General Information

Event name: US-15-017
Nature of the harmful event:
Seafood toxins
Event directly affected:
Toxicity detected: Yes (Approximate range: Maximum levels of PSP toxin: 102-506 g. Maximum levels of DSP toxin: 16-43 g.)
Associated syndrome: DSP , PSP
Unexplained toxicity: No
Species implicated in toxin transmission (transvector): PSP toxin: blue mussles, butter clams, geoduck clams, littleneck clams, manila clams, pacific oysters. DSP toxin: blue mussels.
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 (PSP closures have occurred through the Strait of Juan de Fuca previously. The first DSP in the Strait of Juan de Fuca was in 2011, in Sequim Bay.)
Individuals to contact: BORCHERT, Jerry , KUKLOK, Audrey

Location & Date

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Location: Latitude: , Longitude:
General location information: Washington State, Strait of Juan de Fuca and Olympic Peninsula, Pacific Northwest
HAB Area code(s): US-24
Additional location information: The PSP closure was 4/2/15 to 10/16/15. The DSP closure was 6/12/15 to 12/4/15.
Bloom event dates (yyyy/mm/dd):
Quarantine levels dates (yyyy/mm/dd): First detection: 2015-04-02, End: 2015-12-04
Additional date-related information:


Causative organism known: Yes
Causative Species/Genus: Alexandrium catenella ( cells/L)
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 Comments
Additional Environmental information:

Toxin Assay Information

Species containing the toxin Toxin type Toxin details Max. concentration Assay type
Blue Mussels Saxitoxins 506g Bioassay-Mouse
Butter Clams Saxitoxins 424g Bioassay-Mouse
Geoduck clams Saxitoxins 126g Bioassay-Mouse
Littleneck clams Saxitoxins 422g Bioassay-Mouse
manila clams Saxitoxins 356g Bioassay-Mouse
pacific oysters Saxitoxins 203 g Bioassay-Mouse
Kit used: No Type of kit used:
Additional information:
Economic losses: Recreational and commercial shellfish harvest seasons were interrupted, causing an economic loss to the Olympic Peninsual Washington communities
Management decision: DOH closed shellfish harvesting at impacted areas to protect public health
Additional harmful effect information:
Created at 08:53 on 7 Feb 2017