General Information

Event name: GB-17-009
Nature of the harmful event:
Seafood toxins
Event directly affected:
Toxicity detected: Yes (Approximate range: >160 ug OA/KG)
Associated syndrome: DSP
Unexplained toxicity: No
Species implicated in toxin transmission (transvector):
Report the outcome of a monitoring programme: Yes (Foods Standards Scotland monitoring programme)
Event occurred before in this location: Yes
Individuals to contact: BRESNAN, Eileen , Davidson, Keith

Location & Date

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Location: Latitude: , Longitude:
General location information: Gon Firth, Shetland Isles
HAB Area code(s): GB-21
Additional location information: This was a discrete events at Gon Firth (Grid ref HU34986193), Gruting Voe (grid ref HU25784769) and Sandsound Voe (HU35174988)
Bloom event dates (yyyy/mm/dd): Event Date:2017-07-24
Quarantine levels dates (yyyy/mm/dd): First detection: 2017-07-24, End: 2017-09-18
Additional date-related information:


Causative organism known: Yes
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 212 ug/KG LC-MS
Kit used: Type of kit used:
Additional information:
Economic losses:
Management decision: Harvesting closures were enforced until two consecutive samples a week apart beneath the EU closure limit were received.
Additional harmful effect information: Maximum conc was from site in Gruting Voe.
Created at 04:57 on 15 Sep 2018
Updated at 05:03 on 15 Sep 2018