| Event name: | CA-97-005 | |
| Country: | CANADA | |
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Nature of the harmful event: |
Seafood toxins | |
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Event directly affected: |
Humans | |
| Toxicity detected: | Yes | |
| Associated syndrome: | PSP | |
| Unexplained toxicity: | No | |
| Species implicated in toxin transmission (transvector): | Clams. | |
| Report the outcome of a monitoring programme: | Yes | |
| Event occurred before in this location: | Yes (PSP toxicity has been measured by the mouse bioassay technique on a regular basis since 1961 in the St. Lawrence. Algae are monitored at the coastal stations only since 1989.) | |
| Individuals to contact: | LEVASSEUR, Maurice , SAUVÉ, Gilbert | |
| Location: | Latitude: , Longitude: | |
| General location information: |
Gaspe, Quebec Region HAB Area code(s): CA-09 |
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| Additional location information: | Penouille Station. Harmful algae are monitored on a weekly basis at 11 stations in the Gulf of St. Lawrence since 1989 (See Figure 1 in the Complementary Information Form). | |
| Bloom event dates (yyyy/mm/dd): |
Event Date:1997-07-02 Start: 1997-07-02, |
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| Quarantine levels dates (yyyy/mm/dd): | ||
| Additional date-related information: | ||
| Causative organism known: | Yes | |
| Causative Species/Genus: |
Alexandrium ostenfeldii
(180 cells/L)
Highest concentration, 2/07/97. |
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| Co-Ocurring Species/Genus: | ||
| Chlorophyll concentration, if known: | µg/l | |
| Additional bloom information: | ||
| Event-related bibliography: | ||
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| Nutrient information: | ||||||||||||||||||||||||||
| Temperature Range During Event: | Max: °C, Min: °C | |||||||||||||||||||||||||
| Salinity Range During Event: | ||||||||||||||||||||||||||
| Bloom location in the water column: | ||||||||||||||||||||||||||
| Growth: |
In situ |
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| Growth Comments | ||||||||||||||||||||||||||
| Additional Environmental information: | ||||||||||||||||||||||||||
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| Kit used: | Type of kit used: | ||||||
| Additional information: | PSP measured by mouse bioassay. | ||||||
| Economic losses: | |||||||
| Management decision: | Shellfish areas with paralytic shellfish toxins concentration exceeding 80 µg STX equi./100 g (as determined by the mouse bioassay technique) were closed to harvesting during variable periods of time during summer months of 1996 and 1997. | ||||||
| Additional harmful effect information: | Paralytic shellfish toxins concentration have exceeded 80 µg STX equi./100 g (as determined by the mouse bioassay technique) at several stations in 1997. Two persons became ill after eating toxic clams near Havre-St-Pierre, an area usually toxin-free. | ||||||
