General Information

Event name: US-91-020
Nature of the harmful event:
Seafood toxins
Event directly affected:
Toxicity detected: No
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: OSTASZ, Michael J.

Location & Date

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Location: Latitude: 57.216667, Longitude: -153.238889
General location information: Sheep Island., Alaska.
HAB Area code(s): US-26
Additional location information: Sheep Island located on the east side of Kodiak Island inmediately east of the village of Old Harbor, Alaska. Island 0.4 mile long in Sitkalidak Strait, at mouth of Midway Bay, between Sitkalidak I., S.E. Coast of Kodiak Island.
Bloom event dates (yyyy/mm/dd): Event Date:1991-06-11
Start: 1991-06-11,
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information:


Causative organism known: No
Causative Species/Genus:
Co-Ocurring Species/Genus:
Chlorophyll concentration, if known: µg/l
Additional bloom information: Suspect PSP.
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
Additional Environmental information:

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: Samples of butter clams and others to be analyzed for PSP.
Additional harmful effect information: