General Information

Event name: GT-04-001
Nature of the harmful event:
Water Discoloration , High Phyto concentration , Mass mortalities , Foam/Mucilage in the coast
Event directly affected:
Natural Fish
Toxicity detected: No
Associated syndrome: OTHER
Unexplained toxicity: Yes (Ictiotoxic)
Species implicated in toxin transmission (transvector):
Report the outcome of a monitoring programme: Yes (Monitoring from Universidad de San Carlos de Guatemala (USAC-CEMA))
Event occurred before in this location:
Individuals to contact:

Location & Date

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Location: Latitude: 13.911667, Longitude: -90.780556
General location information: Boya Recalada, Frente a Puerto Quetzal
HAB Area code(s): GUA-5
Additional location information:
Bloom event dates (yyyy/mm/dd): Event Date:2004-05-30
Start: 2004-05-28, End: 2004-06-27
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information:


Causative organism known: Yes
Causative Species/Genus: Cochlodinium polykrikoides Margalef 1961 (964,000 cells/L)
Co-Ocurring Species/Genus:
Chlorophyll concentration, if known: (>20 mg/m3). µg/l
Additional bloom information: Foam, mucilage and bad smell
Event-related bibliography:

Environmental Conditions

Weather: raining season Turbidity (NTU): Wind direction:
Stratified water: Oxygen content (nL/L): Wind velocity:
Temperature (°C): 31.8 Oxygen saturation %: Current Direction:
Sechhi disk (m): 2 Salinity: 32.5 ppm Current Velocity:
Nutrient information: NITRATE: 5.3 mg/L
PHOSPHATE: 1.64 mg/L
Temperature Range During Event: Max: 32.7C °C, Min: 30.3C °C
Salinity Range During Event: Max: 32.8 ppm, Min: 32.1 ppm
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
Kit used: Type of kit used:
Additional information:
Economic losses:
Management decision:
Additional harmful effect information:
Created at 09:01 on 28 Oct 2015
Updated at 04:56 on 15 May 2018