| Event name: | NZ-89-001 | |
| Country: | NEW ZEALAND | |
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Nature of the harmful event: |
High Phyto concentration , Mass mortalities | |
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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 , RHODES Lesley | |
| Location: | Latitude: -46.982778, Longitude: 168.119444 | |
| General location information: |
Big Glory Bay, South Island HAB Area code(s): NZ-11 |
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| Additional location information: | ||
| Bloom event dates (yyyy/mm/dd): | Start: 1989-01-03, End: 1989-01-11 | |
| Quarantine levels dates (yyyy/mm/dd): | ||
| Additional date-related information: | ||
| Causative organism known: | Yes | |
| Causative Species/Genus: |
Heterosigma akashiwo (Hada) Hada ex Hara et Chihara 1987
(2000000 cells/L)
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| Co-Ocurring Species/Genus: | ||
| Chlorophyll concentration, if known: | µg/l | |
| Additional bloom information: | ||
| Event-related bibliography: | Chang, F. H., Anderson, C., & Boustead, N. C. (1990). First record of a Heterosigma (Raphidophyceae) bloom with associated mortality of cage‐reared salmon in Big Glory Bay, New Zealand. New Zealand journal of marine and freshwater research, 24(4), 461-469. | |
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| 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: | ||||||||||||||||||||||||||
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| Kit used: | Type of kit used: | ||||||
| Additional information: | |||||||
| Economic losses: | 17M NZ$ loss (600 t of salmon) | ||||||
| Management decision: | |||||||
| Additional harmful effect information: | "In our case the pathological changes in gills and intestine were consistent with acute exposure to a necrotising toxin." | ||||||
