General Information

Event name: BR-16-003
Country: BRAZIL
Nature of the harmful event:
Water Discoloration , High Phyto concentration , Seafood toxins , Foam/Mucilage in the coast
Event directly affected:
Toxicity detected: Yes (Approximate range: High levels of DSP with MBA)
Associated syndrome: DSP
Unexplained toxicity:
Species implicated in toxin transmission (transvector): Perna perna
Report the outcome of a monitoring programme: Yes (PNCMB)
Event occurred before in this location: Yes (DSP is endemic)
Individuals to contact: Proenca, Luis

Location & Date

[View larger map]
Location: Latitude: -26.977778, Longitude: -48.583056
General location information: Praia Larenjeiras, Santa Catarina
HAB Area code(s): BR-18
Additional location information: The bloom was advedted to cover extense region, from Santa Catarina to São Paulo.
Bloom event dates (yyyy/mm/dd): Event Date:2016-05-23
Start: 2016-05-23,
Quarantine levels dates (yyyy/mm/dd): First detection: 2017-05-25, End: 2017-07-12
Additional date-related information: The bloom lasted 55 days in Santa Catarina.


Causative organism known: Yes
Causative Species/Genus: Dinobryon sp. (> 800000 cells/L)
DD. cf acuminata
Co-Ocurring Species/Genus: Mesodinium sp. ( cells/L)
Noctiluca sp. ( cells/L)
Chlorophyll concentration, if known: µg/l
Additional bloom information:
Event-related bibliography: Proença, L.A.O.; Schramm, M.A .; Alves, T.P and and A. R. Piola. The extraordinary 2016 autumn DSP outbreak in Santa Catarina, Southern Brazil, explained by large-scale oceanographic processes. In: Proença, L. A. O. and Hallegraeff , G.M.(eds). Marine and Fresh-Water Harmful Algae. Proceedings of the 17th International Conference on Harmful Algae. International Society for the Study of Harmful Algae and Intergovernmental Oceanographic Commission of UNESCO 2017.p42-46

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: Advected
In situ
Growth Comments
Additional Environmental information:

Toxin Assay Information

Species containing the toxin Toxin type Toxin details Max. concentration Assay type
Dinophysis cf acuminata Okadaic Acid Bioassay-Mouse
Kit used: Type of kit used:
Additional information: Higly toxic bloom accessed by MBA acetonic extract.
Economic losses: More than 12 milhon BR (aprox. US 4mi)
Management decision: Preventive closure along the whole Santa Catarina State coast. Closure were extended to Parana and São Paulo
Additional harmful effect information: Despite the ban, some human intoxication were reported due to recreative fishing
Created at 04:07 on 10 Nov 2017
Updated at 04:08 on 10 Nov 2017