General Information

Event name: PT-04-001
Nature of the harmful event:
Seafood toxins
Event directly affected:
Toxicity detected: Yes (Approximate range: 3.3 - 125.1 g/g)
Associated syndrome: ASP
Unexplained toxicity: No
Species implicated in toxin transmission (transvector): Blue mussels, Carpet shells, Common cockles, Razor clams, Scallops
Report the outcome of a monitoring programme: Yes (HAB Monitoring programme)
Event occurred before in this location: Yes
Individuals to contact: VILARINHO, M da Graa , VALE, Paulo

Location & Date

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Location: Latitude: 37.000000, Longitude: -8.000000
General location information: Viana do Castelo, *Aveiro, **Figueira da Foz,, Mainly NW Coast of Portugal.
HAB Area code(s): PT-02 PT-03
Additional location information: 37 - 42 N; 8 - 10 W.
Bloom event dates (yyyy/mm/dd):
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information: Detection date: *Aveiro: 15 July. **Figueira da Foz, Lisboa: 28 June.


Causative organism known: Yes
Causative Species/Genus: Pseudo-nitzschia spp. (487,300 cells/L)
* Aveiro bloom
Pseudo-nitzschia spp. (315,000 cells/L)
** Figueira da Foz bloom
Co-Ocurring Species/Genus: Cerataulina pelagica (24,000 cells/L)
* Aveiro
Chaetoceros sp. (8,000 cells/L)
* Aveiro
Detonula pumila (7,000 cells/L)
* Aveiro
Leptocylindrus danicus (337,000 cells/L)
* Aveiro
Ceratium fusus (14,000 cells/L)
* Aveiro
Dinophysis acuminata (400 cells/L)
* Aveiro
Dinophysis acuta (550 cells/L)
* Aveiro
Scrippsiella trochoidea (12,000 cells/L)
* Aveiro
Asterionellopsis glacialis (13,000 cells/L)
** Figueira da Foz
Cylindrotheca closterium (31,000 cells/L)
** Figueira da Foz
Druridgea compressa (132,000 cells/L)
** Figueira da Foz
Paralia sulcata (50,000 cells/L)
** Figueira da Foz
Scrippsiella trochoidea (4,000 cells/L)
** Figueira da Foz
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
Blue mussels Domoic Acid DA eq 79.3 g/g Bioassay-Mouse
Carpet shells Domoic Acid DA eq 72.5 g/g Bioassay-Mouse
Common cockles Domoic Acid DA eq 82.7 g/g Bioassay-Mouse
Razor clams Domoic Acid DA eq 37.7 g/g Bioassay-Mouse
Scallops Domoic Acid DA eq 125.1 g/g Other
Kit used: No Type of kit used:
Additional information:
Economic losses:
Management decision:
Additional harmful effect information: ND (not detected) <0.3 g/g
Checked at 05:33 on 22 Feb 2018