General Information

Event name: US-19-017
Nature of the harmful event:
Water Discoloration , High Phyto concentration , Seafood toxins
Event directly affected:
Toxicity detected: Yes (Approximate range: 79ug/100g)
Associated syndrome: PSP
Unexplained toxicity: No
Species implicated in toxin transmission (transvector):
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: Indian River Lagoon, Mosquito Lagoon, East Coast of Florida
HAB Area code(s): US-15
Additional location information: Lagoons
Bloom event dates (yyyy/mm/dd): Start: 2019-05-15, End: 2019-10-16
Quarantine levels dates (yyyy/mm/dd): First detection: 2019-06-25, End: 2019-10-10
Additional date-related information:


Causative organism known: Yes
Causative Species/Genus: Pyrodinium bahamense (1,557,768 cells/L)
PSP 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: °C, Min: °C
Salinity Range During Event:
Bloom location in the water column:
In situ
Growth Comments we did not conduct subsurface sampling but the bloom was likely distributed throughout the water column
Additional Environmental information:

Toxin Assay Information

Species containing the toxin Toxin type Toxin details Max. concentration Assay type
Crasseotrea virginica (Eastern oyster) Saxitoxins 79ug/100g Bioassay-Mouse
Kit used: Yes Type of kit used: Neogen
Additional information:
Economic losses:
Management decision: shellfish harvest closures were initiated as a result of toxin detection and did not reopen until 10/10/2019, when bloom conditions had largely improved
Additional harmful effect information:
Created at 04:38 on 8 Apr 2020