General Information

Event name: ES-99-016
Country: SPAIN
Nature of the harmful event:
Event directly affected:
Toxicity detected: Yes (Approximate range: 538 µg STX eq / 100 g (Maxim level of PSP detected in Donax trunculus).)
Associated syndrome: PSP
Unexplained toxicity: No
Species implicated in toxin transmission (transvector):
Report the outcome of a monitoring programme: No
Event occurred before in this location: Yes (End November (1994) and End October (1997) with lower concentrations at the same area.)
Individuals to contact: MAMÁN, Luz

Location & Date

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Location: Latitude: , Longitude:
General location information: Huelva coast (Gulf of Cadiz, Atlantic)., Andalucia, Huelva.
HAB Area code(s): ES-09
Additional location information:
Bloom event dates (yyyy/mm/dd):
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information: End October.


Causative organism known: Yes
Causative Species/Genus: Gymnodinium catenatum (42,760 cells/L)
Maximum concentration of 42,760 cells/litre on October 29.
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: 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 Unknown.
Additional Environmental information: Rainfull period (10 days) some days before the G. catenatum peak. Upwelling pulse a week before the peak related with west winds (mainly SW component).

Toxin Assay Information

Species containing the toxin Toxin type Toxin details Max. concentration Assay type
Kit used: Type of kit used:
Additional information:
Economic losses:
Management decision: Closure of affected shellfisheries.
Additional harmful effect information: PSP toxicity in shellfish (tested by mouse bioassay).