General Information

Event name: US-19-022
Nature of the harmful event:
High Phyto concentration
Event directly affected:
Toxicity detected: Yes (Approximate range: 0.81 - 22.24 ug/g)
Associated syndrome: ASP
Unexplained toxicity: No
Species implicated in toxin transmission (transvector): Mya arenaria, Mytilus edulis, Eastern oysters (Crassostrea)
Report the outcome of a monitoring programme: Yes (Maine Department of Marine Resources Biotoxin Program)
Event occurred before in this location: Yes
Individuals to contact: Lewis, Bryant

Location & Date

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Location: Latitude: , Longitude:
General location information: Maine Coastline,
HAB Area code(s): US-01
Additional location information:
Bloom event dates (yyyy/mm/dd): Start: 2019-09-16, End: 2019-12-16
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information: Low levels first detected in August


Causative organism known: Yes
Causative Species/Genus: Pseudo-nitzschia spp. (63,750 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: °C, Min: °C
Salinity Range During Event:
Bloom location in the water column:
Growth Comments
Additional Environmental information:

Toxin Assay Information

Species containing the toxin Toxin type Toxin details Max. concentration Assay type
Kit used: Type of kit used:
Additional information:
Economic losses:
Management decision: Bloom coincided with the tail end of PSP bloom: Surf clams closed 5/1/19. Razor clams closed 6/21/19. Soft shell clams closed 7/1/19 until 8/19/19. Razor and surf clams reopened 12/20/19.
Additional harmful effect information:
Created at 08:45 on 8 Apr 2020