General Information

Event name: PT-94-026
Country: PORTUGAL
Nature of the harmful event:
Seafood toxins
Event directly affected:
Toxicity detected: Yes
Associated syndrome: DSP
Unexplained toxicity: No
Species implicated in toxin transmission (transvector):
Report the outcome of a monitoring programme: Yes
Event occurred before in this location: Yes (Since 1987, the year of the first confirmed occurrence, every year, with a break in 1993, we are having the problem. This year, the most affected area was Aveiro Lagoon as always.)
Individuals to contact: SAMPAYO, M¬ Antonia , VILARINHO, M¬ da Graša

Location & Date

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Location: Latitude: , Longitude:
General location information: Mondego estuary., Figueira de Foz.
HAB Area code(s): PT-03
Additional location information:
Bloom event dates (yyyy/mm/dd): Event Date:1994-07-27
Start: 1994-08-09, End: 1994-11-23
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information:

Microalgae

Causative organism known: Yes
Causative Species/Genus: Dinophysis acuta (5,100 cells/L)
July 27
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: 19 °C, Min: 16 °C
Salinity Range During Event: Max: 36, Min: 24
Bloom location in the water column:
Growth: Advected
In situ
Growth Comments Most probably a combination of both.
Additional Environmental information:

Toxin Assay Information

Species containing the toxin Toxin type Toxin details Max. concentration Assay type
Mytilus edulis & Scrobicularia plana Okadaic Acid Positive Bioassay-Mouse
Kit used: No Type of kit used:
Additional information: DSP toxins were determined both by mouse bioassay and through HPLC.
Economic losses:
Management decision: Harvest of affected species closed during toxication.
Additional harmful effect information: DSP toxins were determined both by the mouse bioassay and through HPLC.
Checked at 05:35 on 22 Feb 2018
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