General Information

Event name: CA-08-070
Country: CANADA
Nature of the harmful event:
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 (Bloom last year in this area attributed to)
Individuals to contact: HAIGH, Nicky

Location & Date

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Location: Latitude: 49.850000, Longitude: -126.916667
General location information: Upper West coast of Vancouver Island, Pacific Region
HAB Area code(s): CA-35
Additional location information: Esperanza Inlet; Bloom affected one farm site
Bloom event dates (yyyy/mm/dd):
Quarantine levels dates (yyyy/mm/dd): First detection: 2008-09-16,
Additional date-related information: Mortalities occurred for ~2-3 days, exact extent of mortalities and bloom unknown


Causative organism known: Yes
Causative Species/Genus:
Co-Ocurring Species/Genus: Heterosigma akashiwo (1,100,000 cells/L)
Heterosigma levels were high enough that it may have been a combined toxicity effect
Chlorophyll concentration, if known: µg/l
Additional bloom information: High mortality levels of farmed salmon due to Pseudochattonella bloom. Wild coho salmon were also seen to die in area very close to one of the affected farm sites.
Event-related bibliography:

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
Kit used: Type of kit used:
Additional information:
Economic losses:
Management decision:
Additional harmful effect information:
Updated at 01:57 on 16 Feb 2018