| Event name: | CA-90-009 | |
| Country: | CANADA | |
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Nature of the harmful event: |
Seafood toxins | |
|
Event directly affected: |
Shellfish | |
| Toxicity detected: | No | |
| Associated syndrome: | ||
| Unexplained toxicity: | No | |
| Species implicated in toxin transmission (transvector): | ||
| Report the outcome of a monitoring programme: | Yes | |
| Event occurred before in this location: | Yes (First recorded in autumn 1987, and has recurred during the autumns of 1988 and 1989, but to a lesser degree each year.) | |
| Individuals to contact: | SMITH, John C. | |
| Location: | Latitude: , Longitude: | |
| General location information: |
Eastern Prince Edward Island, Gulf Region HAB Area code(s): CA-24 |
|
| Additional location information: | Cardigan Bay | |
| Bloom event dates (yyyy/mm/dd): | ||
| Quarantine levels dates (yyyy/mm/dd): | ||
| Additional date-related information: | Mid-October- late November | |
| Causative organism known: | Yes | |
| Causative Species/Genus: |
Nitzschia pungens
(700,000 cells/L)
In early November (Brudewell River). |
|
| 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: | Max: 31, Min: 27 | |||||||||||||||||||||||||
| Bloom location in the water column: | ||||||||||||||||||||||||||
| Growth: | ||||||||||||||||||||||||||
| Growth Comments | Most probably, the population originated within the estuaryies, as no N. pungens cells were found more than one km offshore of the mouth of Cardigan Bay. | |||||||||||||||||||||||||
| Additional Environmental information: | Temperature range during the bloom period: 15º C in October to 4º C in November. | |||||||||||||||||||||||||
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| Kit used: | Type of kit used: | ||||||
| Additional information: | |||||||
| Economic losses: | |||||||
| Management decision: | None | ||||||
| Additional harmful effect information: | The domoic acid levels in shellfish never exceeded the 20 µg/g limit, and for the first autumn since 1987, no estuaries were closed to mussel harvesting. | ||||||
