| Event name: | ES-01-014 | |
| Country: | SPAIN | |
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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 (Approximate range: 34.1 µg/g DA.) | |
| Associated syndrome: | ASP | |
| Unexplained toxicity: | No | |
| Species implicated in toxin transmission (transvector): | ||
| Report the outcome of a monitoring programme: | Yes (Monitoring Programme of the Centro de Control do Medio Mariño.) | |
| Event occurred before in this location: | Yes (Detected annualy from 1995; generally with a periodicity of two events a year: at the beginning - middle of spring and autumn.) | |
| Individuals to contact: | MANEIRO, Juan , PAZOS, Yolanda , MOROÑO, Ángeles | |
| Location: | Latitude: 42.181667, Longitude: -8.685167 | |
| General location information: |
Rías Baixas (Vigo, Arousa and Muros) and Ría, Galicia, NW Spain. HAB Area code(s): ES-05 ES-07 ES-08 |
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| Additional location information: | 42º 10.90' - 43º 24.55' N; 8º 41.11' - 9º 03.00' W. The affected area is dedicated to intensive mussel cultivation in rafts and to a high production of other molluscs in natural banks: clams, cockles, oyster and scallops are the main species exploited. | |
| Bloom event dates (yyyy/mm/dd): |
Event Date:2001-09-24 Start: 2001-09-18, End: 2001-10-16 |
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| Quarantine levels dates (yyyy/mm/dd): | ||
| Additional date-related information: | from 04/09/01 to 8/10/01 | |
| Causative organism known: | Yes | |
| Causative Species/Genus: |
Pseudo-nitzschia australis
(852,600 cells/L)
Determined by electronic microscopy. Other species from the same genera are present in low concentrations. |
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| Co-Ocurring Species/Genus: | ||
| Chlorophyll concentration, if known: | 8.14 µg/L Chlª. µg/l | |
| Additional bloom information: | Oceanographic conditions and phytoplankton data presented are those at the maximum Pseudo-nitzschia cell concentration. | |
| Event-related bibliography: | ||
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| Nutrient information: |
AMONIUM:
2.20 µg/L
NITRATE: 2.34 µg/L NITRITE: 0.24 µg/L PHOSPHATE: 0.68 µg/L SILICATE: 0.00 µg/L |
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| Temperature Range During Event: | Max: 17 °C, Min: 12 °C | |||||||||||||||||||||||||
| Salinity Range During Event: | Max: 36, Min: 27 | |||||||||||||||||||||||||
| Bloom location in the water column: |
Subsurface |
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| Growth: |
Advected
In situ |
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| Growth Comments | ||||||||||||||||||||||||||
| Additional Environmental information: | Wind direction: 336º. Wind velocity: 16 Km/h | |||||||||||||||||||||||||
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| Kit used: No | Type of kit used: | ||||||||||||||||
| Additional information: | AOAC Official Method, 1998 991.26, Domoic Acid in Mussels. Liquid Chromatographic Method. | ||||||||||||||||
| Economic losses: | Not evaluated | ||||||||||||||||
| Management decision: | Harvesting was closed in culture areas when domoic acid concentrations was greater than 20 ppm. | ||||||||||||||||
| Additional harmful effect information: | Irrelevant effects, because the closures caused by this event were brief (two weeks maximum). Closures due to the presence of toxicity in molluscs is usual in the area and resource exploitation strategies allows to face these closures without great proble | ||||||||||||||||
