General Information

Event name: US-98-012
Nature of the harmful event:
Seafood toxins
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
Event occurred before in this location: Yes (Annually.)
Individuals to contact: ANDERSON, Donald M.

Location & Date

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Location: Latitude: , Longitude:
General location information: Gulf of Maine, Maine.
HAB Area code(s): US-03
Additional location information: Western Maine Coastal Current.
Bloom event dates (yyyy/mm/dd): Start: 1998-04-29, End: 1998-06-30
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information: April 29 - June.


Causative organism known: Yes
Causative Species/Genus: Alexandrium sp. (1,000 cells/L)
Probably fundyense.
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: No Oxygen content (nL/L): Wind velocity:
Temperature (°C): Oxygen saturation %: Current Direction:
Sechhi disk (m): Salinity: Current Velocity: 0
Nutrient information:
Temperature Range During Event: Max: 12 °C, Min: 6 °C
Salinity Range During Event: Max: 30, Min: 26
Bloom location in the water column:
Growth Comments outbreaks from region 3 probably due to advection of populations from region 2 and local germination of cysts with subsequent accumulation and growth near frontal boundaries of river plume. River plume/coastal current advected populations into northern ar
Additional Environmental information:

Toxin Assay Information

Species containing the toxin Toxin type Toxin details Max. concentration Assay type
Kit used: No Type of kit used:
Additional information:
Economic losses:
Management decision: shellfish closures in southern Maine, NH, and northern Mass. - mid-May through June max toxicity 600g/100g
Additional harmful effect information: