Harmful Algal Information System: Event US-05-003

General Information

Event name:	US-05-003
Country:	UNITED STATES
Nature of the harmful event:	Water Discoloration , High Phyto concentration , Seafood toxins
Event directly affected:	Shellfish
Toxicity detected:	Yes
Associated syndrome:	PSP
Unexplained toxicity:
Species implicated in toxin transmission (transvector):
Report the outcome of a monitoring programme:	Yes (Human poisoning events are followed up by Florida Department of Health)
Event occurred before in this location:	Yes (Puffer Fish poisoning incidents from 2002-2004. 21 pufferfish poisoning cases in 2002; 3 in 2003, 4 in 2004, 0 in 2005)
Individuals to contact:	LANDSBERG, Jan

Location & Date

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Location:	Latitude: , Longitude:
General location information:	Indian River Lagoon north, near Titusville, North East Florida Coast HAB Area code(s): US-15
Additional location information:
Bloom event dates (yyyy/mm/dd):	Start: 2005-09-27, End: 2005-10-17
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information:	Multiple sites monitored throughout the Indian River Lagoon (IRL) - affected area in the north - station lat/long provided.

Microalgae

Causative organism known:	Yes
Causative Species/Genus:	Pyrodinium bahamense (301,600 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:	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
Mercenaria	Saxitoxins		374 ug STX eq./100 g	Bioassay-Mouse

Kit used:

Type of kit used:

Additional information:

Economic losses:

Management decision:

Puffer fish harvesting in the Indian River Lagoon has been banned by the FWC since 2002; routine PSP monitoring implemented since 2002. Saxitoxin concentrations in Mercenaria just over action limit on 9/27/05 - shellfish beds closed until below 80 ug STX/

Additional harmful effect information:

Updated at 06:43 on 2 Nov 2020