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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 "† A dagger, obelisk, or obelus is a typographical mark that usually indicates a footnote if an asterisk has already been used. The symbol is also used to indicate death (of people) or extinction (of species or languages). It is one of the mo ..." 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'' - 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 the ... [...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. Conservation ''Quadrula cylindrica cylindrica'' has been listed as an Endangered Species Act The Endangered Species Act of 1973 (ESA; 16 U.S.C. § 1531 et seq.) is the p ... [...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. It is a federally listed endangered species. This species is greenish yellow in color. It can reach at least 35 years of age. Like other mussels, it has larvae called glochidia that lodge in the gills of fish to develop into juvenile mussels. Hosts for this species include the streamline chub (''Erimystax dissimilis'') and blotched chub (''Erimystax insignis''). This mussel has been extirpated from the Elk River. There is still a population in the Powell River, and the population in the Duck River appears to be viable. * The ... [...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. It was officially declared extinct on October 16, 2023. 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 spec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 or habitat reduction) occurs when a natural habitat is no longer able to support its native species. The organisms once living there have either moved elsewhere, or are dead, leading to a decrease ... 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 Sout ... [...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 (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 ..., 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 (biology), 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 (mollusc), aperture, o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quadrula
''Quadrula'' is a genus of freshwater mussels, Aquatic animal, 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'' (Pistolgrip) References Quadrula, Bivalve genera Molluscs of the United States Taxonomy articles created by Polbot {{Unionidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Genus
Genus (; : genera ) is a taxonomic rank above species and below family (taxonomy), family as used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. 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 taxonomy (biology), 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. Phylogeneti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Freshwater Mussel
Freshwater bivalves are molluscs of the order Bivalvia that inhabit freshwater ecosystems. They are one of the two main groups of freshwater molluscs, along with freshwater snails. The majority of bivalve molluscs are saltwater species that live in the marine habitats, but a number of families have evolved to live in fresh water (and in some cases, also in brackish water). These belong to two different evolutionary lineages, i.e. 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. Freshwater bivalve species vary greatly in size. Some pea clams (genus '' Pisidium'') have an adult size of only . In contrast, one of the largest species of freshwater bivalves is the swan mussel from the family Unionidae; it can grow to a length of , and usually lives in lakes or slow-flowing rivers. Freshwater pearl mussels are economical ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aquatic Animal
An aquatic animal is any animal, whether vertebrate or invertebrate, that lives in a body of water for all or most of its lifetime. Aquatic animals generally conduct gas exchange in water by extracting dissolved oxygen via specialised respiratory system, respiratory organ (biology), organs called gills, cutaneous respiration, through the skin or enteral respiration, across enteral mucosae, although some are evolution, evolved from terrestrial ancestors that re-adaptation, adapted to aquatic environments (e.g. marine reptiles and marine mammals), in which case they actually use lungs to breathing, breathe air and are essentially apnea, holding their breath when living in water. Some species of gastropod mollusc, such as the Elysia chlorotica, eastern emerald sea slug, are even capable of kleptoplastic photosynthesis via endosymbiosis with ingested yellow-green algae. Almost all aquatic animals reproduce in water, either oviparously or viviparously, and many species routinely fish ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
