| Event name: | ZAF-92-001 | |
| Country: | SOUTH AFRICA | |
|
Nature of the harmful event: |
Water Discoloration , Seafood toxins | |
|
Event directly affected: |
Shellfish , Humans | |
| Toxicity detected: | Yes (Approximate range: <0.1 - >5.1µg OA per g hepatopancreas) | |
| Associated syndrome: | DSP | |
| Unexplained toxicity: | No | |
| Species implicated in toxin transmission (transvector): | mussels | |
| Report the outcome of a monitoring programme: | No | |
| Event occurred before in this location: | Yes (The previous year, 1991) | |
| Individuals to contact: | MANSFIELD, Lisa | |
| Location: | Latitude: -32.543889, Longitude: 18.178056 | |
| General location information: |
St Helena Bay, West Coast HAB Area code(s): ZAF-01 |
|
| Additional location information: | ||
| Bloom event dates (yyyy/mm/dd): |
Event Date:1992-02-24 Start: 1992-02-01, End: 1992-04-30 |
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| Quarantine levels dates (yyyy/mm/dd): | First detection: 1992-02-24, | |
| Additional date-related information: | ||
| Causative organism known: | Yes | |
| Causative Species/Genus: |
Dinophysis acuminata
(250000 cells/L)
|
|
| Co-Ocurring Species/Genus: |
Ceratium furca
(>250000 cells/L)
much higher concentrations than D. acuminata |
|
| Chlorophyll concentration, if known: | µg/l | |
| Additional bloom information: | ||
| Event-related bibliography: | PITCHER, G.C., D.A. HORSTMAN, D. CALDER, J.H. DE BRUYN and B.J. POST 1993 – The first record of diarrhetic shellfish poisoning on the South African coast. S. Afr. J Sci. 89: 512 -514 | |
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| 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: | ||||||||||||||||||||||||||
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| Kit used: Yes | Type of kit used: Quick Test Kit | |||||||||||
| Additional information: | continued toxicity at several sights into the winter months | |||||||||||
| Economic losses: | ||||||||||||
| Management decision: | Public were advised against eating mussels in these areas | |||||||||||
| Additional harmful effect information: | ||||||||||||
