General Information

Event name: US-20-006
Country: UNITED STATES
Nature of the harmful event:
Seafood toxins
Event directly affected:
Shellfish
Toxicity detected: Yes (Approximate range: 34-106g)
Associated syndrome: DSP
Unexplained toxicity: No
Species implicated in toxin transmission (transvector): Blue mussels. rock scallops during study period.
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
HAB Area code(s): US-24
Additional location information:
Bloom event dates (yyyy/mm/dd):
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information: Closure 11/22/19-6/26/20, 11/24/20-2021

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
Blue mussels Okadaic Acid 106g/100g LC-MS
Rock scallops Okadaic Acid 34g/100g LC-MS
Kit used: Type of kit used:
Additional information: Rock scallops were study species for DSP project, not regular surveillance.
Economic losses: Recreational and commercial shellfish harvest seasons were interrupted, causing an economic loss to the South Puget Sound Washington communities
Management decision: WADOH closed shellfish harvesting at impacted areas to protect public health.
Additional harmful effect information:
Created at 10:57 on 19 Apr 2021
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