| Event name: | CA-92-008 | |
| Country: | CANADA | |
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Nature of the harmful event: |
Seafood toxins | |
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Event directly affected: |
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| Toxicity detected: | Yes (Approximate range: 213 - 3,604 µg STXeq /100 g) | |
| 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 (Alexandrium bloom is an annual summer event in these waters.) | |
| Individuals to contact: | HUPPERTZ, Béatrice , LEVASSEUR, Maurice | |
| Location: | Latitude: , Longitude: | |
| General location information: |
South coast St. Lawrence Estuary, Québec Region HAB Area code(s): CA-07 |
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| Additional location information: | Lower St. Lawrence Estuary and the north part of the Gulf of St. Lawrence, Quebec, Canada | |
| Bloom event dates (yyyy/mm/dd): |
Event Date:1992-06-21 Start: 1992-06-02, End: 1992-09-16 |
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| Quarantine levels dates (yyyy/mm/dd): | ||
| Additional date-related information: | Early June-mid September. | |
| Causative organism known: | Yes | |
| Causative Species/Genus: |
Alexandrium excavatum
(39,074 cells/L)
June 21. |
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| Co-Ocurring Species/Genus: | ||
| Chlorophyll concentration, if known: | µg/l | |
| Additional bloom information: | Alexandrium excavatum observed between June 2 and September 16. | |
| Event-related bibliography: | ||
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| Nutrient information: | ||||||||||||||||||||||||||
| Temperature Range During Event: | Max: 17 °C, Min: 8 °C | |||||||||||||||||||||||||
| Salinity Range During Event: | Max: 30, Min: 16 | |||||||||||||||||||||||||
| Bloom location in the water column: | ||||||||||||||||||||||||||
| Growth: |
In situ |
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| Growth Comments | Alexandrium excavatum was found throughout the region, presumably as a result of in situ growth. | |||||||||||||||||||||||||
| Additional Environmental information: | ||||||||||||||||||||||||||
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| Kit used: | Type of kit used: | ||||||||||||||||
| Additional information: | AOAC Mouse Bioassay. | ||||||||||||||||
| Economic losses: | |||||||||||||||||
| Management decision: | Periodic closures of shellfish harvesting zones (harvesting prohibited at toxin values greater than 80 µg STX eq/100 g). | ||||||||||||||||
| Additional harmful effect information: | |||||||||||||||||
