General Information

Event name: PT-88-009
Nature of the harmful event:
Event directly affected:
Toxicity detected: No
Associated syndrome: PSP
Unexplained toxicity:
Species implicated in toxin transmission (transvector):
Report the outcome of a monitoring programme: No
Event occurred before in this location: Yes (1987)
Individuals to contact: SAMPAYO, MŞ Antonia , LIMA, Carmen , FRANCA, Susana

Location & Date

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Location: Latitude: , Longitude:
General location information: Óbidos Lagoon,
HAB Area code(s): PT-01
Additional location information: Bivalve mollusc beds
Bloom event dates (yyyy/mm/dd): Start: 1988-08-05, End: 1988-10-24
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information:


Causative organism known: Yes
Causative Species/Genus: Gymnodinium catenatum ( cells/L)
Co-Ocurring Species/Genus:
Chlorophyll concentration, if known: µg/l
Additional bloom information: First occurrence Jul. 27: 500 cells/l; toxin detection: none. Regularly in the phytoplankton until Set. 3. Max. 2000 cells/l on Aug. 2, dominant species Skeletonema costatum (4 x 10(6) cells/l). Other counts in the range 200-1000 cells/l until Oct. 12.
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:
Nutrient information:
Temperature Range During Event: Max: 18 °C, Min: 13 °C
Salinity Range During Event: Max: 35.5, Min: 20
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
Kit used: Type of kit used:
Additional information:
Economic losses:
Management decision: Harvesting of shellfish banned when toxin level upper than 80 µg/100g
Additional harmful effect information: All bivalve molluscs affected. No human illness reported.
Checked at 05:32 on 22 Feb 2018