General Information

Event name: NO-02-012
Country: NORWAY
Nature of the harmful event:
High Phyto concentration , Seafood toxins
Event directly affected:
Shellfish
Toxicity detected: Yes (Approximate range: 687-368 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:
Individuals to contact: Kleiven

Location & Date

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Location: Latitude: , Longitude:
General location information: Skagerrak, Tønsberg and Kragerø
HAB Area code(s): NO-13
Additional location information: Tønsberg(Vallø) and Kragerø (saltneven)
Bloom event dates (yyyy/mm/dd): Start: 2002-09-16, End: 2002-12-02
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information:

Microalgae

Causative organism known: Yes
Causative Species/Genus: Dinophysis acuta (520 cells/L)
Vallø week 44
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: Sampling aprox 0-3 meters

Toxin Assay Information

Species containing the toxin Toxin type Toxin details Max. concentration Assay type
D.acuta Okadaic Acid OA 398 µg/kg Bioassay-Mouse
Kit used: No 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: No intoxications wer reported, the public was warned.
Created at 01:12 on 12 Apr 2016
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