| Event name: | PT-04-002 | |
| Country: | PORTUGAL | |
|
Nature of the harmful event: |
Seafood toxins | |
|
Event directly affected: |
Shellfish | |
| Toxicity detected: | Yes (Approximate range: 0.4 - 200 µg/100g OA equiv.) | |
| Associated syndrome: | DSP | |
| Unexplained toxicity: | No | |
| Species implicated in toxin transmission (transvector): | Blue mussels, Grooved carpet shells, Surf clams, Carpet shells, Donax clams, Common cockles, Razor clams. | |
| Report the outcome of a monitoring programme: | Yes (HAB Monitoring programmme) | |
| Event occurred before in this location: | Yes | |
| Individuals to contact: | VILARINHO, Mª da Graça , VALE, Paulo | |
| Location: | Latitude: , Longitude: | |
| General location information: |
whole coast of Portugal, Mainly NW coast of Portugal HAB Area code(s): PT-01 PT-02 PT-03 PT-04 PT-05 PT-06 PT-07 |
|
| Additional location information: | 36º 30' N - 42ºN; 7º - 10º W. 600 km of shoreline. Aveiro (peak of D. acuminata on 2 August and peak of D. acuta on 27 September 2004). Blooms detected on July and lasted until November | |
| Bloom event dates (yyyy/mm/dd): | ||
| Quarantine levels dates (yyyy/mm/dd): | ||
| Additional date-related information: | July-November several events during the above period with a higher incidence along the NW coast (i.e. between Lisbon /Setúbal bays and Porto) | |
| Causative organism known: | Yes | |
| Causative Species/Genus: |
Dinophysis acuminata
(4,250 cells/L)
During peak of August 2004 (Aveiro) Dinophysis acuta (9,500 cells/L) During peak on September 2004 (Aveiro) |
|
| Co-Ocurring Species/Genus: |
Chaetoceros spp.
(3,000 cells/L)
During peak of D. Acuminata Leptocylindrus danicus (5,000 cells/L) During peak of D. Acuminata Proboscia alata (1,500 cells/L) During peak of D. Acuminata Prorocentrum micans (17,000 cells/L) During peak of D. Acuminata Scrippsiella trochoidea (23,000 cells/L) During peak of D. Acuminata Cylindrotheca closterium (8,000 cells/L) During peak of D. Acuta Paralia sulcata (22,000 cells/L) During peak of D. Acuta Dinophysis dens (350 cells/L) During peak of D. Acuta Scrippsiella trochoidea (4,000 cells/L) During peak of D. Acuta |
|
| Chlorophyll concentration, if known: | µg/l | |
| Additional bloom information: | Paralia sulcata D. dens Scrippsiella trochoidea | |
| Event-related bibliography: | ||
|
||||||||||||||||||||||||||
| Nutrient information: | ||||||||||||||||||||||||||
| Temperature Range During Event: | Max: °C, Min: °C | |||||||||||||||||||||||||
| Salinity Range During Event: | ||||||||||||||||||||||||||
| Bloom location in the water column: |
Subsurface |
|||||||||||||||||||||||||
| Growth: |
Advected
In situ |
|||||||||||||||||||||||||
| Growth Comments | ||||||||||||||||||||||||||
| Additional Environmental information: | ||||||||||||||||||||||||||
|
||||||||||||||||||||||||||||||||||||||||||
| Kit used: No | Type of kit used: | |||||||||||||||||||||||||||||||||||||||||
| Additional information: | Assay for OA and DTX2 recovered after alkaline hydrolisis, either by LC-MS or DSP-check immunoassay Kit. ELISA: OA, DTX2, acyl ester of OA and DTX2. | |||||||||||||||||||||||||||||||||||||||||
| Economic losses: | ||||||||||||||||||||||||||||||||||||||||||
| Management decision: | Close the area to bivalve catch. | |||||||||||||||||||||||||||||||||||||||||
| Additional harmful effect information: | ND (not detected) <0.4 µg/100g OA equiv. | |||||||||||||||||||||||||||||||||||||||||
