General Information

Event name: ES-92-001
Country: SPAIN
Nature of the harmful event:
Seafood toxins
Event directly affected:
Toxicity detected: Yes
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 (Up to 10,000,000 cells/L in the same month and ría in 1984 (Blanco et al., 1985). In that bloom they found salinities between 22 and 27 UPS and a temperature of 15º C in the same month.)
Individuals to contact: MANEIRO, Juan , MARIÑO, Joaquin , PAZOS, Yolanda

Location & Date

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Location: Latitude: , Longitude:
General location information: Ría of Ares-Betanzos., Galicia, NW Spain.
HAB Area code(s): ES-05
Additional location information:
Bloom event dates (yyyy/mm/dd):
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information: End of April - the end of May.


Causative organism known: Yes
Causative Species/Genus: Alexandrium minutum (446,000 cells/L)
Inner part of the Ria in mid-May.
Co-Ocurring Species/Genus:
Chlorophyll concentration, if known: µg/l
Additional bloom information: Alexandrium minutum = Alexandrium lusitanicum.
Event-related bibliography:

Environmental Conditions

Weather: Turbidity (NTU): Wind direction:
Stratified water: Yes 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 Most probably in situ.
Additional Environmental information: Bloom associated with high runoff, low salinity and water column stratified (14º C at bottom and 19º C at suface).

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 was equal to or above 80 µg equiv. STX/100 g meat.
Additional harmful effect information: PSP bivalve toxicity.