General Information

Event name: US-92-024
Country: UNITED STATES
Nature of the harmful event:
Seafood toxins
Event directly affected:
Humans
Toxicity detected: Yes (Approximate range: 69 g STXeq / 100 g.)
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 (Not uncommon to have PSP problem year around in Ketchikan, AK area.)
Individuals to contact: OSTASZ, Michael J.

Location & Date

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Location: Latitude: , Longitude:
General location information: Settlers Cove., Alaska.
HAB Area code(s): US-25
Additional location information: in S.E. Alaska north of Ketchikan.
Bloom event dates (yyyy/mm/dd): Event Date:1992-03-22
Start: 1992-03-22,
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information:

Microalgae

Causative organism known: No
Causative Species/Genus: Alexandrium sp. ( cells/L)
Probably
Co-Ocurring Species/Genus:
Chlorophyll concentration, if known: µg/l
Additional bloom information: Probably 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:
Growth Comments In small cove where local residents harvest shellfish.
Additional Environmental information: N/A

Toxin Assay Information

Species containing the toxin Toxin type Toxin details Max. concentration Assay type
Blue mussels Saxitoxins < 34 Bioassay-Mouse
Butter clams & cockles Saxitoxins STX eq 69 Bioassay-Mouse
Kit used: No Type of kit used:
Additional information:
Economic losses:
Management decision: Press release - Warning about PSP and uncertified areas.
Additional harmful effect information: See attached Epidemiological report
IOC/UNESCO ISSHA
IOC/UNESCO ICES PICES