General Information

Event name: US-98-009
Nature of the harmful event:
Seafood toxins
Event directly affected:
Toxicity detected: Yes (Approximate range: 735 g STXeq / 100 g)
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 (Generally a yearly occurrence, since 1958, when monitoring began.)
Individuals to contact: HURST, John W.

Location & Date

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Location: Latitude: , Longitude:
General location information: See Complementary Information., Maine.
HAB Area code(s): US-01 US-02
Additional location information: Kittery to Cape Elizabeth,closed to Mussel and Carnivorous Snail, May 14. Basin Point, Harpswell to Fort Popham, Phippsburg, closed to Mussel harvesting May 15. New Meadows River, closed to clam and oyster harvesting, May 21. Reopened June 3. Moose Cove Trescott to Canadian Border, closed to clam harvesting June 24. Jordan Island to Petit Manan, closed to mussel harvesting July 1.
Bloom event dates (yyyy/mm/dd):
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information: May, June & July. See Complementary Information.


Causative organism known: Yes
Causative Species/Genus: Alexandrium tamarense ( 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
Mussel & Carnivorous snail (Kittery, 14 May) Saxitoxins STX eq 323 Bioassay-Mouse
Mussels (Basin Point, 15 May) Saxitoxins STX eq 732 LC
Clam & Oyster (New Meadows River, 21 May) Saxitoxins STX eq 119 LC
Clam (Moose Cove, 24 June) Saxitoxins STX eq 80 LC
Mussel (Jordan Island, July 1) Saxitoxins STX eq 78 LC
Kit used: No Type of kit used:
Additional information:
Economic losses:
Management decision: Affected areas closed to the harvest.
Additional harmful effect information: