An assessment of de-calcification procedures for 13C and 15N analysis of yellow perch, walleye and Atlantic salmon scales

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The scales of three species of fishes, yellow perch Perca flavescens, walleye Sander vitreus and Atlantic salmon Salmo salar, were acidified and the isotopic signatures were compared to non-acidified scales from the same fishes. No significant acidification effects on either carbon or nitrogen isotope signatures were found. Results contrast with earlier literature findings noting significant acidification effects and suggest acidification tests be undertaken before scales are used for temporal reconstruction of fish food web positions.

Keywords: Atlantic salmon; acidification; fish scales; isotopes; walleye; yellow perch

Document Type: Research Article


Affiliations: 1: Department of Biology, University of Waterloo, 200 University Avenue West, Waterloo, ON, N2L 3G1 Canada 2: Fisheries and Oceans Canada, Science Branch, P. O. Box 5667, St John’s, NL, A1C 5X1 Canada

Publication date: May 1, 2007

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