General Information

Event name: US-03-017
Nature of the harmful event:
Water Discoloration , High Phyto concentration
Event directly affected:
Toxicity detected: No
Associated syndrome: OTHER
Unexplained toxicity: No
Species implicated in toxin transmission (transvector):
Report the outcome of a monitoring programme: No
Event occurred before in this location: No
Individuals to contact: MONCREIFF, Cynthia A.

Location & Date

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Location: Latitude: 30.289000, Longitude: -88.857300
General location information: Point Cadet Harbor., Mississippi, Gulf of Mexico.
HAB Area code(s): US-17
Additional location information: SE coastal Mississippi waters. Harbor area accessed through Biloxi Bay and Mississippi Sound.
Bloom event dates (yyyy/mm/dd):
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information: 2 December 2003 report of bloom; end date not known.


Causative organism known: No
Causative Species/Genus: Akashiwo sanguinea (est. 500,0 cells/L)
Cell count on 3 Dec 2003 was 330 000/L
Co-Ocurring Species/Genus:
Chlorophyll concentration, if known: µg/l
Additional bloom information: Monospecific bloom event; bloom a minimal bloom event; did not persist at location.
Event-related bibliography:

Environmental Conditions

Weather: Cool and clear Turbidity (NTU): Wind direction: N
Stratified water: No Oxygen content (nL/L): Wind velocity: 18-28
Temperature (°C): 18 Oxygen saturation %: Current Direction:
Sechhi disk (m): Salinity: 18 Current Velocity: 0
Nutrient information:
Temperature Range During Event: Max: °C, Min: °C
Salinity Range During Event:
Bloom location in the water column:
In situ
Growth Comments
Additional Environmental information: Harbor location protected from prevailing winds; additional protection provided by seawalls from both wind and waves. Location relatively undisturbed. Current direction: mixed. Current velocity: Tidal

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: None.
Management decision: None.
Additional harmful effect information: Samples collected in response to report of discolored water in harbor; divers in area concerned if bloom event was a health concern. No harmful effects noted. Associated Syndrome: Other: Low D.O.