Harmful Algal Information System: Event CA-92-003

General Information

Event name:	CA-92-003
Country:	CANADA
Nature of the harmful event:	High Phyto concentration
Event directly affected:
Toxicity detected:	Yes (Approximate range: Trace levels of DTX1. (DSP))
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:	No
Individuals to contact:	MARTIN, Jennifer

Location & Date

[View larger map]

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:1992-09-14
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information:	No shellfish harvesting areas were closed due to unacceptable levels of DSP toxins in the Bay of Fundy.

Microalgae

Causative organism known:	Yes
Causative Species/Genus:	Dinophysis acuminata (7,000 cells/L) September 14 at Beaver Harbour.
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):	12	Oxygen saturation %:		Current Direction:
Sechhi disk (m):		Salinity:	32	Current Velocity:	0

Nutrient information:

Temperature Range During Event:

Max: °C, Min: °C

Salinity Range During Event:

Bloom location in the water column:

Growth:

Advected

Growth Comments

Additional Environmental information:

Toxin Assay Information

Species containing the toxin	Toxin type	Toxin details	Max. concentration	Assay type
	Okadaic Acid	DTX1	Trace levels	LC

Kit used:

Type of kit used:

Additional information:

Extracts for DSP were made at the Department of Fisheries and Oceans Inspection Laboratory in Black's Harbour, New Brunswick, and HPLC analyses were carried out at the Inspection Branch Laboratory in Halifax, Nova Soctia. Trace levels of DTX1 were measured.

Economic losses:

Management decision:

None required.

Additional harmful effect information:

Updated at 02:46 on 10 Apr 2018