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dc.contributor.authorHansen, Bjørn Henrik
dc.contributor.authorHallmann, Anna
dc.contributor.authorAltin, Dag
dc.contributor.authorJenssen, Bjørn Munro
dc.contributor.authorCiesielski, Tomasz Maciej
dc.date.accessioned2017-10-10T11:38:58Z
dc.date.available2017-10-10T11:38:58Z
dc.date.created2017-10-09T11:19:25Z
dc.date.issued2017-08-04
dc.identifier.citationJournal of Toxicology and Environmental Health, Part A nb_NO
dc.identifier.issn1528-7394
dc.identifier.urihttp://hdl.handle.net/11250/2459438
dc.description.abstractUse of hydrogen peroxide (H2O2) for removal of salmon lice in the aquaculture industry has created concern that non-target organisms might be affected during treatment scenarios. The aim of the present study was to examine the potential for H2O2 to produce oxidative stress and reduce survival in one of the most abundant zooplankton species in Norwegian coastal areas, the copepod Calanus finmarchicus. Copepods were subjected to two 96-hr tests: (1) acute toxicity test where mortality was determined and (2) treated copepods were exposed to concentrations below the No Observed Effect Concentration (0.75 mg/L) H2O2 and analyzed for antioxidant enzyme activities, as well as levels of glutathione (GSH) and malondialdehyde (MDA). Compared to available and comparable LC50 values from the literature, our results suggest that C. finmarchicus is highly sensitive to H2O2. However, 96-hr exposure of C. finmarchicus to 0.75 mg H2O2/L did not significantly affect the antioxidant systems even though the concentration is just below the level where mortality is expected. Data suggest that aqueous H2O2 exposure did not cause cellular accumulation with associated oxidative stress, but rather produced acute effects on copepod surface (carapace). Further investigation is required to ensure that aqueous exposure during H2O2 treatment in salmon fish farms does not exert adverse effects on local non-target crustacean species and populations. In particular, studies on copepod developmental stages with a more permeable carapace are warranted.nb_NO
dc.language.isoengnb_NO
dc.publisherTaylor & Francis Onlinenb_NO
dc.rightsNavngivelse-Ikkekommersiell-DelPåSammeVilkår 4.0 Internasjonal*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-sa/4.0/deed.no*
dc.subjectSuperoxide dismutasenb_NO
dc.subjectcatalasenb_NO
dc.subjectglutathione peroxidasenb_NO
dc.subjectglutathionenb_NO
dc.subjectglutathione S-transferasenb_NO
dc.subjectlipid peroxidationnb_NO
dc.subjectH2O2nb_NO
dc.titleAcute hydrogen peroxide (H2O2) exposure does not cause oxidative stress in late-copepodite stage of Calanus finmarchicusnb_NO
dc.typeJournal articlenb_NO
dc.typePeer reviewednb_NO
dc.description.versionacceptedVersionnb_NO
dc.rights.holderaccepted version the Authorsnb_NO
dc.source.journalJournal of Toxicology and Environmental Healthnb_NO
dc.identifier.doi10.1080/15287394.2017.1352182
dc.identifier.cristin1503294
cristin.unitcode7566,6,0,0
cristin.unitnameMiljøteknologi
cristin.ispublishedtrue
cristin.fulltextpostprint
cristin.qualitycode1


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Navngivelse-Ikkekommersiell-DelPåSammeVilkår 4.0 Internasjonal
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