General Information

Event name: US-04-007
Country: UNITED STATES
Nature of the harmful event:
Seafood toxins , Mass mortalities
Event directly affected:
Natural Fish , Shellfish , Aquatic Mammals , Humans
Toxicity detected: Yes (Approximate range: 31.8-67.2MU/100g)
Associated syndrome: NSP , Aerosolized toxins effects
Unexplained toxicity: No
Species implicated in toxin transmission (transvector):
Report the outcome of a monitoring programme: Yes (State of Florida Redtide Monitoring Program)
Event occurred before in this location: Yes
Individuals to contact: HEIL, Cynthia A. , TRUBY, Earnest W.

Location & Date

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Location: Latitude: , Longitude:
General location information: Gulf of Mexico, Southwest Florida
HAB Area code(s): US-16
Additional location information: 26.40170 to 28.05828N - -82.25750 to -82.97810W
Bloom event dates (yyyy/mm/dd): Start: 2004-01-06, End: 2004-02-27
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information:

Microalgae

Causative organism known: Yes
Causative Species/Genus: Karenia brevis (2,010,000 cells/L)
Co-Ocurring Species/Genus: Karenia papilionacea (176,000 cells/L)
Chlorophyll concentration, if known: µg/l
Additional bloom information:
Event-related bibliography:

Environmental Conditions

Weather: partly cloudy Turbidity (NTU): Wind direction:
Stratified water: No Oxygen content (nL/L): Wind velocity: 15-20
Temperature (°C): 20 Oxygen saturation %: Current Direction:
Sechhi disk (m): Salinity: 32 Current Velocity: 0
Nutrient information:
Temperature Range During Event: Max: 20 °C, Min: 13 °C
Salinity Range During Event: Max: 36, Min: 26
Bloom location in the water column: Whole column
Growth: Advected
Growth Comments
Additional Environmental information: Wind velocity: 15-20 mph.

Toxin Assay Information

Species containing the toxin Toxin type Toxin details Max. concentration Assay type
Karenia brevis Brevetoxins 67.2 MU/100g Bioassay-Mouse
Kit used: Type of kit used:
Additional information:
Economic losses: Closed shellfish beds, no estimate of loss
Management decision: followed Biotoxin Control Plan-closed shellfish harvesting areas affected; openes when <20 Mu
Additional harmful effect information:
Updated at 05:25 on 14 May 2018
IOC/UNESCO ISSHA
IOC/UNESCO ICES PICES