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Tryonia Gilae
The Gila tryonia (''Tryonia gilae'') is a species of freshwater snail in the family Hydrobiidae, the mud snails. It is endemic to Arizona in the United States, where it is known only from Graham County.NatureServe. 2014''Tryonia gilae''.NatureServe Explorer. Version 7.1. Accessed September 13, 2014. This snail has a conical, elongated shell reaching about 3.4 millimeters in length and 3.3 in height. The shell is transparent. The animal has fleshy lips on its snout.''Tryonia gilae''. Invertebrate Abstracts. Arizona Game and Fish Department. This snail occurs at just a few spots in springs in the Upper Gila River system near |
Animalia
Animals are multicellular, eukaryotic organisms in the biological kingdom Animalia. With few exceptions, animals consume organic material, breathe oxygen, are able to move, can reproduce sexually, and go through an ontogenetic stage in which their body consists of a hollow sphere of cells, the blastula, during embryonic development. Over 1.5 million living animal species have been described—of which around 1 million are insects—but it has been estimated there are over 7 million animal species in total. Animals range in length from to . They have complex interactions with each other and their environments, forming intricate food webs. The scientific study of animals is known as zoology. Most living animal species are in Bilateria, a clade whose members have a bilaterally symmetric body plan. The Bilateria include the protostomes, containing animals such as nematodes, arthropods, flatworms, annelids and molluscs, and the deuterostomes, containing the echinode ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Freshwater Snail
Freshwater snails are gastropod mollusks which live in fresh water. There are many different families. They are found throughout the world in various habitats, ranging from ephemeral pools to the largest lakes, and from small seeps and springs to major rivers. The great majority of freshwater gastropods have a shell, with very few exceptions. Some groups of snails that live in freshwater respire using gills, whereas other groups need to reach the surface to breathe air. In addition, some are amphibious and have both gills and a lung (e.g. ''Ampullariidae''). Most feed on algae, but many are detritivores and some are filter feeders. According to a 2008 review of the taxonomy, there are about 4,000 species of freshwater gastropods (3,795–3,972). At least 33–38 independent lineages of gastropods have successfully colonized freshwater environments. It is not possible to quantify the exact number of these lineages yet, because they have yet to be clarified within the Cerit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Endemic Fauna Of Arizona
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] |
Bylas, Arizona
Bylas ( apw, Hago'teełe) is an unincorporated community and census-designated place in Graham County, Arizona, United States, located within the San Carlos Apache Indian Reservation. As of the 2010 census, its population was 1,962. The community has a medical clinic, a police substation, and a market. Bylas is an Apache settlement divided into two communities, one of the White Mountain Apache, the other of San Carlos and Southern Tonto Apache. It is named for Bylas (a.k.a. ''Bailish'') a chief of the Eastern White Mountain Apache band. Geography Bylas is located at (33.1386688, -110.1250875), at an elevation of 2,608 feet (795 m). Demographics Bylas' population in 1960 was estimated as 500. Bylas appeared on the 1970 U.S. Census as an unincorporated village. In 1980, it was made a census-designated place (CDP). In 2000, it did not initially appear on the census returns, but the census viewer page later returned a population of 1,147. It appeared normally again as ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gila River
The Gila River (; O'odham ima Keli Akimel or simply Akimel, Quechan: Haa Siʼil, Maricopa language: Xiil) is a tributary of the Colorado River flowing through New Mexico and Arizona in the United States. The river drains an arid watershed of nearly that lies mainly within the U.S., but also extends into northern Sonora, Mexico. Indigenous peoples have lived along the river for at least 2,000 years, establishing complex agricultural societies before European exploration of the region began in the 16th century. However, European Americans did not permanently settle the Gila River watershed until the mid-19th century. During the 20th century, human development of the Gila River watershed prompted the construction of large diversion and flood control structures on the river and its tributaries, and consequently the Gila now contributes only a small fraction of its historic flow to the Colorado. The historic natural discharge of the river is around , and is now only . These engin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spring (hydrology)
A spring is a point of exit at which groundwater from an aquifer flows out on top of Earth's crust (pedosphere) and becomes surface water. It is a component of the hydrosphere. Springs have long been important for humans as a source of fresh water, especially in arid regions which have relatively little annual rainfall. Springs are driven out onto the surface by various natural forces, such as gravity and hydrostatic pressure. Their yield varies widely from a volumetric flow rate of nearly zero to more than for the biggest springs. Formation Springs are formed when groundwater flows onto the surface. This typically happens when the groundwater table reaches above the surface level. Springs may also be formed as a result of karst topography, aquifers, or volcanic activity. Springs also have been observed on the ocean floor, spewing hot water directly into the ocean. Springs formed as a result of karst topography create karst springs, in which ground water travels through ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Graham County, Arizona
Graham County is a county in the southeastern part of the U.S. state of Arizona. As of the 2020 census, the population was 38,533, making it the third-least populous county in Arizona. The county seat is Safford. Graham County composes the Safford, Arizona Micropolitan Statistical Area. The county is home to several organizations including Eastern Arizona College and the Mount Graham International Observatory, which includes one of the world's largest and most powerful telescopes. Graham County is also home to the Arizona Salsa Trail and the annual Salsa Fest. Graham County contains part of the San Carlos Apache Indian Reservation. History Joseph Knight Rogers, an early settler in the area, and a member of the Arizona Territorial Legislature, is known as the father of Graham County. He introduced the bill in the territorial legislature creating Graham County. Graham County was created from southern Apache County and eastern Pima County on March 10, 1881. Initially, the co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arizona
Arizona ( ; nv, Hoozdo Hahoodzo ; ood, Alĭ ṣonak ) is a state in the Southwestern United States. It is the 6th largest and the 14th most populous of the 50 states. Its capital and largest city is Phoenix. Arizona is part of the Four Corners region with Utah to the north, Colorado to the northeast, and New Mexico to the east; its other neighboring states are Nevada to the northwest, California to the west and the Mexican states of Sonora and Baja California to the south and southwest. Arizona is the 48th state and last of the contiguous states to be admitted to the Union, achieving statehood on February 14, 1912. Historically part of the territory of in New Spain, it became part of independent Mexico in 1821. After being defeated in the Mexican–American War, Mexico ceded much of this territory to the United States in 1848. The southernmost portion of the state was acquired in 1853 through the Gadsden Purchase. Southern Arizona is known for its desert cl ... [...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] |
Dwight Willard Taylor
Dwight Willard Taylor (1932–2006)Coan E. V., Kabat A. R. & Petit R. E. (15 February 2009) 830 pp. & 32 pp. nnex of Collations American Malacological Society was an American malacologist and paleontologist, a researcher on mollusks. His undergraduate work was at the University of California, Berkeley and his PhD was from Harvard University. He was instrumental in the creation of the malacological journal, ''Malacologia''. Taxa Taylor named and described 132Kabat A. R. & Johnson R. I. (2008). "Dwight Willard Taylor (1932–2006): His Life And Malacological Research". ''Malacologia'' 50(1): 175-218. . new taxa of gastropods, mostly freshwater snails in the families Hydrobiidae and Physidae, including: * '' Mexipyrgus'' Taylor, 1966, in the Hydrobiidae * ''Coahuilix hubbsi'' Taylor, 1966, in the Hydrobiidae A number of taxa of non-marine mollusca were named in honor of him, including: * The freshwater snail genus '' Taylorconcha'' Hershler et al., 1994, in the Hydrobiidae. Public ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mollusca
Mollusca is the second-largest phylum of invertebrate animals after the Arthropoda, the members of which are known as molluscs or mollusks (). Around 85,000 extant species of molluscs are recognized. The number of fossil species is estimated between 60,000 and 100,000 additional species. The proportion of undescribed species is very high. Many taxa remain poorly studied. Molluscs are the largest marine phylum, comprising about 23% of all the named marine organisms. Numerous molluscs also live in freshwater and terrestrial habitats. They are highly diverse, not just in size and anatomical structure, but also in behaviour and habitat. The phylum is typically divided into 7 or 8 taxonomic classes, of which two are entirely extinct. Cephalopod molluscs, such as squid, cuttlefish, and octopuses, are among the most neurologically advanced of all invertebrates—and either the giant squid or the colossal squid is the largest known invertebrate species. The gastropod ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tryonia
''Tryonia'' is a genus of freshwater snails in the family Hydrobiidae.Wesselingh F. P., et al. (2006).Molluscs from the Miocene Pebas Formation of Peruvian and Colombian Amazonia.''Scripta Geologica'' 1333 19-290. This genus is sometimes placed in the family CochliopidaeBouchet, P. (2014). Tryonia Stimpson, 1865. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=722774 on 2014-11-16 Snails of this genus are very small with narrow shells. Females brood young within the genital tract. Species usually live in springs. The genus is differentiated from others by the structure of the male and female reproductive systems.Hershler, R., et al. (2011)New species and records of springsnails (Caenogastropoda: Cochliopidae: Tryonia) from the Chihuahuan Desert (Mexico and United States), an imperiled biodiversity hotspot.''Zootaxa'' 3001 1-32. Most of these snails occur in western North America, especially the Chihuahuan Desert. Ther ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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