General Information

Event name: CA-02-011
Country: CANADA
Nature of the harmful event:
Water Discoloration , High Phyto concentration , Seafood toxins , Mass mortalities
Event directly affected:
Aquaculture Fish
Toxicity detected: Yes (Approximate range: 2500 g STXeq/ 100g (CFIA data).)
Associated syndrome: PSP
Unexplained toxicity: No
Species implicated in toxin transmission (transvector):
Report the outcome of a monitoring programme: Yes (Harmful Algae Monitoring Program)
Event occurred before in this location: No
Individuals to contact: WHYTE, Ian

Location & Date

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Location: Latitude: 49.625000, Longitude: -123.829722
General location information: Lower Strait of Georgia, Pacific Region
HAB Area code(s): CA-37
Additional location information: Bloom was fairly widespread in Sechelt Inlet
Bloom event dates (yyyy/mm/dd):
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information: bloom was in Sechelt Inlet from early October to early November, mortalities occurred mid-October


Causative organism known: Yes
Causative Species/Genus: Alexandrium catenella (14000,000 cells/L)
Co-Ocurring Species/Genus: Chaetoceros concavicornis (10,000 cells/L)
Chlorophyll concentration, if known: µg/l
Additional bloom information: Chaetoceros concavicornis was affecting fish only minimally until A. catenella bloom moved into farm site.
Event-related bibliography:

Environmental Conditions

Weather: Turbidity (NTU): Wind direction:
Stratified water: No Oxygen content (nL/L): Wind velocity:
Temperature (°C): ~11 Oxygen saturation %: Current Direction:
Sechhi disk (m): Salinity: 27 - 30 Current Velocity: 0
Nutrient information:
Temperature Range During Event: Max: °C, Min: °C
Salinity Range During Event:
Bloom location in the water column:
Growth: Advected
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 03:12 on 26 Sep 2013