General Information

Event name: CA-95-001
Country: CANADA
Nature of the harmful event:
Seafood toxins
Event directly affected:
Toxicity detected: Yes (Approximate range: 10,610 g DA / 100 g.)
Associated syndrome: ASP
Unexplained toxicity: No
Species implicated in toxin transmission (transvector):
Report the outcome of a monitoring programme: Yes
Event occurred before in this location: Yes (Although P. pseudodelicatissima has been observed annually in the Bay of Fundy, the only other year that shellfish harvesting areas were closed to harvesting was during 1988.)
Individuals to contact: MARTIN, Jennifer

Location & Date

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Location: Latitude: , Longitude:
General location information: Northwestern Bay of Fundy., Scotia Fundy Region
HAB Area code(s): CA-22
Additional location information:
Bloom event dates (yyyy/mm/dd): Event Date:1995-08-28
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information: Late August - mid September.


Causative organism known: Yes
Causative Species/Genus: Pseudo-nitzschia pseudodelicatissima (1,374,144 cells/L)
August 28, highest concentration at the Wolves isl
Co-Ocurring Species/Genus:
Chlorophyll concentration, if known: µg/l
Additional bloom information: Cells were obserbed throughout the year with highest concentrations observed during June and August.
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): Salinity: 32 Current Velocity: 0
Nutrient information:
Temperature Range During Event: Max: 12 °C, Min: 8 °C
Salinity Range During Event:
Bloom location in the water column:
Growth: Advected
In situ
Growth Comments In situ as well as advected.
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: The highest level of DA measured was 10,610 g DA / 100 g in Mytilus edulis on September 2 at Lepreau Harbour.
Economic losses:
Management decision: Shellfish harvesting areas in the south-western Bay of Fundy were closed to harvesting due to levels of domoic acid exceeding the regularoty limit of 20 g/g.
Additional harmful effect information:
Updated at 08:25 on 25 Sep 2013