General Information

Event name: US-14-014
Country: UNITED STATES
Nature of the harmful event:
High Phyto concentration , Seafood toxins
Event directly affected:
Natural Fish
Toxicity detected: No
Associated syndrome: NSP , Aerosolized toxins effects
Unexplained toxicity:
Species implicated in toxin transmission (transvector): no documented human illnesses
Report the outcome of a monitoring programme: Yes (FWC/FWRI HAB Monitoring Program)
Event occurred before in this location: Yes (annually)
Individuals to contact: HUBBARD, Katherine

Location & Date

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Location: Latitude: , Longitude:
General location information: Southwest Florida (Sarasota, Charlotte, Lee, Collier counties), West Coast of Florida
HAB Area code(s): US-16
Additional location information: bloom spanned inshore/offshore waters but was spatially and temporally patchy
Bloom event dates (yyyy/mm/dd):
Quarantine levels dates (yyyy/mm/dd): First detection: 2014-10-30, End: 2014-11-24
Additional date-related information: 10/30/2014-11/24/14

Microalgae

Causative organism known: Yes
Causative Species/Genus: Karenia brevis (5547500 cells/L)
Dinophyceae. NSP producer
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:
Nutrient information:
Temperature Range During Event: Max: 31 °C, Min: 19.7 °C
Salinity Range During Event: Max: 36.1, Min: 33
Bloom location in the water column:
Surface
Growth: Advected
Growth Comments bloom was patchy and originated offshore
Additional Environmental information: DO Range: 3.3-8.6

Toxin Assay Information

Species containing the toxin Toxin type Toxin details Max. concentration Assay type
Hard Clam, Mercenaria mercenaria Brevetoxins <20MU/100g Bioassay-Mouse
Kit used: Type of kit used:
Additional information: Shellfish harvest is banned when K. brevis exceed 5,000 cells/L. Areas are reopened when K. brevis is <5,000 cells/L and shellfish are <20MU/100g. In this case, harvest was closed for cells concentrations but no toxicity was measured when shellfish were tested to re-open.
Economic losses:
Management decision: shellfish harvest closure
Additional harmful effect information:
Created at 07:58 on 8 Feb 2017
Updated at 09:32 on 14 May 2018
IOC/UNESCO ISSHA
IOC/UNESCO ICES PICES