General Information

Event name: NO-09-011
Country: NORWAY
Nature of the harmful event:
Seafood toxins
Event directly affected:
Toxicity detected: Yes (Approximate range: 3894-20g/kg)
Associated syndrome: DSP
Unexplained toxicity:
Species implicated in toxin transmission (transvector): Mytilus edulis
Report the outcome of a monitoring programme: Yes (Norwegian Food Safety Autority monitoring program)
Event occurred before in this location:
Individuals to contact: Kleiven, Mona Ring

Location & Date

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Location: Latitude: , Longitude:
General location information: north sea, north,
HAB Area code(s): NO-08
Additional location information: Gjelet(W22-42), Vemmelsvik(W28-31), Kaland(W24-50), Steiehalsen(W29-41), Smineset(W29-33), Stivika(W34-37)
Bloom event dates (yyyy/mm/dd): Start: 2009-05-11, End: 2009-11-23
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information:


Causative organism known: Yes
Causative Species/Genus: Dinophysis acuta (200 cells/L)
Steiehalsen, W34
Co-Ocurring Species/Genus: Alexandrium tamarense (200 cells/L)
Smineset, W31
Chlorophyll concentration, if known: µg/l
Additional bloom information:
Event-related bibliography:

Environmental Conditions

Weather: Turbidity (NTU): Wind direction:
Stratified water: Oxygen content (nL/L): Wind velocity:
Temperature (°C): Oxygen saturation %: Current Direction:
Sechhi disk (m): Salinity: Current Velocity:
Nutrient information:
Temperature Range During Event: Max: °C, Min: °C
Salinity Range During Event:
Bloom location in the water column:
Growth Comments Sampling aprox 0-3 meters
Additional Environmental information:

Toxin Assay Information

Species containing the toxin Toxin type Toxin details Max. concentration Assay type
Mytilus edulis Saxitoxins STX 3894g STX/kg Bioassay-Mouse
Kit used: Type of kit used:
Additional information: Gjelet, W22: Mouse bioassay. Mortality 2/3.
Economic losses:
Management decision: Harvesting was locally banned. The public was warned against picking toxic mussels.
Additional harmful effect information:
Created at 09:50 on 13 Feb 2015