The class Bivalvia is comprised of freshwater and marine mollusks including clams, oysters, mussels and scallops. All bivalves are laterally compressed and posses a shell with two valves, hinged dorsally, that completely enclose the body. They are a common and diverse class with over 30,000 described species. They are distributed throughout the world's oceans and found in a variety of habitats. Some bivalves are epifaunal, attaching themselves to solid surfaces by means of a byssus or organic cementation; and others are infaunal, burying themselves in sand or other sediments. Many of the Bivalves in NEMESIS have been introduced through aquaculture imports and commercial shipping. The impacts of exotic bivalves are varied, with many having no reported impact, but some species can reach extraordinary densities and may foul industrial equipment, compete with native species, and alter natural food webs.

Species List

Anadara ovalis
Anadara transversa
Anomia simplex
Arctica islandica
Argopecten irradians
Bankia carinata
Corbicula fluminea
Corbula amurensis
Crassostrea gigas
Crassostrea sikamea
Crassostrea virginica
Gemma gemma
Geukensia demissa
Ischadium recurvum
Laternula gracilis
Lyrodus pedicellatus
Macoma petalum
Mercenaria mercenaria
Meretrix lusoria
Musculista senhousia
Mya arenaria
Mytilus galloprovincialis
Nuttallia obscurata
Ostrea angasi
Ostrea edulis
Petricolaria pholadiformis
Teredo bartschi
Teredo furcifera
Teredo navalis
Theora lubrica
Venerupis philippinarum
Cal-NEMO Database |