General Information

Event name: CA-98-002
Country: CANADA
Nature of the harmful event:
Seafood toxins
Event directly affected:
Humans
Toxicity detected: Yes (Approximate range: Traces of DTX-1.)
Associated syndrome: DSP
Unexplained toxicity: No
Species implicated in toxin transmission (transvector): Clams.
Report the outcome of a monitoring programme: Yes
Event occurred before in this location: No
Individuals to contact: LEVASSEUR, Maurice , SAUVÉ, Gilbert

Location & Date

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Location: Latitude: , Longitude:
General location information: Iles-de-la-Madeleine, Québec Region
HAB Area code(s): CA-23
Additional location information: Magdalen Islands
Bloom event dates (yyyy/mm/dd):
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information: July 1998.

Microalgae

Causative organism known: No
Causative Species/Genus:
Co-Ocurring Species/Genus:
Chlorophyll concentration, if known: µg/l
Additional bloom information: Examination of the phytoplankton community did not reveal the presence of a known DSP toxind producers.
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:
Growth Comments
Additional Environmental information: Environment: No data available at this time.

Toxin Assay Information

Species containing the toxin Toxin type Toxin details Max. concentration Assay type
Clams Okadaic Acid DTX1 Traces LC
Kit used: Type of kit used:
Additional information:
Economic losses:
Management decision: Shellfish harvesting was banned for several weeks following this event.
Additional harmful effect information:
Updated at 02:24 on 26 Sep 2013
IOC/UNESCO ISSHA
IOC/UNESCO ICES PICES