General Information

Event name: GT-22-001
Nature of the harmful event:
Seafood toxins
Event directly affected:
Toxicity detected: Yes (Approximate range: 7,069.4 a 14,099 UR/100gr)
Associated syndrome: PSP
Unexplained toxicity:
Species implicated in toxin transmission (transvector): Almejas (Tagelus sp.)
Report the outcome of a monitoring programme: Yes (seguimiento en muestreo de moluscos bivalvos para análisis de saxitoxinas)
Event occurred before in this location: No
Individuals to contact: PAZ, Karla

Location & Date

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Location: Latitude: , Longitude:
General location information: Madre Vieja, Tiquisate,
HAB Area code(s): GUA-4
Additional location information:
Bloom event dates (yyyy/mm/dd): Event Date:2022-05-03
Start: 2022-05-03, End: 2022-08-16
Quarantine levels dates (yyyy/mm/dd): First detection: 2022-05-03, End: 2022-08-05
Additional date-related information:


Causative organism known: Yes
Causative Species/Genus: Pyrodinium bahamense var. compressum ( cells/L)
Se identificó en contenido estomacal de las almejas.
Co-Ocurring Species/Genus: Noctiluca scintillans ( cells/L)
Se identificó en contenido estomacal de las almejas.
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
Tagelus sp. (Almeja) Saxitoxins 14,099 UR/100gr Bioassay-Mouse
Kit used: Type of kit used:
Additional information: Ensayo en ratones en el Laboratorio Nacional de Salud Pública de Guatemala.
Economic losses:
Management decision: Se procedió a emitir alerta para la zona cercana y luego se estableció veda para el consumo de moluscos bivalvos.
Additional harmful effect information:
Created at 03:50 on 20 Sep 2022
Updated at 04:09 on 20 Sep 2022