General Information

Event name: US-22-014
Country: UNITED STATES
Nature of the harmful event:
High Phyto concentration , Seafood toxins
Event directly affected:
Shellfish , Humans
Toxicity detected: Yes (Approximate range: 23-34 g/100g tissue)
Associated syndrome: DSP
Unexplained toxicity: No
Species implicated in toxin transmission (transvector):
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 , BARRY, Tracie

Location & Date

[View larger map]
Location: Latitude: , Longitude:
General location information: Washington State, Central Puget Sound,
HAB Area code(s): US-24
Additional location information: DSP above action levels was found in Liberty in blue mussels and manila clams in mid-october.
Bloom event dates (yyyy/mm/dd):
Quarantine levels dates (yyyy/mm/dd):
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
Blue Mussels Okadaic Acid 34 g/100g tissue LC-MS
Manila Clams Okadaic Acid 23 g/100g LC-MS
Kit used: No Type of kit used:
Additional information:
Economic losses: Recreational, commercial and tribal ceremonial shellfish harvests were interrupted, causing cultural and economic loss to Central Puget Sound Washington communities
Management decision: WADOH closed shellfish harvesting at impacted areas to protect public health.
Additional harmful effect information:
Created at 06:52 on 5 Apr 2023
IOC/UNESCO ISSHA
IOC/UNESCO ICES PICES