Harmful Algal Information System: Event NO-17-022

General Information

Event name:	NO-17-022
Country:	NORWAY
Nature of the harmful event:	Seafood toxins
Event directly affected:	Shellfish
Toxicity detected:	Yes (Approximate range: 21500-1075 µg STX/kg)
Associated syndrome:	PSP
Unexplained toxicity:
Species implicated in toxin transmission (transvector):	cancer pagurus
Report the outcome of a monitoring programme:	Yes (Norwegian Food Safety Autority monitoring program)
Event occurred before in this location:	No
Individuals to contact:	Kleiven, Mona Ring

Location & Date

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Location:	Latitude: , Longitude:
General location information:	Norwegian Sea, Trøndelag HAB Area code(s): NO-06
Additional location information:	High PSP concentrations for several weeks (w21-33) in the whole area.
Bloom event dates (yyyy/mm/dd):	End: 2017-05-22
Quarantine levels dates (yyyy/mm/dd):	First detection: 2017-08-23,
Additional date-related information:

Microalgae

Causative organism known:	No
Causative Species/Genus:
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

Aprox 0-3 meters

Additional Environmental information:

Toxin Assay Information

Species containing the toxin	Toxin type	Toxin details	Max. concentration	Assay type
Alexandrium spp.	Saxitoxins	STX eq	21500 µg STX/kg	Bioassay-Other

Kit used:

Type of kit used:

Additional information:

Economic losses:

Management decision:

Harvesting was locally banned, both for blue mussels and crabs. The public was warned against picking toxic mussels. No intoxications were reported. Several news paper warnings.

Additional harmful effect information:

Created at 01:22 on 23 Aug 2017