Journal of Insect Behavior

, Volume 8, Issue 6, pp 835–845 | Cite as

Decline in photopositive tendencies with age inDrosophila melanogaster (Diptera: Drosophilidae)

  • E. Le Bourg
  • J. Badia
Article

Abstract

Phototaxis was measured in young, middle-aged, and oldDrosophila melanogaster flies of both sexes. The apparatus allowed us to measure the tendency to go toward light, independently of the time needed to do so; under such conditions, phototaxis is dissociated from locomotor activity. The percentage of photopositive flies decreased slightly with age (93.96, 80.17, and 78.97%, respectively, in young, middle-aged, and old flies). Results are discussed in connection with previous data for which the tendency to go toward light and the time to do so were not dissociated.

Key words

aging Drosophila melanogaster phototaxis locomotor activity 

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Copyright information

© Plenum Publishing Corporation 1995

Authors and Affiliations

  • E. Le Bourg
    • 1
  • J. Badia
    • 2
  1. 1.Laboratoire d'Ethologie et de Psychologie Animale, URA CNRS No. 1837Université Paul SabatierToulouse CedexFrance
  2. 2.Station de Biométrie et Intelligence ArtificielleINRACastanet-Tolosan CedexFrance

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