General Information

Event name: ES-00-021
Country: SPAIN
Nature of the harmful event:
Mass mortalities , Other ( Finfish mortalities.)
Event directly affected:
Natural Fish , Aquaculture Fish
Toxicity detected: No
Associated syndrome: OTHER
Unexplained toxicity: No
Species implicated in toxin transmission (transvector):
Report the outcome of a monitoring programme: Yes (Monitoring Programme of Centre d'Aqüicultura-IRTA.)
Event occurred before in this location: Yes (Mortalities of wild fauna (finfish and shelfish) in the bay is observed in winter time since 1994, coinciding with the blooming of a dinoflagellate toxic to fauna (Gyrodinium cosicum).)
Individuals to contact: DELGADO, Maximino

Location & Date

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Location: Latitude: 40.619722, Longitude:
General location information: Alfacs Bay., Catalonia, NE Spain.
HAB Area code(s): ES-21
Additional location information: The affected area is dedicated to intensive mussel cultivation in rafts, finfish cultivation in ponds located at the margin of the bay and to exploitation of natural shellfish and fisheries.
Bloom event dates (yyyy/mm/dd): Start: 2000-02-19, End: 2000-02-20
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information:

Microalgae

Causative organism known: Yes
Causative Species/Genus: Gyrodinium corsicum (20,000,000 cells/L)
Toxic to fauna
Co-Ocurring Species/Genus:
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): Wind velocity:
Temperature (°C): Oxygen saturation %: Current Direction:
Sechhi disk (m): Salinity: Current Velocity: 0
Nutrient information:
Temperature Range During Event: Max: 12 °C, Min: 13 °C
Salinity Range During Event: Max: 36, Min: 35
Bloom location in the water column:
Subsurface
Growth:
In situ
Growth Comments
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: Mortality of 3000 fishes Sparus aurata in culture.
Management decision: To replace the water in the ponds with water from the bay when the concentration of Gyrodinium corsicum declined.
Additional harmful effect information: Toxic to fauna.
Updated at 01:19 on 9 Aug 2019
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