General Information

Event name: ES-19-007
Country: SPAIN
Nature of the harmful event:
Seafood toxins
Event directly affected:
Toxicity detected: Yes (Approximate range: 430 - 1200 g STX eq./kg)
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: Yes (but, without a management action (it was an experimental farm at that time))
Individuals to contact: REVIILLA, Marta , SOLAUN, Oihana

Location & Date

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Location: Latitude: 43.356667, Longitude: -2.448056
General location information: Longline Mendexa, Basque Country
HAB Area code(s): ES-01
Additional location information: Open marine waters
Bloom event dates (yyyy/mm/dd):
Quarantine levels dates (yyyy/mm/dd): First detection: 2019-10-28, End: 2019-12-03
Additional date-related information: Maximum toxicity 2019-10-28


Causative organism known: No
Causative Species/Genus:
Co-Ocurring Species/Genus:
Chlorophyll concentration, if known: Maximum=0.5 ug/L in October (at 5 m) µg/l
Additional bloom information: Presence of Alexandrium cf. ostenfeldii and Centrodinium pavillardii/punctatum in surface waters along the Basque coast.
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 galloprovincialis Saxitoxins STX eq 1200 g STX eq./kg Bioassay-Mouse
Kit used: No Type of kit used:
Additional information:
Economic losses:
Management decision: The bivalves production zone "Mendexa" was closed
Additional harmful effect information:
Created at 05:06 on 16 Nov 2020
Updated at 09:32 on 22 Dec 2020