General Information

Event name: PT-02-002
Nature of the harmful event:
Seafood toxins
Event directly affected:
Toxicity detected: Yes (Approximate range: ND- 1,800 g/100 g OA.)
Associated syndrome: DSP
Unexplained toxicity: No
Species implicated in toxin transmission (transvector): Mollusc bivalves, mainly Mytilus edulis, Cerastoderma edule and Spisula solida.
Report the outcome of a monitoring programme: Yes (HAB Monitoring programmme.)
Event occurred before in this location: Yes
Individuals to contact: VILARINHO, M da Graa , VALE, Paulo

Location & Date

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Location: Latitude: 39.000000, Longitude: -8.833333
General location information: Aveiro, NW Coast
HAB Area code(s): PT-02
Additional location information: Location: 39 - 42N; 8 50' - 9 30' W.
Bloom event dates (yyyy/mm/dd): Start: 2002-05-13, End: 2002-12-01
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information:


Causative organism known: Yes
Causative Species/Genus: Dinophysis acuminata (136,000 cells/L)
During peak of September 2002
Dinophysis acuta ( cells/L)
Co-Ocurring Species/Genus: Proboscia alata (136,000 cells/L)
Other several species, mainly dinoflagellates
Ceratium fusus (62,500 cells/L)
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: °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
M. Edulis, C. Edule, S. solida & S. Plana Okadaic Acid OA eq 1,800 LC-MS
M. Edulis, C. Edule, S. solida & S. Plana Okadaic Acid Positive Bioassay-Mouse
Kit used: No Type of kit used:
Additional information: Bioassay: According to Yasumoto (1984) LC-MS: According to Vale & Sampayo (2002)
Economic losses:
Management decision: Close the area to bivalve catch
Additional harmful effect information:
Checked at 05:33 on 22 Feb 2018