General Information

Event name: US-21-029
Country: UNITED STATES
Nature of the harmful event:
High Phyto concentration , Seafood toxins
Event directly affected:
Shellfish
Toxicity detected: Yes (Approximate range: 8.4 - 48 ppm)
Associated syndrome: ASP
Unexplained toxicity: No
Species implicated in toxin transmission (transvector):
Report the outcome of a monitoring programme: Yes (California Department of Public Health - Marine Biotoxin Monitoring Program)
Event occurred before in this location: Yes
Individuals to contact: ZUBKOUSKY-WHITE, Vanessa

Location & Date

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Location: Latitude: , Longitude:
General location information: Del Norte County, Humboldt, Sonoma County, Monterey,
HAB Area code(s): US-21
Additional location information:
Bloom event dates (yyyy/mm/dd):
Quarantine levels dates (yyyy/mm/dd): First detection: 2021-02-10, End: 2021-12-04
Additional date-related information:

Microalgae

Causative organism known: No
Causative Species/Genus: Pseudo-nitzschia 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
Razor Clams Domoic Acid 48 ppm LC
Dungeness Crab viscera Domoic Acid 54 ppm LC
California Mussels Domoic Acid 8.4 ppm LC
Kit used: Type of kit used:
Additional information:
Economic losses:
Management decision:
Additional harmful effect information:
Created at 06:47 on 13 Jul 2022
IOC/UNESCO ISSHA
IOC/UNESCO ICES PICES