General Information

Event name: ITA-02-001
Country: ITALY
Nature of the harmful event:
High Phyto concentration
Event directly affected:
Toxicity detected: No
Associated syndrome: Aerosolized toxins effects
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: ZINGONE, Adriana , Bertolotto Rosa Maria

Location & Date

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Location: Latitude: 44.375000, Longitude: 8.941389
General location information: Genoa, Ligurian Sea
HAB Area code(s): ITA-016
Additional location information: the event was recorded at some beaches of the Genoa city coast
Bloom event dates (yyyy/mm/dd): Event Date:2005-07-17
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information: date of first health problems


Causative organism known: Yes
Causative Species/Genus: Ostreopsis ovata Fukuyo 1981 ( cells/L)
Co-Ocurring Species/Genus:
Chlorophyll concentration, if known: µg/l
Additional bloom information:
Event-related bibliography: Brescianini, C., Grillo, C., Melchiorre, N., Bertolotto, R., Ferrari, A., Vivaldi, B., Icardi, G., Gramaccioni, L., Funari, E. and Scardala, S. (2006) Ostreopsis ovata algal blooms affecting human health in Genova, Italy, 2005 and 2006. Weekly releases (19972007), 11, 3040. Ciminiello, P., Dell'Aversano, C., Fattorusso, E., Forino, M., Magno, G. S., Tartaglione, L., Grillo, C. & Melchiorre, N. 2006. The Genoa 2005 outbreak. Determination of putative palytoxin in Mediterranean Ostreopsis ovata by a new liquid chromatography tandem mass spectrometry method. Analytical Chemistry 78:6153-59.

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: 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: Ostreopsis is a benthic species. The bloom was occurring on the macroalgae

Toxin Assay Information

Species containing the toxin Toxin type Toxin details Max. concentration Assay type
Ostreopsis cf. ovata LC-MS
Kit used: No Type of kit used:
Additional information: Ovatoxins
Economic losses: non-quantified impact on tourism and recreational use of the beach
Management decision: the beaches were closed for some days
Additional harmful effect information: rhinorrhea, cough, dyspnea, wheezing and fever in people exposed to the aerosol The symptom lasted several days
Created at 12:36 on 12 Jun 2018
Updated at 01:12 on 27 Sep 2018