Paralytic Shellfish Poison in Sea Scallops (Placopecten magellanicus, Gmelin)

Bioassays for paralytic shellfish poison were carried out in sea scallops (Placopecten magellanicus, Gmelin) from the major scallop producing areas off the Canadian Atlantic coast. There was very little or no toxin in Georges Bank or southern Gulf of St. Lawrence scallops. In Bay of Fundy scallops, adductor muscles and gills were poison-free but livers and mantles remained toxic the year round. The highest score of roes in these scallops was 43 μg of toxin per 100 g of roe.