General Information

Event name: ES-23-001
Country: SPAIN
Nature of the harmful event:
Seafood toxins
Event directly affected:
Toxicity detected: Yes (Approximate range: 55 mg DA/kg)
Associated syndrome: ASP
Unexplained toxicity: No
Species implicated in toxin transmission (transvector):
Report the outcome of a monitoring programme: Yes
Event occurred before in this location: Yes (ES-19-002)
Individuals to contact: REVIILLA, Marta , SOLAUN, Oihana

Location & Date

[View larger map]
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): Event Date:2023-03-13
Quarantine levels dates (yyyy/mm/dd): First detection: 2023-03-13,
Additional date-related information: Toxicity decreased quickly


Causative organism known: Yes
Causative Species/Genus: Pseudo-nitzschia spp. (65704 cells/L)
Max. at 20-30 m (hose)
Co-Ocurring Species/Genus:
Chlorophyll concentration, if known: 2.6 (maximum, at 8 m) µg/l
Additional bloom information:
Event-related bibliography:

Environmental Conditions

Weather: Sunny; rough sea Turbidity (NTU): Wind direction:
Stratified water: No Oxygen content (nL/L): Wind velocity:
Temperature (°C): Oxygen saturation %: Current Direction:
Sechhi disk (m): 7 Salinity: Current Velocity:
Nutrient information:
Temperature Range During Event: Max: 12.6 °C, Min: 12.8 °C
Salinity Range During Event: Max: 35.3, Min: 35.3
Bloom location in the water column:
Growth Comments
Additional Environmental information: Chl-a and hydrographic data refer to the water column (0-30 m), on 2023-03-13.

Toxin Assay Information

Species containing the toxin Toxin type Toxin details Max. concentration Assay type
Mytilus galloprovincialis Domoic Acid DA 55 mg DA/kg LC-UV
Kit used: No Type of kit used:
Additional information:
Economic losses:
Management decision:
Additional harmful effect information: Temporary closure of the bivalves production zone
Created at 02:26 on 27 Mar 2023