| Event name: | ZAF-97-003 | |
| Country: | SOUTH AFRICA | |
|
Nature of the harmful event: |
Seafood toxins | |
|
Event directly affected: |
Humans | |
| Toxicity detected: | Yes (Approximate range: >80µg/ 100g mussel tissue) | |
| Associated syndrome: | PSP | |
| Unexplained toxicity: | No | |
| Species implicated in toxin transmission (transvector): | White mussels, Donax serra and black mussels, Mytilus galloprovincialis | |
| Report the outcome of a monitoring programme: | No | |
| Event occurred before in this location: | Yes (1958) | |
| Individuals to contact: | MANSFIELD, Lisa | |
| Location: | Latitude: -33.062500, Longitude: 17.934722 | |
| General location information: |
West Coast, West Coast HAB Area code(s): ZAF-01 |
|
| Additional location information: | General West Coast area | |
| Bloom event dates (yyyy/mm/dd): |
Event Date:1997-01-01 Start: 1997-01-01, End: 1997-08-31 |
|
| Quarantine levels dates (yyyy/mm/dd): | First detection: 1997-03-01, End: 1997-08-01 | |
| Additional date-related information: | ||
| Causative organism known: | Yes | |
| Causative Species/Genus: |
Alexandrium catenella
( cells/L)
cells/L not given in this record |
|
| Co-Ocurring Species/Genus: |
Ceratium furca
(20000000 cells/L)
by April 1997 - dominant species Dinophysis acuminata ( cells/L) cells/L not given in this record |
|
| Chlorophyll concentration, if known: | µg/l | |
| Additional bloom information: | Highest concentration of 2600µg toxin/ 100g mussel tissue recorded during May. | |
| Event-related bibliography: | PITCHER, G.C. and A. C. COCKROFT 1998 - Low oxygen, rock lobster strandings and PSP. In Harmful Algae News, ed, T. Wyatt, Intergovernmental Oceanographic Commission of UNESCO, 17: 1-3 | |
|
||||||||||||||||||||||||||
| Nutrient information: | ||||||||||||||||||||||||||
| Temperature Range During Event: | Max: °C, Min: °C | |||||||||||||||||||||||||
| Salinity Range During Event: | ||||||||||||||||||||||||||
| Bloom location in the water column: | ||||||||||||||||||||||||||
| Growth: | ||||||||||||||||||||||||||
| Growth Comments | ||||||||||||||||||||||||||
| Additional Environmental information: | ||||||||||||||||||||||||||
|
|||||||
| Kit used: | Type of kit used: | ||||||
| Additional information: | Shellfish toxicity but no direct reference to the tests carried out. | ||||||
| Economic losses: | 2000 tons of of west coast rock lobster due to the low oxygen event from the Ceratium furca bloom | ||||||
| Management decision: | From March 1997 to August 1997 a ban was placed on the collection of wild shellfish | ||||||
| Additional harmful effect information: | On 30 April 1997 a woman died after eating white mussels (Donax serra), 9 May another woman died after eating black mussels (Mytilus galloprovincialis), on 13 May four Taiwanese sailors were admitted to hospital after eating both raw and cooked mussels. | ||||||
