Assessment of water quality in coastal waters of Fernando de Noronha, Brazil : biomarker analyses in Amphistegina lessonii

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dc.contributor.authorde Freitas Prazeres, Martina
dc.contributor.authorEslava Martins, Samantha
dc.contributor.authorBianchini, Adalto
dc.date.accessioned2013-10-24T13:00:16Z
dc.date.available2013-10-24T13:00:16Z
dc.date.issued2012
dc.description.abstractSymbiont-bearing foraminiferal assemblages from reef environments have proven useful as ecological indicators for water quality. Studies with other organisms have utilized cellular biomarkers to elucidate mechanisms of stress response. Our goal was to combine these approaches, focusing on populations of the symbiont-bearing foraminifer Amphistegina lessonii from Fernando de Noronha Archipelago (northeastern Brazil). Reef-rubble samples containing A. lessonii were collected at five sampling sites on the leeward side of the main island. Three sites were located inside and two outside the Fernando de Noronha National Marine Park (FNNMP) area. Foraminifers were evaluated regarding their density, degree of bleaching, antioxidant capacity against peroxyl radicals (ACAP), lipid peroxidation (LPO), protein carbonylation (PC), and concentrations of metallothioneinlike proteins (MTs). Densities of A. lessonii were lower at sites located outside the FNNMP, compared with those inside the FNNMP, where the maximum average was 159±29 individuals/100 cm2. In individuals from sites located outside FNNMP, bleaching frequency reached 25%, though ,2%; at FNNMP sites (,1.8%;). ACAP was higher (two-fold) in individuals collected at the FNNMP sites, which showed lower LPO and PC levels. MTs concentration did not differ significantly among sites. Zinc, copper, and lead concentrations were very high at stations located outside FNNMP. Dissolved organic carbon concentration was high at all sampling sites. Redundancy analysis revealed a strong correlation between biomarkers and water quality among sampling sites. These results show that the biomarker approach would be effective in identifying impacted areas and underlying causes, providing a reliable diagnostic for environment health.en
dc.formatTexten
dc.format.extent1 digital file (p. 56-65)en
dc.format.mimetypeApplication/pdf
dc.identifier.citationde Freitas Prazeres, M., Eslava Martins, S., & Bianchini, A. (2012). Assessment of water quality in coastal waters of Fernando de Noronha, Brazil: biomarker analyses in Amphistegina lessonii. Journal of Foraminiferal Research, 42(1), 56-65.en
dc.identifier.issn0096-1191
dc.identifier.urihttp://hdl.handle.net/10625/52017
dc.language.isoen
dc.publisherGeoScienceWorlden
dc.subjectBIOMARKER ANALYSESen
dc.subjectAMPHISTEGINA LESSONIIen
dc.subjectWATER QUALITYen
dc.subjectBRAZILen
dc.subjectBIOLOGICAL MARKERSen
dc.subjectENVIRONMENTAL HEALTHen
dc.titleAssessment of water quality in coastal waters of Fernando de Noronha, Brazil : biomarker analyses in Amphistegina lessoniien
dc.typeJournal Article (peer-reviewed)en
idrc.copyright.holderCushman Foundation for Foraminiferal Research
idrc.dspace.accessIDRC Onlyen
idrc.noaccessDue to copyright restrictions the full text of this research output is not available in the IDRC Digital Library or by request from the IDRC Library. / Compte tenu des restrictions relatives au droit d'auteur, le texte intégral de cet extrant de recherche n'est pas accessible dans la Bibliothèque numérique du CRDI, et il n'est pas possible d'en faire la demande à la Bibliothéque du CRDI.en
idrc.project.componentnumber104519003
idrc.project.componentnumber104519011
idrc.project.number104519
idrc.project.titleInternational Research Chairs Initiative (IRCI)en
idrc.recordsserver.bcsnumberIC01-3412-181
idrc.rims.adhocgroupIDRC SUPPORTEDen

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IDRC Research Results / Résultats de recherches du CRDI
2010-2019 / Années 2010-2019
Battling pollution in coastal areas / Lutter contre la pollution dans les zones côtières