Harmful Algal Information System: Event CA-92-007

General Information

Event name:	CA-92-007
Country:	CANADA
Nature of the harmful event:	High Phyto concentration
Event directly affected:
Toxicity detected:	No
Associated syndrome:	DSP
Unexplained toxicity:	No
Species implicated in toxin transmission (transvector):
Report the outcome of a monitoring programme:	Yes
Event occurred before in this location:	Yes (Dinophysis is known to be a major component of the summer phytoplankton in this area from surveys carried out since 1988.)
Individuals to contact:	SMITH, John C.

Location & Date

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Location:	Latitude: , Longitude:
General location information:	Miramichi Bay, Gulf Region HAB Area code(s): CA-11
Additional location information:	Miramichi Estuary
Bloom event dates (yyyy/mm/dd):
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information:	June - July.

Microalgae

Causative organism known:	Yes
Causative Species/Genus:	Dinophysis acuminata ( cells/L) Dinophysis norvegica ( cells/L) Dinophysis acuta ( cells/L)
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:	No	Oxygen content (nL/L):		Wind velocity:
Temperature (°C):	17	Oxygen saturation %:		Current Direction:
Sechhi disk (m):		Salinity:	29	Current Velocity:	0

Nutrient information:

Temperature Range During Event:

Max: °C, Min: °C

Salinity Range During Event:

Bloom location in the water column:

Growth:

Growth Comments

Not known.

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 required.

Additional harmful effect information:

Integrated tube samples showed significant numbers of Dinophysis in the region of the plume of the miramichi River. Had unconfirmed reports of very low levels of DSP in shellfish from the Miramichi estuary (ELISA test kit).

Updated at 07:49 on 25 Sep 2013