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Theliderma
''Theliderma'' is a genus of freshwater mussels, aquatic bivalve mollusks in the family Unionidae. They are native to North America. This genus is sometimes classified in an expanded ''Quadrula''. Species within the genus ''Theliderma'' Note: Taxa with a "†" symbol are extinct due to human activity * ''Theliderma cylindrica'' - Rabbitsfoot * ''Theliderma intermedia'' - Cumberland monkeyface * ''Theliderma metanevra'' - Monkeyface * ''Theliderma sparsa'' - Appalachian monkeyface * †''Theliderma stapes'' - Stirrup shell * †''Theliderma tuberosa ''Theliderma tuberosa'', the rough rockshell, is a species of freshwater mussel. It is an aquatic bivalve mollusk in the family Unionidae, the river mussels. It has sometimes been treated as a variety or big-river ecotype of '' Theliderma metane ...'' - Rough rockshell Bivalve genera {{Unionidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Theliderma
''Theliderma'' is a genus of freshwater mussels, aquatic bivalve mollusks in the family Unionidae. They are native to North America. This genus is sometimes classified in an expanded ''Quadrula''. Species within the genus ''Theliderma'' Note: Taxa with a "†" symbol are extinct due to human activity * ''Theliderma cylindrica'' - Rabbitsfoot * ''Theliderma intermedia'' - Cumberland monkeyface * ''Theliderma metanevra'' - Monkeyface * ''Theliderma sparsa'' - Appalachian monkeyface * †''Theliderma stapes'' - Stirrup shell * †''Theliderma tuberosa ''Theliderma tuberosa'', the rough rockshell, is a species of freshwater mussel. It is an aquatic bivalve mollusk in the family Unionidae, the river mussels. It has sometimes been treated as a variety or big-river ecotype of '' Theliderma metane ...'' - Rough rockshell Bivalve genera {{Unionidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Theliderma Sparsa
''Theliderma sparsa'', the Appalachian monkey-face pearly mussel or Appalachian monkeyface, is a species of freshwater mussel, an aquatic bivalve mollusk in the family Unionidae, the river mussels. This species is endemic to western Virginia and eastern Tennessee in the Appalachia region, in the Southeastern United States. It is critically endangered due to pollution of the rivers in which it lives. Being a detritivore, the mussel absorbs the pollutants which contaminate the river as it feeds. Distribution There are two to three populations remaining. In the Clinch River of Virginia there is a small, isolated population. A population in the upper Powell River in Tennessee is nearly gone. These occurrences may not be viable. All other occurrences have been extirpated. Reproduction Like other unionid mussels, ''Theliderma sparsa'' uses fish as an intermediate host for its glonchidia larvae. Captive breeding experiments have demonstrated that the mussel larvae can develop on ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Theliderma Cylindrica
The rabbitsfoot (''Theliderma cylindrica'') is a species of freshwater mussel. It is an aquatic bivalve mollusk, in the family Unionidae, the river mussels. This species is native to the United States, where it is widespread in the drainages of the Ohio River and the Great Lakes. It has disappeared from over half its historic range. Subspecies Two subspecies have been described. It is unclear whether they represent distinct evolutionary lineages, or are merely ecophenotypic variation which would not warrant any taxonomic status. A 2007 genetic study has cast doubt upon the validity of the existence of two subspecies. * ''Theliderma cylindrica cylindrica'' (Say, 1817) — * ''Theliderma cylindrica strigillata'' (Wright, 1898) — Rough rabbitsfoot, found only in the headwaters of the Tennessee River. See also *List of non-marine molluscs of the United States The non-marine mollusks of the United States are a part of the molluscan fauna of the United States. Freshwater ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Theliderma Stapes
''Theliderma stapes'', the stirrup shell or stirrupshell, was a species of bivalve in the family Unionidae. It was endemic to eastern Mississippi and western Alabama in the United States. It was last observed in 1987 and was proposed for delisting due to extinction by the US Fish and Wildlife Service in 2021. Conservation This species experienced a population collapse primarily due to river modification in the form of canal construction. In 1976, it was predicted that the construction of the Tennessee–Tombigbee Waterway would cause the extinction of this species. This prediction would quickly come to fruition after the waterway was completed in 1984. Freshly dead shells of this species were last observed in 1987 and further surveys have failed to find any evidence of a surviving population. In 2021, it was proposed to delist this species from the Endangered Species Act. This is done when further efforts to recover a species would almost certainly be futile, and there is no ev ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Theliderma Intermedia
''Theliderma intermedia'', the Cumberland monkeyface pearly mussel or Cumberland monkeyface, is a species of freshwater mussel in the family Unionidae, the river mussels. This aquatic bivalve mollusk is native to Tennessee and Virginia in the United States. Historically widespread in the upper Tennessee River system, it populations have been reduced by habitat destruction and pollution. It now only occurs in two tributaries: the Duck and Powell Rivers.''Quadrula intermedia''. The Nature Conservancy.USFWS ''Quadrula intermedia'' Five-year Review. July 2011. It is a federally listed |
Theliderma Tuberosa
''Theliderma tuberosa'', the rough rockshell, is a species of freshwater mussel. It is an aquatic bivalve mollusk in the family Unionidae, the river mussels. It has sometimes been treated as a variety or big-river ecotype of '' Theliderma metanevra'', due to only having slight shell differences. This species was endemic to the Cumberland River watershed in the states of Kentucky and Tennessee. It is believed to be either extinct or critically endangered due to habitat destruction 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 ... and pollution. References Sources * Bogan, A.E. 1996.Quadrula tuberosa 2006 IUCN Red List of Threatened Species. Downloaded on 7 August 2007. Endemic molluscs of the United States Critically endangered fauna of the United States Fauna of the S ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Theliderma Metanevra
''Theliderma metanevra'', common name the monkeyface, is a species of freshwater mussel, an aquatic bivalve mollusk in the family Unionidae, the river mussels. It is native to the eastern United States The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territori ..., where it lives in large to medium-sized rivers. Although it has been extirpated from certain sections of its range, it is still widespread and fairly common. References Fauna of the Southeastern United States Critically endangered fauna of the United States metanerva Bivalves described in 1820 Taxa named by Constantine Samuel Rafinesque {{Unionidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Unionidae
The Unionidae are a family of freshwater mussels, the largest in the order Unionida, the bivalve molluscs sometimes known as river mussels, or simply as unionids. The range of distribution for this family is world-wide. It is at its most diverse in North America, with about 297 recognised taxa, but China and Southeast Asia also support very diverse faunas. Freshwater mussels occupy a wide range of habitats, but most often occupy lotic waters, i.e. flowing water such as rivers, streams and creeks. Origin and early diversification The recent phylogenetic study reveals that the Unionidae most likely originated in Southeast and East Asia in the Jurassic, with the earliest expansions into North America and Africa (since the mid-Cretaceous) followed by the colonization of Europe and India (since the Paleocene). Life history Unionidae burrow into the substrate, with their posterior margins exposed. They pump water through the incurrent aperture, obtaining oxygen and food. They remove ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quadrula
''Quadrula'' is a genus of freshwater mussels, aquatic bivalve mollusks in the family Unionidae native to rivers of the American Midwest and mid-south. All have thick nacreous shells with well-developed hinge teeth, many also with external shell sculpturing of nodules or lumps. Species within the genus ''Quadrula'' In 2012, many species classified as ''Quadrula'' were moved to ''Rotundaria'' and ''Theliderma'' based on genetic and morphological evidence. Species currently in ''Quadrula'' now consist of: * ''Quadrula apiculata'' (Southern mapleleaf) * ''Quadrula fragosa'' (Winged mapleleaf) * ''Quadrula nobilis'' (Gulf mapleleaf) * ''Quadrula quadrula'' (Mapleleaf) * ''Quadrula rumphiana'' (Ridged mapleleaf) * ''Quadrula verrucosa ''Quadrula'' is a genus of freshwater mussels, aquatic bivalve mollusks in the family Unionidae native to rivers of the American Midwest and mid-south. All have thick nacreous shells with well-developed hinge teeth, many also with external she ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Genus
Genus ( plural genera ) is a taxonomic rank used in the biological classification of living and fossil organisms as well as viruses. In the hierarchy of biological classification, genus comes above species and below family. In binomial nomenclature, the genus name forms the first part of the binomial species name for each species within the genus. :E.g. '' Panthera leo'' (lion) and '' Panthera onca'' (jaguar) are two species within the genus '' Panthera''. ''Panthera'' is a genus within the family Felidae. The composition of a genus is determined by taxonomists. The standards for genus classification are not strictly codified, so different authorities often produce different classifications for genera. There are some general practices used, however, including the idea that a newly defined genus should fulfill these three criteria to be descriptively useful: # monophyly – all descendants of an ancestral taxon are grouped together (i.e. phylogenetic analysis should cl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Freshwater Mussel
Freshwater bivalves are one kind of freshwater mollusc, along with freshwater snails. They are bivalves that live in fresh water as opposed to salt water, which is the main habitat type for bivalves. The majority of species of bivalve molluscs live in the sea, but in addition, a number of different families live in fresh water (and in some cases, also in brackish water). These families belong to two different evolutionary lineages (freshwater mussels and freshwater clams), and the two groups are not closely related. Freshwater bivalves have a simple morphology that varies among taxa, and are distributed around most regions of the world. Species in the two groups vary greatly in size. Some pea clams (''Pisidium'' species) have an adult size of only 3 mm. In contrast, one of the largest species of freshwater bivalves is the swan mussel, in the family Unionidae; it can grow to a length of 20 cm, and usually lives in lakes or slow rivers. Freshwater pearl mussels are eco ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aquatic Animal
An aquatic animal is any animal, whether invertebrate or vertebrate, that lives in water for most or all of its lifetime. Many insects such as mosquitoes, mayflies, dragonflies and caddisflies have aquatic larvae, with winged adults. Aquatic animals may breathe air or extract oxygen from water through specialised organs called gills, or directly through the skin. Natural environments and the animals that live in them can be categorized as aquatic (water) or terrestrial (land). This designation is polyphyletic. Description The term aquatic can be applied to animals that live in either fresh water or salt water. However, the adjective marine is most commonly used for animals that live in saltwater, i.e. in oceans, seas, etc. Aquatic animals (especially freshwater animals) are often of special concern to conservationists because of the fragility of their environments. Aquatic animals are subject to pressure from overfishing, destructive fishing, marine pollution, hunting, a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
