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Aging in Brachionus plicatilis: The evolution of swimming as a function of age at two different calcium concentrations

  • Anne Luciani
  • Jean-Luc Chassé
  • Pierre Clément
Part of the Developments in Hydrobiology book series (DIHY, volume 14)

Abstract

The swimming movements of young, middle-aged and old Brachionus plicatilis females, raised in calcium-sufficient and calcium-deficient culture media were recorded automatically. Computer analysis and statistical treatment of the results show that:
  1. 1)

    The middle-aged females swim faster than the young and the old females. In comparison to the middle-aged and the young, old females turn less often and nearly always toward the right, and they do not travel as far from their point of departure as the others.

     
  2. 2)

    When the concentration of calcium in the medium is nearly zero, the swimming speed of middle-aged and old females is slower than that of middle-aged and old females raised in the presence of sufficient amounts of calcium.

     

Keywords

rotifers aging Brachionus plicatilis swimming behaviour calcium automatic recording computer analysis 

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Copyright information

© Dr W. Junk Publishers, The Hague 1983

Authors and Affiliations

  • Anne Luciani
    • 1
  • Jean-Luc Chassé
    • 2
  • Pierre Clément
    • 1
  1. 1.Laboratoire d’Histologie et de Biologie tissulaire, CNRS: LA 244, RCP 657Université Lyon IVilleurbanneFrance
  2. 2.Laboratoire de Biométrie, CNRS: LA 243Université Lyon IVilleurbanneFrance

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