General Information

Event name: NO-03-001
Country: NORWAY
Nature of the harmful event:
Seafood toxins
Event directly affected:
Toxicity detected: Yes (Approximate range: DSP: 720-152µg/kg, PSP:2347-418µg STX/kg)
Associated syndrome: DSP , PSP
Unexplained toxicity: Yes (PSP and DSP at Borg, Hvaler week 22, and in Flųdevigen week 17)
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

Location & Date

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Location: Latitude: , Longitude:
General location information: Skagerrak,
HAB Area code(s): NO-12
Additional location information: Hvaler (W11-34), Flųdevigen, Arendal (W11-21), Dalskilen (W11-13)
Bloom event dates (yyyy/mm/dd): Start: 2003-03-10, End: 2003-08-18
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information:


Causative organism known: Yes
Causative Species/Genus: Dinophysis acuminata (200 cells/L)
Hvaler week 22
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: 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 Okadaic Acid OA 720 µg /kg Bioassay-Mouse
mytilus edulis Saxitoxins STX 2347µgSTX/ Bioassay-Mouse
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:
Created at 02:36 on 5 Mar 2015