General Information

Event name: PT-95-028
Country: PORTUGAL
Nature of the harmful event:
Seafood toxins
Event directly affected:
Toxicity detected: Yes (Approximate range: 436 g STXeq / 100 g.)
Associated syndrome: PSP
Unexplained toxicity: No
Species implicated in toxin transmission (transvector):
Report the outcome of a monitoring programme: No
Event occurred before in this location: No
Individuals to contact:

Location & Date

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Location: Latitude: , Longitude:
General location information: Arado Estuary, Portimao.
HAB Area code(s): PT-06
Additional location information:
Bloom event dates (yyyy/mm/dd):
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information:

Microalgae

Causative organism known: Yes
Causative Species/Genus: Gymnodinium catenatum (1,000 cells/L)
September 12
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: 22 °C, Min: 14 °C
Salinity Range During Event: Max: 37, Min: 20
Bloom location in the water column:
Growth: Advected
In situ
Growth Comments A combination of both.
Additional Environmental information: This area is Closed all the year due to bacterial contamination.

Toxin Assay Information

Species containing the toxin Toxin type Toxin details Max. concentration Assay type
Ostrea edulis (Oct. 24) Saxitoxins STX eq 436 Bioassay-Mouse
Kit used: No Type of kit used:
Additional information:
Economic losses:
Management decision: Bivalve species with PSP values over 80 g/100g closed to harvest. This area is Closed all the year due to bacterial contamination.
Additional harmful effect information: Almost all exploited bivalve molluscs from this region presented PSP toxins.
Checked at 05:35 on 22 Feb 2018
IOC/UNESCO ISSHA
IOC/UNESCO ICES PICES