Female choice and manipulations of forceps size and symmetry in the European earwig Forficula auricularia L

Joseph Leopold Tomkins, LW Simmons

Research output: Contribution to journalArticlepeer-review

56 Citations (Scopus)

Abstract

The size and asymmetry of male secondary sexual traits are believed to convey reliable information to females concerning the quality of potential mates. Experimental manipulations of male sexual traits provide a powerful approach to the study of preference evolution. Nevertheless, the majority of studies rely on correlational evidence for selection acting on secondary sexual traits. Here we report that, in three of four populations of the European earwig, Forficula auricularia, females mated sooner with males with longer forceps although there was no female preference based on forceps asymmetry. We isolated the potentially confounding influences of forceps length and asymmetry by independently manipulating each trait. Manipulations of forceps length confirmed that females preferred males with longer forceps. However, manipulations of asymmetry revealed that although females pay attention to forceps condition, they show no preferences based on asymmetry. No relationships were found between the length and asymmetry of forceps in field populations, and there were no differences in rendition between symmetrical and asymmetrical males. Our results are consistent; with the notion that female choice has contributed to the sexual dimorphism in earwig forceps. However, they refute the notion that fluctuating asymmetry plays a role in sexual selection. (C) 1998 The Association for the Study of Animal Behaviour.

Original languageEnglish
Pages (from-to)347-356
Number of pages10
JournalAnimal Behaviour
Volume56
Publication statusPublished - Aug 1998

Keywords

  • MALE SEXUAL ORNAMENTS
  • SWALLOW HIRUNDO-RUSTICA
  • FLUCTUATING ASYMMETRY
  • MATING SUCCESS
  • DEVELOPMENTAL STABILITY
  • MATE CHOICE
  • DROSOPHILA-MELANOGASTER
  • ZEBRA FINCHES
  • BEETLE HORNS
  • SELECTION

Fingerprint

Dive into the research topics of 'Female choice and manipulations of forceps size and symmetry in the European earwig Forficula auricularia L'. Together they form a unique fingerprint.

Cite this