A Novel Immunofluorescence Flow Cytometry Technique Detects The Expansion Of Brown Tides Caused By Aureoumbra Lagunensis To The Caribbean Sea

dc.contributor.utaustinauthorVillareal, Tracy A.en
dc.creatorKoch, F.en
dc.creatorKang, Y.en
dc.creatorVillareal, Tracy A.en
dc.creatorAnderson, D. M.en
dc.creatorGobler, C. J.en
dc.description.abstractDuring the past 3 decades, brown tides caused by the pelagophytes Aureococcus anophagefferens and Aureoumbra lagunensis have caused ecological and economic damage to coastal ecosystems across the globe. While blooms of A. lagunensis had previously been confined to Texas, in 2012, an expansive brown tide occurred on Florida's East Coast, causing widespread disruption within the Indian River and Mosquito Lagoons and generating renewed interest in this organism. A major impediment to detailed investigations of A. lagunensis in an ecosystem setting has been the absence of a rapid and reliable method for cell quantification. The combination of their small size (3 to 5 mu m) and nondescript extracellular features makes identification and enumeration of these cells with conventional methods a challenge. Here we report the development of an immunological-based flow cytometry method that uses a fluorescently labeled antibody developed against A. lagunensis. This method is species specific, sensitive (detection limit of 1.5 X 10(3) cells ml(-1)), precise (1% relative standard deviation of replicated samples), and accurate (108% +/- 8% recovery of spiked samples) over a wide range of cell concentrations. Furthermore, this method effectively quantifies A. lagunensis in both glutaraldehyde-and formalin-preserved samples, yields a high throughput of samples (similar to 35 samples h(-1)), and is cost-effective, making it an ideal tool for managers and scientists. This method successfully documented the recurrence of a brown tide bloom in Florida in 2013. Bloom densities were highest in June (>2.0 x 10(6) cells ml(-1)) and spanned >60 km from the Ponce de Leon inlet in the northern Mosquito Lagoon south to Titusville in the Indian River Lagoon. Low levels of A. lagunensis cells were found >250 km south of this region. This method also quickly and accurately identified A. lagunensis as the causative agent of a 2013 brown tide bloom in Guantanamo Bay, Cuba, and thus should prove useful for both quantifying the dynamics of ongoing blooms of A. lagunensis as well as documenting new outbreaks of this harmful alga.en
dc.description.departmentMarine Scienceen
dc.description.sponsorshipNOAA ECOHAB Event Responseen
dc.description.sponsorshipNational Science Foundation OCE-1314642en
dc.description.sponsorshipNational Institute of Environmental Health Sciences 1-P01-ES021923-01en
dc.identifier.citationKoch, F., Kang, Y., Villareal, T. A., Anderson, D. M., Gobler, C. J., >A Novel Immunofluorescence Flow Cytometry Technique Detects the Expansion of Brown Tides Caused by Aureoumbra lagunensis to the Caribbean Sea,> Appl. Environ. Microbiol. August 2014 vol. 80 no. 16 4947-4957. doi: 10.1128/AEM.00888-14.en
dc.relation.ispartofserialApplied and Environmental Microbiologyen
dc.rightsAdministrative deposit of works to Texas ScholarWorks: This works author(s) is or was a University faculty member, student or staff member; this article is already available through open access or the publisher allows a PDF version of the article to be freely posted online. The library makes the deposit as a matter of fair use (for scholarly, educational, and research purposes), and to preserve the work and further secure public access to the works of the University.en
dc.subjectharmful algal bloomsen
dc.subjectchrysophyte aureococcus-anophagefferensen
dc.subjectcoastal baysen
dc.subjectlaguna madreen
dc.subjectbiotechnology & applied microbiologyen
dc.titleA Novel Immunofluorescence Flow Cytometry Technique Detects The Expansion Of Brown Tides Caused By Aureoumbra Lagunensis To The Caribbean Seaen

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