Event name: | CA-99-001 | |
Country: | CANADA | |
Nature of the harmful event: |
Seafood toxins | |
Event directly affected: |
||
Toxicity detected: | Yes (Approximate range: 550 µg DA / g (August 5) in scallops liver.) | |
Associated syndrome: | ASP | |
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: | BONNEAU, Esther , LEVASSEUR, Maurice , SAUVÉ, Gilbert |
Location: | Latitude: 47.466667, Longitude: -61.799722 | |
General location information: |
Iles-de-la-Madeleine, Quebec Region HAB Area code(s): CA-23 |
|
Additional location information: | ||
Bloom event dates (yyyy/mm/dd): | Start: 1999-06-09, | |
Quarantine levels dates (yyyy/mm/dd): | ||
Additional date-related information: | Final date, end of August 1999. |
Causative organism known: | Yes | |
Causative Species/Genus: |
Pseudo-nitzschia delicatissima
(1,750 cells/L)
Pseudo-nitzschia seriata (12,000 cells/L) |
|
Co-Ocurring Species/Genus: | ||
Chlorophyll concentration, if known: | µg/l | |
Additional bloom information: | The DA outbreak coincided with small peaks of Pseudo-nitzschia seriata (12000 cells/l) and P. delicatissima (1750 cells/l) in the Laguna of Havre-aux-Maisons (sampling site of the DFO monitoring program). These cells were probably advected in the Laguna. | |
Event-related bibliography: |
|
||||||||||||||||||||||||||
Nutrient information: | ||||||||||||||||||||||||||
Temperature Range During Event: | Max: °C, Min: °C | |||||||||||||||||||||||||
Salinity Range During Event: | ||||||||||||||||||||||||||
Bloom location in the water column: | ||||||||||||||||||||||||||
Growth: |
Advected
In situ |
|||||||||||||||||||||||||
Growth Comments | Pseudo-nitzschia spp. cells were probably growing offshore (in the central part of the Gulf) and a part of the population was advected in the Laguna. | |||||||||||||||||||||||||
Additional Environmental information: | Maximum Pseudo-nitzschia seriata cells abundance coincide with water temperature of 14.1°C. The wind was 10-15 km/h NW. |
|
|||||||||||||||||
Kit used: | Type of kit used: | ||||||||||||||||
Additional information: | |||||||||||||||||
Economic losses: | |||||||||||||||||
Management decision: | The Government of Quebec (Ministère de l’agriculture, des pêcheries et de l’alimentation – MAPAQ) sent a warning to the media to inform the public of the potential health tread of consuming whole scallops. | ||||||||||||||||
Additional harmful effect information: | First detection of domoic acid in scallops liver on June 9. Maximum toxicity (550 µg DA/g) was measured on August 5 in scallops liver. Scallops were still toxic at the end of August. Scallops were harvested around the Islands. DA was also measured in blue |