Pseudamussium septemradiatum

Researched By	Morvan Barnes	Data Supplied By	MarLIN
Refereed by	This information is not refereed
Taxonomy
Scientific name	Pseudamussium septemradiatum	Common name	Seven rayed scallop
MCS Code	W1791	Recent Synonyms
Phylum	Mollusca	Subphylum
Superclass		Class	Pelecypoda
Subclass		Order	Ostreoida
Suborder	Pectinina	Family	Pectinidae
Genus	Pseudamussium	Species	septemradiatum
Subspecies
Additional Information
Taxonomy References	Matsumoto & Hayami, 2000, North, 1951, Howson & Picton, 1997, Hayward & Ryland, 1995b
General Biology
Growth form	Bivalved	Feeding method	Active suspension feeder, Surface deposit feeder
Mobility/Movement	Swimmer, Temporary attachment	Environmental position	Epifaunal, Epibenthic
Typical food types	Suspended organic particles and phytoplankton	Habit	Free living
Bioturbator	Not relevant	Flexibility	None (< 10 degrees)
Fragility	Intermediate	Size	Small-medium(3-10cm)
Height	Not researched	Growth Rate	Not Researched
Adult dispersal potential	Not researched	Dependency	Independent
Sociability	Solitary
Toxic/Poisonous?	No
Additional Information
Biology References	North, 1951, Mohlenberg & Riisgard, 1978, Hayward & Ryland, 1995b, Tebble, 1966, Christensen, 1980
Distribution and Habitat
Distribution in Britain & Ireland	Found off the west coasts of Scotland and the coasts of Northumberland and Durham.
Global distribution	Found in north-west Europe from Norway to the Shetlands and south to Spain and the Canary Isles and in the Meditteranean.
Biogeographic range	Temperate to warm temperate.	Depth range	From 15 m to 300 m depth.
Migratory	Non-migratory / Resident
Distribution Additional Information
Substratum preferences	Gravel / shingle, Coarse clean sand, Fine clean sand, Muddy sand, Gravelley sand	Physiographic preferences	Open coast, Offshore seabed
Biological zone	Upper Circalittoral, Lower Circalittoral, Circalittoral Offshore, Bathybenthic (Bathyal)	Wave exposure	Field unresearched
Tidal stream strength/Water flow	Field unresearched	Salinity	Full (30-40 psu)
Habitat Additional Information
AMBI Group (Borja et al., 2000)	II
Distribution References	Hayward & Ryland, 1995b, Tebble, 1966, Seaward, 1982, Christensen, 1980
Reproduction/Life History
Reproductive type	Gonochoristic	Developmental mechanism	Not researched
Reproductive Season	Not researched	Reproductive Location	Water column
Reproductive frequency	Annual protracted	Regeneration potential	No
Life span	6-10 years	Age at reproductive maturity	1 year
Generation time	Not researched	Fecundity	Insufficient information
Egg/propagule size	Insufficient information	Fertilization type	External
Larvae/Juveniles Larval/Juvenile dispersal potential Not researched Larval settlement period Not researched Duration of larval stage Not researched
Additional Information
Reproduction References	Hayward & Ryland, 1995b, Tebble, 1966, Christensen, 1980