General Information

Event name: US-88-007
Nature of the harmful event:
Event directly affected:
Toxicity detected: No
Associated syndrome:
Unexplained toxicity:
Species implicated in toxin transmission (transvector):
Report the outcome of a monitoring programme: No
Event occurred before in this location: Yes (Chronic annual blooms.)
Individuals to contact: OLSEN, Paul , WILK, Stuart

Location & Date

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Location: Latitude: , Longitude:
General location information: Raritan Bay - Sandy Hook Bay, southern half.,
HAB Area code(s): US-01
Additional location information:
Bloom event dates (yyyy/mm/dd): Start: 1988-05-24, End: 1988-08-02
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information:


Causative organism known: Yes
Causative Species/Genus: Eutreptia lanowii ( cells/L)
dominant 5-25 x 10(3) cells ml(-1)
Katodinium rotundatum ( cells/L)
dominant 5-25 x 10(3) cells ml(-1)
Olisthodiscus luteus ( cells/L)
dominant 5-25 x 10(3) cells ml(-1)
Co-Ocurring Species/Genus: Prorocentrum triestinum ( cells/L)
sub dominant 1-5 x 10(3) cells ml(-1)
Prorocentrum minimum ( cells/L)
sub dominant 1-5 x 10(3) cells ml(-1)
Chlorophyll concentration, if known: µg/l
Additional bloom information:
Event-related bibliography:

Environmental Conditions

Weather: Turbidity (NTU): Wind direction:
Stratified water: Oxygen content (nL/L): Wind velocity:
Temperature (°C): Oxygen saturation %: Current Direction:
Sechhi disk (m): Salinity: Current Velocity:
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: Water turbid; Water column mixed; Chlorophyll maximum: 278 g 1(-1); Chlorophyll throughout bloom ranged 20-278 g 1(-1); D.O. levels as low as 2.2 mg/1

Toxin Assay Information

Species containing the toxin Toxin type Toxin details Max. concentration Assay type
Kit used: Type of kit used:
Additional information:
Economic losses:
Management decision: Increased surveillence
Additional harmful effect information: reddish-brown water;fauna kills June 22-28; Aug. 2, Sandy Hook Bay south shore.The fauna kill in June included mortalities of finfish, especially northern pipefish, scup, northern sea robin, smallmouth flounder, and summer flounder. Megainvertebrates kill