Harmful Algal Information System: Event US-19-030

General Information

Event name:	US-19-030
Country:	UNITED STATES
Nature of the harmful event:	Seafood toxins
Event directly affected:	Shellfish
Toxicity detected:	Yes (Approximate range: 106ug/100g tissue)
Associated syndrome:	DSP
Unexplained toxicity:	No
Species implicated in toxin transmission (transvector):	Blue mussels, manila clams, rock scallops
Report the outcome of a monitoring programme:	Yes (Marine Biotoxin Program at the Washington State Department of Health, Office of Environmental and Health and Safety.)
Event occurred before in this location:	Yes
Individuals to contact:	BORCHERT, Jerry

Location & Date

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Location:	Latitude: , Longitude:
General location information:	Puget Sound, Washington State HAB Area code(s): US-24
Additional location information:	Strait of Juan de Fuca 5/31-9/3 South Puget Sound 11/22-12/31 North Puget Sound 1/10-1/24, 8/1-8/20 Central Puget Sound 8/7-9/20
Bloom event dates (yyyy/mm/dd):
Quarantine levels dates (yyyy/mm/dd):	First detection: 2019-01-10, End: 2019-12-31
Additional date-related information:

Microalgae

Causative organism known:	Yes
Causative Species/Genus:	Dinophysis 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:

Growth Comments

Additional Environmental information:

Toxin Assay Information

Species containing the toxin	Toxin type	Toxin details	Max. concentration	Assay type
Manila clams	Okadaic Acid		16ug/100g	LC-MS
Rock scallops	Okadaic Acid		46ug/100g	LC-MS
Blue mussels	Okadaic Acid		106ug/100g	LC-MS

Kit used:

Type of kit used:

Additional information:

Economic losses:

Recreational and commercial shellfish harvest seasons were interrupted, causing an economic loss to the Puget Sound, Olympic Peninsula and Strait of Juan de Fuca Washington communities.

Management decision:

WADOH closed shellfish harvesting at impacted areas to protect public health.

Additional harmful effect information:

Created at 10:04 on 8 Apr 2020
Updated at 10:04 on 8 Apr 2020