General Information

Event name: CA-90-006
Country: CANADA
Nature of the harmful event:
Seafood toxins
Event directly affected:
Shellfish , Humans
Toxicity detected: Yes
Associated syndrome: DSP
Unexplained toxicity: No
Species implicated in toxin transmission (transvector):
Report the outcome of a monitoring programme: Yes
Event occurred before in this location: No
Individuals to contact: de FREITAS, Anthony

Location & Date

[View larger map]
Location: Latitude: , Longitude:
General location information: Halifax Estern Shore, Scotia Fundy Region
HAB Area code(s): CA-17
Additional location information: Mahone Bay, Southern Nova Scotia.
Bloom event dates (yyyy/mm/dd):
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information: Early August


Causative organism known: Yes
Causative Species/Genus: Dinophysis spp. (100 - 200 cells/L)
October 20
Dinophysis spp. (1,600 cells/L)
September 28
Co-Ocurring Species/Genus:
Chlorophyll concentration, if known: µg/l
Additional bloom information: Mussel digestive glands contained remnants of Dinophysis norvegica. When biologists sample the water column in mid-August to mid-November, several Dinophysis species, including D. Norvegica, were present.
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: 20 °C, Min: 18 °C
Salinity Range During Event:
Bloom location in the water column:
Growth Comments Not known.
Additional Environmental information:

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: None.
Additional harmful effect information: At least 16 people developed symptoms of nausea, vomiting and diarrhoea shortly after eating cultured mussels. Extracts of raw and cooked mussels were toxic to mice (IP injection). Ionspray-MS (Sciex) and proton NMR spectroscopy established the presence o
Updated at 07:22 on 25 Sep 2013