General Information

Event name: CA-09-025
Country: CANADA
Nature of the harmful event:
Seafood toxins
Event directly affected:
Toxicity detected: Yes (Approximate range: 49.3ug/g-66.6ug/g)
Associated syndrome: ASP
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 (Presence of ASP toxins in the Gulf of St. Lawrence since 1998)
Individuals to contact: SAUVÉ, Gilbert , STARR, Michel

Location & Date

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Location: Latitude: 47.420556, Longitude: -61.904722
General location information: Iles-de-la-Madeleine, Quebec Region
HAB Area code(s): CA-23
Additional location information: Q-12; 100km vicinity of Iles-de-la-Madeleine; Commercial mussel cultivation
Bloom event dates (yyyy/mm/dd):
Quarantine levels dates (yyyy/mm/dd): First detection: 2009-08-10, End: 2009-09-21
Additional date-related information:


Causative organism known: Yes
Causative Species/Genus: Pseudo-nitzschia seriata (440 cells/L)
There are maybe some other species that may contribute to explain the presence of domoic acid (eg. Amphora coffeiformis). However, there is no taxonomic observation supporting this possibility at our HAMP stations.
Co-Ocurring Species/Genus:
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): 2.25min, 4.5max Salinity: Current Velocity:
Nutrient information: NITRATE: 0.07min, 0.16max
PHOSPHATE: 0.21min, 0.69max
SILICATE: 0min, 1.9max
Temperature Range During Event: Max: 21.5 °C, Min: 14.8 °C
Salinity Range During Event: Max: 30.3, Min: 29.5
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 08:48 on 17 Sep 2013