Harmful Algal Information System: Event US-89-017

General Information

Event name:	US-89-017
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 (1979.)
Individuals to contact:	ROSS, Maria R.

Location & Date

[View larger map]

Location:	Latitude: , Longitude:
General location information:	San Louis Obispo County., California. HAB Area code(s): US-20
Additional location information:	Areas affected: Moro Bay, Moonstone Beach, Cambria, North Estero Bay, Estero Bay Cayucos.
Bloom event dates (yyyy/mm/dd):
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information:	Late August- October, December

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

The bloom originated in San Louis Obispo and Santa Barbara Counties.

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:

The annual mussel quarantine, May 1 to October 31, was in effect, however in December emergency quarantine was issued and commercial oyster operations in Moro Bay were shut doun.

Additional harmful effect information:

Paralytic toxin levels elevated in shellfish - cultured and wild bay mussels, wild sea mussels, and cultured pacific oysters reachign 1600 micrograms in sea mussels and 540 micrograms in oysters.