General Information

Event name: ES-20-005
Country: SPAIN
Nature of the harmful event:
Seafood toxins
Event directly affected:
Toxicity detected: Yes (Approximate range: 83 - 173 µg OA/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 (not in summer, but 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):
Quarantine levels dates (yyyy/mm/dd): First detection: 2020-07-13, End: 2020-08-19
Additional date-related information: This year maximum toxicity was in May


Causative organism known: No
Causative Species/Genus:
Co-Ocurring Species/Genus: Phalacroma rotundatum (Claparéde & Lachmann) Kofoid & Michener, 1911 (20 cells/L)
10-20 m
Dinophysis caudata (20 cells/L)
20 -30 m
Phalacroma sp. (60 cells/L)
Phalacroma rapa, at 10-20 m
Chlorophyll concentration, if known: Maximum 1.0 in July (at 32 m) µg/l
Additional bloom information: Very high abundance of D. acuminata and D. acuta observed in spring (see event ES-20-003). Dinophysis acuta and D. tripos were detected in August (20 cells/L) together with very low AO concentration
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 Okadaic Acid OA 173 µg OA/kg LC-MS
Kit used: No Type of kit used:
Additional information:
Economic losses:
Management decision: The bivalves production zone "Mendexa" was kept closed until September 2020
Additional harmful effect information:
Created at 11:49 on 18 Nov 2020
Updated at 10:33 on 22 Dec 2020