General Information

Event name: NO-15-011
Country: NORWAY
Nature of the harmful event:
High Phyto concentration , Seafood toxins
Event directly affected:
Toxicity detected: Yes (Approximate range: 2443-383 µg STX/kg)
Associated syndrome: PSP
Unexplained toxicity: No
Species implicated in toxin transmission (transvector): Mytilus edulis, Pecten maximus
Report the outcome of a monitoring programme: Yes (Norwegian Food Safety Autority monitoring program)
Event occurred before in this location:
Individuals to contact: Kleiven, Mona Ring

Location & Date

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Location: Latitude: , Longitude:
General location information: North sea, north, Bremanger,Skodje,Fjaler,Ųygarden
HAB Area code(s): NO-06
Additional location information: PSP detected in both Pecten maximus (551 µg STX/kg) and Mytilus edulis(927 µg STX/kg) at the location Ulvsundet, Ųygarden.
Bloom event dates (yyyy/mm/dd): Start: 2015-03-16,
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information:


Causative organism known: Yes
Causative Species/Genus: Alexandrium spp. (1200 cells/L)
Busta week 15
Co-Ocurring Species/Genus: Alexandrium tamarense (520 cells/L)
Mųrkesetsundet week 16
Chlorophyll concentration, if known: µg/l
Additional bloom information: Busta:Alexandrium week 12-16 and PSP week 16, Mųrkesetsundet PSP week 12, Alexandrium spp. week 15-17, and PSP week17, Bortheim:PSP week 15-20, Ulvsundet:PSP week 17, A.tamarense week18-20,PSP week 21-24.
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
Additional Environmental information: Sampling aprox 0-3 meters

Toxin Assay Information

Species containing the toxin Toxin type Toxin details Max. concentration Assay type
Alexandrium spp. Saxitoxins STX 2443 µg STX/kg Bioassay-Mouse
Kit used: No Type of kit used:
Additional information:
Economic losses:
Management decision:
Additional harmful effect information: Harvesting was locally banned. The public was warned against picking toxic mussels. No intoxications were reported.
Created at 08:21 on 17 Mar 2016