General Information

Event name: CL-88-001
Country: CHILE
Nature of the harmful event:
Water Discoloration , 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: No
Event occurred before in this location: No
Individuals to contact: Jorge I. Mardones

Location & Date

[View larger map]
Location: Latitude: , Longitude:
General location information: Seno Reloncavi and Chiloe Island, Los Lagos
HAB Area code(s): CL-15
Additional location information:
Bloom event dates (yyyy/mm/dd):
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information:


Causative organism known: Yes
Causative Species/Genus: Heterosigma akashiwo (100,000,000 cells/L)
The highest abundance ever detected in the area
Co-Ocurring Species/Genus:
Chlorophyll concentration, if known: µg/l
Additional bloom information:
Event-related bibliography: Clement, A., Lembeye, G., 1993. Phytoplankton monitoring programe in the fish farm region of the south of Chile. In: Smayda, T.J.& Y. Shimizu (eds.). Toxic phytoplankton blooms in the sea, pp. 223-228. Elsevier, Amsterdam.

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: Associated salmon mortalities were higher tan 5000 tons and economic losses about US$11 M.
Management decision: Phytoplankton monitoring programs just started after this massive salmon mortality event caused by H. akashiwo.
Additional harmful effect information:
Created at 02:35 on 14 Sep 2017
Updated at 02:38 on 14 Sep 2017