General Information

Event name: NO-17-036
Country: NORWAY
Nature of the harmful event:
Seafood toxins
Event directly affected:
Toxicity detected: Yes (Approximate range: DSP: 238 g/kg, PSP: 1011 g/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

Location & Date

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Location: Latitude: , Longitude:
General location information: Barents Sea, Kjempebakken, Troms
HAB Area code(s): NO-02
Additional location information:
Bloom event dates (yyyy/mm/dd): Start: 2017-07-10, End: 2017-10-09
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information:


Causative organism known: Yes
Causative Species/Genus: Dinophysis acuminata (1200 cells/L)
week 34
Co-Ocurring Species/Genus: Alexandrium tamarense (680 cells/L)
Chlorophyll concentration, if known: µg/l
Additional bloom information: A.tamarense week 28/29,D.acuminata week 34/35
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: Whole column
Growth Comments
Additional Environmental information:

Toxin Assay Information

Species containing the toxin Toxin type Toxin details Max. concentration Assay type
D. acuminata Okadaic Acid OA 238 g/kg Bioassay-Other
Alexandrium tamarense Saxitoxins STX eq 1011g STX Bioassay-Other
Kit used: Type of kit used:
Additional information: Alexandrium tamarense week28-29, PSP week 33, D.acuminata and PSP week 34, DSP and D.acuminata week 35, DSP week 37-41.
Economic losses:
Management decision: Harvesting was locally banned. The public was warned against picking toxic mussels. No intoxications were reported.
Additional harmful effect information:
Created at 03:18 on 19 Oct 2017