| Event name: | CA-92-004 | |
| 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: Low detectable levels of DSP toxins.) | |
| Associated syndrome: | DSP | |
| Unexplained toxicity: | No | |
| Species implicated in toxin transmission (transvector): | ||
| Report the outcome of a monitoring programme: | Yes | |
| Event occurred before in this location: | Yes (DSP in mussels was previously found at the same location in August 1990, June 1991, and August 1992.) | |
| Individuals to contact: | de FREITAS, Anthony | |
| Location: | Latitude: , Longitude: | |
| General location information: |
Halifax Eastern Shore, Scotia Fundy Region HAB Area code(s): CA-17 |
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| Additional location information: | Mahone Bay | |
| Bloom event dates (yyyy/mm/dd): | ||
| Quarantine levels dates (yyyy/mm/dd): | ||
| Additional date-related information: | August - September. | |
| Causative organism known: | No | |
| Causative Species/Genus: | ||
| Co-Ocurring Species/Genus: | ||
| Chlorophyll concentration, if known: | µg/l | |
| Additional bloom information: | Causative species not established. | |
| Event-related bibliography: | ||
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| Nutrient information: | ||||||||||||||||||||||||||
| Temperature Range During Event: | Max: 18 °C, Min: 12 °C | |||||||||||||||||||||||||
| Salinity Range During Event: | ||||||||||||||||||||||||||
| Bloom location in the water column: | ||||||||||||||||||||||||||
| Growth: | ||||||||||||||||||||||||||
| Growth Comments | Not known. | |||||||||||||||||||||||||
| Additional Environmental information: | ||||||||||||||||||||||||||
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| Kit used: | Type of kit used: | ||||||||||||||||
| Additional information: | Low detectable levels of DSP toxins were found in cultured mussels (Mytilus edulis). Toxin levels peaked during the last week in August, with the DTX-1 toxin as the main component. Levels of toxin became undetectable by late September. No toxin levels were detected in plankton samples. | ||||||||||||||||
| Economic losses: | |||||||||||||||||
| Management decision: | An official closure of harvesting was implemented. This was the first closure in Canada due to DSP toxins | ||||||||||||||||
| Additional harmful effect information: | |||||||||||||||||
