General Information

Event name: NO-13-001
Country: NORWAY
Nature of the harmful event:
Seafood toxins
Event directly affected:
Toxicity detected: Yes (Approximate range: 182-1997 g/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:
Individuals to contact: Kleiven , Gustad|

Location & Date

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Location: Latitude: , Longitude:
General location information: Skagerak,
HAB Area code(s): NO-11
Additional location information: Fredrikstad(379 g/kg / 1011 g/kg)week 26/28 and D. acuminata (400 cells/L), D. norvegica (5600Cells/L)week 28, Tnsberg (1997 g/kg) and Larvik (182 g/kg)week 27, Kristiansand (217 g/kg) week 31, and Hvaler (D. acuminata 1600 cells/L) week 32
Bloom event dates (yyyy/mm/dd): Event Date:2013-06-24
Start: 2013-06-24, End: 2013-09-02
Quarantine levels dates (yyyy/mm/dd): First detection: 2013-06-24, End: 2013-09-02
Additional date-related information:


Causative organism known: Yes
Causative Species/Genus: Dinophysis acuminata (4000 cells/L)
Fredrikstad week 28
Dinophysis norvegica (5600 cells/L)
Fredrikstad week 28
Dinophysis acuminata (1600 cells/L)
Hvaler week 32
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
Additional Environmental information:

Toxin Assay Information

Species containing the toxin Toxin type Toxin details Max. concentration Assay type
Mytilus edulis Okadaic Acid 1997 g/kg Bioassay-Other
Kit used: Type of kit used:
Additional information:
Economic losses: Mussel plants were banned from harvesting.
Management decision: Harvesting was stopped and the public was warned
Additional harmful effect information:
Created at 11:04 on 27 Aug 2014
Updated at 09:58 on 13 Jan 2015