General Information

Event name: ZAF-07-004
Country: SOUTH AFRICA
Nature of the harmful event:
High Phyto concentration , Seafood toxins
Event directly affected:
Shellfish , Humans
Toxicity detected: Yes (Approximate range: 4000 g STX eq 100g shellfish)
Associated syndrome: PSP
Unexplained toxicity: No
Species implicated in toxin transmission (transvector): mussels
Report the outcome of a monitoring programme: No
Event occurred before in this location:
Individuals to contact: MANSFIELD, Lisa , SCHWEIBOLD Laura

Location & Date

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Location: Latitude: -32.733056, Longitude: 18.033056
General location information: St Helena Bay, Occidental Cape
HAB Area code(s): ZAF-01
Additional location information:
Bloom event dates (yyyy/mm/dd): Event Date:2017-02-01
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information:

Microalgae

Causative organism known: Yes
Causative Species/Genus: Alexandrium catenella (5x10^5 cells/L)
Co-Ocurring Species/Genus:
Chlorophyll concentration, if known: µg/l
Additional bloom information:
Event-related bibliography: Pitcher, G.C., Bernard, S., Ntuli, J., 2008. Contrasting bays and red tides in the southern Benguela upwelling system. Oceanography 21, 8291.

Environmental Conditions

Weather: Turbidity (NTU): Wind direction:
Stratified water: Oxygen content (nL/L): Wind velocity:
Temperature (°C): Oxygen saturation %: Current Direction:
Sechhi disk (m): Salinity: Current Velocity:
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:

Toxin Assay Information

Species containing the toxin Toxin type Toxin details Max. concentration Assay type
Kit used: Type of kit used:
Additional information:
Economic losses:
Management decision: Harvesting closures
Additional harmful effect information:
Created at 10:22 on 6 Dec 2019
Updated at 01:05 on 6 Dec 2019
IOC/UNESCO ISSHA
IOC/UNESCO ICES PICES