Argopecten irradians

Argopecten irradians, formerly classified as Aequipecten irradians, common names the "Atlantic bay scallop" or "bay scallop", is an edible species of saltwater clam, a scallop, a marine bivalve mollusk in the family Pectinidae, the scallops.

Bay scallop fishery

This species of scallop used to support a large fishery on the East Coast of the USA, but since the 1950s the fishery of the wild scallops has decreased greatly. This decrease is apparently the result of several negative influences, one of which is a reduction in sea grasses (to which bay scallop spat attach) due to increased coastal development and concomitant nutrient runoff. Another possible factor is reduction of sharks from overfishing. A variety of sharks used to feed on rays, which are a main predator of bay scallops. With the shark population reduced, in some places almost eliminated, the rays have been free to dine on scallops to the point of greatly decreasing their numbers.

By contrast, the Atlantic sea scallop (Placopecten magellanicus) is at historically high levels of abundance, after recovery from overfishing.

Bay scallops are now raised in aquaculture in Florida. [1] They were introduced into China for the 1980s and are the basis of a very vibrant aquaculture industry in that country [2]

Subspecies

This species has 5 different subspecies: [3]

• Argopecten irradians amplicostatus (Dall, 1898) [4]
• Argopecten irradians concentricus (Say, 1822) [5]
• Argopecten irradians irradians (Lamarck, 1819) [6]
• Argopecten irradians sablensis (Clarke, 1965) - a fossil subspecies
• Argopecten irradians taylorae Petuch, 1987 - the southern bay scallop [7]

See also

• Scallop

References