Effects of elevated carbon dioxide on Pacific cod larvae size and behavior from laboratory experiment studies from 2015-02-12 to 2016-07-02 (NCEI Accession 0202775)

Metadata Updated: March 26, 2021

This archival package contains data from a multi-faceted analysis of the sensitivity of Pacific cod larvae to elevated carbon dioxide (CO2) levels based on laboratory experiment studies. Fish behavior in a horizontal light gradient was used to evaluate the sensitivity of behavioral phototaxis in 4–5 week old cod larvae. Fish at elevated CO2 levels (~1500 and 2250 μatm) exhibited a stronger phototaxis (moved more quickly to regions of higher light levels) than fish at ambient CO2 levels (~600μatm). In an independent experiment, we examined the effects of elevated CO2 levels on growth of larval Pacific cod over the first 5 weeks of life under two different feeding treatments. Fish exposed to elevated CO2 levels (~1700μatm) were smaller and had lower lipid levels at 2 weeks of age than fish at low (ambient) CO2 levels (~500μatm). However, by 5 weeks of age, this effect had reversed: fish reared at elevated CO2 levels were slightly (but not significantly) larger and had higher total lipid levels and storage lipids than fish reared at low CO2. Fatty acid composition differed significantly between fish reared at high and low CO2 levels (p less than 0.01) after 2 weeks of feeding, but this effect diminished by week 5. Effects of CO2 on FA composition of the larvae differed between the two diets, an effect possibly related more to dietary equilibrium and differential lipid class storage than a fundamental effect of CO2 on fatty acid metabolism. These experiments point to a stage-specific sensitivity of Pacific cod to the effects of OA. Further understanding of these effects will be required to predict the impacts on production of Pacific cod fisheries.

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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 2021-02-19T23:32:59Z
Metadata Created Date December 4, 2020
Metadata Updated Date March 26, 2021
Reference Date(s) October 5, 2019 (publication)
Frequency Of Update asNeeded

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Additional Metadata

Resource Type Nongeographicdataset
Metadata Date 2021-02-19T23:32:59Z
Metadata Created Date December 4, 2020
Metadata Updated Date March 26, 2021
Reference Date(s) October 5, 2019 (publication)
Responsible Party (Point of Contact)
Contact Email
Guid gov.noaa.nodc:0202775
Access Constraints Cite as: Hurst, Thomas P.; Copeman, Louise A.; Haines, Scott A.; Meredith, Summer D.; Daniels, Kamilya; Hubbard, Kalyn M. (2019). Effects of elevated carbon dioxide on Pacific cod larvae size and behavior from laboratory experiment studies from 2015-02-12 to 2016-07-02 (NCEI Accession 0202775). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.25921/y8xm-3306. 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 -122.76
Bbox North Lat 48.135
Bbox South Lat 48.135
Bbox West Long -122.76
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:0202775
Graphic Preview Type PNG
Licence accessLevel: Public
Metadata Language eng
Metadata Type geospatial
Old Spatial {"type": "Point", "coordinates": [-122.76, 48.135]}
Progress completed
Spatial Data Service Type
Spatial Reference System
Spatial Harvester True
Temporal Extent Begin 2015-02-12
Temporal Extent End 2016-07-02

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