General Information

Event name: PT-92-002
Country: PORTUGAL
Nature of the harmful event:
Seafood toxins
Event directly affected:
Toxicity detected: Yes (Approximate range: 500 g STXeq / 100 g.)
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 (At this southern part of the country this year was the first with values of PSP over 80 g/100g in bivalves.)
Individuals to contact: SAMPAYO, M Antonia , VILARINHO, M da Graa

Location & Date

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Location: Latitude: , Longitude:
General location information: Algarve coast., Algarve.
HAB Area code(s): PT-06 PT-07
Additional location information:
Bloom event dates (yyyy/mm/dd):
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information: September-October.

Microalgae

Causative organism known: Yes
Causative Species/Genus: Gymnodinium catenatum ( 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: 20 °C, Min: 15 °C
Salinity Range During Event: Max: 36, Min: 34
Bloom location in the water column:
Growth: Advected
In situ
Growth Comments Most probably a combination of both.
Additional Environmental information:

Toxin Assay Information

Species containing the toxin Toxin type Toxin details Max. concentration Assay type
S.solida, V.gallina, M.edulis, O.edulis Saxitoxins STX eq 500 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.
Additional harmful effect information: Most of the bivalve molluscs from these regions presented PSP toxins however some of them did not reach the 80 g/100 g threshold, the most affected were: - Algarve coast: Spisula solida, Venus gallina, Mytilus edulis and Ostrea edulis
Checked at 05:37 on 22 Feb 2018
IOC/UNESCO ISSHA
IOC/UNESCO ICES PICES