General Information

Event name: US-17-011
Nature of the harmful event:
Seafood toxins
Event directly affected:
Toxicity detected: Yes (Approximate range: Paralytic Shellfish Poisoning: California Mussels (Mytilus californicus), 1812 ug/100 g; Giant Rock Scallop (Crassadoma gigantea) viscera, 507 ug/100 g.)
Associated syndrome: PSP
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 (Paralytic Shellfish Poisoning is somewhat common along entire California coast. The median of all mussels above the 80 ug/100g alert limit through the year (13 elevated samples) was 162, so the 1812 sample is higher than normal.)
Individuals to contact: ZUBKOUSKY-WHITE, Vanessa

Location & Date

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Location: Latitude: , Longitude:
General location information: Central and Northern California,
HAB Area code(s): US-21
Additional location information: 1/11 for Monterey Bay rock scallops, 1st event 8/30/17 (2nd) 1/11 for Monterey mussels (1st) 10/16 for Sonoma County mussels (2nd) Final 3/7/17 for MB rock scallops (1st) 10/10 for MB rock scallops (2nd) 6/26 for MC mussels 1st 10/22 for SC mussels (2nd)
Bloom event dates (yyyy/mm/dd):
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information:


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 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 07:48 on 23 Apr 2018