General Information

Event name: NO-17-044
Country: NORWAY
Nature of the harmful event:
High Phyto concentration , Seafood toxins
Event directly affected:
Shellfish
Toxicity detected: Yes (Approximate range: 211 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, Flųdevigen, Arendal
HAB Area code(s): NO-12
Additional location information:
Bloom event dates (yyyy/mm/dd): End: 2017-09-18
Quarantine levels dates (yyyy/mm/dd): First detection: 2017-11-06,
Additional date-related information: Closed for the season

Microalgae

Causative organism known: Yes
Causative Species/Genus: Dinophysis acuminata (2660 cells/L)
week 38
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: Whole column
Growth:
Growth Comments
Additional Environmental information:

Toxin Assay Information

Species containing the toxin Toxin type Toxin details Max. concentration Assay type
Dinophysis spp. Okadaic Acid OA eq 211 µg/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 02:03 on 6 Nov 2017
IOC/UNESCO ISSHA
IOC/UNESCO ICES PICES