Event name: | CA-92-004 | |
Country: | CANADA | |
Nature of the harmful event: |
Seafood toxins | |
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: |