General Information

Event name: CL-00-001
Country: CHILE
Nature of the harmful event:
Mass mortalities
Event directly affected:
Aquaculture Fish
Toxicity detected: No
Associated syndrome:
Unexplained toxicity:
Species implicated in toxin transmission (transvector):
Report the outcome of a monitoring programme: Yes
Event occurred before in this location: Yes (After the massive event in 1988, this area became a niche site for the growth of H. akashiwo)
Individuals to contact: Jorge I. Mardones

Location & Date

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Location: Latitude: , Longitude:
General location information: Seno Reloncavi and Chiloe Island, Los Lagos
HAB Area code(s): CL-15
Additional location information: Estuarine waters; highly estratified water column
Bloom event dates (yyyy/mm/dd): Event Date:2000-02-17
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information:


Causative organism known: No
Causative Species/Genus: Heterosigma akashiwo (0,4 cells/L)
Salmon mortality at low cell concentration
Co-Ocurring Species/Genus:
Chlorophyll concentration, if known: µg/l
Additional bloom information:
Event-related bibliography: Mardones, J.I., Clement, A., Rojas., X., 2012. Monitoring potentially ichthyotoxic phytoflagellates in southern fjords of Chile. HAN 45, 6-7.

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:
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: Salmon mortality in the Re˝ihue fjord reached up to 40%.
Management decision:
Additional harmful effect information:
Created at 02:48 on 14 Sep 2017