Harmful Algal Information System: Event US-01-001

General Information

Event name:	US-01-001
Country:	UNITED STATES
Nature of the harmful event:	Seafood toxins
Event directly affected:	Humans
Toxicity detected:	No
Associated syndrome:	PSP
Unexplained toxicity:	No
Species implicated in toxin transmission (transvector):	Butterclams.
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: , Longitude:
General location information:	Larsen Bay., Alaska. HAB Area code(s): US-26
Additional location information:
Bloom event dates (yyyy/mm/dd):	Event Date:2001-01-09
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information:	1/8/01 clams were dug.

Microalgae

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:

Growth Comments

Additional Environmental information:

Toxin Assay Information

Species containing the toxin	Toxin type	Toxin details	Max. concentration	Assay type
Saxidomus	Saxitoxins	STX eq	239, 269, 2	Bioassay-Mouse

Kit used: No

Type of kit used:

Additional information:

Economic losses:

Management decision:

Press release warning about eating clams from this beach by the Alaska Department of Environmental Conservation.

Additional harmful effect information:

Tingling around mouth occurred within a few minutes of consumption. Nausea, vomiting, and dizziness developed about 20 minutes after ingestion of clam. Emesis was obtained but too low a volume for a psp test. The test result for amnesic shellfish pois