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Cristaria (bivalve)
Cristaria is a genus of freshwater mussels or pearl mussels, aquatic bivalve mollusks in the family Unionidae. Species Species in the genus ''Cristaria'' include: * '' Cristaria beirensis'' * ''Cristaria plicata ''Cristaria plicata'', the cockscomb pearl mussel, is a freshwater mussel, an aquatic bivalve mollusk in the family Unionidae. Distribution This species is native to northeast Asia and now also present in parts of southeast Asia. This large mu ...'' * '' Cristaria radiata'' * '' Cristaria tenuis'' * '' Cristaria truncata'' Human relevance In China, one of the species in this genus, ''Cristaria plicata'' is "one of the most important freshwater mussels for pearl production" in the country. It is also used for medicinal purposes.. Accessed 2014.09.06 References Unionidae Bivalve genera {{Unionidae-stub ... [...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] |
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] |
Mollusk
Mollusca is the second-largest phylum of invertebrate animals after the Arthropoda, the members of which are known as molluscs or mollusks (). Around 85,000 extant species of molluscs are recognized. The number of fossil species is estimated between 60,000 and 100,000 additional species. The proportion of undescribed species is very high. Many taxa remain poorly studied. Molluscs are the largest marine phylum, comprising about 23% of all the named marine organisms. Numerous molluscs also live in freshwater and terrestrial habitats. They are highly diverse, not just in size and anatomical structure, but also in behaviour and habitat. The phylum is typically divided into 7 or 8 taxonomic classes, of which two are entirely extinct. Cephalopod molluscs, such as squid, cuttlefish, and octopuses, are among the most neurologically advanced of all invertebrates—and either the giant squid or the colossal squid is the largest known invertebrate species. The gas ... [...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] |
Cristaria Beirensis
''Cristaria'' is the scientific name of two genera of organisms and may refer to: * ''Cristaria'' (bivalve), a genus of mussels in the family Unionidae * ''Cristaria'' (plant), a genus of plants in the family Malvaceae {{Genus disambiguation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cristaria Plicata
''Cristaria plicata'', the cockscomb pearl mussel, is a freshwater mussel, an aquatic bivalve mollusk in the family Unionidae. Distribution This species is native to northeast Asia and now also present in parts of southeast Asia. This large mussel is listed as endangered in South Korea. Biology The mitochondrial genome Mitochondrial DNA (mtDNA or mDNA) is the DNA located in mitochondria, cellular organelles within eukaryotic cells that convert chemical energy from food into a form that cells can use, such as adenosine triphosphate (ATP). Mitochondrial D ... of this species was sequenced in 2011 or 2012. Human uses In China, this species is significant as "one of the most important freshwater mussels for pearl production in the country." It is used for medicinal purposes. References * Bogan, A. (2013). "FADA Bivalvia: World checklist of Freshwater Bivalvia Species" (version Jan 2013). In: ''Species 2000 & ITIS Catalogue of Life,'' 11 March 2013 (Roskov, Y.et al., e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cristaria Radiata
''Cristaria'' is the scientific name of two genera of organisms and may refer to: * ''Cristaria'' (bivalve), a genus of mussels in the family Unionidae * ''Cristaria'' (plant), a genus of plants in the family Malvaceae {{Genus disambiguation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cristaria Tenuis
''Cristaria'' is the scientific name of two genera of organisms and may refer to: * ''Cristaria'' (bivalve), a genus of mussels in the family Unionidae * ''Cristaria'' (plant), a genus of plants in the family Malvaceae {{Genus disambiguation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cristaria Truncata
''Cristaria'' is the scientific name of two genera of organisms and may refer to: * ''Cristaria'' (bivalve), a genus of mussels in the family Unionidae * ''Cristaria'' (plant), a genus of plants in the family Malvaceae {{Genus disambiguation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
