General Information

Event name: NO-17-023
Country: NORWAY
Nature of the harmful event:
High Phyto concentration , Seafood toxins
Event directly affected:
Shellfish
Toxicity detected: Yes (Approximate range: 212-181 g/kg)
Associated syndrome: DSP
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: Skagerrak, Engelsviken, Fredrikstad
HAB Area code(s): NO-12
Additional location information:
Bloom event dates (yyyy/mm/dd): Start: 2017-06-06, End: 2017-08-21
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information:

Microalgae

Causative organism known: Yes
Causative Species/Genus: Dinophysis acuminata (1080 cells/L)
week 24
Co-Ocurring Species/Genus: Pseudo-nitzschia spp. (1010000 cells/L)
week 23
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: Whole column
Growth:
Growth Comments Aprox 0-3 meters
Additional Environmental information:

Toxin Assay Information

Species containing the toxin Toxin type Toxin details Max. concentration Assay type
Dinophysis Okadaic Acid OA 212 g/kg Bioassay-Other
Kit used: Type of kit used:
Additional information:
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 01:29 on 23 Aug 2017
IOC/UNESCO ISSHA
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