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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 ...
Bivalvia (/ b aɪ ˈ v æ l v i ə /) or bivalves, in previous centuries referred to as the Lamellibranchiata and Pelecypoda, is a class of aquatic molluscs (marine and freshwater) that have laterally compressed soft bodies enclosed by a calcified exoskeleton consisting of a hinged pair of half-shells known as valves.
The two major classes of molluscs have representatives in freshwater: the gastropods (snails) and the bivalves (freshwater mussels and clams.) It appears that the other classes within the Phylum Mollusca -the cephalopods, scaphopods, polyplacophorans, etc. - never made the transition from a fully marine environment to a freshwater environment.
An assortment of shells of marine bivalves and a few marine gastropods found on a beach in Wales. In May 2010, a new taxonomy of the Bivalvia was published in the journal Malacologia. The 2010 taxonomy is known as the Taxonomy of the Bivalvia (Bouchet, Rocroi, Bieler, Carter & Coan, 2010) [citation needed].
Murphy, Richard C. 1983. The introduced bivalve, Mercenaria mercenaria in a shallow coastal ecosystem: 1) Factors affecting its distribution, 2) Contribution to benthic community metabolism. Ph.D. Dissertation. University of Southern California. Murphy, Richard C. and James N. Kremer. 1983.
Unionidae burrow into the substrate, with their posterior margins exposed. They pump water through the incurrent aperture, obtaining oxygen and food. They remove phytoplankton and zooplankton, as well as suspended bacteria, fungal spores, and dissolved organic matter.
As Joseph Rosewater [1] commented in 1961: "“The Pinnidae have considerable economic importance in many parts of the world. They produce pearls of moderate value. In the Mediterranean area, material made from the holdfast or byssus of Pinna nobilis Linné has been utilized in the manufacture of clothing for many centuries: gloves, shawls, stockings and cloaks.
Bivalves in mythology: The goddess of love floats to shore on one valve of a scallop shell, in The Birth of Venus, by Sandro Botticelli c. 1485–1486.. WikiProject Bivalves is a group of people who are working on organizing, improving and expanding Wikipedia's coverage of topics that relate to bivalve mollusks: clams, mussels, oysters, scallops and all of their relatives with two hinged ...