General Information

Event name: US-89-015
Nature of the harmful event:
Seafood toxins
Event directly affected:
Toxicity detected: Yes (Approximate range: 930 g STXeq / 100 g meat.)
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: No
Individuals to contact: ROSS, Maria R.

Location & Date

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Location: Latitude: , Longitude:
General location information: Santa Cruz County., California.
HAB Area code(s): US-20
Additional location information: Areas affected: Santa Cruz / San Mateo Co. Line, Natural Bridges.
Bloom event dates (yyyy/mm/dd): Start: 1989-08-01, End: 1989-10-31
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information: August- October


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 Both situations may have contributed to the dinoflagellate population.
Additional Environmental information: No abailable data

Toxin Assay Information

Species containing the toxin Toxin type Toxin details Max. concentration Assay type
Wild sea mussels Saxitoxins 930 Bioassay-Mouse
Kit used: No Type of kit used:
Additional information:
Economic losses:
Management decision: Annual mussel quarantine was in effect and public PSP alert was issued.
Additional harmful effect information: