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Margaritifera
''Margaritifera'' is a genus of freshwater mussels, Aquatic animal, aquatic bivalve molluscs in the family Margaritiferidae, the freshwater pearl mussels. MolluscaBase eds. (2021). MolluscaBase. Margaritifera Schumacher, 1815. Accessed through: World Register of Marine Species at: http://marinespecies.org/aphia.php?p=taxdetails&id=571966 on 2021-06-22 Species Species within the genus ''Margaritifera'' include: * ''Margaritifera auricularia'' or ''Pseudunio auricularia'' * ''Margaritifera falcata'' (Augustus Addison Gould, Gould, 1850) * ''Margaritifera hembeli'' (Conrad, 1838) * ''Margaritifera margaritifera'' (Carl Linnaeus, Linnaeus, 10th edition of Systema Naturae, 1758) — Freshwater pearl mussel (includes ''Margaritifera margaritifera durrovensis'' Phillips, 1928) * ''Margaritifera marrianae'' R. I. Johnson, 1983 The following fossil species are known from the mid-Cretaceous of Mongolia, being formerly classified in the genus ''Unio (bivalve), Unio'': * †''Margaritifera ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Margaritifera Margaritifera
The freshwater pearl mussel (''Margaritifera margaritifera'') is an endangered species of freshwater mussel, an aquatic bivalve mollusc in the family Margaritiferidae. Although the name "freshwater pearl mussel" is often used for this species, other freshwater mussel species (e.g. ''Margaritifera auricularia'') can also create pearls and some can also be used as a source of mother of pearl. Most cultured pearls today come from ''Hyriopsis'' species in Asia, or ''Amblema'' species in North America, both members of the related family Unionidae; pearls are also found within species in the genus ''Unio''. The interior of the shell of ''Margaritifera margaritifera'' has thick nacre (the inner mother of pearl layer of the shell). This species is capable of making fine-quality pearls, and was historically exploited in the search for pearls from wild sources. In recent times, the Russian malacologist Valeriy Zyuganov received worldwide reputation after he discovered that the pearl mu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Margaritifera Auricularia
''Margaritifera auricularia'' is a species of European freshwater mussel, an aquatic bivalve mollusk in the family Margaritiferidae, the freshwater pearl mussels. Formerly found throughout western and central Europe, the species is now critically endangered and is one of the rarest invertebrates worldwide, being confined to a few rivers in Spain and France. ''M. auricularia'' is commonly known as Spengler's freshwater mussel in honour of Lorenz Spengler, who first described this species. Description Large shells are up to 180 mm in length. Taxonomy There are different opinions on the taxonomy of this species. The species was originally described as ''Unio auricularius'' Spengler, 1793. When it is placed in the genus '' Margaritifera'' Schumacher, 1816, it is considered to be: * ''Margaritifera auricularia'' (Spengler, 1793) At other times it is placed in the genus '' Pseudunio'' F. Haas, 1910, in which case it is known as: * ''Pseudunio auricularia'' (Spengler, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Margaritifera
''Margaritifera'' is a genus of freshwater mussels, Aquatic animal, aquatic bivalve molluscs in the family Margaritiferidae, the freshwater pearl mussels. MolluscaBase eds. (2021). MolluscaBase. Margaritifera Schumacher, 1815. Accessed through: World Register of Marine Species at: http://marinespecies.org/aphia.php?p=taxdetails&id=571966 on 2021-06-22 Species Species within the genus ''Margaritifera'' include: * ''Margaritifera auricularia'' or ''Pseudunio auricularia'' * ''Margaritifera falcata'' (Augustus Addison Gould, Gould, 1850) * ''Margaritifera hembeli'' (Conrad, 1838) * ''Margaritifera margaritifera'' (Carl Linnaeus, Linnaeus, 10th edition of Systema Naturae, 1758) — Freshwater pearl mussel (includes ''Margaritifera margaritifera durrovensis'' Phillips, 1928) * ''Margaritifera marrianae'' R. I. Johnson, 1983 The following fossil species are known from the mid-Cretaceous of Mongolia, being formerly classified in the genus ''Unio (bivalve), Unio'': * †''Margaritifera ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Margaritifera Glabra
''Margaritifera'' is a genus of freshwater mussels, aquatic bivalve molluscs in the family Margaritiferidae, the freshwater pearl mussels. MolluscaBase eds. (2021). MolluscaBase. Margaritifera Schumacher, 1815. Accessed through: World Register of Marine Species at: http://marinespecies.org/aphia.php?p=taxdetails&id=571966 on 2021-06-22 Species Species within the genus ''Margaritifera'' include: * ''Margaritifera auricularia'' or ''Pseudunio auricularia'' * '' Margaritifera falcata'' (Gould, 1850) * '' Margaritifera hembeli'' (Conrad, 1838) * ''Margaritifera margaritifera'' (Linnaeus, 1758) — Freshwater pearl mussel (includes '' Margaritifera margaritifera durrovensis'' Phillips, 1928) * '' Margaritifera marrianae'' R. I. Johnson, 1983 The following fossil species are known from the mid-Cretaceous of Mongolia, being formerly classified in the genus '' Unio'': * †'' Margaritifera elongata'' (Martinson, 1982) * †'' Margaritifera sainshandensis'' (Martinson, 1982) * †'' Mar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Margaritifera Sainshandensis
''Margaritifera'' is a genus of freshwater mussels, aquatic bivalve molluscs in the family Margaritiferidae, the freshwater pearl mussels. MolluscaBase eds. (2021). MolluscaBase. Margaritifera Schumacher, 1815. Accessed through: World Register of Marine Species at: http://marinespecies.org/aphia.php?p=taxdetails&id=571966 on 2021-06-22 Species Species within the genus ''Margaritifera'' include: * ''Margaritifera auricularia'' or ''Pseudunio auricularia'' * '' Margaritifera falcata'' (Gould, 1850) * '' Margaritifera hembeli'' (Conrad, 1838) * ''Margaritifera margaritifera'' (Linnaeus, 1758) — Freshwater pearl mussel (includes '' Margaritifera margaritifera durrovensis'' Phillips, 1928) * '' Margaritifera marrianae'' R. I. Johnson, 1983 The following fossil species are known from the mid-Cretaceous of Mongolia, being formerly classified in the genus '' Unio'': * †'' Margaritifera elongata'' (Martinson, 1982) * †'' Margaritifera sainshandensis'' (Martinson, 1982) * †''Marg ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Margaritifera Elongata
''Margaritifera'' is a genus of freshwater mussels, aquatic bivalve molluscs in the family Margaritiferidae, the freshwater pearl mussels. MolluscaBase eds. (2021). MolluscaBase. Margaritifera Schumacher, 1815. Accessed through: World Register of Marine Species at: http://marinespecies.org/aphia.php?p=taxdetails&id=571966 on 2021-06-22 Species Species within the genus ''Margaritifera'' include: * ''Margaritifera auricularia'' or ''Pseudunio auricularia'' * '' Margaritifera falcata'' (Gould, 1850) * '' Margaritifera hembeli'' (Conrad, 1838) * ''Margaritifera margaritifera'' (Linnaeus, 1758) — Freshwater pearl mussel (includes '' Margaritifera margaritifera durrovensis'' Phillips, 1928) * '' Margaritifera marrianae'' R. I. Johnson, 1983 The following fossil species are known from the mid-Cretaceous of Mongolia, being formerly classified in the genus '' Unio'': * †'' Margaritifera elongata'' (Martinson, 1982) * †''Margaritifera sainshandensis'' (Martinson, 1982) * †''Marga ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Margaritifera Hembeli
The Louisiana pearlshell, ''Margaritifera hembeli'', is a rare species of bivalve mollusk in the family Margaritiferidae. This freshwater mussel is native to Louisiana in the United States, and was previously present also in Arkansas. It grows to a length of about and lives on the sand or gravel stream-bed in riffles and fast flowing stretches of small streams. Its life cycle involves a stage where it lives parasitically inside a fish. This mollusk is sensitive to increased sedimentation and cannot tolerate impoundments. Because of its limited range and its population decline, the International Union for Conservation of Nature has rated this mollusk as being " critically endangered". Description This mussel reaches about 10 centimeters long by 5 wide and 3 high. It is dark brown or black in color with a white nacre.USFWSFinal endangered status for Louisiana Pearlshell (''Margaritifera hembeli'').''Federal Register'' February 5, 1988. Ecology This mussel lives in small, shallow c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Margaritiferidae
Margaritiferidae is a family of medium-sized freshwater mussels, aquatic bivalve molluscs in the order Unionida. Text may have been copied from this source, which is available under Attribution 4.0 International (CC BY 4.0)licence. It is the most threatened of all unionid families. The family is sometimes referred to as the freshwater pearl mussel family, but "freshwater pearl mussel" more often applies to the species ''Margaritifera margaritifera''. The name refers to the thick layer of nacre (mother of pearl) lining the interior of the shell of the species, which enables them to produce pearls. Taxonomy A 2018 study suggested a new phylogeny and systematics of the Margaritiferidae, comprising two subfamilies, Gibbosulinae and Margaritiferinae, and four genera, ''Gibbosula'', ''Cumberlandia'', ''Margaritifera'', and ''Pseudunio''. This family has ancient origins, having diverged from the ancestors of the Unionidae during the Late Triassic with the crown group of the Marga ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Margaritifera Margaritifera Durrovensis
The Nore pearl mussel (''Margaritifera durrovensis'') is a critically endangered species of freshwater pearl mussel, an aquatic bivalve mollusc in the family Margaritiferidae. The species is endemic to Ireland and was first identified by R.A. Phillips in 1926, who later declared it a new species in Volume 18 of the Proceedings of the Malacological Society. This designation was controversial, and the taxonomic status of the Nore pearl mussel remains inconclusive. It is often described as a rare ecophenotype of ''M. margaritifera''. The European Union's Habitats Directive on the conservation of natural habitats and wild fauna placed ''Margaritifera durrovensis'' on Annex II and Annex V as a separate taxon. Distribution The species is native to the Three Sisters - the rivers Barrow, Suir and Nore, the latter of which being the mussel's namesake. However, specimens have not been found outside of the River Nore since 1993. Unlike ''M. margaritifera'', which can tolerate acidic co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Margaritifera Falcata
The western pearlshell (''Margaritifera falcata'') is a species of freshwater bivalve, a pearl mussel, a bivalve mollusk in the family Margaritiferidae. This species can be found only in the United States and Canada, where it occurs mostly west of the Rocky Mountains. Distribution This species of pearl mussel is found in Pacific drainages from California north to British Columbia and southern Alaska.Clarke, A. H. 1981. ''The Freshwater Molluscs of Canada''. National Museum of Natural Sciences, National Museums of Canada, Ottawa. 446 pp.Frest, T.J. and E. J. Johannes. 1995. Interior Columbia Basin mollusk species of special concern. Final report to the Interior Columbia Basin Ecosystem Management Project, Walla Walla, WA. Contract #43-0E00-4-9112. 274 pp. plus appendices. Some scientists consider a number of the coastal and large river populations of this species to be already extirpated, nearly extirpated, or declining rapidly.Brim Box, K., J. Howard, D. Wolf, C. O'Brian, D. Nez, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Margaritifera Marrianae
''Margaritifera marrianae'', the Alabama pearlshell, is a species of freshwater mussel, an aquatic bivalve mollusk in the family Margaritiferidae, the freshwater pearl mussels. This species is endemic to the United States. 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 .... References Molluscs of the United States marrianae Molluscs described in 1983 Taxonomy articles created by Polbot ESA endangered species {{bivalve-stub ... [...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] |
