General Information

Event name: UY-01-001
Country: URUGUAY
Nature of the harmful event:
High Phyto concentration , Seafood toxins
Event directly affected:
Toxicity detected: Yes
Associated syndrome: PSP
Unexplained toxicity:
Species implicated in toxin transmission (transvector):
Report the outcome of a monitoring programme: Yes (National Monitoring Program of Harmful Phytoplankton and Shellfish Toxicity)
Event occurred before in this location: Yes (since the first PSP event in 1980, there were several reports in this location)
Individuals to contact: MENDEZ, Silvia

Location & Date

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Location: Latitude: -34.600000, Longitude: -54.150000
General location information: Arachania, Rocha
HAB Area code(s): UY-01
Additional location information:
Bloom event dates (yyyy/mm/dd): Event Date:2001-02-23
Start: 2001-01-31, End: 2001-02-24
Quarantine levels dates (yyyy/mm/dd): First detection: 2001-02-23, End: 2001-03-05
Additional date-related information:


Causative organism known: Yes
Causative Species/Genus: Gymnodinium catenatum Graham 1943 (32000 cells/L)
Co-Ocurring Species/Genus:
Chlorophyll concentration, if known: µg/l
Additional bloom information:
Event-related bibliography: IMpacto de las floraciones algales nocivas en Méndez, S.M.Uruguay, origen, dispersión, monitoreo, control y mitigación.2006. Menafra R. Rodriguez-Gallego L Scarabino F& D Conde (Eds. Bases para la conservación y el manejo de la costa Uruguaya. VIDA SILVESTRE URUGUAY, Montevideo 57-69pp.

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: 24 °C, Min: 22 °C
Salinity Range During Event: Max: 30.8, Min: 29.4
Bloom location in the water column:
In situ
Growth Comments
Additional Environmental information:

Toxin Assay Information

Species containing the toxin Toxin type Toxin details Max. concentration Assay type
Donax hanleyanus Saxitoxins Bioassay-Mouse
Kit used: Type of kit used:
Additional information:
Economic losses:
Management decision: harvesting ban was established to prohibit shellfish commercialisation
Additional harmful effect information:
Updated at 06:04 on 22 Mar 2018
Checked at 03:04 on 9 Oct 2020