Harmful Algal Information System: Event US-20-013

General Information

Event name:	US-20-013
Country:	UNITED STATES
Nature of the harmful event:	Seafood toxins
Event directly affected:	Shellfish
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

Microalgae

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:

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