Harmful Algal Information System: Event NO-17-029

General Information

Event name:	NO-17-029
Country:	NORWAY
Nature of the harmful event:	Seafood toxins
Event directly affected:	Shellfish
Toxicity detected:	Yes (Approximate range: PSP:21500-1075 µg STX/kg, ASP:21479µg/kg)
Associated syndrome:	ASP , PSP
Unexplained toxicity:	Yes
Species implicated in toxin transmission (transvector):	Pecten maximus
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, Frøya and Hitra HAB Area code(s): NO-06
Additional location information:
Bloom event dates (yyyy/mm/dd):	Start: 2017-05-22, End: 2017-08-28
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information:	ASP: week 30 only.

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
Pseudo-nitzschia spp.	Domoic Acid	DA	2145 µg/kg	Bioassay-Other

Kit used:

Type of kit used:

Additional information:

Economic losses:

Management decision:

Harvesting was locally banned. The public was warned against picking toxic mussels. No intoxications were reported. However, intoxications from DSP was reported during the summer (july) at several restaurants in the Oslo-region.

Additional harmful effect information:

Created at 11:05 on 8 Sep 2017