General Information

Event name: FR-91-013
Country: FRANCE
Nature of the harmful event:
Seafood toxins
Event directly affected:
Toxicity detected: Yes
Associated syndrome: DSP
Unexplained toxicity: No
Species implicated in toxin transmission (transvector):
Report the outcome of a monitoring programme: Yes
Event occurred before in this location: Yes (1983; 1984 (1,000 cells/L); 1986 (Vilaine: 2,400, Croisic: 1,300); 1987 (Vilaine: 10,700); 1988 (Vilaine: 20,400); 1990 (Vilaine: 24,400, Croisic: 2,100).)
Individuals to contact: SCHWEIBOLD Laura

Location & Date

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Location: Latitude: , Longitude:
General location information: Vilaine Bay, Croisic roads., SOUTHERN BRITTANY.
HAB Area code(s): FR-08
Additional location information: Area 4.
Bloom event dates (yyyy/mm/dd):
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information: June to late July.


Causative organism known: Yes
Causative Species/Genus: Dinophysis spp. (6,200 cells/L)
Croisic roads.
Dinophysis spp. (2,500 cells/L)
Vilaine Bay.
Co-Ocurring Species/Genus:
Chlorophyll concentration, if known: µg/l
Additional bloom information:
Event-related bibliography:

Environmental Conditions

Weather: Turbidity (NTU): Wind direction:
Stratified water: No Oxygen content (nL/L): Wind velocity:
Temperature (°C): Oxygen saturation %: Current Direction:
Sechhi disk (m): Salinity: Current Velocity: 0
Nutrient information:
Temperature Range During Event: Max: °C, Min: °C
Salinity Range During Event:
Bloom location in the water column:
Growth: Advected
In situ
Growth Comments Probably both.
Additional Environmental information:

Toxin Assay Information

Species containing the toxin Toxin type Toxin details Max. concentration Assay type
Kit used: Type of kit used:
Additional information:
Economic losses:
Management decision: Ban of shellfish marketing, from June 20 to July 26 (Vilaine bay), form June 14 to July 12 (Croisic roads).
Additional harmful effect information: DSP toxicity above safety level (maximum recorded: high toxicity in Vilaine bay and Croisic roads).
Updated at 12:26 on 2 Dec 2019