Phytoplancton des zones myticoles de la baie de Vilaine et intoxication par les coquillages.

Following 1978 and 1981 human poisoning by mussels in Vilaine Bay (France) a survey of potentially toxic dinoflagellates was conducted in that area in 1982. At the same time paralytic shellfish poison (PSP) analyses were made, the authors studied the dinoflagellates encountered in the intestinal guts of mussels from January to August 1982. Results failed to demonstrate an occurrence of PSP producing species, either by toxicological analysis or dinoflagellate persistency in the mussel guts.