General Information

Event name: CA-05-044
Country: CANADA
Nature of the harmful event:
High Phyto concentration , Seafood toxins
Event directly affected:
Shellfish
Toxicity detected: Yes (Approximate range: 84-256ug/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 toxins recurrently accumulate year after year in the Estuary and Gulf of St. Lawrence)
Individuals to contact: BONNEAU, Esther , SAUVÉ, Gilbert , STARR, Michel

Location & Date

[View larger map]
Location: Latitude: 50.120833, Longitude: -66.593056
General location information: North coast Anticosti Gyre, Quebec Region
HAB Area code(s): CA-04
Additional location information: Q-3;200km vicinity of Sept-Iles; Natural mussel harvesting area
Bloom event dates (yyyy/mm/dd): Event Date:2005-06-25
Start: 2005-06-11, End: 2005-07-16
Quarantine levels dates (yyyy/mm/dd): First detection: 2005-06-25, End: 2005-07-09
Additional date-related information:

Microalgae

Causative organism known: Yes
Causative Species/Genus: Alexandrium tamarense (8520 cells/L)
2005-06-25
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): Min. 1.0 Max. 4.0 Salinity: Current Velocity:
Nutrient information: NITRATE: Min. 0.7 Max. 2.7
PHOSPHATE: Min. 0.7 Max. 0.7
SILICATE: Min. 3.1 Max. 14.2
Temperature Range During Event: Max: 18 °C, Min: 14 °C
Salinity Range During Event: Max: 27.8, Min: 24.3
Bloom location in the water column:
Surface
Growth:
In situ
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: found in Mytilus edulis
Updated at 06:11 on 18 Sep 2013
IOC/UNESCO ISSHA
IOC/UNESCO ICES PICES