| Event name: | PT-93-007 | |
| Country: | PORTUGAL | |
|
Nature of the harmful event: |
Seafood toxins | |
|
Event directly affected: |
||
| Toxicity detected: | Yes (Approximate range: 496 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: | Yes (Since 1986 and until 1990 Gymnodinium catenatum was responsible for PSP occurrences at the portuguese coast north from Roca cap. In 1991 the problem did not occur and in 1992 it appeared again but displaced from the usual area, now at the south coast of Lisbon and at the Algarve coast. 1993 was the first year with PSP almost all arround the year and covering as well almost all the coast seaming that there was indeed a spreading of the species from south to north.) | |
| Individuals to contact: | SAMPAYO, Mª Antonia , VILARINHO, Mª da Graça | |
| Location: | Latitude: , Longitude: | |
| General location information: |
Lisbon coast., HAB Area code(s): PT-04 |
|
| Additional location information: | ||
| Bloom event dates (yyyy/mm/dd): |
Event Date:1996-03-23 |
|
| Quarantine levels dates (yyyy/mm/dd): | ||
| Additional date-related information: | February-March. | |
| Causative organism known: | Yes | |
| Causative Species/Genus: |
Gymnodinium catenatum
(1,000 cells/L)
23 March. |
|
| Co-Ocurring Species/Genus: | ||
| Chlorophyll concentration, if known: | µg/l | |
| Additional bloom information: | ||
| Event-related bibliography: | ||
|
||||||||||||||||||||||||||
| Nutrient information: | ||||||||||||||||||||||||||
| Temperature Range During Event: | Max: 20 °C, Min: 14 °C | |||||||||||||||||||||||||
| Salinity Range During Event: | Max: 36, Min: 20 | |||||||||||||||||||||||||
| Bloom location in the water column: | ||||||||||||||||||||||||||
| Growth: |
Advected
In situ |
|||||||||||||||||||||||||
| Growth Comments | Most probably a combination of both. | |||||||||||||||||||||||||
| Additional Environmental information: | ||||||||||||||||||||||||||
|
|||||||
| Kit used: No | Type of kit used: | ||||||
| Additional information: | Toxin accumulated in Ensis siliqua and Donax trunculus. | ||||||
| Economic losses: | |||||||
| Management decision: | Bivalve species with PSP values over 80 µg/100g closed to harvest. | ||||||
| Additional harmful effect information: | Most of the bivalve molluscs from these regions presented PSP toxins however some of them did not reach the 80 µg/100 g threshold. - Lisbon coast: Ensis silicua and Donax trunculus. | ||||||
