General Information

Event name: US-98-026
Nature of the harmful event:
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: No
Event occurred before in this location: No
Individuals to contact: OSTASZ, Michael J.

Location & Date

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Location: Latitude: 56.050000, Longitude: -133.550000
General location information: Kosciusko Island., Alaska.
HAB Area code(s): US-25
Additional location information: Extends NE-SW 26 miles, separated from Prince of Wales Island by El Capitan Passage.
Bloom event dates (yyyy/mm/dd): Event Date:1998-08-30
Start: 1998-08-30,
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information:


Causative organism known: Yes
Causative Species/Genus: Alexandrium sp. ( 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:
Growth Comments
Additional Environmental information: Small bay - open on two ends.

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: Lot was rejected for sales of oysters only.
Additional harmful effect information: 57, 61, 71 &116 g/100 g seen in lot samples with oysters. Although concurrent Littlenecks were satisfactory at 57, 73, 47 and 43 g/100 g.