General Information

Event name: US-04-018
Nature of the harmful event:
High Phyto concentration , Seafood toxins
Event directly affected:
Shellfish , Humans
Toxicity detected: Yes (Approximate range: 40 - 41,369 g)
Associated syndrome: PSP
Unexplained toxicity: No
Species implicated in toxin transmission (transvector): possible Mya arenaria illness, harvested in a closed area for PSP
Report the outcome of a monitoring programme: Yes (State of Maine Biotoxin Monitoring Program)
Event occurred before in this location: Yes (nearly annually)
Individuals to contact: BEAN, Laurie L.

Location & Date

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Location: Latitude: , Longitude:
General location information: Maine coast,
HAB Area code(s): US-01 US-02
Additional location information:
Bloom event dates (yyyy/mm/dd): Start: 2004-01-28,
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information: Final date: ongoing into 2005, January date was continuation of 2003 event. 2004 toxicity first detected on 4/20/2004, toxicity continues through winter of 2004/5 Actual bloom end?


Causative organism known: Yes
Causative Species/Genus: Alexandrium spp. ( 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: 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: °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
Placopecten magellanicus Saxitoxins STX eq 41,369 Bioassay-Mouse
M.arenaria, M.edulis, C.virginica & M.modiol Saxitoxins STX eq Bioassay-Mouse
Kit used: No Type of kit used:
Additional information: Kit type: MIST alert, screening occ.
Economic losses:
Management decision:
Additional harmful effect information: