General Information

Event name: ES-97-001
Country: SPAIN
Nature of the harmful event:
Seafood toxins
Event directly affected:
Toxicity detected: Yes (Approximate range: DSP positive.)
Associated syndrome: DSP
Unexplained toxicity: No
Species implicated in toxin transmission (transvector):
Report the outcome of a monitoring programme: Yes (Monitoring programme of the Centro de Control da Calidade do Medio Mariño.)
Event occurred before in this location: Yes (The DSP episodes caused by D. acuminata are a recurrent phenomenon with more or less incidence depending on the year.)
Individuals to contact: MANEIRO, Juan , PAZOS, Yolanda , MOROÑO, Ángeles

Location & Date

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Location: Latitude: , Longitude:
General location information: Rias of Vigo, Arousa, Pontevedra and Ares., Galicia, NW Spain.
HAB Area code(s): ES-05 ES-07 ES-08
Additional location information:
Bloom event dates (yyyy/mm/dd):
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information: On May in Ría of Ares, on October in Rías of Vigo, Pontevedra and Arousa.


Causative organism known: Yes
Causative Species/Genus: Dinophysis acuminata (1,280 cells/L)
May, Ria de Ares
Dinophysis acuminata (1,300 cells/L)
October, Ría de Vigo, Pontevedra and Arousa
Dinophysis acuta (880 cells/L)
October, Ría de Vigo, Pontevedra and Arousa
Dinophysis caudata (560 cells/L)
October, Ría de Vigo, Pontevedra and Arousa
Co-Ocurring Species/Genus:
Chlorophyll concentration, if known: µg/l
Additional bloom information:
Event-related bibliography:

Environmental Conditions

Weather: Turbidity (NTU): Wind direction:
Stratified water: No Oxygen content (nL/L): Wind velocity:
Temperature (°C): Oxygen saturation %: Current Direction:
Sechhi disk (m): Salinity: Current Velocity: 0
Nutrient information:
Temperature Range During Event: Max: °C, Min: °C
Salinity Range During Event:
Bloom location in the water column:
Growth: Advected
In situ
Growth Comments The Ría of Ares population was in situ growth while the Ría of Vigo, Pontevedra and Arousa populations were probably advected.
Additional Environmental information: Variable conditions.

Toxin Assay Information

Species containing the toxin Toxin type Toxin details Max. concentration Assay type
Mussels Okadaic Acid Positive Bioassay-Mouse
Kit used: No Type of kit used:
Additional information:
Economic losses:
Management decision: Harvesting was closed in the culture areas affected.
Additional harmful effect information: DSP mussel toxicity