General Information

Event name: US-18-022
Country: UNITED STATES
Nature of the harmful event:
Seafood toxins
Event directly affected:
Shellfish
Toxicity detected: Yes (Approximate range: 110-4760ug/100g)
Associated syndrome: PSP
Unexplained toxicity: No
Species implicated in toxin transmission (transvector): California mussels
Report the outcome of a monitoring programme: Yes (California Department of Public Health Marine Biotoxin Monitoring Program)
Event occurred before in this location: Yes (Paralytic Shellfish Poisoning is somewhat common along entire California coast. The median of all mussels above the 80ug/100g alert limit through the year (43 elevated mussel samples) was 341, so the 4760 sample is higher than normal.)
Individuals to contact: ZUBKOUSKY-WHITE, Vanessa

Location & Date

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Location: Latitude: , Longitude:
General location information: Northern California,
HAB Area code(s): US-21
Additional location information: Eventually covered ICES Area codes 19, 20, and 21; started in 20/21, went north to 21, then south to 19.
Bloom event dates (yyyy/mm/dd):
Quarantine levels dates (yyyy/mm/dd): First detection: 2018-01-08, End: 2018-08-07
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
California mussels Saxitoxins 4760ug/100g Bioassay-Mouse
Rock scallop Saxitoxins 946ug/100g Bioassay-Mouse
Gaper clam Saxitoxins 588ug/100g Bioassay-Mouse
Washington clam Saxitoxins 110ug/100g Bioassay-Mouse
Kit used: No Type of kit used:
Additional information:
Economic losses:
Management decision:
Additional harmful effect information:
Created at 02:16 on 29 Mar 2019
IOC/UNESCO ISSHA
IOC/UNESCO ICES PICES