General Information

Event name: NZ-87-001
Nature of the harmful event:
Water Discoloration
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: RHODES Lesley

Location & Date

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Location: Latitude: -43.808333, Longitude: 172.934167
General location information: Akaroa, South Island
HAB Area code(s): NZ-10
Additional location information:
Bloom event dates (yyyy/mm/dd): Event Date:1987-03-15
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information:


Causative organism known: Yes
Causative Species/Genus: Gyrodinium aureolum ( cells/L)
Co-Ocurring Species/Genus:
Chlorophyll concentration, if known: µg/l
Additional bloom information:
Event-related bibliography: Boustead, N. C.; Chang, F. H.; McAUum, H. J. F. 1987: Plankton blooms and salmon farming. Aquaculture information leaflet 1: 2-3.

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:
Economic losses: A small number of sea-caged quinnat salmon died
Management decision:
Additional harmful effect information:
Created at 12:02 on 21 Feb 2018
Updated at 01:49 on 13 Mar 2018