| Event name: | PT-88-007 | |
| Country: | PORTUGAL | |
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Nature of the harmful event: |
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Event directly affected: |
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| Toxicity detected: | No | |
| Associated syndrome: | PSP | |
| Unexplained toxicity: | ||
| Species implicated in toxin transmission (transvector): | ||
| Report the outcome of a monitoring programme: | No | |
| Event occurred before in this location: | Yes (1987) | |
| Individuals to contact: | SAMPAYO, Mª Antonia , LIMA, Carmen , FRANCA, Susana | |
| Location: | Latitude: , Longitude: | |
| General location information: |
Mondego Estuary and coast, HAB Area code(s): PT-01 |
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| Additional location information: | Bivalve mollusc beds | |
| Bloom event dates (yyyy/mm/dd): | Start: 88-08-01, End: 88-12-13 | |
| Quarantine levels dates (yyyy/mm/dd): | ||
| Additional date-related information: | ||
| Causative organism known: | Yes | |
| Causative Species/Genus: |
Gymnodinium catenatum
( cells/L)
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| Co-Ocurring Species/Genus: | ||
| Chlorophyll concentration, if known: | µg/l | |
| Additional bloom information: | First occurrence Jun. 14: 500 cells/l; toxin level 50.4 µg/100g in Screbicularia plana. Max. 13000 cells/l on Oct. 18, dominant species D. acuta (24000 cells/l). Other counts mostly in the range 500-7000 cells/l | |
| Event-related bibliography: | ||
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| Nutrient information: | ||||||||||||||||||||||||||
| Temperature Range During Event: | Max: 18 °C, Min: 13 °C | |||||||||||||||||||||||||
| Salinity Range During Event: | Max: 35.5, Min: 20 | |||||||||||||||||||||||||
| Bloom location in the water column: | ||||||||||||||||||||||||||
| Growth: | ||||||||||||||||||||||||||
| Growth Comments | ||||||||||||||||||||||||||
| Additional Environmental information: | Very patchy distibution. Toxicity in bivalve molluscs generally detected two weeks after Dinophysis acuta and/or D. sacculus appear in the phytoplankton. The problem at Portuguese coast is expanding to South. | |||||||||||||||||||||||||
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| Kit used: | Type of kit used: | ||||||
| Additional information: | |||||||
| Economic losses: | |||||||
| Management decision: | Harvesting of shellfish banned when toxin level upper than 80 µg/100g | ||||||
| Additional harmful effect information: | All bivalve molluscs affected (max. 173 µg/100g). No humal illness reported. | ||||||
