BIOTIC

BIOTIC Species Information for Cerastoderma glaucum
All Taxonomy Biology Distribution Reproduction

Researched by	Nicola White	Data supplied by	MarLIN
Refereed by	Dr Richard S.K. Barnes
Distribution and Habitat
Distribution in Britain & Ireland	Orkney, Firth of Forth, East Anglia, Deben & Orwell estuaries, south coast of England, south Wales, the west coast of Scotland, and south and west coasts of Ireland.
Global distribution	Occurs from Norway and the Baltic to the Mediterranean and Black Seas.
Biogeographic range	Not researched	Depth range	Shallow
Migratory	Non-migratory / Resident
Distribution Additional Information	The adult and juvenile populations are distributed differently. Juveniles (0.5-10 mm) attach to filamentous algae by means of byssus threads. When they reach a certain age, they migrate to the adult free-living sediment population (Labourg & Lasserre, 1980).

Substratum preferences	Coarse clean sand Fine clean sand Sandy mud Muddy sand Mud	Physiographic preferences	Estuary Isolated saline water (Lagoon)
Biological zone	Lower Eulittoral Sublittoral Fringe	Wave exposure	Sheltered Very Sheltered
Tidal stream strength/Water flow	Weak (<1 kn)	Salinity	Low (<18 psu) Variable (18-40 psu)
Habitat Preferences Additional Information
Distribution References	Labourg & Lasserre, 1980, Barnes, 1973, Boyden, 1972, Boyden & Russel, 1972, Barnes, 1980b, Barnes, 1994, Brock, 1979, Rygg, 1970, Ansell et al., 1981, Seaward, 1982, Seaward, 1990, Anonymous, 1999(s),