title: Toxic Trichodesmium bloom occurrence in the southwestern South Atlantic Ocean.
abstract: Harmful Trichodesmium blooms have been reported on the continental slope of the southwestern South Atlantic Ocean; we sampled six such blooms. The highest saxitoxin concentration was observed where the number of colonies was proportionally greater relative to the total density of trichomes. Trichodesmium blooms are harmful to shrimp larvae and may lead to plankton community mortality. This study is the first record of neurotoxic blooms in the open waters of the South Atlantic.
authors.affiliation: Postgraduate Program in Biological Oceanography, Institute of Oceanography, Federal University of Rio Grande, Av. Italia, km 8, Rio Grande, RS, 96203-900, Brazil; Laboratory of Cyanobacteria and Phycotoxin, Institute of Oceanography, Federal University of Rio Grande, Av. Italia, km 8, Rio Grande, RS, 96203-900, Brazil. Electronic address: amaliadetoni@gmail.com.
authors.forename: Amália Maria
authors.initials: AM
authors.lastname: Sacilotto Detoni
authors.affiliation: Laboratory of Cyanobacteria and Phycotoxin, Institute of Oceanography, Federal University of Rio Grande, Av. Italia, km 8, Rio Grande, RS, 96203-900, Brazil; Postgraduate Program in Physical, Chemical and Geological Oceanography, Institute of Oceanography, Federal University of Rio Grande, Av. Italia, km 8, Rio Grande, RS, 96203-900, Brazil.
authors.forename: Luiza Dy Fonseca
authors.initials: LD
authors.lastname: Costa
authors.affiliation: Laboratory of Cyanobacteria and Phycotoxin, Institute of Oceanography, Federal University of Rio Grande, Av. Italia, km 8, Rio Grande, RS, 96203-900, Brazil; Postgraduate Program in Physical, Chemical and Geological Oceanography, Institute of Oceanography, Federal University of Rio Grande, Av. Italia, km 8, Rio Grande, RS, 96203-900, Brazil.
authors.forename: Lucas Abrão
authors.initials: LA
authors.lastname: Pacheco
authors.affiliation: Laboratory of Cyanobacteria and Phycotoxin, Institute of Oceanography, Federal University of Rio Grande, Av. Italia, km 8, Rio Grande, RS, 96203-900, Brazil.
authors.forename: João Sarkis
authors.initials: JS
authors.lastname: Yunes
mesh_terms: D001267:Atlantic Ocean; D001938:Brazil; D000458:Cyanobacteria / Q000737:chemistry / Q000254:growth & development*; D004784:Environmental Monitoring; D057097:Harmful Algal Bloom; D009498:Neurotoxins / Q000032:analysis / Q000633:toxicity; D012530:Saxitoxin / Q000032:analysis / Q000633:toxicity; D062211:Spatio-Temporal Analysis
chemical_list: D009498:Neurotoxins; D012530:Saxitoxin
keywords: Continental slope; Oceanic bloom; Saxitoxin concentrations; South Atlantic; Trichodesmium