General Information

Event name: US-20-013
Nature of the harmful event:
Seafood toxins
Event directly affected:
Toxicity detected: Yes (Approximate range: 0-120ppm)
Associated syndrome: ASP
Unexplained toxicity: No
Species implicated in toxin transmission (transvector):
Report the outcome of a monitoring programme: Yes (Annual routine public health monitoring by Oregon Dept Agriculture)
Event occurred before in this location: Yes
Individuals to contact: Manderson, Alex

Location & Date

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Location: Latitude: , Longitude:
General location information: Coastline, Oregon
HAB Area code(s): US-22
Additional location information:
Bloom event dates (yyyy/mm/dd): Start: 2020-01-01, End: 2020-12-31
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information: Multi-year bloom


Causative organism known: Yes
Causative Species/Genus: Pseudo-nitzschia spp. (300,000 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: 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
Razor clams Domoic Acid 120ppm Other
Kit used: No Type of kit used:
Additional information:
Economic losses: Delay to dungeness crab fishery. Uncertainty and loss of market value of whole crab during domoic testing rounds. Tourism loss from closure of razor clam harvesting.
Management decision: Closure of razor clamming for commercial and recreational harvest. Enhanced monitoring of dungeness crab fishery.
Additional harmful effect information:
Created at 12:04 on 20 Apr 2021