General Information

Event name: GB-17-012
Nature of the harmful event:
Seafood toxins , Mass mortalities
Event directly affected:
Other Terrestrial
Toxicity detected: Yes
Associated syndrome: PSP
Unexplained toxicity:
Species implicated in toxin transmission (transvector): Starfish and Dab
Report the outcome of a monitoring programme: No
Event occurred before in this location: No
Individuals to contact: BRESNAN, Eileen , Cefas Plankton Lab

Location & Date

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Location: Latitude: , Longitude:
General location information: Norfolk, East England
HAB Area code(s): GB-03 GB-04
Additional location information: Starfish, crabs and fish were washed ashore during storms in dec 17/Jan 2018. These were eaten by a number of dogs (nine) ill and two died of PSP intoxication. See reference in bibliography for details.
Bloom event dates (yyyy/mm/dd): Event Date:2017-12-31
Quarantine levels dates (yyyy/mm/dd): First detection: 2017-12-31, End: 2018-01-30
Additional date-related information: See reference in Bibliography


Causative organism known: No
Causative Species/Genus:
Co-Ocurring Species/Genus:
Chlorophyll concentration, if known: µg/l
Additional bloom information: This is not an area where Alexandrium is usually recorded.
Event-related bibliography: See Turner et al 2018 ( for full event info.

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
Limanda limanda Saxitoxins dcSTX 506 ug/KG LC
Asterias rubens Saxitoxins dcSTX 13730 ug/KG LC
Kit used: Type of kit used:
Additional information:
Economic losses:
Management decision:
Additional harmful effect information: Detail of event in open access reference Turner et al 2018
Created at 05:40 on 15 Sep 2018
Updated at 01:01 on 30 Aug 2019