General Information

Event name: US-93-016
Nature of the harmful event:
Seafood toxins
Event directly affected:
Toxicity detected: Yes (Approximate range: 1,824 g STXeq /100 g.)
Associated syndrome: PSP
Unexplained toxicity: No
Species implicated in toxin transmission (transvector): Saxidomus giganteus (butter clams).
Report the outcome of a monitoring programme: Yes
Event occurred before in this location: Yes (Area has had PSP cases in the past. Mussels have been implicated in past episodes.)
Individuals to contact: OSTASZ, Michael J.

Location & Date

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Location: Latitude: 57.783333, Longitude: -152.400000
General location information: Near Island, Kodiak., Alaska.
HAB Area code(s): US-26
Additional location information: 1.5 mile long in St. Paul Harbor, 0.5 mile S. of Kodiak Island.
Bloom event dates (yyyy/mm/dd): Event Date:1993-06-15
Start: 1993-06-15,
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information:


Causative organism known: No
Causative Species/Genus: Alexandrium spp. ( cells/L)
Co-Ocurring Species/Genus:
Chlorophyll concentration, if known: µg/l
Additional bloom information: Causative species not confirmed but suspected to be Alexandrium.
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 North end of Kodiak Island - small island within shipping/boat channel.
Additional Environmental information: Small island near Kodiak, Alaska.

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: Press release warning.
Additional harmful effect information: PSP levels: 1824 g/100 gms. 30 composited whole animals.