Harmful Algal Information System: Event CA-90-001

General Information

Event name:	CA-90-001
Country:	CANADA
Nature of the harmful event:	Seafood toxins
Event directly affected:	Shellfish
Toxicity detected:	No
Associated syndrome:
Unexplained toxicity:	No
Species implicated in toxin transmission (transvector):
Report the outcome of a monitoring programme:	Yes
Event occurred before in this location:	Yes (N. pseudodelicatissima occurs annually in the Bay of Fundy, although shellfish areas were only closed to harvestion 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 HAB Area code(s): CA-22
Additional location information:
Bloom event dates (yyyy/mm/dd):
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information:

Microalgae

Causative organism known:	Yes
Causative Species/Genus:	Nitzschia pseudodelicatissima (1,500 cells/L)
Co-Ocurring Species/Genus:
Chlorophyll concentration, if known:	µg/l
Additional bloom information:	Determined by surface water samples preserved in 2.5% formalin acetic acid and counted with an inverted microscope.
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: 13 °C, Min: 9 °C

Salinity Range During Event:

Bloom location in the water column:

Growth:

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:

None.

Additional harmful effect information:

No shellfish areas were closed due to the accumulation of unacceptable levels of domoic acid. Domoic acid extractions were conducted at Black's Harbour, New Brunswick and analysis in Halifax, Nova Scotia, Department of Fisheries and Oceans.

Updated at 05:57 on 17 Sep 2018