General Information

Event name: PT-21-011
Nature of the harmful event:
Seafood toxins
Event directly affected:
Toxicity detected: Yes (Approximate range: >160ugOAequiv/kg)
Associated syndrome: DSP
Unexplained toxicity:
Species implicated in toxin transmission (transvector):
Report the outcome of a monitoring programme: Yes (SNMB)
Event occurred before in this location: Yes
Individuals to contact: Alexandra Silva

Location & Date

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Location: Latitude: , Longitude:
General location information: L7c1+L7c2, South coast
HAB Area code(s): PT-05
Additional location information: PT05+PT06 coastal
Bloom event dates (yyyy/mm/dd):
Quarantine levels dates (yyyy/mm/dd): First detection: 2021-06-23, End: 2021-07-09
Additional date-related information:


Causative organism known: Yes
Causative Species/Genus: Dinophysis spp. (60 cells/L)
several Dinophysis species involved, D.ovum, D.rotundata, D.caudata. It is thoght that shellfih toxification at site was due to long term exposure to low concentrations of Dinophysis, since prior the event
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: 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: °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
Donax truncullus Okadaic Acid 209 ugOAeq LC-MS
Mityllus Okadaic Acid 163 ugOAequiv/Kg LC-MS
Kit used: Type of kit used:
Additional information:
Economic losses:
Management decision: ban on harvesting
Additional harmful effect information:
Created at 11:09 on 17 Mar 2022
Updated at 11:10 on 17 Mar 2022