| Event name: | VE-91-001 | |
| Country: | VENEZUELA | |
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Nature of the harmful event: |
Water Discoloration , Seafood toxins | |
|
Event directly affected: |
Humans | |
| Toxicity detected: | Yes | |
| Associated syndrome: | PSP | |
| Unexplained toxicity: | No | |
| Species implicated in toxin transmission (transvector): | Perna perna | |
| Report the outcome of a monitoring programme: | No | |
| Event occurred before in this location: | Yes | |
| Individuals to contact: | Lorelys Valerio | |
| Location: | Latitude: 10.986667, Longitude: 63.935556 | |
| General location information: |
Margarita Island, Nueva Esparta HAB Area code(s): VE-04 |
|
| Additional location information: | Manzanillo beach and Guayacan beach | |
| Bloom event dates (yyyy/mm/dd): |
Event Date:1991-08-01 Start: 1991-08-28, End: 1991-10-15 |
|
| Quarantine levels dates (yyyy/mm/dd): | First detection: 1991-08-28, End: 1991-11-28 | |
| Additional date-related information: | ||
| Causative organism known: | Yes | |
| Causative Species/Genus: |
Prorocentrum gracile
( cells/L)
|
|
| Co-Ocurring Species/Genus: |
Gymnodinium catenatum Graham 1943
(20 cells/L)
G. catenatum was the species responsible of intoxication. |
|
| Chlorophyll concentration, if known: | µg/l | |
| Additional bloom information: | ||
| Event-related bibliography: | La Barbera-Sánchez, A., Franco Soler, J., Rojas de Astudillo, L. y Chang-Yen, I. 2004. Paralytic Shellfish Poisoning (PSP) in Margarita Island, Venezuela. Rev. Biol. Trop. 52(Suppl. 1): 89-98. | |
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| Temperature Range During Event: | Max: °C, Min: °C | |||||||||||||||||||||||||
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| Kit used: | Type of kit used: | |||||||||||
| Additional information: | A high liquid chromatographic (HPLC) procedure was recently used on the 1991 samples. The major toxin detected in samples of both locations was decarbamoyl saxitoxin (dcSTX), but low concentrations of saxitoxin were also found in Manzanillo samples. Gonyautoxins GTX1, GTX2 and GTX3 were detected only at Guayacán, while in both locations, decarbamoylgonyatouxin (dcGTX2,3) toxins were detected. | |||||||||||
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