1956) was an American Herpetology, herpetologist noted for his work in Panama and for studies of salamanders in the Eastern United States. Biography He attended Haverford College as an undergraduate and received his PhD from Harvard University. After receiving his PhD, he taught at Smith College. He left Smith to study on a Guggenheim Fellowship, following which he became a professor of biology at Haverford College. He was also curator of reptiles and amphibians at the Academy of Natural Sciences, Philadelphia. He served as editor of ''Copeia'' from 1924 to 1929. Eponyms A number of reptiles were named in honor of Dunn, both species (binomials)species:Bo Beolens, Beolens, Bo; species:Michael Watkins, Watkins, Michael; Grayson, Michael (2011). ''The Eponym Dictionary of Reptiles''. Baltimore: Johns Hopkins University Press. xiii + 296 pp. . ("Dunn", pp. 77-78). and subspecies (trinomials), including t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhyacotriton Cascadae
The Cascade torrent salamander (''Rhyacotriton cascadae'') is a species of salamander in the family Rhyacotritonidae. It is endemic to the Pacific Northwest in the United States where it is found from Skamania County in Washington south to Lane County in Oregon on the west slope of the Cascade Mountains. Its natural habitats are temperate forests, rivers, and freshwater springs. It is threatened by habitat loss Habitat destruction (also termed habitat loss and habitat reduction) is the process by which a natural habitat becomes incapable of supporting its native species. The organisms that previously inhabited the site are displaced or dead, thereby .... These salamanders are typically found under rocks and fallen logs. As far as movement, cascade torrent salamander can stay in a small area over very long periods. They also tend to move parallel to the streams they live by. Living by the stream creates a wide range of general lifespan because the salamanders can die from ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhyacotriton Kezeri
The Columbia torrent salamander (''Rhyacotriton kezeri'') is a species of salamander in the family Rhyacotritonidae, endemic to the Pacific Northwest in the United States. It is found in the coastal areas of Washington to northwestern Oregon. Its natural habitats are temperate forests, rivers, and freshwater springs. It is a small salamander (up to 10 cm total length) that lives in clear, cold, mountain streams. It is threatened by habitat loss Habitat destruction (also termed habitat loss and habitat reduction) is the process by which a natural habitat becomes incapable of supporting its native species. The organisms that previously inhabited the site are displaced or dead, thereby .... Due to their egg disposition being in enigmatic and obscure locations, there aren't many clear patterns as to where this species of salamander lays their eggs. Therefore, leading to inconclusive results on their reproductive ecology. References Rhyacotriton Amphibians of the Uni ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhyacotriton Olympicus
The Olympic torrent salamander (''Rhyacotriton olympicus'') is a species of salamander in the family Rhyacotritonidae. This is a small salamander (up to 10 cm total length) that lives in clear, cold, mountain streams. It is medium to dark brown and may have a few small light spots on the sides and small dark spots on the tail; it is bright yellow on the belly, usually with some dark spots. Torrent salamanders typically have short snouts and relatively large eyes. As in other torrent salamanders, adult males have square-edged lobes behind the cloaca. These salamanders live at the edges of clear, cold, mountain streams; they can be abundant under gravel at stream edges and in the spray zones of waterfalls. During rainy seasons, they are occasionally found under objects on land away from streams. Its natural habitats are temperate forests, rivers, and freshwater springs. It is threatened by habitat loss Habitat destruction (also termed habitat loss and habitat reduction) i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Family (biology)
Family ( la, familia, plural ') is one of the eight major hierarchical taxonomic ranks in Linnaean taxonomy. It is classified between order and genus. A family may be divided into subfamilies, which are intermediate ranks between the ranks of family and genus. The official family names are Latin in origin; however, popular names are often used: for example, walnut trees and hickory trees belong to the family Juglandaceae, but that family is commonly referred to as the "walnut family". What belongs to a family—or if a described family should be recognized at all—are proposed and determined by practicing taxonomists. There are no hard rules for describing or recognizing a family, but in plants, they can be characterized on the basis of both vegetative and reproductive features of plant species. Taxonomists often take different positions about descriptions, and there may be no broad consensus across the scientific community for some time. The publishing of new data and opini ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Monotypic
In biology, a monotypic taxon is a taxonomic group (taxon) that contains only one immediately subordinate taxon. A monotypic species is one that does not include subspecies or smaller, infraspecific taxa. In the case of genera, the term "unispecific" or "monospecific" is sometimes preferred. In botanical nomenclature, a monotypic genus is a genus in the special case where a genus and a single species are simultaneously described. In contrast, an oligotypic taxon contains more than one but only a very few subordinate taxa. Examples Just as the term ''monotypic'' is used to describe a taxon including only one subdivision, the contained taxon can also be referred to as monotypic within the higher-level taxon, e.g. a genus monotypic within a family. Some examples of monotypic groups are: Plants * In the order Amborellales, there is only one family, Amborellaceae and there is only one genus, '' Amborella'', and in this genus there is only one species, namely ''Amborella trichopoda. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Endemism
Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found elsewhere. For example, the Cape sugarbird is found exclusively in southwestern South Africa and is therefore said to be ''endemic'' to that particular part of the world. An endemic species can be also be referred to as an ''endemism'' or in scientific literature as an ''endemite''. For example '' Cytisus aeolicus'' is an endemite of the Italian flora. '' Adzharia renschi'' was once believed to be an endemite of the Caucasus, but it was later discovered to be a non-indigenous species from South America belonging to a different genus. The extreme opposite of an endemic species is one with a cosmopolitan distribution, having a global or widespread range. A rare alternative term for a species that is endemic is "precinctive", which applies to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pacific Northwest
The Pacific Northwest (sometimes Cascadia, or simply abbreviated as PNW) is a geographic region in western North America bounded by its coastal waters of the Pacific Ocean to the west and, loosely, by the Rocky Mountains to the east. Though no official boundary exists, the most common conception includes the U.S. states of Oregon, Washington (state), Washington, and Idaho, and the Canadian province of British Columbia. Some broader conceptions reach north into Alaska and Yukon, south into northern California, and east into western Montana. Other conceptions may be limited to the coastal areas west of the Cascade Mountains, Cascade and Coast Mountains, Coast mountains. The variety of definitions can be attributed to partially overlapping commonalities of the region's history, culture, geography, society, ecosystems, and other factors. The Northwest Coast is the coastal region of the Pacific Northwest, and the Northwest Plateau (also commonly known as "British Columbia Interi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cascade Torrent Salamander
The Cascade torrent salamander (''Rhyacotriton cascadae'') is a species of salamander in the family Rhyacotritonidae. It is endemic to the Pacific Northwest in the United States where it is found from Skamania County in Washington south to Lane County in Oregon on the west slope of the Cascade Mountains. Its natural habitats are temperate forests, rivers, and freshwater springs. It is threatened by habitat loss Habitat destruction (also termed habitat loss and habitat reduction) is the process by which a natural habitat becomes incapable of supporting its native species. The organisms that previously inhabited the site are displaced or dead, thereby .... These salamanders are typically found under rocks and fallen logs. As far as movement, cascade torrent salamander can stay in a small area over very long periods. They also tend to move parallel to the streams they live by. Living by the stream creates a wide range of general lifespan because the salamanders can die from ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Columbia Torrent Salamander
The Columbia torrent salamander (''Rhyacotriton kezeri'') is a species of salamander in the family Rhyacotritonidae, endemic to the Pacific Northwest in the United States. It is found in the coastal areas of Washington to northwestern Oregon. Its natural habitats are temperate forests, rivers, and freshwater springs. It is a small salamander (up to 10 cm total length) that lives in clear, cold, mountain streams. It is threatened by habitat loss Habitat destruction (also termed habitat loss and habitat reduction) is the process by which a natural habitat becomes incapable of supporting its native species. The organisms that previously inhabited the site are displaced or dead, thereby .... Due to their egg disposition being in enigmatic and obscure locations, there aren't many clear patterns as to where this species of salamander lays their eggs. Therefore, leading to inconclusive results on their reproductive ecology. References Rhyacotriton Amphibians of the Uni ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Olympic Torrent Salamander
The Olympic torrent salamander (''Rhyacotriton olympicus'') is a species of salamander in the family Rhyacotritonidae. This is a small salamander (up to 10 cm total length) that lives in clear, cold, mountain streams. It is medium to dark brown and may have a few small light spots on the sides and small dark spots on the tail; it is bright yellow on the belly, usually with some dark spots. Torrent salamanders typically have short snouts and relatively large eyes. As in other torrent salamanders, adult males have square-edged lobes behind the cloaca. These salamanders live at the edges of clear, cold, mountain streams; they can be abundant under gravel at stream edges and in the spray zones of waterfalls. During rainy seasons, they are occasionally found under objects on land away from streams. Its natural habitats are temperate forests, rivers, and freshwater springs. It is threatened by habitat loss Habitat destruction (also termed habitat loss and habitat reduction) i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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