General Information

Event name: PT-87-003
Nature of the harmful event:
Seafood toxins
Event directly affected:
Toxicity detected: Yes
Associated syndrome: PSP
Unexplained toxicity: No
Species implicated in toxin transmission (transvector):
Report the outcome of a monitoring programme: Yes
Event occurred before in this location: Yes (1987 October and December on coast North from Cape Carvoeiro.)
Individuals to contact: SAMPAYO, MĒ Antonia

Location & Date

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Location: Latitude: , Longitude:
General location information: off Espinho.,
HAB Area code(s): PT-02
Additional location information:
Bloom event dates (yyyy/mm/dd): Start: 1987-08-24, End: 1987-09-14
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information:


Causative organism known: Yes
Causative Species/Genus: Gymnodinium catenatum (18,000 cells/L)
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: 16 °C, Min: 13 °C
Salinity Range During Event: Max: 35, Min: 20
Bloom location in the water column:
In situ
Growth Comments Probably due to excystment from the previous year population.
Additional Environmental information: No discoloration of water noted.

Toxin Assay Information

Species containing the toxin Toxin type Toxin details Max. concentration Assay type
Kit used: No Type of kit used:
Additional information: PSP in bivalve molluscs. Mouse bioassay AOAC Method 1985.
Economic losses:
Management decision: Harvesting of shellfish banned: off Espinho and Northern Coast 26/8/87-29/10/87 All the coast and coastal lagoons North from NAZARE 8/9/87-21/12/87
Additional harmful effect information:
Checked at 05:38 on 22 Feb 2018