| Event name: | ZAF-66-001 | |
| Country: | SOUTH AFRICA | |
|
Nature of the harmful event: |
Water Discoloration , High Phyto concentration , Seafood toxins , Mass mortalities | |
|
Event directly affected: |
Shellfish | |
| Toxicity detected: | Yes (Approximate range: Yes, but no specific range given) | |
| Associated syndrome: | OTHER | |
| Unexplained toxicity: | No | |
| Species implicated in toxin transmission (transvector): | White mussels, Donax serra and Black mussels, Choromytilus meridionalis | |
| Report the outcome of a monitoring programme: | No | |
| Event occurred before in this location: | No | |
| Individuals to contact: | MANSFIELD, Lisa | |
| Location: | Latitude: -32.312778, Longitude: 18.338056 | |
| General location information: |
Elands Bay, Western Cape HAB Area code(s): ZAF-01 |
|
| Additional location information: | extends from a few miles south of St. Helena Bay to at least 50 miles northwards. | |
| Bloom event dates (yyyy/mm/dd): |
Event Date:1966-12-21 Start: 1966-12-21, End: 1967-01-05 |
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| Quarantine levels dates (yyyy/mm/dd): | ||
| Additional date-related information: | ||
| Causative organism known: | Yes | |
| Causative Species/Genus: |
Gonyaulax grindleyi Reinecke 1967
(6667500 cells/L)
Now know as Protoceratium reticulatum |
|
| Co-Ocurring Species/Genus: |
Eutreptiella sp.
(835000 cells/L)
|
|
| Chlorophyll concentration, if known: | µg/l | |
| Additional bloom information: | Diatoms were co-occuring species as well as non-toxic Gyrodinium obtusum | |
| Event-related bibliography: | GRINDLEY, J.R. and E.A. Nel 1970 - Red water and mussel poisoning at Elands Bay, December 1966. Fish. Bull. S. Afr 06: 36-54 | |
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| Nutrient information: | ||||||||||||||||||||||||||
| Temperature Range During Event: | Max: 15.07 °C, Min: 12.79 °C | |||||||||||||||||||||||||
| Salinity Range During Event: | ||||||||||||||||||||||||||
| Bloom location in the water column: |
Surface Subsurface |
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| Growth: | Advected | |||||||||||||||||||||||||
| Growth Comments | ||||||||||||||||||||||||||
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| Kit used: | Type of kit used: | ||||||
| Additional information: | |||||||
| Economic losses: | |||||||
| Management decision: | |||||||
| Additional harmful effect information: | This bloom resulted in the death of hundreds of thousands of White mussels (Donax serra) and large numbers of Black mussels (Chloromytilus meridionalis) and many other marine invertebrates. | ||||||
