General Information

Event name: FR-93-006
Country: FRANCE
Nature of the harmful event:
Water Discoloration , Seafood toxins
Event directly affected:
Toxicity detected: Yes (Approximate range: 474 µg STXeq / 100 g)
Associated syndrome: PSP
Unexplained toxicity: No
Species implicated in toxin transmission (transvector):
Report the outcome of a monitoring programme: Yes
Event occurred before in this location: Yes (1989, 1990, 1992 in Morlaix Bay.)
Individuals to contact:

Location & Date

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Location: Latitude: , Longitude:
General location information: Penzé River (site 033)., Northern Brittany.
HAB Area code(s): FR-05
Additional location information: Area 3.
Bloom event dates (yyyy/mm/dd): Start: 1993-06-21, End: 1993-07-12
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information:

Microalgae

Causative organism known: Yes
Causative Species/Genus: Alexandrium minutum (5,012,000 cells/L)
Co-Ocurring Species/Genus:
Chlorophyll concentration, if known: µg/l
Additional bloom information: Presence of cysts in the sediment.
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): 1.25 - 60 Salinity: Current Velocity: 0
Nutrient information:
Temperature Range During Event: Max: 20 °C, Min: 16 °C
Salinity Range During Event: Max: 35, Min: 23
Bloom location in the water column:
Growth:
In situ
Growth Comments In situ growth (presence of cysts in the sediment).
Additional Environmental information:

Toxin Assay Information

Species containing the toxin Toxin type Toxin details Max. concentration Assay type
Oysters flesh Saxitoxins STX eq up to 474 Bioassay-Mouse
Mussels flesh Saxitoxins STX eq up to 112 Bioassay-Mouse
Kit used: No Type of kit used:
Additional information: PSP toxicity level above safety level.
Economic losses:
Management decision: Ban of shellfish marketing from June 24 to July 28
Additional harmful effect information: Pink to reddish colored water. PSP toxicity level above safety level.
IOC/UNESCO ISSHA
IOC/UNESCO ICES PICES