Journal of Insect Behavior

, Volume 8, Issue 2, pp 219–229 | Cite as

Courtship success and multivariate analysis of sexual selection on morphometric traits inDrosophila buzzatii (Diptera: Drosophilidae)

  • Fabian M. Norry
  • Juan C. Vilardi
  • Juan J. Fanara
  • Esteban Hasson


Using wild-reared flies, we examined sexual selection on five phenotypic traits (thorax length, wing length, wing width, head width, and face width) inDrosophila buzzatii, by scoring copulatory status in nine mass mating cages. Only male face width was identified as a direct target of sexual selection in an analysis of selection gradient, while indirect selection was present on all other studied traits, as expected from their correlations with face width. In contrast to males, there was no indication of selection in females. Nor was there evidence of assortative mating. The suggested direct selection on face width seems to take place during licking behavior of the courtship and might be related to courtship feeding. This study suggests that courtship success gives rise to indirect selection on body size.

Key words

Drosophila sexual selection gradients courtship success 


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Copyright information

© Plenum Publishing Corporation 1995

Authors and Affiliations

  • Fabian M. Norry
    • 1
  • Juan C. Vilardi
    • 1
  • Juan J. Fanara
    • 1
  • Esteban Hasson
    • 1
  1. 1.GIBE, Departamento de Ciencias Biológicas, Facultad de Ciencias Exactas y NaturalesUniversidad de Buenos AiresBuenos AiresArgentina

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