General Information

Event name: CL-09-001
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: Max. ~18.000 ug STXeq 100 g-1)
Associated syndrome: PSP
Unexplained toxicity: Yes (suspected ichthyotoxicity)
Species implicated in toxin transmission (transvector): Mytilus chilensis
Report the outcome of a monitoring programme: Yes (PSMB)
Event occurred before in this location: Yes (Yes, but that was the first time with a very high intensity)
Individuals to contact: Jorge I. Mardones

Location & Date

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Location: Latitude: , Longitude:
General location information: Aysen, Aysen
HAB Area code(s): CL-03
Additional location information:
Bloom event dates (yyyy/mm/dd): Start: 2009-01-15, End: 2009-04-15
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information:


Causative organism known: Yes
Causative Species/Genus: Alexandrium catenella (6000000 cells/L)
Co-Ocurring Species/Genus: Protoceratium reticulatum (100000 cells/L)
Chlorophyll concentration, if known: µg/l
Additional bloom information:
Event-related bibliography: Mardones, J.I., Clement, A., Rojas, X., Aparicio, C., 2010. Alexandrium catenella during 2009 in Chilean waters,and recent expansion to coastal ocean. HAN 41.

Environmental Conditions

Weather: sunny and warm Turbidity (NTU): Wind direction:
Stratified water: Oxygen content (nL/L): Wind velocity:
Temperature (°C): 17 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
Alexandrium catenella Saxitoxins ~18,000 ug STXeq 100 Bioassay-Mouse
Kit used: Type of kit used:
Additional information:
Economic losses: salmon mortality >$US 10M
Management decision:
Additional harmful effect information: 2 fatalities and 20 intoxicated
Created at 06:01 on 11 Sep 2017
Updated at 06:24 on 11 Sep 2017