General Information

Event name: CA-08-074
Country: CANADA
Nature of the harmful event:
High Phyto concentration , Mass mortalities
Event directly affected:
Aquaculture Fish
Toxicity detected: No
Associated syndrome: OTHER
Unexplained toxicity:
Species implicated in toxin transmission (transvector):
Report the outcome of a monitoring programme: Yes (Harmful Algae Monitoring Program)
Event occurred before in this location: Yes
Individuals to contact: HAIGH, Nicky

Location & Date

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Location: Latitude: 52.630000, Longitude: -128.469444
General location information: North Coast, Pacific Region
HAB Area code(s): CA-40
Additional location information: Finlayson Channel and environs; Bloom affected a few farm sites
Bloom event dates (yyyy/mm/dd): Event Date:2008-08-25
Quarantine levels dates (yyyy/mm/dd): First detection: 2008-08-25,
Additional date-related information: Bloom lasted on and off for about six weeks


Causative organism known: Yes
Causative Species/Genus: Heterosigma akashiwo (~12,000,000 cells/L)
max count from samples sent- may have been higher on site
Co-Ocurring Species/Genus:
Chlorophyll concentration, if known: µg/l
Additional bloom information: Unknown mortality levels (farmed salmon) due to this bloom
Event-related bibliography:

Environmental Conditions

Weather: Turbidity (NTU): Wind direction:
Stratified water: Oxygen content (nL/L): 8.1mg/L-9.5 mg/L Wind velocity:
Temperature (°C): 12.2-12.3 Oxygen saturation %: Current Direction:
Sechhi disk (m): Salinity: 27-31 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: Goat Cove; Aug. 25, 2008

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:
Updated at 03:40 on 16 Feb 2018