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Otolith microchemistry of Nezumia aequalis (Pisces: Macrouridae) from widely different habitats in the Atlantic and Mediterranean

Published online by Cambridge University Press:  12 August 2003

Sarah C. Swan ,
John D.M. Gordon ,
Beatriz Morales-Nin ,
Tracy Shimmield ,
Terrie Sawyer  and
Audrey J. Geffen
Sarah C. Swan
Affiliation:
Scottish Association for Marine Science, Dunstaffnage Marine Laboratory, Oban, Argyll, Scotland, PA37 1QA, UK
John D.M. Gordon
Affiliation:
Scottish Association for Marine Science, Dunstaffnage Marine Laboratory, Oban, Argyll, Scotland, PA37 1QA, UK
Beatriz Morales-Nin
Affiliation:
CSIC-UIB Institut Mediterrani d'Estudis Avançats, Miguel Marqués 21, 07190 Esporles, Spain
Tracy Shimmield
Affiliation:
Scottish Association for Marine Science, Dunstaffnage Marine Laboratory, Oban, Argyll, Scotland, PA37 1QA, UK
Terrie Sawyer
Affiliation:
Scottish Association for Marine Science, Dunstaffnage Marine Laboratory, Oban, Argyll, Scotland, PA37 1QA, UK
Audrey J. Geffen
Affiliation:
University of Liverpool, School of Biological Sciences, Port Erin Marine Laboratory, Port Erin, Isle of Man
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Abstract

Otoliths were obtained from Nezumia aequalis, a small macrourid that is widely distributed throughout the Atlantic and Mediterranean—two very different physical environments. Microchemical analysis of the otoliths was carried out using solution-based inductively coupled plasma mass spectrometry of whole otoliths. Significant differences between fish populations were found for concentrations of the elements Li and Sr. Only 54% of the samples were correctly classified by area using discriminant analysis. Otolith samples from the Reykjanes Ridge were most easily distinguished. The results are discussed in relation to trace element concentrations in the waters of the north-eastern Atlantic Ocean and the Mediterranean Sea.

Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 83 , Issue 4 , August 2003 , pp. 883 - 886
Copyright
2003 Marine Biological Association of the United Kingdom

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