General Information

Event name: US-89-011
Nature of the harmful event:
Seafood toxins
Event directly affected:
Toxicity detected: Yes
Associated syndrome: PSP
Unexplained toxicity: No
Species implicated in toxin transmission (transvector):
Report the outcome of a monitoring programme: Yes
Event occurred before in this location: Yes (1968, 1976, 1980, 1981, 1987.)
Individuals to contact: ROSS, Maria R.

Location & Date

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Location: Latitude: , Longitude:
General location information: Sonoma County., California.
HAB Area code(s): US-21
Additional location information: Areas affected: Schoolhouse Beach, Bodega Bay, South Jetty, Bodega Head, Mussel Point, Salt Point State Park, Duncan Point/Wrights' Beach, Sea Ranch/Black Point.
Bloom event dates (yyyy/mm/dd):
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information: End of January-beginning of February and August-December


Causative organism known: Yes
Causative Species/Genus: Protogonyaulax catenella ( 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: No Oxygen content (nL/L): Wind velocity:
Temperature (°C): Oxygen saturation %: Current Direction:
Sechhi disk (m): Salinity: Current Velocity: 0
Nutrient information:
Temperature Range During Event: Max: °C, Min: °C
Salinity Range During Event:
Bloom location in the water column:
Growth Comments Probably both conditions contributed to the bloom but no firm available data exists
Additional Environmental information: No data available

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: Quarantine imposed on sport harvesting of mussels during Jan. Feb. 1989. Public PSP levels during January and February. From August through October PSP levels increased astronomically to 5500g/100g wild bay mussel, 1900 g/100g wild sea mussel, 2200 g/1
Additional harmful effect information: Increased Paralytic Sehllfish Toxin levels in natural sea mussels and abalone jingle. High detectable concentrations but below alert lebels during January and February. From August through October PSP levels increased astronomically to 5500 g/100gr wild