| Event name: | CA-94-001 | |
| Country: | CANADA | |
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Nature of the harmful event: |
Seafood toxins | |
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Event directly affected: |
Shellfish , Humans | |
| Toxicity detected: | Yes (Approximate range: 4.0 µg DTX-1 /g digestive gland.) | |
| Associated syndrome: | DSP | |
| Unexplained toxicity: | No | |
| Species implicated in toxin transmission (transvector): | Blue mussels collected from wild sites. | |
| Report the outcome of a monitoring programme: | Yes | |
| Event occurred before in this location: | No | |
| Individuals to contact: | PARANJAPE, Madhu A. , POWELL, J. Conrad , McKENZIE, Cynthia | |
| Location: | Latitude: , Longitude: | |
| General location information: |
Bonavista Bay, Newfoundland Region HAB Area code(s): CA-28 |
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| Additional location information: | Various sites in Bonavista Bay. | |
| Bloom event dates (yyyy/mm/dd): | ||
| Quarantine levels dates (yyyy/mm/dd): | ||
| Additional date-related information: | Late October 1993. | |
| Causative organism known: | Yes | |
| Causative Species/Genus: |
Dinophysis norvegica
( cells/L)
Prorocentrum sp. ( cells/L) |
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| Co-Ocurring Species/Genus: | ||
| Chlorophyll concentration, if known: | µg/l | |
| Additional bloom information: | Dinophysis norvegica implicated. Other potentially toxic species of dinoflagellate Prorocentrum sp. were also present in small numbers. | |
| 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 | Unknown. Dinophysis sp., Prorocentrum, and other species of dinoflagellates are usually common in the fall months in this area. Therefore, in situ growth is implied. | |||||||||||||||||||||||||
| Additional Environmental information: | Water column well mixed and isothermal. | |||||||||||||||||||||||||
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| Kit used: | Type of kit used: | ||||||||||||||||
| Additional information: | |||||||||||||||||
| Economic losses: | |||||||||||||||||
| Management decision: | Entire Bay closed for all shellfish harvesting and reopened in August 1994. Closure order NTN-1994-13 revoked NTN-1994-6 NTN-1994-6 revoked NTN-1993-11. NTN-1994-13 reopened the area to harvesting on August 8 1994. | ||||||||||||||||
| Additional harmful effect information: | |||||||||||||||||
