Argopecten irradians (Lamarck, 1819)
Atlantic Bay scallop
Argopecten irradians
photo by Coltro, Marcus

Family:  Pectinidae (scallops)
Max. size:  7.5 cm SHL (male/unsexed); max. reported age: 3 years
Environment:  benthic; marine; depth range 0 - 20 m
Distribution:  Western Atlantic: Argopecten irradians irradians, Argopecten irradians concentricus, Argopecten irradians amplicostatus. Introduced in Canada and China.
Diagnosis:  Shell valves convex, upper valve less convex than more inflated lower valve. Surface sculpture of 19 to 21 strong, squarish ribs. Hinge with wing-like projections of about same size. Colour: lower valve light, usually whitish, upper valve dark brown to dark grey with darker markings.
Biology:  Average life span of 20 to 26 months.
IUCN Red List Status: Not Evaluated (N.E.) Ref. 123251)
Threat to humans: 
Country info:   
 

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