General Information

Event name: ES-03-012
Country: SPAIN
Nature of the harmful event:
Seafood toxins
Event directly affected:
Toxicity detected: Yes (Approximate range: 201.6 g/g DA.)
Associated syndrome: ASP
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 MARIO)
Event occurred before in this location: Yes (Detected annualy from 1995; generally with a periodicity of two events a year: at the beginning - middle of spring and autumn.)
Individuals to contact: MANEIRO, Juan , PAZOS, Yolanda , MOROO, ngeles

Location & Date

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Location: Latitude: 43.133000, Longitude: -9.162833
General location information: Ra de Camarias., Galicia, NW Spain.
HAB Area code(s): ES-06
Additional location information: The affected area has a high production of molluscs in natural banks: clams, cockles, oyster and scallops are the main species exploited.
Bloom event dates (yyyy/mm/dd): Event Date:2003-10-13
Start: 2003-10-07, End: 2003-10-21
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information:

Microalgae

Causative organism known: Yes
Causative Species/Genus: Pseudo-nitzschia spp. (106,920 cells/L)
43 07.98' N; 090 09.77' W (St. GD) 13/10/03
Co-Ocurring Species/Genus:
Chlorophyll concentration, if known: No data available. µg/l
Additional bloom information: Additional species: No data available.
Event-related bibliography:

Environmental Conditions

Weather: Turbidity (NTU): Wind direction:
Stratified water: No Oxygen content (nL/L): Wind velocity: 18
Temperature (°C): Oxygen saturation %: Current Direction:
Sechhi disk (m): Salinity: Current Velocity: 0
Nutrient information: AMONIUM: 1.85 g/L
NITRATE: 0 g/L
NITRITE: 0.42 g/L
PHOSPHATE: 0.68 g/L
Temperature Range During Event: Max: °C, Min: °C
Salinity Range During Event:
Bloom location in the water column:
Growth:
Growth Comments
Additional Environmental information: Wind velocity: 18 Km/h.

Toxin Assay Information

Species containing the toxin Toxin type Toxin details Max. concentration Assay type
Cockles (Cerastoderma edule) Domoic Acid DA eq 167.4 g/g LC
Clams Domoic Acid DA eq 201.6 g/g LC
Razor clam (Ensis siliqua) Domoic Acid DA eq 82.0 g/g LC
Kit used: No Type of kit used:
Additional information: AOAC Official Method, 1998 991.26, Domoic Acid in Mussels. Liquid Chromatographic Method.
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: Irrelevant effects, because the closures caused by this event were brief (two weeks maximum). Closures due to the presence of toxicity in molluscs is usual in the area and resource exploitation strategies allows to face these closures without great proble
IOC/UNESCO ISSHA
IOC/UNESCO ICES PICES