Journal of Ethology

, Volume 13, Issue 1, pp 1–8 | Cite as

The effects of body size on mate choice in a grapsid crab,Gaetice depressus (Crustacea, Decapoda)

  • Yasuo Fukui
Article

Abstract

Male and female mate choices were investigated in the grapsid crab,Gaetice depressus (Crustacea, Decapoda) in a laboratory experiment. Males mated indiscriminately with regard to the body size of the females, and frequently copulated with the first females they encountered. In contrast, females showed mate discrimination with regard to the body size of males. The females tended to sample potential mates prior to copulation, and showed both a preference for the larger males and a tendency toward the rejection of males with body sizes smaller than their own. However, they did not discriminate between two males that were either larger or smaller than they themselves. Mate choice by the females of this species is though to be based upon threshold-criterion tactics, in which the body size of the female itself is used as a threshold value.

Keywords

Body Size Laboratory Experiment Animal Ecology Mate Choice Female Mate 

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Copyright information

© Japan Ethological Society 1995

Authors and Affiliations

  • Yasuo Fukui
    • 1
  1. 1.Department of Zoology, Faculty of ScienceKyoto UniversitySakyo, KyotoJapan

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