General Information

Event name: MX-22-002
Country: MEXICO
Nature of the harmful event:
Seafood toxins
Event directly affected:
Humans
Toxicity detected: Yes (Approximate range: > 0.8 mg STX eq./kg oyster)
Associated syndrome: PSP
Unexplained toxicity:
Species implicated in toxin transmission (transvector): little clams
Report the outcome of a monitoring programme: No
Event occurred before in this location: Yes (2016)
Individuals to contact: Rosalba Alonso Rodriguez

Location & Date

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Location: Latitude: 14.671667, Longitude: -92.410833
General location information: Playa Linda, Tapachula, Chiapas
HAB Area code(s): GT
Additional location information: near the border with Guatemala
Bloom event dates (yyyy/mm/dd):
Quarantine levels dates (yyyy/mm/dd): First detection: 2022-05-25, End: 2022-07-22
Additional date-related information: https://www.tvazteca.com/aztecanoticias/chiap

Microalgae

Causative organism known: No
Causative Species/Genus: Pyrodinium bahamense ( cells/L)
Co-Ocurring Species/Genus:
Chlorophyll concentration, if known: µg/l
Additional bloom information:
Event-related bibliography: https://www.tvazteca.com/aztecanoticias/chiapas-ninos-intoxicados-moluscos-mej

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:
Growth Comments
Additional Environmental information:

Toxin Assay Information

Species containing the toxin Toxin type Toxin details Max. concentration Assay type
Saxitoxins Bioassay-Mouse
Kit used: Type of kit used:
Additional information: Official Method
Economic losses:
Management decision: sanitary closure
Additional harmful effect information: Núñez-Vázquez et al. (2022) https://www.mdpi.com/2072-6651/14/11/760/review_report
Created at 02:41 on 21 Feb 2023
Updated at 09:04 on 26 Feb 2023
IOC/UNESCO ISSHA
IOC/UNESCO ICES PICES