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Halastatic demineralization in the vertebrae of Atlantic salmon, during their spawning migration

Authors

  • A. Kacem,

    Corresponding author
    1. Unité 0403 ‘Biodiversité et dynamique des Communautés aquatiques’, Département des Milieux et peuplements aquatiques, Muséum National d'Histoire Naturelle, 43 rue Cuvier, 75231 Paris Cédex 05, France and
      †INRA SCRIBE, Campus de Beaulieu, 35042 Rennes, France. Tel.: +33 2 23 48 50 10; fax: +33 2 23 48 50 20; email: akacem@ beaulieu.rennes.inra.fr
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  • F. J. Meunier

    1. Unité 0403 ‘Biodiversité et dynamique des Communautés aquatiques’, Département des Milieux et peuplements aquatiques, Muséum National d'Histoire Naturelle, 43 rue Cuvier, 75231 Paris Cédex 05, France and
    2. Équipe de Recherche ‘Formations Squelettiques’, UMR CNRS 8570, Laboratoire d'Anatomie Comparée, Université D. Diderot, 75251 Paris Cédex 05, France
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†INRA SCRIBE, Campus de Beaulieu, 35042 Rennes, France. Tel.: +33 2 23 48 50 10; fax: +33 2 23 48 50 20; email: akacem@ beaulieu.rennes.inra.fr

Abstract

There was a significant decrease (c. 10%) in the mineralization of the vertebrae, determined by analysis of quantitative microradiographs, of both sexes of Atlantic salmon Salmo salar during their ascending spawning migration. The decrease was hypothesized to be the result of halastatic demineralization, i.e. the removal of mineral substance with no degradation of the organic matrix of the bone.

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