General Information

Event name: US-19-029
Country: UNITED STATES
Nature of the harmful event:
Seafood toxins
Event directly affected:
Shellfish
Toxicity detected: Yes (Approximate range: 6007ug)
Associated syndrome: PSP
Unexplained toxicity: No
Species implicated in toxin transmission (transvector): Blue mussels, manila clams, pacific oysters, geoduck, butter clams
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 6/24-11/26 North Puget Sound 1/1-1/14, 6/2-10/24 Central Puget Sound 7/3-11/4
Bloom event dates (yyyy/mm/dd):
Quarantine levels dates (yyyy/mm/dd): First detection: 2019-06-02, End: 2019-11-26
Additional date-related information:

Microalgae

Causative organism known: Yes
Causative Species/Genus: Alexandrium 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
Butter clam Saxitoxins 199ug Bioassay-Mouse
Pacific oyster Saxitoxins 1557ug Bioassay-Mouse
Geoduck Saxitoxins 446ug Bioassay-Mouse
Blue mussel Saxitoxins 6007ug/100g Bioassay-Mouse
Manila clam Saxitoxins 354ug Bioassay-Mouse
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 Peninsual 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 09:55 on 8 Apr 2020
Updated at 09:55 on 8 Apr 2020
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