General Information

Event name: CA-09-035
Country: CANADA
Nature of the harmful event:
High Phyto concentration , Seafood toxins
Event directly affected:
Toxicity detected: Yes (Approximate range: 82ugSTXeq/100g-435ugSTXeq/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: 48.835833, Longitude: -64.414167
General location information: Gaspe, Quebec Region
HAB Area code(s): CA-09
Additional location information: Q-9; 100km vicinity of Penouille; commercial mussel cultivation (Baie de Gaspe)
Bloom event dates (yyyy/mm/dd): Event Date:2009-07-21
Start: 2009-06-11, End: 2009-06-30
Quarantine levels dates (yyyy/mm/dd): First detection: 2009-06-22, End: 2009-08-03
Additional date-related information:


Causative organism known: Yes
Causative Species/Genus: Alexandrium tamarense (380 cells/L)
Co-Ocurring Species/Genus: Alexandrium ostenfeldii (100 cells/L)
Chlorophyll concentration, if known: µg/l
Additional bloom information: very low abundance
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. 3.0 Max. 6.0 Salinity: Current Velocity:
Nutrient information: NITRATE: Min. 0.13 Max. 0.42
PHOSPHATE: Min. 0.10 Max. 0.49
SILICATE: Min. 3.29 Max. 14.93
Temperature Range During Event: Max: 22 °C, Min: 15 °C
Salinity Range During Event: Max: 24.6, Min: 17.5
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 02:56 on 18 Sep 2013