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Etheriidae
Etheriidae is a small Family (biology), family of medium-sized freshwater mussels, Aquatic animal, aquatic bivalve molluscs in the order Unionida. It contains two monotypic genera. Genera Genera within the family Etheriidae include: * ''Acostaea (bivalve), Acostaea'' d'Orbigny, 1851 ** ''Acostaea rivolii'' Deshayes, 1827 * ''Etheria (bivalve), Etheria'' Lamarck, 1807 ** ''Etheria elliptica'' Lamarck, 1807 * ''Pseudomulleria'' **''Pseudomulleria dalyi'' Smith, 1898 References External links Etheriidae, Bivalve families {{bivalve-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Etheria (bivalve)
''Etheria'' is a genus of freshwater oysters in the Etheriidae family of mollusk bivalves, and a part of the Unionida order. The genus includes a single species, ''Etheria elliptica'', that is found throughout Africa and Madagascar. ''Etheria elliptica'' was first described by Jean-Baptiste Lamarck in 1807, and lives in river basins along the Nile, Lake Tanganyika and Lake Victoria, and in Chad, Zaire, Niger, Senegal, and Angola. ''Etheria'' are found as fossils at paleontological sites in Africa, including at Lake Turkana 3-5 million years ago. It first appears in the Miocene The Miocene ( ) is the first epoch (geology), geological epoch of the Neogene Period and extends from about (Ma). The Miocene was named by Scottish geologist Charles Lyell; the name comes from the Greek words (', "less") and (', "new") and mea ... in northeast Zaire. Synonyms * ''Aetheria bourguignati'' Rochebrune, 1886 · * † ''Aetheria chambardi'' Bourguignat, 1880 · * ''Aetheria denhami'' Ko ... [...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] |
Etheria Elliptica
''Etheria'' is a genus of freshwater oysters in the Etheriidae family of mollusk bivalves, and a part of the Unionida order. The genus includes a single species, ''Etheria elliptica'', that is found throughout Africa and Madagascar. ''Etheria elliptica'' was first described by Jean-Baptiste Lamarck in 1807, and lives in river basins along the Nile, Lake Tanganyika and Lake Victoria, and in Chad, Zaire, Niger, Senegal, and Angola. ''Etheria'' are found as fossils at paleontological sites in Africa, including at Lake Turkana 3-5 million years ago. It first appears in the Miocene The Miocene ( ) is the first epoch (geology), geological epoch of the Neogene Period and extends from about (Ma). The Miocene was named by Scottish geologist Charles Lyell; the name comes from the Greek words (', "less") and (', "new") and mea ... in northeast Zaire. Synonyms * ''Aetheria bourguignati'' Rochebrune, 1886 · * † ''Aetheria chambardi'' Bourguignat, 1880 · * ''Aetheria denhami'' Ko ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pseudomulleria
''Pseudomulleria dalyi'' is a species of bivalves in the Etheriidae family which is endemic to India. Its natural habitat is rivers. It is threatened by habitat loss 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 .... It is the only species in the genus ''Pseudomulleria''. References Etheriidae Monotypic bivalve genera Molluscs of India Endemic fauna of India Taxonomy articles created by Polbot {{Bivalve-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Unionida
Unionida is a monophyletic order (biology), order of freshwater mussels, aquatic animal, aquatic bivalve molluscs.Bieler R., Carter J.G. & Coan E.V. (2010). ''Classification of Bivalve families''. pp. 113–133, in: Bouchet P. & Rocroi J.-P. (2010), ''Nomenclator of Bivalve Families''. Malacologia 52(2): 1–184. The order includes most of the larger freshwater mussels, including the freshwater pearl mussels. The most common families are the Unionidae and the Margaritiferidae. All have in common a larval stage that is temporarily parasitic on fish, nacreous shells, high in organic matter, that may crack upon drying out, and siphon (mollusc), siphons too short to permit the animal to live deeply buried in sediment. Morphology The shells of these mussels are variable in shape, but usually equivalve and elongate. They have solid, nacreous valves with a pearly interior, radial sculpture, and an entire pallial line. Evolutionary history Although some fossil freshwater bivalves ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Family (biology)
Family (, : ) is one of the eight major hierarchical taxonomic ranks in Linnaean taxonomy. It is classified between order and genus. A family may be divided into subfamilies, which are intermediate ranks between the ranks of family and genus. The official family names are Latin in origin; however, popular names are often used: for example, walnut trees and hickory trees belong to the family Juglandaceae, but that family is commonly referred to as the "walnut family". The delineation of what constitutes a family—or whether a described family should be acknowledged—is established and decided upon by active taxonomists. There are not strict regulations for outlining or acknowledging a family, yet in the realm of plants, these classifications often rely on both the vegetative and reproductive characteristics of plant species. Taxonomists frequently hold varying perspectives on these descriptions, leading to a lack of widespread consensus within the scientific community ... [...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] |
Bivalve
Bivalvia () or bivalves, in previous centuries referred to as the Lamellibranchiata and Pelecypoda, is a class (biology), class of aquatic animal, aquatic molluscs (marine and freshwater) that have laterally compressed soft bodies enclosed by a calcified exoskeleton consisting of a hinged pair of half-bivalve shell, shells known as valve (mollusc), valves. As a group, bivalves have no head and lack some typical molluscan organs such as the radula and the odontophore. Their gills have evolved into ctenidium (mollusc), ctenidia, specialised organs for feeding and breathing. Common bivalves include clams, oysters, Cockle (bivalve), cockles, mussels, scallops, and numerous other family (biology), families that live in saltwater, as well as a number of families that live in freshwater. Majority of the class are benthic filter feeders that bury themselves in sediment, where they are relatively safe from predation. Others lie on the sea floor or attach themselves to rocks or other h ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mollusc
Mollusca is a phylum of protostome, protostomic invertebrate animals, whose members are known as molluscs or mollusks (). Around 76,000 extant taxon, extant species of molluscs are recognized, making it the second-largest animal phylum after Arthropoda. The number of additional fossil species is estimated between 60,000 and 100,000, and the proportion of undescribed species is very high. Many taxa remain poorly studied. Molluscs are the largest marine biology, marine phylum, comprising about 23% of all the named marine organisms. They are highly diverse, not just in size and anatomical structure, but also in behaviour and habitat, as numerous groups are freshwater mollusc, freshwater and even terrestrial molluscs, terrestrial species. The phylum is typically divided into 7 or 8 taxonomy (biology), taxonomic class (biology), classes, of which two are entirely extinct. Cephalopod molluscs, such as squid, cuttlefish, and octopuses, are among the most neurobiology, neurologi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Monotypic
In biology, a monotypic taxon is a taxonomic group (taxon) that contains only one immediately subordinate taxon. A monotypic species is one that does not include subspecies or smaller, infraspecific taxa. In the case of genera, the term "unispecific" or "monospecific" is sometimes preferred. In botanical nomenclature, a monotypic genus is a genus in the special case where a genus and a single species are simultaneously described. Theoretical implications Monotypic taxa present several important theoretical challenges in biological classification. One key issue is known as "Gregg's Paradox": if a single species is the only member of multiple hierarchical levels (for example, being the only species in its genus, which is the only genus in its family), then each level needs a distinct definition to maintain logical structure. Otherwise, the different taxonomic ranks become effectively identical, which creates problems for organizing biological diversity in a hierarchical syste ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
