Event name: | PT-88-007 | |
Country: | PORTUGAL | |
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. |