General Information

Event name: ES-00-012
Country: SPAIN
Nature of the harmful event:
Seafood toxins
Event directly affected:
Toxicity detected: Yes (Approximate range: 13.6 - 522 ppm. DA.)
Associated syndrome: ASP
Unexplained toxicity: Yes
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
Individuals to contact: MANEIRO, Juan , PAZOS, Yolanda , MOROÑO, Ángeles

Location & Date

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Location: Latitude: 42.181667, Longitude: -8.685167
General location information: Rías Baixas and Ría de Ares - Betanzos., Galicia, NW Spain.
HAB Area code(s): ES-06 ES-07 ES-08
Additional location information: 42º 10.90' - 43º 24.55' N; 8º 41.11' - 9º 03.00' W. The affected area is dedicated to intensive mussel cultivation in rafts and to a high production of other molluscs in natural banks: clams, cockles, oyster and scallops are the main species exploited.
Bloom event dates (yyyy/mm/dd): Start: 2000-01-03, End: 2000-12-26
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information:


Causative organism known: Yes
Causative Species/Genus: Pseudo-nitzschia spp. ( cells/L)
Co-Ocurring Species/Genus:
Chlorophyll concentration, if known: µg/l
Additional bloom information: The scallop production areas in Galicia remained closed to the harvesting due to the fact that this type of shellfish has been affected by ASP toxicity during the whole year. Pseudo-nitzschia blooms detected (see attached reports) doesn´t seem to explain
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:
Growth Comments
Additional Environmental information:

Toxin Assay Information

Species containing the toxin Toxin type Toxin details Max. concentration Assay type
Scallop (Pecten maximus) Domoic Acid DA eq 522 ppm LC
Kit used: No Type of kit used:
Additional information:
Economic losses: Not evaluated.
Management decision: Harvesting was closed in culture areas when domoic acid concentrations was greater than 20 ppm.
Additional harmful effect information: AOAC Official Method, 1998 991.26, Domoic Acid in Mussels. Liquid Chromatographic Method. Very important socioeconomic effects.