General Information

Event name: GB-19-002
Nature of the harmful event:
Seafood toxins
Event directly affected:
Shellfish , Humans
Toxicity detected: Yes (Approximate range: > 160 ug OA eq/kg)
Associated syndrome: DSP
Unexplained toxicity: No
Species implicated in toxin transmission (transvector):
Report the outcome of a monitoring programme: Yes (Food Standards Agency Biotoxin monitoring programme)
Event occurred before in this location: Yes
Individuals to contact: Cefas Plankton Lab

Location & Date

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Location: Latitude: , Longitude:
General location information: St Austell, South West UK
HAB Area code(s): GB-08
Additional location information: Sites were Porthallow, St, Austell Bay, Lantivet Bay
Bloom event dates (yyyy/mm/dd): Event Date:2019-05-29
Start: 2019-05-29,
Quarantine levels dates (yyyy/mm/dd): First detection: 2019-05-29, End: 2019-06-24
Additional date-related information:


Causative organism known: Yes
Causative Species/Genus: Dinophysis spp. (1600 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 499 ug/kg LC-MS
Kit used: Type of kit used:
Additional information:
Economic losses:
Management decision: Closure of shellfish harvesting areas until toxin levels were less than regulatory limits for two successive weeks.
Additional harmful effect information: Human illness was recorded after consumption of mussels from this region although not these specific sites during this time period. More details can be found at
Created at 05:14 on 8 Mar 2021
Updated at 05:15 on 8 Mar 2021