Toxin composition of the 2016 Microcystis aeruginosa bloom in the St. Lucie Estuary, Florida

A bloom of the cyanobacteria, Microcystis aeruginosa occurred in the St. Lucie Estuary during the summer of 2016, stimulated by the release of waters from Lake Okeechobee. This cyanobacterium produces the microcystins, a suite of heptapeptide hepatotoxins. The toxin composition of the bloom was anal...

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Bibliographic Details
Published inToxicon (Oxford) Vol. 138; pp. 169 - 172
Main Authors Oehrle, Stuart, Rodriguez-Matos, Marliette, Cartamil, Michael, Zavala, Cristian, Rein, Kathleen S.
Format Journal Article
LanguageEnglish
Published England Elsevier Ltd 01.11.2017
Subjects
Algal bloom
Bacterial Toxins - analysis
Biomass
Cyanobacteria
Estuaries
Florida
Harmful Algal Bloom
Microcystins
Microcystins - analysis
Microcystis
Microcystis - chemistry
Saline Waters - chemistry
Florida
Algal bloom
Microcystis
Cyanobacteria
Microcystins
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Summary:A bloom of the cyanobacteria, Microcystis aeruginosa occurred in the St. Lucie Estuary during the summer of 2016, stimulated by the release of waters from Lake Okeechobee. This cyanobacterium produces the microcystins, a suite of heptapeptide hepatotoxins. The toxin composition of the bloom was analyzed and was compared to an archived bloom sample from 2005. Microcystin-LR was the most abundant toxin with lesser amounts of microcystin variants. Nodularin, cylindrospermopsin and anatoxin-a were not detected. [Display omitted] •Eight microcystin variants were identified from the 2016 bloom of Microcystis aeruginosa in the St. Lucie Estuary.•The most abundant toxin was microsystin-LR followed by-LA.•Nodularin, cylindrospermopsin and anatoxin-a were not detected.
ISSN:0041-0101
1879-3150
DOI:10.1016/j.toxicon.2017.09.005