General Information

Event name: CL-02-001
Country: CHILE
Nature of the harmful event:
Water Discoloration , High Phyto concentration , Seafood toxins , Mass mortalities
Event directly affected:
Aquaculture Fish , Shellfish , Humans
Toxicity detected: Yes (Approximate range: ~22,000 ug STXeq 100g-1)
Associated syndrome: PSP
Unexplained toxicity: Yes (Salmon mortality)
Species implicated in toxin transmission (transvector): Venus antiqua, Mytilus chilensis
Report the outcome of a monitoring programme: Yes (Chilean Government)
Event occurred before in this location: Yes (but with a clear expansion to northern areas)
Individuals to contact: Jorge I. Mardones

Location & Date

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Location: Latitude: , Longitude:
General location information: ChiloÚ Island and northern AysÚn, Los Lagos - AysÚn
HAB Area code(s): CL-08
Additional location information:
Bloom event dates (yyyy/mm/dd): Event Date:2002-03-11
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information:


Causative organism known: Yes
Causative Species/Genus: Alexandrium catenella (1000000 cells/L)
Co-Ocurring Species/Genus:
Chlorophyll concentration, if known: µg/l
Additional bloom information:
Event-related bibliography: Molinet et al., 2003. Spatial and temporal distribution patterns of blooms of Alexandrium catenella on inland seas of northwest Patagonia, Chile. RChHN 76:681-698

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
Venus antiqua Saxitoxins 22,000 ug STXeq 100g Bioassay-Mouse
Kit used: Type of kit used:
Additional information:
Economic losses: 1800 t Salmon mortality
Management decision:
Additional harmful effect information: 3 fatalities and 50 intoxicated
Created at 03:50 on 15 Nov 2017