General Information

Event name: CA-09-033
Country: CANADA
Nature of the harmful event:
High Phyto concentration , Seafood toxins
Event directly affected:
Toxicity detected: Yes (Approximate range: 80ugSTXeq/100g-420ugSTXeq/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

[View larger map]
Location: Latitude: 48.663611, Longitude: -68.076667
General location information: South coast St. Lawrence Estuary, Quebec Region
HAB Area code(s): CA-07
Additional location information: Q-7; 200km vicinity of Mont-Joli; Natural mussel harvesting area and HAMP station at MLI
Bloom event dates (yyyy/mm/dd): Event Date:2009-08-05
Start: 2009-07-08, End: 2009-08-13
Quarantine levels dates (yyyy/mm/dd): First detection: 2009-07-08, End: 2009-08-12
Additional date-related information:


Causative organism known: Yes
Causative Species/Genus: Alexandrium tamarense (94680 cells/L)
Co-Ocurring Species/Genus: Alexandrium ostenfeldii (960 cells/L)
Chlorophyll concentration, if known: 8.60ug/l date chosen in function of the maximum of A. tamarense cells/l 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. 2.8 Max. 6.7 Salinity: Current Velocity:
Nutrient information: NITRATE: Min. 0.45 Max. 11.60
PHOSPHATE: Min. 0.11 Max. 0.81
SILICATE: Min. 2.51 Max. 14.35
Temperature Range During Event: Max: 16 °C, Min: 9.5 °C
Salinity Range During Event: Max: 27.3, Min: 20.9
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 02:35 on 18 Sep 2013