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bivalves    音标拼音: [b'ɑɪv,ælvz]
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  • Bivalvia - Wikipedia
    The taxonomic term Bivalvia was first used by Linnaeus in the 10th edition of his Systema Naturae in 1758 to refer to animals having shells composed of two valves [3] More recently, the class was known as Pelecypoda, meaning " axe -foot" (based on the shape of the foot of the animal when extended) The name "bivalve" is derived from the Latin bis, meaning 'two', and valvae, meaning 'leaves of
  • Bivalves - Types, Examples, Characteristics, Anatomy, Diet, Habitat
    Bivalves possess paired gills of hollow, tubular, thin-walled filaments to facilitate gas exchange 6 Since these mollusks are primarily inactive, their respiratory demands are low, and thus, some freshwater species slightly gape their shells to allow the air to enter Digestive Their digestive tract includes an esophagus, stomach, and intestine
  • Bivalve | Definition, Characteristics, Species, Classification, Facts . . .
    Bivalve, (class Bivalvia), any of more than 15,000 species of clams, oysters, mussels, scallops, and other members of the phylum Mollusca characterized by a shell that is divided from front to back into left and right valves The valves are connected to one another at a hinge Primitive bivalves
  • What is a bivalve mollusk? - NOAAs National Ocean Service
    What is a bivalve mollusk? Bivalve mollusks (e g , clams, oysters, mussels, scallops) have an external covering that is a two-part hinged shell that contains a soft-bodied invertebrate
  • What Are Bivalved Animals and How Do They Live?
    Defining Bivalves Bivalves are classified within the phylum Mollusca, but they are distinguished by the lack of a defined head and the rasping tongue-like organ called a radula Their protective exoskeleton is composed of two lateral valves, typically made of calcium carbonate, which are joined along the dorsal edge by an elastic hinge ligament
  • What Are Bivalves? 5 Examples of These Amazing Creatures
    Bivalves are incredibly important animals for the health of the ocean To learn more about these amazing animals, read about them here
  • Bivalve shell - Wikipedia
    Two whole shells, one closed and one open, of the marine bivalve Abra alba Live marine venerid cockles, Austrovenus stutchburyi from New Zealand A bivalve shell is the enveloping exoskeleton or shell of a bivalve mollusc, composed of two hinged halves or valves The two half-shells, called the "right valve" and "left valve", are joined by a ligament and usually articulate with one another
  • Bivalvia | INFORMATION | Animal Diversity Web - ADW
    Bivalves can also cause economic damage The glochidia larvae of some freshwater mussels can be serious parasites of fish, and some marine bivalves bore through wood, causing damage to wooden ships, pilings, and other wood structures Bivalves dislodged from beneath a single rock in a coral lagoon in the South Pacific
  • Bivalve Mollusks - Characteristics, Habitat, and Examples
    Explore the world of bivalve mollusks, including mussels, oysters, cockles, and clams Discover their unique characteristics, diverse habitats, and examples of popular species
  • The Bivalvia - University of California Museum of Paleontology
    Bivalves lack a head, radula, and jaws Although the plesiomorphic feeding state for bivalves is probably deposit feeding utilizing long labial palps, the ctenidia provide an effective filter feeding mechanism in most taxa with numerous levels or grades of organization In most bivalves, the mantle pallial cavity contains a pair of very large gills that are used to capture food particles





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