General Information

Event name: AU-09-001
Nature of the harmful event:
Water Discoloration , High Phyto concentration
Event directly affected:
Aquaculture Fish
Toxicity detected: No
Associated syndrome:
Unexplained toxicity:
Species implicated in toxin transmission (transvector):
Report the outcome of a monitoring programme: No
Event occurred before in this location: No
Individuals to contact: Hallegraeff Gustaaf

Location & Date

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Location: Latitude: -12.467778, Longitude: 130.801944
General location information: Darwin, Northern Territory
HAB Area code(s): AU-09
Additional location information: aquaculture ponds
Bloom event dates (yyyy/mm/dd): Start: 2009-05-15, End: 2009-06-15
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information:


Causative organism known: Yes
Causative Species/Genus: Prymnesium parvum Carter 1937 ( cells/L)
Co-Ocurring Species/Genus:
Chlorophyll concentration, if known: µg/l
Additional bloom information:
Event-related bibliography: A.Seger et al. 2015. J Mar Sc Engineering 3, 154-174

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
Kit used: Type of kit used:
Additional information: prymnesin confirmed from cultures
Economic losses: 90 000 AUD loss
Management decision: barramundi fishfarm operation ultimately closed
Additional harmful effect information:
Created at 04:14 on 31 Jan 2017
Updated at 04:25 on 26 Sep 2017