General Information

Event name: ES-22-002
Country: SPAIN
Nature of the harmful event:
Seafood toxins
Event directly affected:
Toxicity detected: Yes (Approximate range: 161 - 963 g OA eq./kg)
Associated syndrome: DSP
Unexplained toxicity: No
Species implicated in toxin transmission (transvector):
Report the outcome of a monitoring programme: Yes
Event occurred before in this location: Yes (annually in spring)
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): Event Date:2022-04-26
Quarantine levels dates (yyyy/mm/dd): First detection: 2022-04-26, End: 2022-05-23
Additional date-related information: Suspicion: one bloom in April, another in May


Causative organism known: Yes
Causative Species/Genus: Dinophysis acuminata (480 cells/L)
Max. 2022-05-03, at 0-10 m (hose).
Co-Ocurring Species/Genus: Dinophysis sacculus (80 cells/L)
2023-05-03, 0-10 m (hose)
Dinophysis caudata (20 cells/L)
2023-05-03, 0-10 m (hose)
Dinophysis tripos ( cells/L)
net (0-45 m)
Dinophysis acuta (80 cells/L)
2023-05-03, 20-30 m (hose)
Chlorophyll concentration, if known: 0.3 (maximum, at 30 m) µg/l
Additional bloom information:
Event-related bibliography:

Environmental Conditions

Weather: April ended with warm and sunny conditions, after some days of heavy rain. Turbidity (NTU): Wind direction:
Stratified water: Oxygen content (nL/L): Wind velocity:
Temperature (°C): 13.3-15.1 Oxygen saturation %: Current Direction:
Sechhi disk (m): 14 Salinity: 34.7-35.1 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: Chl-a and hydrographic data refer to the water column (0-30 m), on 2022-05-03.

Toxin Assay Information

Species containing the toxin Toxin type Toxin details Max. concentration Assay type
Mytilus galloprovincialis Okadaic Acid OA 911 ug OA eq./kg LC-MS
Mytilus galloprovincialis Okadaic Acid DTX2 52 ug OA e LC-MS
Kit used: No Type of kit used:
Additional information:
Economic losses:
Management decision: Temporary closure of the bivalves production zone
Additional harmful effect information:
Created at 01:07 on 16 Mar 2023
Updated at 02:28 on 27 Mar 2023