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dc.contributor.authorNahrgang, Jasmine
dc.contributor.authorDubourg, Paul
dc.contributor.authorFrantzen, marianne
dc.contributor.authorStorch, Daniela
dc.contributor.authorDahlke, Flemming
dc.contributor.authorMeador, James P.
dc.date.accessioned2017-03-10T09:47:30Z
dc.date.available2017-03-10T09:47:30Z
dc.date.issued2016-08-06
dc.description.abstractIncreasing anthropogenic activities in the Arctic represent an enhanced threat for oil pollution in a marine environment that is already at risk from climate warming. In particular, this applies to species with free-living pelagic larvae that aggregate in surface waters and under the sea ice where hydrocarbons are likely to remain for extended periods of time due to low temperatures. We exposed the positively buoyant eggs of polar cod (Boreogadus saida), an arctic keystone species, to realistic concentrations of a crude oil water-soluble fraction (WSF), mimicking exposure of eggs aggregating under the ice to oil WSF leaking from brine channels following encapsulation in ice. Total hydrocarbon and polycyclic aromatic hydrocarbon levels were in the ng/L range, with most exposure concentrations below the limits of detection throughout the experiment for all treatments. The proportion of viable, free-swimming larvae decreased significantly with dose and showed increases in the incidence and severity of spine curvature, yolk sac alterations and a reduction in spine length. These effects are expected to compromise the motility, feeding capacity, and predator avoidance during critical early life stages for this important species. Our results imply that the viability and fitness of polar cod early life stages is significantly reduced when exposed to extremely low and environmentally realistic levels of aqueous hydrocarbons, which may have important implications for arctic food web dynamics and ecosystem functioning.en_US
dc.descriptionSource: <a href=http://dx.doi.org/10.1016/j.envpol.2016.07.044>doi: 10.1016/j.envpol.2016.07.044</a>en_US
dc.identifier.citationNahrgang, J. et al. Early life stages of an arctic keystone species (Boreogadus saida) show high sensitivity to a water-soluble fraction of crude oil. Environmental Pollution. 2016;218:605-614en_US
dc.identifier.issn0269-7491
dc.identifier.issn1873-6424
dc.identifier.otherFRIDAID 1406774
dc.identifier.other10.1016/j.envpol.2016.07.044
dc.identifier.urihttp://hdl.handle.net/10037/10533
dc.language.isoengen_US
dc.publisherElsevieren_US
dc.relation.journalEnvironmental Pollution
dc.relation.projectIDinfo:eu-repo/grantAgreement/RCN/NORDSATS/195160/Norway/Northern Environmental Waste Managementen_US
dc.relation.projectIDinfo:eu-repo/grantAgreement/RCN/FRIMEDBIO/214184/Norway/Polar cod, lipid metabolism and disruption by polycyclic aromatic hydrocarbonsen_US
dc.rights.accessRightsopenAccessen_US
dc.subjectVDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480en_US
dc.subjectVDP::Mathematics and natural science: 400::Zoology and botany: 480en_US
dc.subjectVDP::Landbruks- og Fiskerifag: 900::Fiskerifag: 920en_US
dc.subjectVDP::Agriculture and fishery disciplines: 900::Fisheries science: 920en_US
dc.titleEarly life stages of an arctic keystone species (Boreogadus saida) show high sensitivity to a water-soluble fraction of crude oilen_US
dc.typeJournal articleen_US
dc.typeTidsskriftartikkelen_US
dc.typePeer revieweden_US


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