General Information

Event name: US-07-003
Nature of the harmful event:
Water Discoloration , High Phyto concentration , Seafood toxins , Mass mortalities
Event directly affected:
Planktonic life , Natural Fish , Birds , Aquatic Mammals , Humans
Toxicity detected: Yes (Approximate range: 0-32.1 MU/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 (Almost annually between Pinellas and Lee Counties)
Individuals to contact: TRUBY, Earnest W.

Location & Date

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Location: Latitude: , Longitude:
General location information: Southwest Florida, Gulf of Mexico
HAB Area code(s): US-16
Additional location information:
Bloom event dates (yyyy/mm/dd): Start: 2007-01-07, End: 2007-03-15
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information: Detected earlier than date above but not near shellfish harvesting areas. Carried over from 2006. Ended 3/26/07.


Causative organism known: Yes
Causative Species/Genus: Karenia brevis (15500000 cells/L)
Co-Ocurring Species/Genus: Karenia papilionacea (7000 cells/L)
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): 6.96 Wind velocity:
Temperature (°C): 22.9 Oxygen saturation %: Current Direction:
Sechhi disk (m): Salinity: 36.6 Current Velocity: 0
Nutrient information:
Temperature Range During Event: Max: 29 °C, Min: 24 °C
Salinity Range During Event: Max: 39, Min: 33
Bloom location in the water column: Whole column
Growth: Advected
Growth Comments
Additional Environmental information:

Toxin Assay Information

Species containing the toxin Toxin type Toxin details Max. concentration Assay type
Karenia brevis Brevetoxins 32.1 MU/100 g Bioassay-Mouse
Kit used: No Type of kit used:
Additional information: Multiple species (fish, manatees and turtles) ELISA data available.
Economic losses: Closed shellfish harvesting areas, no estimate of loss.
Management decision: Followed Biotoxin Control Plan, closed shellfish harvesting areas; open when < 20 MU/100g.
Additional harmful effect information:
Updated at 06:42 on 14 May 2018