General Information

Event name: NO-07-012
Country: NORWAY
Nature of the harmful event:
Event directly affected:
Toxicity detected: Yes (Approximate range: DSP: 459-193g/kg,PSP:1026-451g STX/kg)
Associated syndrome: DSP , PSP
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: ,
HAB Area code(s): NO-01
Additional location information: Alta, Kirby
Bloom event dates (yyyy/mm/dd): Start: 2007-03-19, End: 2007-11-26
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information:


Causative organism known: Yes
Causative Species/Genus: Alexandrium spp. (700 cells/L)
alta, w31
Co-Ocurring Species/Genus: Dinophysis acuta (760 cells/L)
alta, w 37
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
Additional Environmental information:

Toxin Assay Information

Species containing the toxin Toxin type Toxin details Max. concentration Assay type
Mytilus edulis Saxitoxins STX 1026g STX/kg Bioassay-Mouse
mytilus edulis Okadaic Acid OA 549g/kg Bioassay-Mouse
Kit used: Type of kit used:
Additional information: Kirby, DSP: W17:Mouse bioassay. Mortality 2/2, W19: 3/3.
Economic losses:
Management decision: Harvesting was locally banned. The public was warned against picking toxic mussels.
Additional harmful effect information:
Created at 11:09 on 22 Jan 2015