General Information

Event name: GB-20-009
Nature of the harmful event:
Seafood toxins
Event directly affected:
Toxicity detected: No
Associated syndrome: DSP
Unexplained toxicity: No
Species implicated in toxin transmission (transvector):
Report the outcome of a monitoring programme: Yes (Food Standards Scotland Biotoxin monitoring programme)
Event occurred before in this location:
Individuals to contact: BRESNAN, Eileen , Davidson, Keith

Location & Date

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Location: Latitude: , Longitude:
General location information: Shetland Islands, Scotland
HAB Area code(s): GB-21
Additional location information: Multiple sites around the Shetland Islands impacted
Bloom event dates (yyyy/mm/dd): Event Date:2020-07-14
Quarantine levels dates (yyyy/mm/dd): First detection: 2020-07-14, End: 2020-09-14
Additional date-related information:


Causative organism known: No
Causative Species/Genus: Dinophysis spp. ( cells/L)
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:
Growth Comments
Additional Environmental information:

Toxin Assay Information

Species containing the toxin Toxin type Toxin details Max. concentration Assay type
Mytilus edulis Okadaic Acid OA eq 1083 ug/KG LC-MS
Kit used: Type of kit used:
Additional information:
Economic losses:
Management decision: Multiple closures around the Shetland Islands due to OA levels exceeding regulatory limits.
Additional harmful effect information: Maximum level detected in Gruting Voe on 3rd Aug 2020.
Created at 04:43 on 16 Apr 2021
Updated at 12:05 on 19 Apr 2021