| Event name: | US-17-016 | |
| Country: | UNITED STATES | |
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Nature of the harmful event: |
Water Discoloration , High Phyto concentration , Seafood toxins , Mass mortalities | |
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Event directly affected: |
Natural Fish , Aquatic Mammals | |
| Toxicity detected: | Yes (Approximate range: < or = to 39.8 micrograms per gram shellfish tissue) | |
| Associated syndrome: | NSP , Aerosolized toxins effects | |
| Unexplained toxicity: | No | |
| Species implicated in toxin transmission (transvector): | In March 2017, recreationally harvested gastropods resulted in documented human illnesses (likely conch or whelk, but no meal remnants remained for testing) | |
| 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: | Latitude: 27.000000, Longitude: -81.000000 | |
| General location information: |
Southwest Florida (Pinellas, Hillsborough, Manatee, Sarasota, Charlotte, Lee, Collier, Monroe counties), West Coast of Florida HAB Area code(s): US-16 |
|
| Additional location information: | bloom primarily spanned inshore and coastal waters but was spatially and temporally patchy | |
| Bloom event dates (yyyy/mm/dd): | End: 2017-06-13 | |
| Quarantine levels dates (yyyy/mm/dd): | First detection: 2017-07-07, | |
| Additional date-related information: | 17-18 season 10/2/17-present 9/9/16 1st event | |
| Causative organism known: | Yes | |
| Causative Species/Genus: |
Karenia brevis
(11200000 cells/L)
Max on 2/1/17; 6,479,760 on 12/26/17 (2nd bloom); NSP Producer |
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| Co-Ocurring Species/Genus: | ||
| Chlorophyll concentration, if known: | µg/l | |
| Additional bloom information: | ||
| Event-related bibliography: | Foley, A., Stacy, B. A., Schueller, P., Flewelling, L. J., Schroeder, B., Minch, K., Fauquier, D. A., Foote, J. J., Manire, C., Atwood, K. E., Granholm, A. A., Landsberg, J. H., 2019. Assessing Karenia brevis red tide as a mortality factor of sea turtles in Florida. Dis. Aquat. Org. 132, 109–124. | |
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| Nutrient information: | ||||||||||||||||||||||||||
| Temperature Range During Event: | Max: °C, Min: °C | |||||||||||||||||||||||||
| Salinity Range During Event: | ||||||||||||||||||||||||||
| Bloom location in the water column: | Whole column | |||||||||||||||||||||||||
| Growth: | Advected | |||||||||||||||||||||||||
| Growth Comments | Blooms were patchy and extensive, and occurred in inland and coastal areas, including Sarasota Bay, Charlotte Harbor, and along the adjoining coastal areas. | |||||||||||||||||||||||||
| Additional Environmental information: | ||||||||||||||||||||||||||
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| Kit used: Yes | Type of kit used: MARBIONC | |||||||||||
| 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 remained closed between bloom events except in authorized use zones. | |||||||||||
| Economic losses: | ||||||||||||
| Management decision: | shellfish harvest closure remained in place | |||||||||||
| Additional harmful effect information: | ||||||||||||
