General Information

Event name: ES-99-020
Country: SPAIN
Nature of the harmful event:
Seafood toxins
Event directly affected:
Toxicity detected: Yes
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 in the Galician Rías with more or less incidence depending on the year.)
Individuals to contact: MANEIRO, Juan , PAZOS, Yolanda , MOROÑO, Ángeles

Location & Date

[View larger map]
Location: Latitude: , Longitude:
General location information: Rías of Pontevedra, Muros and Ares; mouth of, Galicia, NW Spain
HAB Area code(s): ES-07 ES-08
Additional location information:
Bloom event dates (yyyy/mm/dd):
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information: From May to September with several pulses.


Causative organism known: Yes
Causative Species/Genus: Dinophysis acuminata (5,000 cells/L)
Dinophysis acuminata with a maximum cell concentration of approximately 5,000 cells per liter was detected in the middle part of the Ría de Pontevedra on May
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: 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 In any hydrological situation (soft upwelling and downwelling and relaxation of both).
Additional Environmental information:

Toxin Assay Information

Species containing the toxin Toxin type Toxin details Max. concentration Assay type
Mussel Okadaic Acid OA eq 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: Due to the persistence of the toxic cells, although in small pulses, the bans of culture and harvested areas were continuous during nearly 5 months especially in the Ría de Pontevedra.