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Bivalve molluscs accumulate toxins of the okadaic acid (OA) and pectenotoxin (PTX) groups, which are frequently found in Dinophysis spp. Transformation of the OA-group toxins into fatty acid ester derivatives (often designated “DTX3”) is common in many bivalve species but the degree to which these toxins are transformed vary between species, and is also depending on the parent toxin involved. In this...
In 2002, two outbreaks of diarrhetic shellfish poisoning (DSP) occurred in Norway, which was later confirmed to be caused by the consumption of brown crab (Cancer pagurus) contaminated predominantly by esters of okadaic acid (OA) after feeding on toxic blue mussels (Mytilus edulis). In addition to OA-group toxins, pectenotoxins (PTXs) are commonly detected in the toxin-producing algae (i.e. Dinophysis)...
In 2005 and 2006, azaspiracids were for the first time detected in brown crabs (Cancer pagurus) from the west coast of Sweden and the north and north-west coast of Norway. Azaspiracids are marine toxins that have been detected in blue mussels in Europe in recent years. On some occasions, they have been responsible for human intoxications with symptoms similar to those occurring by consumption of shellfish...
In 2002 several hundred people were taken ill after eating self-harvested brown crabs (Cancer pagurus) in the southern part of Norway. The symptoms were similar to diarrhetic shellfish poisoning (DSP) although with a somewhat delayed onset. This happened at the same time as an unusual early bloom of Dinophysis acuta had lead to high amounts of DSP toxins in blue mussels (Mytilus edulis) in the same...
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