General Information

Event name: US-13-012
Nature of the harmful event:
Water Discoloration , High Phyto concentration
Event directly affected:
Toxicity detected: Yes
Associated syndrome: PSP
Unexplained toxicity: No
Species implicated in toxin transmission (transvector):
Report the outcome of a monitoring programme: Yes (Florida Deparment of Agriculture and Consumer Services Biotoxin Contigency Program)
Event occurred before in this location: Yes (Annually since 2002)
Individuals to contact: SCOTT, Paula

Location & Date

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Location: Latitude: 28.606389, Longitude: -80.606111
General location information: Indian River Lagoon, East Coast FL
HAB Area code(s): US-15
Additional location information: 22 miles north to south, 13 miles east to west
Bloom event dates (yyyy/mm/dd): Event Date:2013-06-07
Start: 2013-06-07, End: 2013-10-23
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information:


Causative organism known: Yes
Causative Species/Genus: Pyrodinium bahamense (2913300 cells/L)
Co-Ocurring Species/Genus: Aureoumbra lagunensis (489280000 cells/L)
Chlorophyll concentration, if known: µg/l
Additional bloom information: Dactyliosolen fragilissimus Skeletonema costatum Cylindrotheca closterium Leptocylindrus minimus
Event-related bibliography: Title: Resource guide for public health response to harmful algal blooms in Florida Authors: Abbott, G.M.; Landsberg, J.H.; Reich, A.R.; Steidinger, K.A.; Ketchen, S.; Blackmore, C. Year: 2009 Source: Fish and Wildlife Research Institute Technical Report TR-14, viii + 132 p. Title: Detection methods and their limitations: PSP toxins in the southern puffer fish Sphoeroides nephelus responsible for human poisoning events in Florida in 2004 Authors: Etheridge, S.; Deeds, J.; Hall, S.; White, K.; Abbott, J.; Landsberg, J.; Conrad, S.; Bodager, D.; Jackow, G. Year: 2006 Source: African Journal of Marine Science, v.28 no.2, p.383-387 Title: Non-traditional vectors for Paralytic Shellfish Poisoning Authors: Deeds, J.R.; Landsberg, J.H.; Etheridge, S.M.; Pitcher, G.C.; Longan, S.W. Year: 2008 Source: Marine Drugs, v.6, p.308-348 Title: Concentrations of saxitoxin and tetrodotoxin in three species of puffers from the Indian River Lagoon, Florida, the location for multiple cases of saxitoxin puffer poisoning from 2002 to 2004 Authors: Deeds, J.R.; White, K.D.; Etheridge, S.M.; Landsberg, J.H. Year: 2008 Source: Transactions of the American Fisheries Society, v.137, p.1317-1326 Title: Saxitoxin puffer fish poisoning in the United States, with the first report of Pyrodinium bahamense as the putative toxin source Authors: Landsberg, J.H.; Hall, S.; Johannessen, J.N.; White, K.D.; Conrad, S.M.; Abbott, J.P.; Flewelling, L.J.; Richardson, R.W.; Dickey, R.W.; Jester, E.L.E.; Etheridge, S.M.; Deeds, J.R.; Van Dolah, F.M.; Leighfield, T.A.; Zou, Y.; Beaudry, C.G.; Benner, R.A. Year: 2006 Source: Environmental Health Perspectives, v.114 no.10, p.1502-1507

Environmental Conditions

Weather: Turbidity (NTU): Wind direction:
Stratified water: Yes Oxygen content (nL/L): 10.5 Wind velocity:
Temperature (°C): 32.3 Oxygen saturation %: Current Direction:
Sechhi disk (m): Salinity: 35.8 Current Velocity:
Nutrient information:
Temperature Range During Event: Max: 34.5 °C, Min: 27.1 °C
Salinity Range During Event: Max: 37.2, Min: 27.7
Bloom location in the water column: Whole column
In situ
Growth Comments
Additional Environmental information:

Toxin Assay Information

Species containing the toxin Toxin type Toxin details Max. concentration Assay type
Hard clams contaminated with STX from Pyrodin Saxitoxins <80 ug/100 gram shel Bioassay-Mouse
Kit used: Yes Type of kit used: Jelled Rapid Test for PSP
Additional information: Shellfish harvesting closure precipitated by a positive Jellett Rapid Test for PSP. No mouse biosssays were above the regulatory limit.
Economic losses: Closure of 1 shellfish harvesting zone for 30 days.
Management decision: Shellfish harvesting closures with a positive JRT test for PSP. Area remain closed until two consecutive mouse bioassays, collected at least 7 days apart, return with results below 80 micrograms STX/100 grams shellfish. Harvesting of pufferfish has been b
Additional harmful effect information:
Created at 09:06 on 8 Jan 2015