General Information

Event name: ES-93-002
Country: SPAIN
Nature of the harmful event:
Seafood toxins
Event directly affected:
Toxicity detected: Yes (Approximate range: 6,175 STXeq / 100 g meat.)
Associated syndrome: PSP
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 (Blooms of this species were recorded in the Rías Bajas in autumn 1981, 1985, 1986, 1987, 1988 and 1990. In these two latter years, small populations were also found during summer.)
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, Muros and C, Galicia, NW Spain.
HAB Area code(s): ES-06 ES-07 ES-08
Additional location information:
Bloom event dates (yyyy/mm/dd):
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information: Mid-September to mid-November.


Causative organism known: Yes
Causative Species/Genus: Gymnodinium catenatum (140,080 cells/L)
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: 17 °C, Min: 14 °C
Salinity Range During Event: Max: 36, Min: 30
Bloom location in the water column:
Growth: Advected
Growth Comments The initial population was clearly advected. The initial (and largest) population increase was very sudden and coincided with a downwelling episode. The population was maintained in the Rías for two months period of stratification, and persisted during m
Additional Environmental information:

Toxin Assay Information

Species containing the toxin Toxin type Toxin details Max. concentration Assay type
Kit used: No Type of kit used:
Additional information:
Economic losses:
Management decision: Harvesting was closed when PSP toxin content was equal or higher than reached 80 µg STXeq/100 g meat.
Additional harmful effect information: