General Information

Event name: NO-90-005
Country: NORWAY
Nature of the harmful event:
Seafood toxins
Event directly affected:
Toxicity detected: Yes
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 (A few historical records and more or less regular occurrences the recent years, however, the spatial and temporal extent may vary significantly from one year to another.)
Individuals to contact: DAHL, Einar , HARBITZ, O.

Location & Date

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Location: Latitude: , Longitude:
General location information: , NORTHWEST COAST
HAB Area code(s): NO-03 NO-04 NO-05
Additional location information:
Bloom event dates (yyyy/mm/dd): Start: 1990-04-01, End: 1990-06-30
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information: April-June


Causative organism known: No
Causative Species/Genus:
Co-Ocurring Species/Genus:
Chlorophyll concentration, if known: µg/l
Additional bloom information: Water samples were not collected, but mos probably members of the genus Alexandrium/ Protogonyaulax.
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:
In situ
Growth Comments Mainly due to in situ growth.
Additional Environmental information: No records.

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: Harvesting was locally banned. The public was warned against picking toxic mussels.
Additional harmful effect information: Toxins recorded above the action level according to mouse bioassay. Highest recording was 1616 ME.
Updated at 04:01 on 2 Dec 2019