General Information

Event name: NL-95-001
Nature of the harmful event:
Seafood toxins
Event directly affected:
Toxicity detected: Yes (Approximate range: Rat bioassay positive)
Associated syndrome: DSP
Unexplained toxicity: No
Species implicated in toxin transmission (transvector): mussel
Report the outcome of a monitoring programme: Yes (Monitoring Shellfish Quality Netherlands)
Event occurred before in this location: Yes (1992 and earlier)
Individuals to contact: POELMAN, Marnix

Location & Date

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Location: Latitude: 53.318056, Longitude: 5.184167
General location information: Oosterom / West Meep, Waddensea
HAB Area code(s): NL-01
Additional location information:
Bloom event dates (yyyy/mm/dd): Event Date:1995-10-18
Start: 1995-09-04, End: 1995-10-31
Quarantine levels dates (yyyy/mm/dd): First detection: 1995-10-18, End: 1995-11-02
Additional date-related information:


Causative organism known: No
Causative Species/Genus: Dinophysis acuminata (100 cells/L)
Co-Ocurring Species/Genus:
Chlorophyll concentration, if known: µg/l
Additional bloom information:
Event-related bibliography:

Environmental Conditions

Weather: Turbidity (NTU): Wind direction:
Stratified water: No Oxygen content (nL/L): Wind velocity:
Temperature (°C): 16 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: Whole column
Growth Comments
Additional Environmental information:

Toxin Assay Information

Species containing the toxin Toxin type Toxin details Max. concentration Assay type
DSP Okadaic Acid Positive Bioassay-Rat
Kit used: Type of kit used:
Additional information: Positive animal assay, no analytical analysis performed
Economic losses: Closure for two weeks.
Management decision:
Additional harmful effect information:
Created at 12:20 on 31 Mar 2017
Updated at 01:52 on 22 Feb 2018