General Information

Event name: AU-93-001
Nature of the harmful event:
Seafood toxins
Event directly affected:
Toxicity detected: Yes (Approximate range: 17000 g/100g)
Associated syndrome: PSP
Unexplained toxicity:
Species implicated in toxin transmission (transvector):
Report the outcome of a monitoring programme: Yes (Tasmanian Shellfish Quality Assurance Program)
Event occurred before in this location: Yes (1986)
Individuals to contact: Hallegraeff Gustaaf

Location & Date

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Location: Latitude: -43.026389, Longitude: 147.038333
General location information: Huon River, Tasmania
HAB Area code(s): AU-02
Additional location information:
Bloom event dates (yyyy/mm/dd): Start: 1993-03-16, End: 1993-07-15
Quarantine levels dates (yyyy/mm/dd): First detection: 1993-03-16, End: 1993-07-15
Additional date-related information:


Causative organism known: Yes
Causative Species/Genus: Gymnodinium catenatum Graham 1943 (1 000 000 cells/L)
Co-Ocurring Species/Genus:
Chlorophyll concentration, if known: µg/l
Additional bloom information:
Event-related bibliography: G Hallegraeff et al. 1995 J. Plankton Research 17: 1163-1176

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 Comments
Additional Environmental information:

Toxin Assay Information

Species containing the toxin Toxin type Toxin details Max. concentration Assay type
Gymnodinium catenatum Saxitoxins C1 17000 g/100g STX eq Bioassay-Mouse
Kit used: No Type of kit used:
Additional information:
Economic losses:
Management decision: Shellfish farms closures, ultimate demise of long-line mussel industry in this area
Additional harmful effect information: salmon farms gill necrosis
Created at 05:08 on 30 Jan 2017
Updated at 07:37 on 10 Feb 2017