General Information

Event name: NO-15-001
Country: NORWAY
Nature of the harmful event:
High Phyto concentration , Seafood toxins
Event directly affected:
Toxicity detected: Yes (Approximate range: 165-448 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, Mona Ring

Location & Date

[View larger map]
Location: Latitude: , Longitude:
General location information: Skagerrak, Hvaler,Fredrikstad,Tønsberg,Larvik,Arendal
HAB Area code(s): NO-11
Additional location information: Hvaler:D.acuminata(max 1840c/L)and D.norvegica(max10280c/L)week19-21.DSP week22-26. Fredrikstad:D.acuminata(max1760c/L)and D.norvegica(max4640c/L)week 20-26.Tønsberg:DSP(186)Larvik:D.acuminata(max8040c/l),D.norvegica(3600c/l)w17-24.DSP177 w25.
Bloom event dates (yyyy/mm/dd): Start: 2015-04-20, End: 2015-06-29
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information:


Causative organism known: Yes
Causative Species/Genus: Dinophysis acuminata (8040 cells/L)
Børrestadbukta week17
Dinophysis norvegica (10280 cells/L)
Utgårdskilen week 19
Co-Ocurring Species/Genus: Dinophysis acuminata (1840 cells/L)
Utgårdskilen week 19
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 Sampling 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 448 µg/kg Bioassay-Mouse
Kit used: No Type of kit used:
Additional information:
Economic losses:
Management decision: Harvesting was locally banned. The public was warned against picking toxic mussels.
Additional harmful effect information:
Created at 09:16 on 15 Mar 2016