Harmful Algal Information System: Event US-92-018

General Information

Event name:	US-92-018
Country:	UNITED STATES
Nature of the harmful event:	Mass mortalities
Event directly affected:	Aquaculture Fish
Toxicity detected:	No
Associated syndrome:
Unexplained toxicity:	No
Species implicated in toxin transmission (transvector):
Report the outcome of a monitoring programme:	Yes
Event occurred before in this location:	No
Individuals to contact:	CHAPMAN, Pat

Location:	Latitude: , Longitude:
General location information:	Glen Ayr Marina, Hoodsport., Washington. HAB Area code(s): US-23
Additional location information:	Glen Ayr Marina, Hoodsport, southern Hood Canal, Washington.
Bloom event dates (yyyy/mm/dd):	Event Date:1992-04-29 Start: 1992-04-29,
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information:

Causative organism known:	No
Causative Species/Genus:
Co-Ocurring Species/Genus:	Pseudo-nitzschia pungens ( cells/L) Pseudo-nitzschia pungens f. Pungens
Chlorophyll concentration, if known:	µg/l
Additional bloom information:	Causative specie unknown, but a 28-30 痠 diameter, pigmented, gymnodinium-like dinoflagellate was present. Also Pseudonitzschia pungens f. pungens.
Event-related bibliography:

Weather:	Weather had been cluody and rainy for previuos 5 days. Wind the next day and bloom gone.	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:

In situ

Growth Comments

Probably in situ growth; water brown, bloom extended about 1/2 mile from site.

Additional Environmental information:

Water conditions were normal.

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:

Fish were released from net pens; probably few survived.

Additional harmful effect information: