General Information

Event name: NO-09-019
Country: NORWAY
Nature of the harmful event:
Seafood toxins
Event directly affected:
Toxicity detected: Yes (Approximate range: PSP:22461-406µg/kg, YTX:1243µg/kg)
Associated syndrome: OTHER , PSP
Unexplained toxicity: Yes (PSP and YTX at Valvåg, week 34)
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: Norwegian Sea, North,
HAB Area code(s): NO-06
Additional location information: Mørkvedbukta(W18-26), Valbergene(W19-27), Vikelandsbukta(W20-32), Valvåg (W18-38), Tangstad(W20-23)
Bloom event dates (yyyy/mm/dd): Start: 2009-04-27, End: 2009-09-14
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information:


Causative organism known: Yes
Causative Species/Genus: Alexandrium spp. (4000 cells/L)
Valvåg, W23
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:
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
Mytilus edulis Saxitoxins STX 22461µg STX/kg Bioassay-Mouse
mytilus edulis Yessotoxins YTX 1243µg/kg Bioassay-Mouse
Kit used: 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 10:51 on 13 Feb 2015
Updated at 10:54 on 13 Feb 2015