Relationships among male sexually selected traits in the bean bug, Riptortus pedestris (Heteroptera: Alydidae)

Yû Suzaki, Masako Katsuki, Takahisa Miyatake, Yasukazu Okada

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

Current concepts of sexual selection suggest that male reproductive success is determined by multiple sexual traits. As expression and production of multiple sexual traits are frequently associated with each other, positive or negative correlations among multiple sexual traits ensue. These relationships among traits associated with male reproductive success may be crucial in the evolution of male reproductive strategies. Here, we investigate phenotypic relationships among sexually selected traits in the armed bean bug Riptortus pedestris. In this insect, males with a larger body and weapon are more likely to win male-male competitions, and males with a larger weapon or higher courtship rate are more attractive to females. There was a significant positive correlation between body size and weapon size, whereas the courtship rate had significant negative correlations with body size and weapon size. Our results suggested that there was a phenotypic trade-off between courtship rate and male morphology. In this insect, smaller males may make more effort in courtship behavior as an alternative mating tactic.

Original languageEnglish
Pages (from-to)278-282
Number of pages5
JournalEntomological Science
Volume18
Issue number2
DOIs
Publication statusPublished - Apr 1 2015

Keywords

  • Alternative tactics
  • Multiple cues
  • Phenotypic trade-off
  • Sexual selection

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Insect Science

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