General Information

Event name: AU-16-002
Nature of the harmful event:
Seafood toxins
Event directly affected:
Toxicity detected: Yes
Associated syndrome: PSP
Unexplained toxicity:
Species implicated in toxin transmission (transvector):
Report the outcome of a monitoring programme: Yes (NSW Food Authority)
Event occurred before in this location:
Individuals to contact: Hallegraeff Gustaaf

Location & Date

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Location: Latitude: -37.081111, Longitude: 149.919722
General location information: Twofold Bay, NSW
HAB Area code(s): AU-18
Additional location information:
Bloom event dates (yyyy/mm/dd): Start: 2016-10-15, End: 2016-11-23
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information:


Causative organism known: Yes
Causative Species/Genus: Alexandrium catenella (Whedon et Kofoid) Balech 1985 ( cells/L)
real name: Alexandrium pacificum
Co-Ocurring Species/Genus:
Chlorophyll concentration, if known: µg/l
Additional bloom information: Shauna Murray, molecular sequencing
Event-related bibliography: Hallegraeff 2015 Aquaculturists' guide to Harmful Australian Marine Microalgae

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
Alexandrium pacificum Saxitoxins STX eq 7.2 mg/kg LC-FD
Kit used: No Type of kit used:
Additional information:
Economic losses:
Management decision: Shellfish farm closures
Additional harmful effect information:
Created at 05:49 on 9 Feb 2017
Updated at 08:14 on 10 Feb 2017