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

49 Scopus citations

Abstract

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
Volume68
Issue number8
DOIs
StatePublished - Aug 2011
Externally publishedYes

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