General Information

Event name: SV-05-001
Nature of the harmful event:
High Phyto concentration , Seafood toxins , Mass mortalities
Event directly affected:
Shellfish , Humans
Toxicity detected: Yes (Approximate range: 27.9 to 627.8 µg STX eq/100 g in dead sea turtle)
Associated syndrome: PSP
Unexplained toxicity: No
Species implicated in toxin transmission (transvector): Plicopurpura columellaris
Report the outcome of a monitoring programme: No
Event occurred before in this location:
Individuals to contact: RABALAIS, Nancy , AMAYA-MONTERROSA, Oscar , QUINTANILLA, Rebeca

Location & Date

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Location: Latitude: , Longitude:
General location information: ,
HAB Area code(s): ELS-01 ELS-02 ELS-03 ELS-04 ELS-05 ELS-06
Additional location information:
Bloom event dates (yyyy/mm/dd): Event Date:2005-11-01
Start: 2005-11-01, End: 2006-03-31
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information:


Causative organism known: Yes
Causative Species/Genus: Pyrodinium bahamense Plate 1906 var. compressum (Böhm) Steidinger et al. 1980 (48900 cells/L)
Co-Ocurring Species/Genus:
Chlorophyll concentration, if known: µg/l
Additional bloom information:
Event-related bibliography: Licea, Sergio, Armando Navarrete, R Rodriguez, J Bustillos, B Martínez, and C Ramirez. 2008. “Monitoring a Bloom of Pyrodinium Bahamense Var. Compressus Occurring in El Salvador, Guatemala and Mexico (November 2005-March 2006).” In 12th Proceedings of the International Conference on Harmful Algae, edited by O Moestrup, O DoucMoestrup, G Doucette, H Enevoldsen, A Godhe, G Hallegraeff, B Luckas, et al., 219–20. Copenhague: International Society for the Study of Harmful Algae and Intergovernmental Oceanographic Commission of UNESCO. Barraza, J. E., 2009. Food poisoning due to consumption of the marine gastropod Plicopurpura collumellaris in El Salvador. Toxico (54):895-896.

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
Modiolus capax Saxitoxins 20,000 MU/100g Bioassay-Mouse
Crassostrea iridescens Saxitoxins 3970 Bioassay-Mouse
Anadara spp Saxitoxins 1641 Bioassay-Mouse
Plicopurpura columellaris Saxitoxins 7000000 Bioassay-Mouse
Sea turtles Saxitoxins 627.8µgSTX LC
Kit used: Type of kit used:
Additional information:
Economic losses:
Management decision:
Additional harmful effect information: One person died and seven were intoxicated. 206 sea turtles died and numerous jellyfish were found on beaches
Created at 11:36 on 4 Jun 2018