| Event name: | NO-92-001 | |
| Country: | NORWAY | |
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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 | |
| 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 (A few more dubious historical records. A yearly, more or less large scale and long lasting phenomenon since 1984 according to mouse bioassay. The phenomenom has never been so extensively monitored as in 1992.) | |
| Individuals to contact: | DAHL, Einar , VARRAN, Gesche Torp | |
| Location: | Latitude: , Longitude: | |
| General location information: |
, West coast. HAB Area code(s): NO-08 NO-09 |
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| Additional location information: | The most toxic shellfish were recorded at stations along the west coast. | |
| Bloom event dates (yyyy/mm/dd): | ||
| Quarantine levels dates (yyyy/mm/dd): | ||
| Additional date-related information: | In the months June-November toxic mussels were recorded at one or another station. | |
| Causative organism known: | Yes | |
| Causative Species/Genus: |
Dinophysis spp.
( cells/L)
Most probably |
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| Co-Ocurring Species/Genus: | ||
| Chlorophyll concentration, if known: | µg/l | |
| Additional bloom information: | Most probably Dinophysis spp., but a few examples of bad correlation between the observed concentrations of Dinophysis spp. and toxicity of mussels were recorded. | |
| 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 | Along the southern coast there are some evidence that the algae and toxin problems are spread by advection. But along the west coast the 'hot spots' seems to be rather patchy which indicate local concentration of the algae and/or in situ growth. | |||||||||||||||||||||||||
| Additional Environmental information: | The problem seem to occur over a wide range of temperatures and salinities. | |||||||||||||||||||||||||
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| Kit used: | Type of kit used: | |||||||||||
| Additional information: | ||||||||||||
| Economic losses: | ||||||||||||
| Management decision: | Harvesting was locally banned. The public was warned against picking toxic mussels. | |||||||||||
| Additional harmful effect information: | Toxins recorded above the action level according to mouse bioassay. Harvesting and consumption banned. | |||||||||||
