General Information

Event name: US-93-017
Nature of the harmful event:
Seafood toxins
Event directly affected:
Toxicity detected: Yes (Approximate range: 3,500 g STXeq / 100 g in mussels.)
Associated syndrome: PSP
Unexplained toxicity: No
Species implicated in toxin transmission (transvector): Mussels.
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: 58.576389, Longitude: 134.927778
General location information: North Island., Alaska.
HAB Area code(s): US-25
Additional location information: 4 mile long, off east shore of Favorite Channel, 1.2 miles SW of Yankee Cove and 37 mils NW of Juneau, Alaska.
Bloom event dates (yyyy/mm/dd): Event Date:1993-06-12
Start: 1993-06-12,
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 Small island area.
Additional Environmental information: Inside waters in southeast Alaska.

Toxin Assay Information

Species containing the toxin Toxin type Toxin details Max. concentration Assay type
Whole raw mussels Saxitoxins STX eq 3,500 LC
Cooked mussels Saxitoxins STX eq 1,982 LC
Kit used: No Type of kit used:
Additional information:
Economic losses:
Management decision: Press release warning
Additional harmful effect information: