Acute waterborne copper toxicity to the euryhaline copepod Acartia tonsa at different salinities : influence of natural freshwater and marine dissolved organic matter

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dc.contributor.authorCarvalho Rodrigues Monteiro, Sandra
dc.contributor.authorLopes Leães Pinho, Grasiela
dc.contributor.authorHoffmann, Karine
dc.contributor.authorBarcarolli, Indianara Fernanda
dc.contributor.authorBianchini, Adalto
dc.date.accessioned2013-10-23T18:09:11Z
dc.date.available2013-10-23T18:09:11Z
dc.date.copyright2013
dc.date.issued2013
dc.description.abstractThe influence of natural dissolved organic matter (DOM) on acute waterborne Cu toxicity was evaluated in the euryhaline copepod Acartia tonsa at 3 different water salinities. Three sources of freshwater DOM (extracted by reverse osmosis) and 2 sources of marine DOM (extracted using a solid-phase technique) were used. Artificial salt water was used to prepare the experimental media. Different combinations of Cu concentrations and DOM sources and concentrations were tested at salinities of 5, 15, and 30 ppt. Toxicity data (48-h median lethal concentration [LC50] values) were calculated based on dissolved Cu concentrations. In a broad view, data showed that increasing salinity was protective against the acute waterborne Cu toxicity. In general, Cu toxicity was also lower in the presence than in the absence of DOM. Toxicity (48-h LC50) values from all treatments at the same salinity showed a positive linear relationship with the dissolved organic carbon (DOC). Thus, the protective effect of DOM against the acute Cu toxicity seems to be dependent mainly on the DOM concentration. However, it seems also to be dependent to some extent on the source of DOM used. In summary, findings reported in the present study clearly indicate that both salinity and DOM (source and concentration) should be taken into account in the development of an estuarine version of the biotic ligand model.en
dc.formatTexten
dc.format.extent1 digital file (p. 1412–1419)en
dc.format.mimetypeApplication/pdf
dc.identifier.citationCarvalho Rodrigues Monteiro, S., Lopes Leães Pinho, G., Hoffmann, K., Barcarolli, I.F., & Bianchini, A. (2013). Acute waterborne copper toxicity to the euryhaline copepod Acartia tonsa at different salinities: influence of natural freshwater and marine dissolved organic matter. Environmental Toxicology and Chemistry, 32(6), 1412–1419.doi:10.1002/etc.2197en
dc.identifier.urihttp://hdl.handle.net/10625/52014
dc.language.isoen
dc.publisherSETAC Pressen
dc.subjectACARTIA TONSAen
dc.subjectACUTE TOXICITYen
dc.subjectCOPPERen
dc.subjectNATURAL ORGANIC MATTERen
dc.subjectSALINITYen
dc.titleAcute waterborne copper toxicity to the euryhaline copepod Acartia tonsa at different salinities : influence of natural freshwater and marine dissolved organic matteren
dc.typeJournal Article (peer-reviewed)en
idrc.copyright.holderSETAC
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.bcsnumberIC01-3412-178
idrc.rims.adhocgroupIDRC SUPPORTEDen

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