General Information

Event name: US-16-003
Nature of the harmful event:
Seafood toxins
Event directly affected:
Toxicity detected: Yes
Associated syndrome: ASP
Unexplained toxicity: No
Species implicated in toxin transmission (transvector): Razor clams, Dungeness crab
Report the outcome of a monitoring programme: Yes (ODA shellfish and crab monitoring)
Event occurred before in this location: Yes (has been ongoing for the last two years)
Individuals to contact: Manderson, Alex

Location & Date

[View larger map]
Location: Latitude: , Longitude:
General location information: , Oregon
HAB Area code(s): US-22
Additional location information: Domoic acid detected throughout Oregon coastline during 2016 in crab and razor clams.
Bloom event dates (yyyy/mm/dd): Start: 2016-01-01, End: 2016-12-31
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information:


Causative organism known: Yes
Causative Species/Genus: Pseudo-nitzschia spp. ( 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 Clam Domoic Acid 360ppm LC
Kit used: Type of kit used:
Additional information: HPLC
Economic losses: Hard to quantify but major. Commercial dungeness crab industry had a delayed start then a closure for domoic acid in crab sampled during an open fishery. Major econmic loss and disruption to the industry and market. Loss of market confidence.
Management decision: Razor clamming closed along entire coast for much of the year. Delay and then closure of part of dungeness crab fishery.
Additional harmful effect information:
Created at 09:53 on 27 Feb 2017
Updated at 04:07 on 26 Jun 2020