Pectinidae – Scallops

Description

This large and diverse group of bivalves has a single, fused adductor muscle, and a hinge bearing a socket-like arrangement. The foot is greatly reduced and no siphons have developed along the mantle edge. All scallops possess well developed but tiny eyes set along the edge of the fleshy mantle (See link at right, below; Giant Rock Scallop). Scallops respond instantly to changes in light intensity or nearby moving objects.

Some species of scallops are renowned for their ability to swim. A scallop swims by clapping its valves to ingest water. When the valves close, it then propels water at great force near the hinge, by means of the velum. The velum is a curtain-like fold of the mantle that is used to direct the flow of expelled water around the hinge, much like a pair of movable jets, or lips. Normal swimming is in the direction of the valve opening, but the scallop can sharply change direction with its velum. 
 
Species in the genus Chlamys are sedentary and live attached by a byssus under rocks in intertidal areas. Scallops are found in all seas, from shallow water to great depths.
 
Classification
Class: Bivalvia
Subclass: Heterodonta
Order: Pterioida
Superfamily: Pectinacea
Family: Pectinidae
 
Major Genera

 

  • Genus: Aequipecten
  • Genus: Amusium
  • Genus: Argopecten
  • Genus: Chlamys
  • Genus: Cyclopecten
  • Genus: Cryptopecten
  • Genus: Delectopecten
  • Genus: Hinnites
  • Genus: Leptopecten
  • Genus: Lyropecten
  • Genus: Patinopecten
  • Genus: Pecten
  • Genus: Placopecten
  • Genus: Propeamussium
  • Genus: Pseudamussium

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Adamussium colbecki Aequipecten commutatus Aequipecten flabellum Aequipecten glyptus Aequipecten heliacus Aequipecten lineolaris Aequipecten opercularis Aequipecten tehuelchus
Amusium japonicum Amusium pleuronectes Anguipecten gregoryi Anguipecten lamberti Anguipecten pacificus Anguipecten picturatus Anguipecten simoneae Anguipecten superbus
Annachlamys flabellatus Annachlamys iredalei Annachlamys kuhnholtzi Annachlamys reevei Annachlamys striatula Antillipecten antillarum Argopecten gibbus Argopecten irradians
Argopecten noronhensis Argopecten nucleus Argopecten purpuratus Argopecten ventricosus Austrochlamys natans Azumapecten farreri Azumapecten ruschenbergerii Bractechlamys adorabilis
Bractechlamys corallinoides Bractechlamys langfordi Bractechlamys nodulifera Bractechlamys oweni Bractechlamys vexillum Caribachlamys mildredae Caribachlamys ornatus Caribachlamys pellucens
Caribachlamys sentis Chlamys albida Chlamys amandi Chlamys behringiana Chlamys chosenica Chlamys cytherea Chlamys hastata Chlamys islandica
Chlamys rosealbus Chlamys rubida Chlamys strategus Mimachlamys cloacata Mimachlamys erycina Complicachlamys wardiana Coralichlamys madreporarum Crassadoma gigantea
Cryptopecten bernardi Cryptopecten bullatus Cryptopecten nux Cryptopecten phrygium Cryptopecten vesiculosus Decatopecten amiculum Decatopecten plica Decatopecten radula
Delectopecten alcocki Delectopecten fosterianus Delectopecten macrocheiricola Delectopecten musorstomi Delectopecten polyleptus Delectopecten vancouverensis Delectopecten vitreus Delectopecten zacae
Dentamussium obliteratum Equichlamys bifrons Euvola chazaliei Euvola galapagensis Euvola laurenti Euvola marensis Euvola papyracea Euvola perula