Early life stages of an arctic keystone species (Boreogadus saida) show high sensitivity to a water-soluble fraction of crude oil
Increasing 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 h...
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Online Access: | https://epic.awi.de/id/eprint/41587/ https://doi.org/10.1016/j.envpol.2016.07.044 https://hdl.handle.net/10013/epic.48456 |
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ftawi:oai:epic.awi.de:41587 2023-05-15T14:26:39+02:00 Early life stages of an arctic keystone species (Boreogadus saida) show high sensitivity to a water-soluble fraction of crude oil Nahrgang, Jasmine Dubourg, Paul Frantzen, Marianne Storch, Daniela Dahlke, Flemming Meador, James P. 2016 https://epic.awi.de/id/eprint/41587/ https://doi.org/10.1016/j.envpol.2016.07.044 https://hdl.handle.net/10013/epic.48456 unknown Nahrgang, J. , Dubourg, P. , Frantzen, M. , Storch, D. orcid:0000-0003-3090-7554 , Dahlke, F. and Meador, J. P. (2016) Early life stages of an arctic keystone species (Boreogadus saida) show high sensitivity to a water-soluble fraction of crude oil , Environmental Pollution . doi:10.1016/j.envpol.2016.07.044 <https://doi.org/10.1016/j.envpol.2016.07.044> , hdl:10013/epic.48456 EPIC3Environmental Pollution, ISSN: 02697491 Article isiRev 2016 ftawi https://doi.org/10.1016/j.envpol.2016.07.044 2021-12-24T15:41:51Z Increasing 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. Article in Journal/Newspaper Arctic Arctic Boreogadus saida polar cod Sea ice Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Arctic Environmental Pollution 218 605 614 |
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Open Polar |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
op_collection_id |
ftawi |
language |
unknown |
description |
Increasing 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. |
format |
Article in Journal/Newspaper |
author |
Nahrgang, Jasmine Dubourg, Paul Frantzen, Marianne Storch, Daniela Dahlke, Flemming Meador, James P. |
spellingShingle |
Nahrgang, Jasmine Dubourg, Paul Frantzen, Marianne Storch, Daniela Dahlke, Flemming Meador, James P. Early life stages of an arctic keystone species (Boreogadus saida) show high sensitivity to a water-soluble fraction of crude oil |
author_facet |
Nahrgang, Jasmine Dubourg, Paul Frantzen, Marianne Storch, Daniela Dahlke, Flemming Meador, James P. |
author_sort |
Nahrgang, Jasmine |
title |
Early life stages of an arctic keystone species (Boreogadus saida) show high sensitivity to a water-soluble fraction of crude oil |
title_short |
Early life stages of an arctic keystone species (Boreogadus saida) show high sensitivity to a water-soluble fraction of crude oil |
title_full |
Early life stages of an arctic keystone species (Boreogadus saida) show high sensitivity to a water-soluble fraction of crude oil |
title_fullStr |
Early life stages of an arctic keystone species (Boreogadus saida) show high sensitivity to a water-soluble fraction of crude oil |
title_full_unstemmed |
Early life stages of an arctic keystone species (Boreogadus saida) show high sensitivity to a water-soluble fraction of crude oil |
title_sort |
early life stages of an arctic keystone species (boreogadus saida) show high sensitivity to a water-soluble fraction of crude oil |
publishDate |
2016 |
url |
https://epic.awi.de/id/eprint/41587/ https://doi.org/10.1016/j.envpol.2016.07.044 https://hdl.handle.net/10013/epic.48456 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Arctic Boreogadus saida polar cod Sea ice |
genre_facet |
Arctic Arctic Boreogadus saida polar cod Sea ice |
op_source |
EPIC3Environmental Pollution, ISSN: 02697491 |
op_relation |
Nahrgang, J. , Dubourg, P. , Frantzen, M. , Storch, D. orcid:0000-0003-3090-7554 , Dahlke, F. and Meador, J. P. (2016) Early life stages of an arctic keystone species (Boreogadus saida) show high sensitivity to a water-soluble fraction of crude oil , Environmental Pollution . doi:10.1016/j.envpol.2016.07.044 <https://doi.org/10.1016/j.envpol.2016.07.044> , hdl:10013/epic.48456 |
op_doi |
https://doi.org/10.1016/j.envpol.2016.07.044 |
container_title |
Environmental Pollution |
container_volume |
218 |
container_start_page |
605 |
op_container_end_page |
614 |
_version_ |
1766299932825747456 |