General Information

Event name: ES-93-001
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 do Medio Mariño.)
Event occurred before in this location: Yes (It has been very frequently recorded since the phytoplankton monitoring programme started.)
Individuals to contact: MANEIRO, Juan , MARIÑO, Joaquin , PAZOS, Yolanda

Location & Date

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Location: Latitude: , Longitude:
General location information: Rías of Vigo, Pontevedra, Arousa and Muros., 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: 1993. All the year.


Causative organism known: Yes
Causative Species/Genus: Dinophysis acuminata (3,920 cells/L)
in the mouth of Arosa in mid-May.
Dinophysis acuminata (>2,000 cells/L)
in Pontevedra, Arousa and Muros in mid-May.
Dinophysis acuminata (5,120 cells/L)
in the mouth of Vigo in mid-August.
Dinophysis acuminata (10,640 cells/L)
in the inner part of Pontevedra.
Dinophysis acuminata (>2,000 cells/L)
Vigo and mouths of Arosa and Muros mid-Sep.
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:
In situ
Growth Comments The increases of D. acuminata populations in the Rías were not associated with shelf waters. Probably they represent in situ growth.
Additional Environmental information: D. acuminata did not show any salinity or temperature preferences while occuring within the whole range of salinity and temperature values for the region.

Toxin Assay Information

Species containing the toxin Toxin type Toxin details Max. concentration Assay type
Kit used: No Type of kit used:
Additional information: DSP bivalve toxicity
Economic losses:
Management decision: Harvesting was closed when DSP toxin was detected.
Additional harmful effect information: