General Information

Event name: CA-97-001
Country: CANADA
Nature of the harmful event:
High Phyto concentration
Event directly affected:
Toxicity detected: No
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 years that shellfish harvesting areas were closed to harvesting were during 1988 and 1995.)
Individuals to contact: MARTIN, Jennifer

Location & Date

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Location: Latitude: , Longitude:
General location information: Northwest Bay of Fundy., Scotia Fundy Region
HAB Area code(s): CA-22
Additional location information: (See Figure 1 in the Complementary Information Form)
Bloom event dates (yyyy/mm/dd): Event Date:1997-08-20
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information: June, late August - mid September 97.


Causative organism known: Yes
Causative Species/Genus: Pseudo-nitzschia pseudodelicatissima (151,776 cells/L)
August 20 at an offshore sampling location at the Wolves.
Co-Ocurring Species/Genus:
Chlorophyll concentration, if known: µg/l
Additional bloom information: Cells were observed throughout the year with highest concentrations observed during June and August.
Event-related bibliography:

Environmental Conditions

Weather: Turbidity (NTU): Wind direction:
Stratified water: No 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: Water column mixed inshore, stratified offshore.

Toxin Assay Information

Species containing the toxin Toxin type Toxin details Max. concentration Assay type
Kit used: Type of kit used:
Additional information: Domoic acid was not detected in shellfish.
Economic losses:
Management decision: No shellfish areas were closed to harvesting.
Additional harmful effect information:
Updated at 02:04 on 26 Sep 2013