General Information

Event name: GB-97-001
Nature of the harmful event:
Seafood toxins
Event directly affected:
Toxicity detected: Yes (Approximate range: 1,000 STXeq / 100 gr)
Associated syndrome: PSP
Unexplained toxicity: No
Species implicated in toxin transmission (transvector):
Report the outcome of a monitoring programme: Yes
Event occurred before in this location: No
Individuals to contact: HOWARD, Godfrey , KELLY, Marie

Location & Date

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Location: Latitude: , Longitude:
General location information: East, West coast, Orkney and Shetland Island, Scotland
HAB Area code(s): GB-17 GB-19 GB-20 GB-21 GB-22 GB-23
Additional location information:
Bloom event dates (yyyy/mm/dd): Start: 1997-05-01, End: 1997-07-23
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information:


Causative organism known: Yes
Causative Species/Genus: Alexandrium tamarense (7,000 cells/L)
Co-Ocurring Species/Genus:
Chlorophyll concentration, if known: µg/l
Additional bloom information: Clonal cultures were shown to be related to the eastern North-American clade by molecular genetic analyses but not to the non-toxic western European A. tamarense clade.
Event-related bibliography:

Environmental Conditions

Weather: Turbidity (NTU): Wind direction:
Stratified water: No Oxygen content (nL/L): Wind velocity:
Temperature (°C): Oxygen saturation %: Current Direction:
Sechhi disk (m): Salinity: Current Velocity: 0
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:

Toxin Assay Information

Species containing the toxin Toxin type Toxin details Max. concentration Assay type
Modiolus modiolus Saxitoxins STX eq 500 Bioassay-Mouse
Pecten maximus Saxitoxins STX eq 1,000 Bioassay-Mouse
Mytilus edulis Saxitoxins STX eq 395 Bioassay-Mouse
Kit used: Type of kit used:
Additional information:
Economic losses:
Management decision:
Additional harmful effect information: Up to 890 ng STXeq dm(-3) was found. Analyses of dredged mussels showed high toxin contents.
Updated at 09:17 on 9 Oct 2020