Harmful Algal Information System: Event US-89-012

General Information

Event name:	US-89-012
Country:	UNITED STATES
Nature of the harmful event:	Seafood toxins
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:	Yes
Event occurred before in this location:	Yes (1962, 1963, 1964, 1965, 1980, 1982, 1984, 1986, 1988.)
Individuals to contact:	ROSS, Maria R.

Location & Date

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Location:	Latitude: , Longitude:
General location information:	Marin county., California. HAB Area code(s): US-21
Additional location information:	Areas affected: Drakes Estero areas #12, #17, Drakes Bay Chimney Rock Boat Launch, Kehoe Beach, Stinson Beach, Tomales Bay Lawson's Landing.
Bloom event dates (yyyy/mm/dd):
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information:	December 1988, January, Febrary and an isolated occurrence March 4, 1989 Stinson Beach (wild sea mussels).

Microalgae

Causative organism known:	Yes
Causative Species/Genus:	Protogonyaulax catenella ( 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

No data available but most probably in situ growth. No visible red tide conditions reported for this period, however there was a reference to the 'year's highly unusual winter bloom'.

Additional Environmental information:

No data available

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:

Closure of commercial shellfisheries, emergency quarantine on sport-harvested shellfish from the entire Marin county coastline, which was completely lifted on March 20, 1989.

Additional harmful effect information:

Paralytic Shellfish Toxin Activity in shellfish; sentinel bay mussels, natural bay mussels, sentinel sea mussels, natural sea mussels, pacific oysters, sentinel Japanese scallops, gapers clams (viscera).