Behavioral Ecology and Sociobiology

, Volume 21, Issue 3, pp 197–202

Sperm competition as a mechanism of female choice in the field cricket, Gryllus bimaculatus

  • L. W. Simmons
Article

DOI: 10.1007/BF00303211

Cite this article as:
Simmons, L.W. Behav Ecol Sociobiol (1987) 21: 197. doi:10.1007/BF00303211

Summary

While traditionally viewed as an extension of intermale competition, mechanisms of sperm competition may be used by multiply mating females for mate choice. In the field cricket G. bimaculatus sperm were shown to mix in the spermatheca. The proportion of offspring sired by the second male increased with spermatophore attachment duration and, therefore, the number of sperm transferred. There was no second male advantage for single matings after an initial double mating. However, the proportion ofoffspring sired by the second male increased in proportion to the number of times he mated such that second males mating three times after an initial double mating had the advantage at fertilization. The data suggested that sperm were utilized in proportion to their numerical representation in the spermatheca. The mechanism of sperm precedence may, therefore, be one of sperm dilution. Female G. bimaculatus may control the degree of sperm competition as a mechanism of mate choice. By accepting large quantities of sperm from chosen males they may determine the paternity of their offspring by diluting out the sperm stored from previous matings.

Copyright information

© Springer-Verlag 1987

Authors and Affiliations

  • L. W. Simmons
    • 1
  1. 1.Animal Behaviour Research Group, Department of ZoologhUniversity of NottinghamNottinghamUK
  2. 2.Department of ZoologyUniversity of LiverpoolLiverpoolUK

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