| Event name: | CA-98-004 | |
| 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: 960 µg STXeq / 100 g.) | |
| Associated syndrome: | PSP | |
| Unexplained toxicity: | No | |
| Species implicated in toxin transmission (transvector): | ||
| Report the outcome of a monitoring programme: | Yes | |
| Event occurred before in this location: | No | |
| Individuals to contact: | WHYTE, Ian | |
| Location: | Latitude: , Longitude: | |
| General location information: |
various locations in BC, Pacific Region HAB Area code(s): CA-38 |
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| Additional location information: | See Complementary Information. | |
| Bloom event dates (yyyy/mm/dd): | ||
| Quarantine levels dates (yyyy/mm/dd): | ||
| Additional date-related information: | ||
| Causative organism known: | No | |
| Causative Species/Genus: | ||
| Co-Ocurring Species/Genus: | ||
| Chlorophyll concentration, if known: | µg/l | |
| Additional bloom information: | Phytoplankton monitoring is not conducted in British columbia. The occurrence of toxic algae is determined by analysis of biotoxins in the sentinel Mytilus galloprovincialis. Although somewhat anecdotal, densities and distribution of all phytoplankton th | |
| 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: | ||||||||||||||||||||||||||
| Growth Comments | ||||||||||||||||||||||||||
| Additional Environmental information: | ||||||||||||||||||||||||||
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| Kit used: | Type of kit used: | ||||||||||||||||
| Additional information: | The occurrence of toxic algae is determined by analysis of biotoxins in the sentines species Mytilus californianus. The mussels are collected , bagged and distributed to wharves, quays and aquaculture sites in different areas along the north and south coasts (Figues 1 and 2). Samples are collected generally at weekly intervals in the summer and bi-weekly intervals in the winter and shipped to the Canadian Food Inspection Agency, CFIA, for analysis. Mouse bioassay is used for PSP evaluation and an HPLC assay for DA. | ||||||||||||||||
| Economic losses: | |||||||||||||||||
| Management decision: | Closure to bivalve harvest or to clam harvest. | ||||||||||||||||
| Additional harmful effect information: | Table 1 (See complementary Information) presents the highest levels of PSP and DA determined by CFIA. In areas other than those specified in Table 1, levels of PSP were generally <42 µg/100g, or when present were at least under the 80 µg/100g allowable le | ||||||||||||||||
