|
Medionidus
''Medionidus'' is a genus of freshwater mussels, aquatic bivalve mollusks in the family 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 .... Species within the genus ''Medionidus'' * '' Medionidus acutissimus'' (Alabama moccasinshell) * '' Medionidus conradicus'' * '' Medionidus parvulus'' (Coosa moccasinshell) * '' Medionidus penicillatus'' (gulf moccasinshell) * '' Medionidus simpsonianus'' (Ochlockonee moccasinshell) * '' Medionidus walkeri'' Bivalve genera Taxonomy articles created by Polbot {{Unionidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Medionidus
''Medionidus'' is a genus of freshwater mussels, aquatic bivalve mollusks in the family 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 .... Species within the genus ''Medionidus'' * '' Medionidus acutissimus'' (Alabama moccasinshell) * '' Medionidus conradicus'' * '' Medionidus parvulus'' (Coosa moccasinshell) * '' Medionidus penicillatus'' (gulf moccasinshell) * '' Medionidus simpsonianus'' (Ochlockonee moccasinshell) * '' Medionidus walkeri'' Bivalve genera Taxonomy articles created by Polbot {{Unionidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Medionidus Simpsonianus
The Ochlockonee moccasinshell (''Medionidus simpsonianus'') is a species of freshwater mussel, an aquatic bivalve mollusk in the family Unionidae, the river mussels. This species is endemic to the United States. Its natural habitat is rivers. Original description ''Medionidus simpsonianus'' was described as a species by Bryant Walker in 1905 in '' The Nautilus'' journal: References This article incorporates public domain text - a public domain work by Bryant Walker Bryant Walker (1856–1936) was an American malacologist who specialized in the non-marine Mollusca. He mainly studied the freshwater mollusks of the USA, in particular those of Michigan. He published many papers on the Unionida, an order of fres ... (1856-1936, U.S.A.) from reference. {{Taxonbar, from=Q3016195 Medionidus Molluscs of the United States Molluscs described in 1905 ESA endangered species Taxonomy articles created by Polbot ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Medionidus Parvulus
''Medionidus parvulus'', the Coosa moccasinshell, is a rare species of freshwater mussel in the family Unionidae, the river mussels. This aquatic bivalve mollusk is native to Georgia and Tennessee in the United States, and has been extirpated from the state of Alabama.''Medionidus parvulus''. The Nature Conservancy. It is a federally listed of the United States.USFWS Endangered status for ei ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Medionidus Acutissimus
''Medionidus acutissimus'', the Alabama moccasinshell, is a species of freshwater mussel in the family Unionidae, the river mussels. It is native to Alabama, Mississippi, Georgia, Tennessee, and possibly Florida.''Medionidus acutissimus''. The Nature Conservancy. It is a federally listed threatened species of the United States.USFWS Endangered status for eight freshwater mussels and threatened status for three freshwater mussels in the Mobile River Drainage. ''Federal Register'' March 17, 1993. This [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Medionidus Penicillatus
''Medionidus penicillatus'', the gulf moccasinshell, is a rare species of freshwater mussel in the family Unionidae, the river mussels. This aquatic bivalve mollusk is native to Alabama, Florida, and Georgia in the United States, where it is in decline and has been extirpated from most of the rivers it once inhabited.''Medionidus penicillatus''. The Nature Conservancy. It is a federally listed of the United States.USFWS [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Medionidus Conradicus
''Medionidus conradicus'' is a species of freshwater mussel, an aquatic bivalve mollusk in the family Unionidae, the river mussels. This species is endemic to the drainages of the Cumberland River and the Tennessee River in the 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 territorie .... References Molluscs of the United States conradicus Bivalves described in 1834 Taxonomy articles created by Polbot {{Unionidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Medionidus Walkeri
''Medionidus walkeri'' is a species of freshwater mussel, an aquatic bivalve mollusk in the family Unionidae, the river mussels. This species is endemic to the 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 territorie .... References Molluscs of the United States walkeri Molluscs described in 1897 ESA threatened species Taxonomy articles created by Polbot {{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] |
Genus
Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus comes above species and below family (taxonomy), 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 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 ... [...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, and cli ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bivalve
Bivalvia (), in previous centuries referred to as the Lamellibranchiata and Pelecypoda, is a class of marine and freshwater molluscs that have laterally compressed bodies enclosed by a shell consisting of two hinged parts. As a group, bivalves have no head and they lack some usual molluscan organs, like the radula and the odontophore. They include the clams, oysters, cockles, mussels, scallops, and numerous other families that live in saltwater, as well as a number of families that live in freshwater. The majority are filter feeders. The gills have evolved into ctenidia, specialised organs for feeding and breathing. Most bivalves bury themselves in sediment, where they are relatively safe from predation. Others lie on the sea floor or attach themselves to rocks or other hard surfaces. Some bivalves, such as the scallops and file shells, can swim. The shipworms bore into wood, clay, or stone and live inside these substances. The shell of a bivalve is composed of calc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
