General Information

Event name: ES-92-002
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 (Very frequently recorded since the phytoplankton monitoring programme started 1977.)
Individuals to contact: MANEIRO, Juan , MARIÑO, Joaquin , PAZOS, Yolanda

Location & Date

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Location: Latitude: , Longitude:
General location information: Rías of Pontevedra, Arousa, Muros and Ares-Be, 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: 1992. All the year.


Causative organism known: Yes
Causative Species/Genus: Dinophysis acuminata (2,320 cells/L)
mid-March in Pontevedra.
Dinophysis acuminata (16,240 cells/L)
in Muros end of May to the beginning of June.
Dinophysis acuminata (>2,000 cells/L)
in Arosa, Muros, Pontevedra, from May to June.
Dinophysis acuminata (3,900 cells/L)
in the mouth of Ares-Betanzos in mid-July.
Dinophysis acuminata (high value cells/L)
in the mouth of Pontevedra and Muros in mid-July.
Dinophysis acuminata (3,720 cells/L)
in Muros in the middle of August.
Dinophysis acuminata (3,280 cells/L)
in Ares-Betanzos in mid-September.
Dinophysis acuminata (6,120 cells/L)
in Pontevedra at the end of November.
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 Increases of D. acuminata population in the Rías were not associated with shelf waters. Probably in situ growth.
Additional Environmental information: D. acuminata was found within the whole range of temperature and salinity values common in 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: