Regional variation in the microhardness and mineralization of vertebrae from brown and rainbow trout

Authors

  • H. Paxton,

    1. Centre for Biomimetics, The University of Reading, School of Construction Management and Engineering, Engineering Building, Whiteknights, Reading, RG6 6AY, U.K.
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    • *

      Present address: Department of Animal Care and Veterinary Nursing, Berkshire College of Agriculture, Hall Place, Burchetts Green, Maidenhead, Berkshire, SL6 6QR, U.K.

  • R. H. C. Bonser,

    Corresponding author
    1. Centre for Biomimetics, The University of Reading, School of Construction Management and Engineering, Engineering Building, Whiteknights, Reading, RG6 6AY, U.K.
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  • K. Winwood

    1. Centre for Biomimetics, The University of Reading, School of Construction Management and Engineering, Engineering Building, Whiteknights, Reading, RG6 6AY, U.K.
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    •  ‡

      Present address: Institute for Biophysical and Clinical Research into Human Movement, Manchester Metropolitan University, Hassall Road, Alsager, Cheshire ST7 2HL, U.K.


†Tel. +44 (0) 118 378 5219; fax.: +44 (0) 118 931 3327; email: r.h.c.bonser@reading.ac.uk

Abstract

Regional variation in properties of vertebral bone from brown Salmo trutta and rainbow trout Oncorhychus mykiss were explored by using microhardness tests. Statistically-significant positive correlations were identified between the microhardness of bone and its mineral content. In both brown and rainbow trout, the vertebrae from the caudal region were harder than those of the trunk region. There was a significant difference between the species; microhardness of bone from vertebrae of rainbow trout was greater than those from brown trout.

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