General Information

Event name: CA-09-026
Country: CANADA
Nature of the harmful event:
High Phyto concentration , Seafood toxins
Event directly affected:
Toxicity detected: Yes (Approximate range: 133ug/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: 48.108056, Longitude: -69.716389
General location information: Lower St. Lawrence Estuary, Quebec Region
HAB Area code(s): CA-06
Additional location information: Q-1; 100km vicinity of Tadoussac; Natural mussel harvesting area
Bloom event dates (yyyy/mm/dd): Event Date:2009-07-18
Start: 2009-07-04, End: 2009-07-11
Quarantine levels dates (yyyy/mm/dd): First detection: 2009-07-18, End: 2009-07-18
Additional date-related information:


Causative organism known: Yes
Causative Species/Genus: Alexandrium tamarense (4040 cells/L)
Co-Ocurring Species/Genus: Alexandrium ostenfeldii (40 cells/L)
2009-06-14 & 2009-07-18
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. 4.5 Max. 4.5 Salinity: Current Velocity:
Nutrient information: NITRATE: Min. 8.00 Max. 8.00
PHOSPHATE: Min. 0.55 Max. 0.55
SILICATE: Min. 25.26 Max. 25.26
Temperature Range During Event: Max: 9.4 °C, Min: 9.4 °C
Salinity Range During Event: Max: 20.7, Min: 20.7
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 02:25 on 18 Sep 2013