General Information

Event name: CA-09-034
Country: CANADA
Nature of the harmful event:
High Phyto concentration , Seafood toxins
Event directly affected:
Toxicity detected: Yes (Approximate range: 84ugSTXeq/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: 49.256389, Longitude: -65.528889
General location information: St. Lawrence River, Quebec Region
HAB Area code(s): CA-08
Additional location information: Q-8; 200km vicinity of Mont-Louis; Natural mussel harvesting area
Bloom event dates (yyyy/mm/dd): Event Date:2009-07-06
Start: 2009-06-28, End: 2009-07-05
Quarantine levels dates (yyyy/mm/dd): First detection: 2009-07-06, End: 2009-07-06
Additional date-related information:


Causative organism known: Yes
Causative Species/Genus: Alexandrium tamarense (3440 cells/L)
Co-Ocurring Species/Genus: Alexandrium ostenfeldii (240 cells/L)
Chlorophyll concentration, if known: µg/l
Additional bloom information: + peaks on 09-08-23(1840 cells/l), 09-09-07(3440cells/l)and 09-09-13(1920 cells/l)but causing no quarantine
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. 2.1 Max. 2.1 Salinity: Current Velocity:
Nutrient information: NITRATE: Min.3.63 Max. 3.63
PHOSPHATE: Min. 0.65 Max. 0.65
SILICATE: Min. 6.03 Max. 6.03
Temperature Range During Event: Max: 8 °C, Min: 8 °C
Salinity Range During Event: Max: 27.9, Min: 27.9
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 02:47 on 18 Sep 2013