General Information

Event name: CA-92-005
Country: CANADA
Nature of the harmful event:
High Phyto concentration
Event directly affected:
Toxicity detected: Yes (Approximate range: Domoic acid was detected at low levels in the phytoplankton.)
Associated syndrome: ASP
Unexplained toxicity: No
Species implicated in toxin transmission (transvector):
Report the outcome of a monitoring programme: Yes
Event occurred before in this location: Yes (Pseudonitzschia pungens and low levels of domoic acid have been detected in New London Bay since 1988. In 1991, the bay was closed to harvesting for the first time due to domoic acid contamination.)
Individuals to contact: SMITH, John C.

Location & Date

[View larger map]
Location: Latitude: , Longitude:
General location information: Eastern Prince Edward Island, Gulf Region
HAB Area code(s): CA-24
Additional location information: New London Bay
Bloom event dates (yyyy/mm/dd):
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information: Mid to late October.


Causative organism known: Yes
Causative Species/Genus: Pseudo-nitzschia pungens f. multiseries (30,000 cells/L)
Co-Ocurring Species/Genus:
Chlorophyll concentration, if known: µg/l
Additional bloom information: About 80% of the P. pungens population was cf. mutiseries as determined by FITC-lecting staining and scanning electron microscopy. Pseudo-nitzschia ( previously known as Nitzschia) pungens cf multiseries.
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: 27 Current Velocity: 0
Nutrient information:
Temperature Range During Event: Max: 12 °C, Min: 9 °C
Salinity Range During Event:
Bloom location in the water column:
In situ
Growth Comments Most probably, the population originated within New London Bay.
Additional Environmental information:

Toxin Assay Information

Species containing the toxin Toxin type Toxin details Max. concentration Assay type
Pseudo-nitzschia pungens Domoic Acid DA Low levels LC
Kit used: Type of kit used:
Additional information: FMOC / HPLC method.
Economic losses:
Management decision: None required.
Additional harmful effect information: No domoic acid toxicity in shellfish. Domoic acid was detected at low levels in the phytoplankton (FMOC/HPLC method).
Updated at 07:53 on 25 Sep 2013