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Hydromantes
''Hydromantes'', commonly referred to as web-toed salamanders, is a genus of the lungless salamander family, Plethodontidae; they achieve respiration through their skin and the tissues lining their mouth. They are endemic to mountains of California in the United States. Salamanders of this genus are distinguished in having extremely long tongues that they can project to 80% of their body length. Similar species endemic to southern France and Italy are now classified in a distinct genus, ''Speleomantes''. Species The following five species are placed in this genus: References External links * . 2007. Amphibian Species of the World: an Online Reference. Version 5.2 (15 July 2008)''Hydromantes'' Electronic Database accessible at https://web.archive.org/web/20071024033938/http://research.amnh.org/herpetology/amphibia/index.php. American Museum of Natural History, New York, USA. (Accessed: August 1, 2008). * [web application]. 2008. Berkeley, California''Hydromantes'' AmphibiaWe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hydromantes Samweli
The Samwel Shasta salamander (''Hydromantes samweli'') is a species of salamander in the family Plethodontidae. It is endemic to Shasta County in California. Taxonomy It was previously thought to be a population of the Shasta salamander (''H. shastae'') and is not physically distinguishable, but a 2018 phylogenetic study found it to be a genetically distinct species. It is named after its type locality, Samwel Cave, which originates from ''Sa-Wal'', the Wintu name for grizzly bear. Distribution It is found in a fairly small area around the north-central and northwest sides of Shasta Lake, but possibly extending 20 km further to the west. Threats Its distribution was likely fragmented by the creation of the lake and the construction of the Shasta Dam. Proposals to raise the water levels would likely flood more habitats and further threaten it. However, in 2021 the U.S. Fish and Wildlife Service found the species to not warrant Endangered Species Act The Endan ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hydromantes
''Hydromantes'', commonly referred to as web-toed salamanders, is a genus of the lungless salamander family, Plethodontidae; they achieve respiration through their skin and the tissues lining their mouth. They are endemic to mountains of California in the United States. Salamanders of this genus are distinguished in having extremely long tongues that they can project to 80% of their body length. Similar species endemic to southern France and Italy are now classified in a distinct genus, ''Speleomantes''. Species The following five species are placed in this genus: References External links * . 2007. Amphibian Species of the World: an Online Reference. Version 5.2 (15 July 2008)''Hydromantes'' Electronic Database accessible at https://web.archive.org/web/20071024033938/http://research.amnh.org/herpetology/amphibia/index.php. American Museum of Natural History, New York, USA. (Accessed: August 1, 2008). * [web application]. 2008. Berkeley, California''Hydromantes'' AmphibiaWe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hydromantes Wintu
The Wintu Shasta salamander (''Hydromantes wintu'') is a species of salamander in the family Plethodontidae. It is endemic to Shasta County in California. Taxonomy It was previously thought to be a population of the Shasta salamander (''H. shastae'') and is not physically distinguishable, but a 2018 phylogenetic study found it to be a genetically distinct species. It is named in honor of the Winnemem Wintu people who originally inhabited the area until being displaced by early European settlers, and had many of their cultural sites inundated by Shasta Lake. Distribution It is found in a very small area on the McCloud River arm on the north shore of Shasta Lake, near the vicinity of the former Shasta Iron Mine. Habitat Its distribution was likely fragmented by the creation of the lake and the construction of the Shasta Dam. Proposals to raise the water levels of the lake would likely flood more habitats and further threaten it. However, in 2021 the U.S. Fish and Wildlif ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hydromantes Shastae
The Shasta salamander (''Hydromantes shastae'') is a species of salamander in the family Plethodontidae. It is endemic to Shasta County in California. Taxonomy Formerly considered to be a single species with a rather small distribution in the vicinity of Shasta Lake, a 2018 study found it to comprise three species, including ''H. shastae sensu stricto'', and two new species: the Samwel Shasta salamander (''H. samweli''), found in the north-central and northwest sides of the lake, and the Wintu Shasta salamander (''H. wintu'') on the northern shore of the lake near the McCloud River. Both species are physically similar to ''H. shastae'' and can only be distinguished by range and genetics. The reclassification of the Shasta salamander complex into three distinct species highlights its ecological significance, as each species occupies different, highly specific habitats. Conservation efforts are crucial, given the species' vulnerability due to habitat fragmentation and potential ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Speleomantes
''Speleomantes'', or European cave salamanders, are a genus of salamander in the family Plethodontidae, or lungless salamanders. It is one of two genera in the family to inhabit the Old World (the other being ''Karsenia''), with the remaining 250 or so species being found in North, Central and South America. The genus is endemic to Italy and a few nearby areas (San Marino, Monaco, and eastern Provence). Characteristics Until recently, ''Speleomantes'' was combined with the web-toed salamander genus ''Hydromantes'' from the Sierra Nevada (U.S.), Sierra Nevada range of California, which are their closest relatives, and are still combined by some herpetologists. They lack lungs; respiration takes place through the skin, which must be kept moist, and the lining of the mouth. The head is broad and distinct with prominent eyes. There are characteristic deep nasolabial grooves between the nostrils and the edge of the lips. The tongue has a broad tip and is extensible, being shot forward ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plethodontidae
Plethodontidae, or lungless salamanders, are a family of salamanders. With over 500 species, lungless salamanders are by far the largest family of salamanders in terms of their diversity. Most species are native to the Western Hemisphere, from British Columbia to Brazil. Only two extant genera occur in the Eastern Hemisphere: '' Speleomantes'' (native to Sardinia and mainland Europe south of the Alps) and '' Karsenia'' (native to South Korea). Biology Adult lungless salamanders have four limbs, with four toes on the fore limbs, and usually with five on the hind limbs. Within many species, mating and reproduction occur solely on land. Accordingly, many species also lack an aquatic larval stage, a phenomenon known as direct development in which the offspring hatch as fully-formed, miniature adults. Direct development is correlated with changes in the developmental characteristics of plethodontids compared to other families of salamanders including increases in egg size and durat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Endemic
Endemism is the state of a species being found only 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 also be referred to as an ''endemism'' or, in scientific literature, as an ''endemite''. Similarly, many species found in the Western ghats of India are examples of endemism. Endemism is an important concept in conservation biology for measuring biodiversity in a particular place and evaluating the risk of extinction for species. Endemism is also of interest in evolutionary biology, because it provides clues about how changes in the environment cause species to undergo range shifts (potentially expanding their range into a larger area or bec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
California
California () is a U.S. state, state in the Western United States that lies on the West Coast of the United States, Pacific Coast. It borders Oregon to the north, Nevada and Arizona to the east, and shares Mexico–United States border, an international border with the Mexico, Mexican state of Baja California to the south. With almost 40million residents across an area of , it is the List of states and territories of the United States by population, largest state by population and List of U.S. states and territories by area, third-largest by area. Prior to European colonization of the Americas, European colonization, California was one of the most culturally and linguistically diverse areas in pre-Columbian North America. European exploration in the 16th and 17th centuries led to the colonization by the Spanish Empire. The area became a part of Mexico in 1821, following Mexican War of Independence, its successful war for independence, but Mexican Cession, was ceded to the U ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States
The United States of America (USA), also known as the United States (U.S.) or America, is a country primarily located in North America. It is a federal republic of 50 U.S. state, states and a federal capital district, Washington, D.C. The 48 contiguous states border Canada to the north and Mexico to the south, with the semi-exclave of Alaska in the northwest and the archipelago of Hawaii in the Pacific Ocean. The United States asserts sovereignty over five Territories of the United States, major island territories and United States Minor Outlying Islands, various uninhabited islands in Oceania and the Caribbean. It is a megadiverse country, with the world's List of countries and dependencies by area, third-largest land area and List of countries and dependencies by population, third-largest population, exceeding 340 million. Its three Metropolitan statistical areas by population, largest metropolitan areas are New York metropolitan area, New York, Greater Los Angeles, Los Angel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Extant Pleistocene First Appearances
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Extant or least concern is the opposite of the word extinct. It may refer to: * Extant hereditary titles * Extant literature, surviving literature, such as ''Beowulf'', the oldest extant manuscript written in English * Extant taxon, a taxon which is not extinct, such as an extant species * Extant Theatre Company, a disability arts organisation * ''Extant'' (TV series), an American television series * Hank Hall, also known as Extant, a DC Comics supervillain See also * Extent (other) Extent may refer to: Computing * Extent (file systems), a contiguous region of computer storage medium reserved for a file * Extent File System, a discontinued file system implementation named after the contiguous region * Extent, a chunk of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
