General Information

Event name: MX-17-009
Country: MEXICO
Nature of the harmful event:
Water Discoloration , High Phyto concentration , Seafood toxins
Event directly affected:
Planktonic life , Natural Fish , Shellfish
Toxicity detected: Yes (Approximate range: levels above legal limit 800 ug STX eq./kg mollusk tissue)
Associated syndrome: PSP
Unexplained toxicity: No
Species implicated in toxin transmission (transvector):
Report the outcome of a monitoring programme: Yes (Mareas Rojas (COFEPRIS))
Event occurred before in this location: Yes (2007, 2009)
Individuals to contact: Rosalba Alonso Rodriguez , Ignacio Leyva Valencia

Location & Date

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Location: Latitude: , Longitude:
General location information: Bahia de La Paz, Baja California Sur
HAB Area code(s): GC
Additional location information:
Bloom event dates (yyyy/mm/dd): Start: 2017-06-02, End: 2017-06-28
Quarantine levels dates (yyyy/mm/dd): First detection: 2017-06-10, End: 2017-07-10
Additional date-related information:


Causative organism known: Yes
Causative Species/Genus: Monoraphidium contortum (Thuret) Komárková-Legnevorá 1969 ( cells/L)
Gymnodinium catenatum ( cells/L)
Co-Ocurring Species/Genus: Mesodinium rubrum (Lohmann 1908) Jankowski 1976 ( cells/L)
Chlorophyll concentration, if known: µg/l
Additional bloom information: Contact Ignacio Leyva Valencia
Event-related bibliography: Comisión Federal para la Protección contra Riesgos Sanitarios. 2017.

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
Kit used: Type of kit used:
Additional information:
Economic losses: not evaluated
Management decision: Sanitary closure
Additional harmful effect information: no human poisonings occurred
Created at 01:01 on 4 Jan 2019
Updated at 01:53 on 6 Dec 2021