Harmful Algal Information System: Event US-93-012

General Information

Event name:	US-93-012
Country:	UNITED STATES
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:	Yes (The last Oregon PSP alert began on the northern beaches in August 1992 in mussels and continued to be present in razor clams through 1993.)
Individuals to contact:	CANNON, Deborah F.

Location:	Latitude: , Longitude:
General location information:	Oregon coast., Oregon. HAB Area code(s): US-22
Additional location information:	From Yachats to the California border, but not in the bays.
Bloom event dates (yyyy/mm/dd):
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information:	PSP in mussels began in August.

Causative organism known:	No
Causative Species/Genus:	Alexandrium catenella ( cells/L) Not confirmed
Co-Ocurring Species/Genus:
Chlorophyll concentration, if known:	µg/l
Additional bloom information:	Causative species not confirmed, thought to be Alexandrium catenella.
Event-related bibliography:

Weather:	Typical late summer and fall weather conditions. Fall rains began in early November which is later than usual.	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: 13 °C, Min: 10 °C

Salinity Range During Event:

Max: 30, Min: 25

Bloom location in the water column:

Growth:

Growth Comments

Not known.

Additional Environmental information:

Species containing the toxin

Toxin type

Toxin details

Max. concentration

Assay type

Kit used: No

Type of kit used:

Additional information:

Mussels was the only species affected.

Economic losses:

Management decision:

Commercial and recreational shellfish harvesting was closed on the beaches only, between late August and early November. Bay clamming was not closed.

Additional harmful effect information: