General Information

Event name: US-23-005
Country: UNITED STATES
Nature of the harmful event:
Water Discoloration , High Phyto concentration , Seafood toxins
Event directly affected:
Shellfish
Toxicity detected: Yes
Associated syndrome: DSP
Unexplained toxicity: No
Species implicated in toxin transmission (transvector):
Report the outcome of a monitoring programme: Yes (Gobler Lab and NYSDEC)
Event occurred before in this location:
Individuals to contact: GOBLER

Location & Date

[View larger map]
Location: Latitude: , Longitude:
General location information: Moriches Bay, Long Island
HAB Area code(s): US-08
Additional location information:
Bloom event dates (yyyy/mm/dd):
Quarantine levels dates (yyyy/mm/dd): First detection: 2023-05-05, End: 2023-07-01
Additional date-related information:

Microalgae

Causative organism known: Yes
Causative Species/Genus: Dinophysis acuminata (100,000,000 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: 22 °C, Min: 15 °C
Salinity Range During Event: Max: 25, Min: 5
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
Mercenaria mercenaria Okadaic Acid 400ng/g LC-MS
Kit used: No Type of kit used:
Additional information:
Economic losses:
Management decision: shellfish bed closure
Additional harmful effect information:
Created at 04:29 on 8 Apr 2025
IOC/UNESCO ISSHA
IOC/UNESCO ICES PICES


BESbswy