Ontogenetic and spatial variability in trophic biomarkers of juvenile saffron cod (Eleginus gracilis) from the Beaufort, Chukchi and Bering Seas Public Deposited

http://ir.library.oregonstate.edu/concern/articles/n296x0979

To the best of our knowledge, one or more authors of this paper were federal employees when contributing to this work. This is the publisher’s final pdf. The published article is copyrighted by Springer and can be found at:  http://link.springer.com/journal/300

Descriptions

Attribute NameValues
Creator
Abstract or Summary
  • Climate models indicate the Arctic will undergo dramatic environmental change with forecasted increases in temperature and river runoff. Saffron cod (Eleginus gracilis) is abundant in nearshore waters and appears in the diet of many Arctic sea birds and marine mammals; however, little is known about its early ecology and consequently how they might be affected by environmental changes. We aimed to characterize the mechanisms of spatial and ontogenetic variation in trophic biomarkers (lipid classes, fatty acids and bulk C and N stable isotopes) of saffron cod from the Western Arctic, Chukchi and Bering Seas. Size-standardized analyses showed a significant difference in lipid condition metrics and trophic biomarkers as a function of survey location. Both ontogeny and sampling location played an important role in determining lipid stores with elevated levels in both small offshore juveniles (<55 mm) and larger inshore juveniles (>75 mm). Higher lipid storage in Arctic juveniles was associated with elevated levels of diatom fatty acid markers, but not with nearshore carbon input. Increased lipids were found in age-1 juveniles from Prudhoe Bay in the Western Beaufort that were feeding at a lower trophic level than similarly sized age-0 juveniles from surface trawls in the Bering Sea. The use of otolith annuli revealed two discrete patterns of growth that help explain the trade-offs between energy storage and rapid growth that diverge between the Arctic and Bering Sea. Laboratory temperature-growth experiments confirmed that saffron cod have a eurythermal growth response and are able to store excess lipids at temperatures as high as 20°C.
Resource Type
DOI
Date Available
Date Issued
Citation
  • Copeman, L. A., Laurel, B. J., Boswell, K. M., Sremba, A. L., Klinck, K., Heintz, R. A., ... & Spencer, M. L. (2016). Ontogenetic and spatial variability in trophic biomarkers of juvenile saffron cod (Eleginus gracilis) from the Beaufort, Chukchi and Bering Seas. Polar Biology, 39(6), 1109-1126. doi:10.1007/s00300-015-1792-y
Series
Keyword
Rights Statement
Funding Statement (additional comments about funding)
Publisher
Peer Reviewed
Language
Replaces
Additional Information
  • description.provenance : Approved for entry into archive by Patricia Black(patricia.black@oregonstate.edu) on 2016-07-26T18:37:56Z (GMT) No. of bitstreams: 2 krauserp72457527.zip: 1626905 bytes, checksum: 70c1159f936cfd8402bb94904dcb40ab (MD5) CopemanOntogeneticandSpatialVariability.pdf: 1850040 bytes, checksum: b2a099a1689ee3c63eaced352b68064d (MD5)
  • description.provenance : Submitted by Open Access (openaccess@library.oregonstate.edu) on 2016-07-25T16:10:35Z No. of bitstreams: 1 CopemanOntogeneticandSpatialVariability.pdf: 1850040 bytes, checksum: b2a099a1689ee3c63eaced352b68064d (MD5)
  • description.provenance : Made available in DSpace on 2016-07-26T18:37:56Z (GMT). No. of bitstreams: 2 krauserp72457527.zip: 1626905 bytes, checksum: 70c1159f936cfd8402bb94904dcb40ab (MD5) CopemanOntogeneticandSpatialVariability.pdf: 1850040 bytes, checksum: b2a099a1689ee3c63eaced352b68064d (MD5) Previous issue date: 2016-06

Relationships

In Administrative Set:
Last modified: 07/25/2016

Downloadable Content

Download PDF
Citations:

EndNote | Zotero | Mendeley

Items