Harmful Algal Information System: Event NO-07-011

General Information

Event name:	NO-07-011
Country:	NORWAY
Nature of the harmful event:	Seafood toxins
Event directly affected:	Shellfish
Toxicity detected:	No
Associated syndrome:	DSP , PSP
Unexplained toxicity:
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, Mona Ring

Location & Date

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Location:	Latitude: , Longitude:
General location information:	Norwegian Sea, North, HAB Area code(s): NO-03
Additional location information:	Selvågen, Bodø, Vesterålen, Kvæfjord, Kjempebakken
Bloom event dates (yyyy/mm/dd):	Start: 2007-07-30, End: 2007-12-31
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information:

Microalgae

Causative organism known:	Yes
Causative Species/Genus:	Alexandrium spp. (200 cells/L) selvågen, week 31 Dinophysis acuta (680 cells/L) kvæfjord, week 38
Co-Ocurring Species/Genus:	Dinophysis acuminata (3120 cells/L) selvågen, week 35
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:

Growth Comments

Additional Environmental information:

Toxin Assay Information

Species containing the toxin	Toxin type	Toxin details	Max. concentration	Assay type
Mytilus edulis	Saxitoxins	STX	275µg STX/kg	Bioassay-Mouse
mytilus edulis	Okadaic Acid	OA	891µg/kg	Bioassay-Mouse

Kit used:

Type of kit used:

Additional information:

Vesterålen,DSP W37:Mouse bioassay. Mortality 1/3. W39: Mouse bioassay. Mortality 2/3. W41: Mouse bioassay. Mortality 3/3. W43: Mouse bioassay. Mortality 3/3. W47: Mouse bioassay. Mortality 2/3. W49: Mouse bioassay. Mortality 2/3. Kjempebakken, DSP: W 38: Mouse bioassay. Mortality 3/3.

Economic losses:

Management decision:

Harvesting was locally banned. The public was warned against picking toxic mussels.

Additional harmful effect information:

Created at 10:55 on 22 Jan 2015