A new method to reconstruct fish diet and movement patterns from δ 13 C values in otolith amino acids

Kelton W. McMahon, Marilyn L. Fogel, Beverly J. Johnson, Leah A. Houghton, Simon R. Thorrold, Bronwyn Gillanders

Research output: Contribution to journalArticlepeer-review

60 Scopus citations


Fish ecologists have used geochemical values in otoliths to examine habitat use, migration, and population connectivity for decades. However, it remains difficult to determine an unambiguous dietary δ 13C signature from bulk analysis of otolith. Studies to date have focused on the aragonite component of otoliths with less attention paid to the organic fraction. We describe the application of compound-specific stable isotope analysis (SIA) to analyze amino acid (AA) δ 13C values from small amounts (
Original languageEnglish (US)
Pages (from-to)1330-1340
Number of pages11
JournalCanadian Journal of Fisheries and Aquatic Sciences
Issue number8
StatePublished - Aug 2011
Externally publishedYes

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01
Acknowledged KAUST grant number(s): USA 00002, KSA 00011
Acknowledgements: The authors thank M. Berumen for field assistance and the crew of Dream Divers, Jeddah, Saudi Arabia, for boat and dive operation assistance. The site map was created by C. Braun. This research was based on work supported by awards USA 00002 and KSA 00011 made by King Abdullah University of Science and Technology (KAUST). Additional funding was provided by Woods Hole Oceanographic Institution and an International Society for Reef Studies - Ocean Conservancy Coral Reef Fellowship. K. McMahon received support from the National Science Foundation Graduate Research Fellowship Program.
This publication acknowledges KAUST support, but has no KAUST affiliated authors.


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