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    • Larval Arctic cod (Boreogadus saida) exhibit stronger developmental and physiological responses to temperature than to elevated pCO2 in laboratory experiment studies from 2023-03-09 to 2023-05-15 (NCEI Accession 0306528)

    Metadata Updated: December 1, 2025

    This dataset contains laboratory experiment data that were collected to examine the effects of temperature and elevated pCO2 on the developmental and physiological responses of larval Arctic cod (Boregogadus saida). High-latitude ecosystems are simultaneously warming and acidifying under ongoing climate change. Arctic cod are a key species in the Arctic Ocean and have demonstrated sensitivity to ocean warming and acidification as adults and embryos, but their larval sensitivity to the combined stressors is unknown. In a laboratory multi-stressor experiment, larval Arctic cod were exposed to a combination of three temperatures (1.8, 5 and 7.3°C) and two carbon dioxide (pCO2) levels (ambient: 330 μatm, high: 1470 μatm) from hatching to 6-weeks of growth. Mortality rates were highest at 7.3°C (5% day-1); however, both growth and morphometric-based condition were also highest at this temperature. When these metrics were assessed via a mortality: growth (M:G) ratio, 5°C appeared to be an optimal temperature for net population biomass, as faster growth at 7.3°C did not fully compensate for higher mortality. In contrast, although morphometric-based condition was lowest at 1.8°C, lipid-based condition was highest, which may reflect prioritization of lipid storage at cold temperatures. The capacity of larval Arctic cod to acclimate to a range of temperatures was exhibited by two lipid-based indicators of membrane fluidity, including a ratio of unsaturated to saturated fatty acids and a ratio of polar lipids to sterols. The effects of elevated pCO2 were subtle, as well as temperature- and metric dependent. When exposed to elevated pCO2 levels, Arctic cod at 1.8°C exhibited signs of lipid dysregulation, suggesting potential interference with membrane acclimation; larvae at 5°C were in lower morphometric-based condition; and larvae at 7.3°C had higher activity eicosanoid substrates, indicating possible physiological stress. Overall, Arctic cod physiological response to temperature variation was more pronounced than their response to elevated pCO2. Future projections of pCO2 effects on Arctic cod health in a warming ecosystem will need to consider the complexity of temperature-dependence and the specificity of multiple physiological responses.

    Access & Use Information

    License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

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    Dates

    Metadata Date 2025-11-29T08:09:21Z
    Metadata Created Date August 1, 2025
    Metadata Updated Date December 1, 2025
    Reference Date(s) July 24, 2025 (publication)
    Frequency Of Update asNeeded

    Metadata Source

    Harvested from NOAA/NESDIS/ncei/accessions

    Other Data Resources

    Graphic Preview

    Preview graphic

    Additional Metadata

    Resource Type Nongeographicdataset
    Metadata Date 2025-11-29T08:09:21Z
    Metadata Created Date August 1, 2025
    Metadata Updated Date December 1, 2025
    Reference Date(s) July 24, 2025 (publication)
    Responsible Party (Point of Contact)
    Contact Email
    Guid gov.noaa.nodc:0306528
    Access Constraints Cite as: Slesinger, Emily; Copeman, Louise A.; Laurel, Benjamin J.; Hicks, Mary Beth R.; Iseri, Paul J.; Stowell, Michelle A.; Hurst, Thomas P. (2025). Larval Arctic cod (Boreogadus saida) exhibit stronger developmental and physiological responses to temperature than to elevated pCO2 in laboratory experiment studies from 2023-03-09 to 2023-05-15 (NCEI Accession 0306528). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.25921/thwf-6s28. Accessed [date]., Use liability: NOAA and NCEI cannot provide any warranty as to the accuracy, reliability, or completeness of furnished data. Users assume responsibility to determine the usability of these data. The user is responsible for the results of any application of this data for other than its intended purpose.
    Bbox East Long -124.043955
    Bbox North Lat 44.621316
    Bbox South Lat 44.621316
    Bbox West Long -124.043955
    Coupled Resource
    Frequency Of Update asNeeded
    Graphic Preview Description Preview graphic
    Graphic Preview File https://www.ncei.noaa.gov/access/metadata/landing-page/bin/gfx?id=gov.noaa.nodc:0306528
    Graphic Preview Type PNG
    Harvest Object Id a2b894ea-8e1e-4054-913c-d4912aadb48c
    Harvest Source Id c084a438-6f6b-470d-93e0-16aeddb9f513
    Harvest Source Title NOAA/NESDIS/ncei/accessions
    Licence accessLevel: Public
    Lineage
    Metadata Language eng
    Metadata Type geospatial
    Old Spatial {"type": "Point", "coordinates": [-124.043955, 44.621316]}
    Progress completed
    Spatial Data Service Type
    Spatial Reference System
    Spatial Harvester True
    Temporal Extent Begin 2023-03-09
    Temporal Extent End 2023-05-15

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