General Information

Event name: US-16-020
Nature of the harmful event:
Seafood toxins
Event directly affected:
Toxicity detected: Yes (Approximate range: Domoic acid- California Mussels (mytilus californicus): 70 ppm; Razor Clams: 380 ppm; Rock Crab Viscera: 160 ppm; Dungeness Crab viscera: 93 ppm; Pelagic crab cephalothorax (Pleuroncodes planipes): 490 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 (ASP events are common in Monterey Bay, but are less frequent north of the Golden Gate (San Francisco). So the detection of toxin along the entire north coast is noteworthy.)
Individuals to contact: ZUBKOUSKY-WHITE, Vanessa

Location & Date

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Location: Latitude: , Longitude:
General location information: Central and Northern California, ca
HAB Area code(s): US-21
Additional location information: monterey bay and entire northern coastline
Bloom event dates (yyyy/mm/dd): Start: 2016-06-15, End: 2016-08-08
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information:


Causative organism known: Yes
Causative Species/Genus: Pseudo-nitzschia seriata ( 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
Kit used: No Type of kit used:
Additional information:
Economic losses:
Management decision:
Additional harmful effect information:
Created at 05:41 on 21 Mar 2017