General Information

Event name: NO-15-003
Country: NORWAY
Nature of the harmful event:
Seafood toxins
Event directly affected:
Toxicity detected: Yes (Approximate range: 176-438 µg/kg)
Associated syndrome: DSP
Unexplained toxicity: No
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: Yes
Individuals to contact: Kleiven

Location & Date

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Location: Latitude: , Longitude:
General location information: Skagerrak, Hvaler,Fredrikstad,Larvik,Kragerų,Arendal
HAB Area code(s): NO-11
Additional location information: Hvaler week 32-33, fredrikstad w 31-33, Larvik w 29-41 and Kragerų w 27-30,Arendal w31.
Bloom event dates (yyyy/mm/dd): Start: 2015-06-29, End: 2015-10-05
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information:


Causative organism known: Yes
Causative Species/Genus: Dinophysis acuta (250 cells/L)
Hvaler w 32
Co-Ocurring Species/Genus: Dinophysis norvegica (15440 cells/L)
Arendal w 31
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: Sampling aprox 0-3 meters

Toxin Assay Information

Species containing the toxin Toxin type Toxin details Max. concentration Assay type
Dinophysis Okadaic Acid OA 438 µg/kg Bioassay-Mouse
Kit used: No 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 09:35 on 15 Mar 2016
Updated at 09:42 on 15 Mar 2016