General Information

Event name: CA-09-027
Country: CANADA
Nature of the harmful event:
High Phyto concentration , Seafood toxins
Event directly affected:
Toxicity detected: Yes (Approximate range: 84ugSTXeq/100g-144ugSTXeq/100g)
Associated syndrome: PSP
Unexplained toxicity: No
Species implicated in toxin transmission (transvector):
Report the outcome of a monitoring programme: Yes (Monitoring Program of Toxic and Harmful Algae)
Event occurred before in this location: Yes (Psp toxin events are a recurrent phenomenon in the Estuary and Gulf of St. Lawrence)
Individuals to contact: SAUVÉ, Gilbert , STARR, Michel

Location & Date

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Location: Latitude: 49.019722, Longitude: -68.429722
General location information: North coast St. Lawrence Estuary, Quebec Region
HAB Area code(s): CA-05
Additional location information: Q-2; 200km vicinity of Baie-Comeau; Natural mussel harvesting area
Bloom event dates (yyyy/mm/dd): Event Date:2009-07-18
Start: 2009-06-29, End: 2009-07-13
Quarantine levels dates (yyyy/mm/dd): First detection: 2009-07-18, End: 2009-07-26
Additional date-related information:


Causative organism known: Yes
Causative Species/Genus: Alexandrium tamarense (6440 cells/L)
Co-Ocurring Species/Genus: Alexandrium ostenfeldii (100 cells/L)
Chlorophyll concentration, if known: µg/l
Additional bloom information:
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): Min. 4.0 Max. 6.0 Salinity: Current Velocity:
Nutrient information: NITRATE: Min. 2.19 Max. 3.15
PHOSPHATE: Min. 0.36 Max0.69
SILICATE: Min. 10.03 Max. 15.77
Temperature Range During Event: Max: 16 °C, Min: 15 °C
Salinity Range During Event: Max: 24.1, Min: 23.3
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 02:12 on 18 Sep 2013