General Information

Event name: US-96-011
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 (PSP commonly occurs in mussels and other bivalve molluscs throughout western Washington inland waters (Puget sound, Admiralty Inlet, San Juan Islands, etc.) during the summer.)
Individuals to contact: COX, Frank

Location & Date

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Location: Latitude: , Longitude:
General location information: Orcas Island, Maury Island, Marrowstone Islan, Washington.
HAB Area code(s): US-24
Additional location information: East and West sounds, Orcas Island; Quartermaster Harbor, Maury Island; Mystery Bay, Marrowstone Island; Discovery Bay; Sequim Bay.
Bloom event dates (yyyy/mm/dd): Start: 1996-07-01, End: 1996-10-22
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information: Various times from 1/07/96 to 22/10/96.


Causative organism known: No
Causative Species/Genus: Alexandrium 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:
In situ
Growth Comments Probably 'in situ' growth.
Additional Environmental information: No environmental 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: There was some product recall.
Additional harmful effect information: Closure of blue mussel (Mytilus edulis), and Pacific oyster (Crassostrea gigas) harvest.