General Information

Event name: CA-11-002
Country: CANADA
Nature of the harmful event:
High Phyto concentration , Seafood toxins
Event directly affected:
Toxicity detected: Yes
Associated syndrome: DSP
Unexplained toxicity:
Species implicated in toxin transmission (transvector): mussels
Report the outcome of a monitoring programme: Yes (Harmful Algae Monitoring Program)
Event occurred before in this location: No
Individuals to contact: HAIGH, Nicky

Location & Date

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Location: Latitude: 50.180000, Longitude: -125.150000
General location information: Upper Strait of Georgia, Pacific Region
HAB Area code(s): CA-38
Additional location information: toxicity was not actually detected at this site, but this is the nearest plankton monitoring site in the area where DSP was detected by the CFIA
Bloom event dates (yyyy/mm/dd): Event Date:2011-07-20
Quarantine levels dates (yyyy/mm/dd): First detection: 2011-07-19,
Additional date-related information: DSP was detected at Gorge Harbour, July 19/11, 25km from Conville Bay (this monitoring site)


Causative organism known: Yes
Causative Species/Genus: Dinophysis spp. (24 000 cells/L)
mostly D. acuminata, some D. fortii, D. acuta, and D. rotundata; max @ 5m
Co-Ocurring Species/Genus: Heterosigma akashiwo (1 000 000 cells/L)
max @ 1m
Chlorophyll concentration, if known: µg/l
Additional bloom information:
Event-related bibliography:

Environmental Conditions

Weather: Turbidity (NTU): Wind direction:
Stratified water: Yes Oxygen content (nL/L): 8.3@1m,8@5m,6.3@10m Wind velocity:
Temperature (°C): 17.5@1m,16.5@5m Oxygen saturation %: Current Direction:
Sechhi disk (m): Salinity: 20@1m,20@5m, 25@10m Current Velocity:
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: Combined Dinophysis spp. 12 000/L @1m; 24 000/L @5m; and 13 000/L @10m

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:
Additional harmful effect information:
Updated at 03:11 on 19 Sep 2013