General Information

Event name: NO-89-001
Country: NORWAY
Nature of the harmful event:
Seafood toxins
Event directly affected:
Toxicity detected: Yes (Approximate range: 1,821 MU.)
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 extent and the duration of PSP problems may vary significantly from year to year.)
Individuals to contact: DAHL, Einar , HARBITZ, O.

Location & Date

[View larger map]
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: 1989-04-01, End: 1989-05-31
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information: April - May


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 most 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
Mussels Saxitoxins 1,821 MU Bioassay-Mouse
Kit used: Type of kit used:
Additional information: Toxins recorded above the action level according to mouse bioassay. Highest recording was 1821 MU.
Economic losses:
Management decision: Harvesting was locally banned. The public was warned against picking toxic mussels.
Additional harmful effect information:
Updated at 03:35 on 2 Dec 2019