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dc.contributor.authorReinardy, Helena
dc.contributor.authorPedersen, Kristine Bondo
dc.contributor.authorNahrgang, Jasmine
dc.contributor.authorFrantzen, Marianne
dc.date.accessioned2020-01-31T13:12:46Z
dc.date.available2020-01-31T13:12:46Z
dc.date.issued2019-03-22
dc.description.abstractIn Norway, mine tailings waste can be deposited by coastal submarine dispersal. Mine tailings slurry includes fine particles <10 µm with elevated levels of metals (e.g., copper, iron) from residual mineral ore. Prolonged suspension of small particles in the water column may bring them into contact with locally spawned pelagic fish eggs, including Atlantic cod, <i>Gadus morhua</i>. Newly fertilized cod embryos were exposed to suspended mine tailings particles up to 3.2 mg/L in flow‐through aquaria for a total of 21 d. Significantly more particles adhered to the surface of the chorion from the high treatment after 11‐d exposure, and dissolved Cu concentrations increased in the water (up to 0.36 ± 0.06 µg/L). There was no adverse effect on embryo mortality but an 8% elevation in larval mortality. There were no differences with treatment on timing of hatching, embryo and larva morphometrics, abnormalities, or cardiac activity. There was a treatment‐dependent up‐regulation of stress marker genes (<i>hspa8, cyp1c1</i>) but no indication of metal‐induced activation of metallothionien (<i>mt</i> gene transcription). Transcription markers for DNA and histone methyltransferases did show treatment‐related up‐regulation, indicative of altered methylation in larvae when developmental methylation patterns are determined, indicating some level of chronic toxicity that may have longer‐term effects.en_US
dc.identifier.citationReinardy H, Pedersen KB, Nahrgang J, Frantzen m. Effects of mine tailings exposure on early life stages of Atlantic cod. Environmental Toxicology and Chemistry. 2019;38(7):1446-1454en_US
dc.identifier.cristinIDFRIDAID 1698472
dc.identifier.doi10.1002/etc.4415
dc.identifier.issn0730-7268
dc.identifier.issn1552-8618
dc.identifier.urihttps://hdl.handle.net/10037/17287
dc.language.isoengen_US
dc.publisherWileyen_US
dc.relation.journalEnvironmental Toxicology and Chemistry
dc.relation.projectIDinfo:eu-repo/grantAgreement/RCN/NORDSATS/195160/Norway/Northern Environmental Waste Management/EWMA/en_US
dc.rights.accessRightsopenAccessen_US
dc.rights.holderCopyright 2019 The Author(s)en_US
dc.subjectVDP::Mathematics and natural science: 400::Zoology and botany: 480::Ecotoxicology: 489en_US
dc.subjectVDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Økotoksikologi: 489en_US
dc.titleEffects of mine tailings exposure on early life stages of Atlantic coden_US
dc.type.versionpublishedVersionen_US
dc.typeJournal articleen_US
dc.typeTidsskriftartikkelen_US
dc.typePeer revieweden_US


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