General Information

Event name: US-01-012
Nature of the harmful event:
High Phyto concentration , Seafood toxins
Event directly affected:
Toxicity detected: Yes (Approximate range: Max. 1,246 g STXeq /100 g in Mytilus, 4,722 in Placopecten.)
Associated syndrome: PSP
Unexplained toxicity: No
Species implicated in toxin transmission (transvector):
Report the outcome of a monitoring programme: No
Event occurred before in this location: Yes (Almost yearly occurrence.)
Individuals to contact: BEAN, Laurie L.

Location & Date

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Location: Latitude: , Longitude:
General location information: Penobscot Bay, east., Maine.
HAB Area code(s): US-01
Additional location information: Eastern Maine.
Bloom event dates (yyyy/mm/dd):
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information: Detection date of quarantine levels: 18/06/01. Final closure repealed on 14/09/01.


Causative organism known: Yes
Causative Species/Genus: Alexandrium spp. ( cells/L)
Co-Ocurring Species/Genus:
Chlorophyll concentration, if known: µg/l
Additional bloom information: Most wide-spread shellfish toxicity in Eastern Maine in several years, following a year of almost no toxicity in this area.
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
Arctica islandica Saxitoxins STX eq 851 Bioassay-Mouse
Mya arenaria Saxitoxins STX eq 310 Bioassay-Mouse
Mytilus Saxitoxins STX eq 1,246 Bioassay-Mouse
Placopecten Saxitoxins STX eq 4,755 Bioassay-Mouse
Kit used: Type of kit used:
Additional information:
Economic losses:
Management decision: Shellfish harvest prohibited in PSP-closed areas.
Additional harmful effect information:
Updated at 06:55 on 3 Apr 2019