General Information

Event name: US-24-006
Country: UNITED STATES
Nature of the harmful event:
Seafood toxins
Event directly affected:
Shellfish
Toxicity detected: Yes (Approximate range: Crassostrea virginica from 37.0 ug/100g to 85.67 ug/100g)
Associated syndrome: PSP
Unexplained toxicity: No
Species implicated in toxin transmission (transvector):
Report the outcome of a monitoring programme: Yes (Florida Fish and Wildlife Conservation Commission-Fish and Wildlife Research Institute /Florida Department of Agriculture and Consumer Services)
Event occurred before in this location: Yes (Annually)
Individuals to contact: HUBBARD, Katherine , ZAHARA, Meredith

Location & Date

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Location: Latitude: , Longitude:
General location information: Indian River Lagoon, East coast of Florida
HAB Area code(s): US-15
Additional location information: annual summertime blooms occur along the east coast in the Indian River Lagoon Above dates represent shellfish toxin testing for of PSP toxins. Bloom dates using 5,000+ cells/L - Start: 4/23/24; End: 10/2/24.
Bloom event dates (yyyy/mm/dd):
Quarantine levels dates (yyyy/mm/dd): First detection: 2024-07-23, End: 2024-11-19
Additional date-related information:

Microalgae

Causative organism known: Yes
Causative Species/Genus: Pyrodinium bahamense (516,275 (5/28/24) cells/L)
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: 34.3 °C, Min: 22.6 °C
Salinity Range During Event: Max: 35.7, Min: 21.0
Bloom location in the water column: Whole column
Growth:
In situ
Growth Comments
Additional Environmental information:

Toxin Assay Information

Species containing the toxin Toxin type Toxin details Max. concentration Assay type
Crassostrea virginica Saxitoxins 85.67 ug/100g Bioassay-Mouse
Kit used: No Type of kit used:
Additional information: AquaBC rapid tests were used to screen for presence/absence of PSP toxin in shellfish. Postitive mouse bioassays >= 80 ug/100g were used for harvest closure per NSSP guidelines.
Economic losses:
Management decision: shellfish harvest closure
Additional harmful effect information:
Created at 01:50 on 9 Apr 2025
IOC/UNESCO ISSHA
IOC/UNESCO ICES PICES


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