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Unionidae
Duck mussel, Anodonta anatina
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Bivalvia
Subclass: Paleoheterodonta
Order: Unionoida
Family: Unionidae
Genera

See text for genera and species. Duck mussel, Anodonta anatina, is a species of freshwater Mussel of the family Unionidae. Duck mussel, Anodonta anatina, is a species of freshwater Mussel of the family Unionidae. Molluscs are animals belonging to the phylum Mollusca. There are around 250000 extant Species within the phylum with an estimated 70000 Bivalves are Molluscs belonging to the class Bivalvia. They have two-part shells and typically both valves are symmetrical along the hinge line Paleoheterodonta is a Mollusc Subclass of the Bivalvia. It contains the extant order Unionoida (freshwater mussels and the prehistoric Unionoida is an order within the class Bivalvia. Members of the order Unionoida which includes the pearly freshwater Mussels are found on six continents A genus (plural genera from Γένος Latin genus "descent family type gender" is a low-level Taxonomic

Unionidae is a family of freshwater mussels distributed world-wide, but most diverse in North America with about 297 recognized taxa[1]. In Biological classification, family ( Latin The common name mussel is used for members of several different families of Clams or Bivalve Molluscs, from both saltwater and freshwater habitats Freshwater mussels occupy a wide range of habitats, but most often occupy lotic waters. The shell is equivalve and nacreous and has a thick periostracum. The periostracum is a thin organic coating or "skin" which is the outermost layer of the shell of many Mollusks for example the shells of many bivalves The hinge mostly has two cardinals and two posterior lamellar teeth. In fields of Anatomy, anatomical terms of location are descriptive terms to help identify relative positions or directions within a species

Unionidae burrow into the substrate, with their posterior margins exposed. They pump water through the incurrent aperture, obtaining oxygen and food. Oxygen (from the Greek roots ὀξύς (oxys (acid literally "sharp" from the taste of acids and -γενής (-genēs (producer literally begetteris the

Unionidae are distinguished by a unique and complex life cycle. Most Unionids are of separate sex (although some species, such as Elliptio complanata, are known to be hermaphroditic). UserPolbot. --> Elliptio is a Genus of medium-sized to large-sized freshwater mussels Aquatic A hermaphrodite is an organism having both male and female reproductive organs The sperm is ejected from the mantle cavity through the male’s excurrent aperture and taken into the female's mantle cavity through the incurrent aperture. The mantle is an important part of the anatomy of Molluscs It is the dorsal body wall which covers the visceral mass Fertilized eggs move from the gonads to the gills (marsupia) where they further ripen and metamorph into glochidia, the first larval stage. Glochidium is Larva of big freshwater Bivalves See also Veliger Trochophore Mature glochidia are released by the female and then attach to the gills, fins or skin of a host fish. A gill is an anatomical structure found in many aquatic organisms Fish are aquatic Vertebrate animals that are typically ectothermic (previously Cold-blooded) covered with scales, and equipped with two A cyst is quickly formed around the glochidia and they stay on the fish for several weeks or months before they fall off as juvenile mussels which bury themselves in the sediment. A juvenile is an individual Organism that has not yet reached its Adult form Sexual maturity or size The common name mussel is used for members of several different families of Clams or Bivalve Molluscs, from both saltwater and freshwater habitats

Genera and species

References

  1. ^ Williams, J. UserPolbot. --> Alasmidonta is a Genus of freshwater Mussel, an Aquatic Bivalve Anodonta is a Genus of medium-sized to large freshwater Mussels aquatic Bivalve Molluscs in the family Unionidae Cucumerunio websteri delli is a freshwater Mussel, endemic to the North Island of New Zealand, north of the city of Auckland Cucumerunio websteri websteri is a freshwater Mussel, endemic to the North Island of New Zealand. UserPolbot. --> Elliptio is a Genus of medium-sized to large-sized freshwater mussels Aquatic UserPolbot. --> Epioblasma is a genus of Bivalve in the Unionidae family The New Zealand freshwater mussel, Hyridella menziesi, is a freshwater Bivalve Mollusc, in the family Unionidae. The New Zealand freshwater mussel, Hyridella menziesi, is a freshwater Bivalve Mollusc, in the family Unionidae. UserPolbot. --> Lampsilis is a genus of Bivalve in the Unionidae family UserPolbot. --> Lasmigona is a genus of Bivalve in the Unionidae family The depressed river mussel or compressed river mussel, Pseudanodonta complanata, is a Species of Freshwater Mussel. The depressed river mussel or compressed river mussel, Pseudanodonta complanata, is a Species of Freshwater Mussel. UserPolbot. --> Pyganodon is a genus of Bivalve in the Unionidae family The Chinese pond mussel, Eastern Asiatic freshwater clam or swan-mussel, Sinanodonta woodiana, is a Species of Freshwater UserPolbot. --> Strophitus is a genus of Bivalve in the Unionidae family Unio is a Genus of medium-sized freshwater Mussels which have pearly interiors D, M. L. Warren, K. S. Cummings, J. L. Harris, and R. J. Neves (1993). "Conservation Status of Freshwater Mussels of the United States and Canada". Fisheries 18 (9): 6–22. doi:10.1577/1548-8446(1993)018<0006:CSOFMO>2.0.CO;2. A digital object identifier ( DOI) is a permanent identifier given to an Electronic document.  

External links

Dr Arthur William Baden Powell CBE (4 April 1901 - 1 July 1987 was a New Zealand malacologist, naturalist and Palaeontologist, a HarperCollins is a Publishing company owned by News Corporation. Year 1979 ( MCMLXXIX) was a Common year starting on Monday (link displays the 1979 Gregorian calendar)
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