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Topics related to "Bivalvia"

scallop
scallop or pecten, marine bivalve mollusk. Like its close relative the oyster, the scallop has no siphons, the mantle being completely open, but it differs from other mollusks in that both mantle edges have a row of steely blue "eyes" and tactile projections. The rounded shells have radia... Read more
bivalve
bivalve aquatic mollusk of the class Pelecypoda ( "hatchet-foot" ) or Bivalvia, with a laterally compressed body and a shell consisting of two valves, or movable pieces, hinged by an elastic ligament. Bivalves, which include clams, cockles, mussels, oysters, and scallops, are an important food so... Read more
giant clam
giant clam common name for the largest bivalve mollusk in the world, Tridacna gigas, also known as the bear's paw clam. The giant clam may weigh over 500 lb (225 kg) and attain a length of over 4 ft (120 cm). The heavy shell is coarsely fluted and toothed. Giant clams are found in the South Pacif... Read more
mussel
mussel edible freshwater or marine bivalve mollusk. Mussels are able to move slowly by means of the muscular foot. They feed and breathe by filtering water through extensible tubes called siphons; a large mussel filters 10 gal (38 liters) of water per day. The close-fitting shells protect the mus... Read more
oyster
oyster edible bivalve mollusk found in beds in shallow, warm waters of all oceans. The shell is made up of two valves, the upper one flat and the lower convex, with variable outlines and a rough outer surface. Since the oyster spends most of its life (except for the free-swimming larval stage) at... Read more
clam
clam common name for certain bivalve mollusks, especially for marine species that live buried in mud or sand and have valves (the two pieces of the shell) of equal size. The oval valves, which cover the right and left sides of the animal, are hinged together at the top by an elastic ligament. Cla... Read more
cockle
cockle common name applied to the heart-shaped, jumping or leaping marine bivalve mollusks, belonging to the order Eulamellibranchia. The brittle shells are of uniform size, are obliquely spherical, and possess distinct radiating ridges, or ribs, which aid the animal in gripping the sand. The man... Read more
Mollusca
Mollusca , taxonomic name for the one of the largest phyla of invertebrate animals (Arthropoda is the largest) comprising more than 50,000 living mollusk species and about 35,000 fossil species dating back to the Cambrian period. Mollusks are soft-bodied, and most have a prominent shell. The members... Read more

Encyclopedia entries related to "Bivalvia"

Bivalves
Encyclopedia entry from: The Gale Encyclopedia of Science Bivalves Bivalve molluscs belong to the class Bivalvia (or Lamellibranchia) of the phylum Mollusca. Known by...bivalves have been described. The main divisions of the Bivalvia are the Protobranchia (the primitive nutshells), the Filibranchia...
bivalve
Book article from: The Columbia Encyclopedia, Sixth Edition ...bivalve aquatic mollusk of the class Pelecypoda ( "hatchet-foot" ) or Bivalvia, with a laterally compressed body and a shell consisting of two valves...Bivalves are classified in the phylum Mollusca , class Pelecypoda or bivalvia.
geoduck
Book article from: The Columbia Encyclopedia, Sixth Edition ...with a shovel. Digging geoducks is considered a sport in Washington, where there is a limit of three per day. Geoducks are classified in the phylum Mollusca , class Pelecypoda or bivalvia, order Eulamellibranchia, family Saxicavidae.
Mollusks
Encyclopedia entry from: The Gale Encyclopedia of Science ...includes snails with a coiled shell, and others lacking a shell. The next largest group consists of the bivalves (class Bivalvia), the chitons (class Amphineura), and octopus and squid, (class Cephalopoda). The other classes of mollusks are the...
cockle
Book article from: World Encyclopedia ...x2013;24 strong, radiating ribs. There are c. 200 recognized species, many of which are edible. Average length: 4–8cm (1.5–3in). Class Bivalvia; family Cardiidae; species include Cardium aculeatum.
scallop
Book article from: The Columbia Encyclopedia, Sixth Edition ...The giant scallop, found in deeper waters from Labrador to New Jersey, attains a length of 5 in. (12.7 cm). Scallops are classified in the phylum Mollusca , class Pelecypoda or bivalvia, order Filibranchia, family Pectinidae.
giant clam
Book article from: The Columbia Encyclopedia, Sixth Edition ...deep within the tissues. The clam uses the algae as a supplementary or perhaps even a major source of food. Tridacna gigas is classified in the phylum Mollusca , class Pelecypoda or bivalvia, order Eulamellibranchia, family Tridacnidae.
molluscs
Book article from: The Oxford Companion to Ships and the Sea ...handle these at your peril! Bivalves are mostly sedentary bottom-dwellers either living burrowed in sand or mud like clams (Bivalvia), or anchored to rocks like mussels (e.g. Mytilus spp.) and oysters. They feed on particles they extract from the...
shipworm
Book article from: The Columbia Encyclopedia, Sixth Edition ...enormous damage to piers and ships, and although they are deterred by chemicals, control is still a problem. Shipworms are classified in the phylum Mollusca , class Pelecypoda or bivalvia, order Eulamellibranchia, family Teredinidae.
oyster
Book article from: The Columbia Encyclopedia, Sixth Edition ...The great pearl oyster, from which the pearl is obtained, is a large (12-in./30.5-cm) tropical species. Oysters are classified in the phylum Mollusca , class Pelecypoda or bivalvia, order Filibranchia, family Ostreidae.

Dictionary entries related to "Bivalvia"

Bivalvia
Book article from: A Dictionary of Zoology Bivalvia ( Pelecypoda , Lamellibranchia ; phylum Mollusca ) A class of molluscs in which the body is laterally compressed, there is no...
Ostreina
Book article from: A Dictionary of Zoology Ostreina ( oysters ; class Bivalvia , order Pterioda ) A suborder of epifaunal , cemented or free-living bivalves in which the adults are non- byssate , and the...
Pelecypoda
Book article from: A Dictionary of Zoology Pelecypoda See BIVALVIA .
monomyarian
Book article from: A Dictionary of Zoology monomyarian Applied to the condition in certain Bivalvia in which only the posterior adductor muscle is present.
Myoida
Book article from: A Dictionary of Zoology Myoida (phylum Mollusca , class Bivalvia ) An order of bivalves which are not equilateral in shape and in which the valves may be equal or unequal. The shells are thin...
Nuculoida
Book article from: A Dictionary of Zoology Nuculoida (class Bivalvia , subclass Palaeotaxodonta ) An order of bivalves which have a taxodont hinge and equivalve, aragonitic shells. They are isomyarian...
Mollusca
Book article from: A Dictionary of Zoology ...coelomate (see COELOM ) invertebrates comprising classes which are morphologically quite diverse, including the Amphineura , Bivalvia , Cephalopoda , Gastropoda , Monoplacophora , and Scaphopoda . They are fundamentally bilaterally symmetrical , with metameric...
filibranchiate
Book article from: A Dictionary of Zoology filibranchiate Applied to a type of gill, common to Bivalvia , that is composed of sheets of filaments forming a ‘W’ shape.
demibranch
Book article from: A Dictionary of Zoology demibranch The V-shaped structure of gills that is common to Bivalvia . It consists of two lamellae containing gill filaments; inner and outer demibranchs are joined by the ctenidial axis , giving the gill a typical W shape.
Cephalopoda
Book article from: A Dictionary of Zoology ...from the Greek kephale , head, and pod -, foot), a class of molluscs, exclusively marine, that are related to the Bivalvia and Gastropoda . Cephalopods are bilaterally symmetrical and have a circlet of prehensile tentacles. The exhalation of a current...

Related newspaper, magazine, and trade journal articles from HighBeam Research

Thermal potentiation and mineralogical evolution in the bivalvia (Mollusca)
Magazine article from: Journal of Paleontology; 11/1/1998; ; 700+ words ; ...Phanerozoic mineralogical evolution in the Bivalvia appears to be thermal potentiation of...promoted mineralogical evolution in the Bivalvia by kinetically facilitating (potentiating...EVOLUTION has followed a general trend in the Bivalvia from wholly aragonite to mixed aragonite...
Poliquetos epibiontes de Pinctada imbricata Roding, 1798 (Bivalvia: Pteriidae) en el Golfo de Cariaco, Venezuela.
Magazine article from: Interciencia; 5/1/2003; ; 700+ words ; ...valvas del bivalvo Pinctada imbricata (Bivalvia: Pteriidae) en el Golfo de Cariaco...were collected on Pinctada imbricata (Bivalvia: Pteriidae) in Gulf of Cariaco, Venezuela...valvas do bivalvo Pinctada imbricata (Bivalvia: Pteriidae) no Golfo de Cariaco, Venezuela...
Pattern of growth rate around aperture and shell form in Bivalvia: A theoretical morphological study
Magazine article from: Paleobiology; 10/1/2003; ; 700+ words ; ...morphogenesis were studied in nine species of Bivalvia from the viewpoint of theoretical morphology...the properties of shell coiling in the Bivalvia. The effects of ontogenetic change in...surface of a theoretical model. In the Bivalvia, the coiling axis does not always lie...
Freshwater mussel (Bivalvia: Unionidae) survey of the Wakarusa River basin, Kansas.
Magazine article from: Transactions of the Kansas Academy of Science; 9/22/2006; ; 700+ words ; ...years have past since the last extensive freshwater mussel (Bivalvia: Unionidae) survey of the Wakarusa River basin. During that...River; Clinton Reservoir INTRODUCTION Freshwater mussels (Bivalvia: Unionidae) are a vital component of stream ecosystems...
Northern redistribution of freshwater pearly mussels (Bivalvia: Unionoidea) during Wisconsin deglaciation in the Sothern Glacial Lake Agassiz region: A review
Magazine article from: The American Midland Naturalist; 7/1/1997; ; 700+ words ; ...chronology of the reinvasion of freshwater pearly mussels (Bivalvia: Unionoidea) into the southern Glacial Lake Agassiz region...deglaciation on the distribution of freshwater pearly mussels (Bivalvia: Unionoidea) in the Canadian Interior and Great Lakes basins...
THE EVOLUTIONARY AND BIOGEOGRAPHIC ORIGINS OF THE ENDEMIC PECTINIDAE (MOLLUSCA: BIVALVIA) OF THE GALÁPAGOS ISLANDS
Magazine article from: Journal of Paleontology; 9/1/2007; ; 700+ words ; ...of five species of shallow-water scallops (Mollusca: Bivalvia: Pectinidae) that presently live in the Galpagos islands...highly endemic compared to other marine organisms and to the Bivalvia as a whole (Table 1); 3) the largely calcitic rather than...
Impact of zebra and quagga mussels (Dreissena spp.) on freshwater unionids (Bivalvia: Unionidae) in the Detroit River of the Great Lakes
Magazine article from: The American Midland Naturalist; 10/1/1998; ; 700+ words ; ...mussel (Dreissena spp.) infestation on unionids, unionids (Bivalvia: Unionidae) were sampled in the Detroit River in 1982-1983...Schloesser and Kovalak, 1991) shells of native unionids (Bivalvia: Unionidae) (Hebert et al., 1989). Within a short time...
Freshwater mussel (Bivalvia: Unionidae) survey of the Brouilletts Creek basin in Illinois and Indiana.
Magazine article from: Proceedings of the Indiana Academy of Science; 8/15/2005; ; 700+ words ; ...occur in the basin. Keywords: Mollusca, survey, stream habitat, Wabash River ********** Freshwater mussels (Bivalvia: Unionidae) are a vital component of stream ecosystems (Strayer & Smith 2003). Their sensitivity to stream habitats...
Allozyme identification of mussels (Bivalvia: Mytilus) on the pacific coast of South America.
Magazine article from: Journal of Shellfish Research; 12/1/2005; ; 700+ words ; ...coast, taxonomic status INTRODUCTION For many years, the taxonomy of individuals belonging to the genus Mytilus (Mollusca: Bivalvia) has been subject to controversy, because the accurate establishment of the taxonomic status of their members has proved...
Reproductive cycle of Quadrula metanevra (Bivalvia: unionidae) in the Pickwick Dam tailwater of the Tennessee river
Magazine article from: The American Midland Naturalist; 4/1/1999; ; 700+ words ; ...reproductive biology of a species is fundamental to understanding its life history. Generalities of reproduction in the Unionidae (Bivalvia: Unionoidea) have been understood since the late 19th and early 20th centuries (Sterki, 1898; Lefevre and Curtis, 1910...