General Information

Event name: US-17-009
Nature of the harmful event:
Seafood toxins
Event directly affected:
Shellfish , Aquatic Mammals
Toxicity detected: Yes (Approximate range: Domoic acid: California mussels (Mytilus californicus), 130 ppm; Bay mussels (Mytilus trossulus), 350 ppm; California spiny lobster (Panulirus interruptus), 730 ppm; Rock crab, 73 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 (Pseudo-nitzschia blooms and elevated levels of domoic acid are common in the Santa Barbara and northern Channel Island chain region, commonly resulting in shellfish, crab, and lobster harvest closures.)
Individuals to contact: ZUBKOUSKY-WHITE, Vanessa

Location & Date

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Location: Latitude: , Longitude:
General location information: Southern California,
HAB Area code(s): US-19
Additional location information: Regarding dates below: 4/15/17-5/31/17 is for SB mussels; 9/29/17-12/19/17 is for Santa Cruz island spiny lobster
Bloom event dates (yyyy/mm/dd): Start: 2017-04-15, End: 2017-05-31
Quarantine levels dates (yyyy/mm/dd): First detection: 2017-09-29, End: 2017-12-19
Additional date-related information: SB channel rock crab elevated 4/19


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: Type of kit used:
Additional information:
Economic losses:
Management decision:
Additional harmful effect information:
Created at 06:54 on 23 Apr 2018