| Event name: | CA-02-001 | |
| Country: | CANADA | |
|
Nature of the harmful event: |
Seafood toxins | |
|
Event directly affected: |
Shellfish | |
| Toxicity detected: | Yes (Approximate range: 1 - 21 ppm (µg/g) DA.) | |
| Associated syndrome: | ASP | |
| Unexplained toxicity: | No | |
| Species implicated in toxin transmission (transvector): | ||
| Report the outcome of a monitoring programme: | Yes (Canadian Shellfish Sanitation Program of the Canadian Food Inspection Agency) | |
| Event occurred before in this location: | No | |
| Individuals to contact: | BATES, Stephen S. , WHITE, John | |
| Location: | Latitude: , Longitude: | |
| General location information: |
Northumberland Shore, Gulf Region HAB Area code(s): CA-13 |
|
| Additional location information: | Malagash. Approximately 200 km of coastline was affected. | |
| Bloom event dates (yyyy/mm/dd): | End: 2002-01-10 | |
| Quarantine levels dates (yyyy/mm/dd): | ||
| Additional date-related information: | Bloom started December 22, 2001 | |
| Causative organism known: | Yes | |
| Causative Species/Genus: |
Pseudo-nitzschia multiseries
( cells/L)
No cell counts are available. The proportion of P. multiseries, as determined by SEM, ranged from 4 to 43% of the Pseudo-nitzschia species present. |
|
| Co-Ocurring Species/Genus: |
Pseudo-nitzschia pseudodelicatissima
( cells/L)
No cell counts are available. The proportion of P. pseudodelicatissima ranged from 8 to 87% of the Pseudo-nitzschia cells. P. pungens was present in low proportions (1 to 2%). P. pseudodelicatissima, P. fraudulenta and P. pungens are non-toxic in the Gulf Pseudo-nitzschia fraudulenta ( cells/L) Pseudo-nitzschia pungens ( cells/L) |
|
| Chlorophyll concentration, if known: | µg/l | |
| Additional bloom information: | This is the first time that a closure due to domoic acid occurred along the northern coast of Nova Scotia. A closure due to domoic acid also occurred from December to January, but in 1987, and along the eastern shore of Prince Edward Island, southern Gul | |
| 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: | Whole column | |||||||||||||||||||||||||
| Growth: | Advected | |||||||||||||||||||||||||
| Growth Comments | The bloom was likely advected into the bays from the southern Gulf of St. Lawrence. | |||||||||||||||||||||||||
| Additional Environmental information: | ||||||||||||||||||||||||||
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| Kit used: | Type of kit used: | |||||||||||
| Additional information: | HPLC-DAD. | |||||||||||
| Economic losses: | Loss of sales due to harvesting closure; amount not known. | |||||||||||
| Management decision: | Closure of affected harvesting area. | |||||||||||
| Additional harmful effect information: | Domoic acid detected in blue mussels (Mytilus edulis); oysters (Crassostrea virginica) showed non-detectable for domoic acid. | |||||||||||
