General Information

Event name: CA-87-003
Country: CANADA
Nature of the harmful event:
Seafood toxins
Event directly affected:
Toxicity detected: Yes
Associated syndrome: PSP
Unexplained toxicity: No
Species implicated in toxin transmission (transvector):
Report the outcome of a monitoring programme: Yes
Event occurred before in this location: Yes
Individuals to contact: WHITE, David R.L.

Location & Date

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Location: Latitude: , Longitude:
General location information: Southwest Shore, Newfoundland Region
HAB Area code(s): CA-31
Additional location information: Hermitage Bay
Bloom event dates (yyyy/mm/dd):
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information: July- August


Causative organism known: Yes
Causative Species/Genus: Gonyaulax excavata ( cells/L)
Co-Ocurring Species/Genus:
Chlorophyll concentration, if known: µg/l
Additional bloom information: Gonyaulax excavata (= G.tamarensis)
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: Current Velocity: 0
Nutrient information:
Temperature Range During Event: Max: °C, Min: °C
Salinity Range During Event:
Bloom location in the water column:
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: PSP extracts prepared at Department of Fisheries and Oceans Inspection Laboratory, St. John's, Newfoundland. Mouse bioassays done at Department of National Health and Welfare, Tunney's Pasture, Ottawa.
Economic losses:
Management decision: Affected area closed to the harvesting of shellfish.
Additional harmful effect information: Paralytic shellfish poisoning (mussels).
Updated at 06:26 on 25 Sep 2013