Evolutionary Ecology

, Volume 24, Issue 4, pp 761–772

Inbreeding, energy use and sexual signaling

Original paper

DOI: 10.1007/s10682-009-9333-1

Cite this article as:
Ketola, T. & Kotiaho, J.S. Evol Ecol (2010) 24: 761. doi:10.1007/s10682-009-9333-1

Abstract

Genetic quality and energy metabolism are expected to have an effect on the level of energetically costly sexual signaling. To explore this we manipulated genetic quality of male decorated crickets (Gryllodes sigillatus) by inbreeding and measured the resting metabolic rate and total energy budget of males. We also measured several aspects of the sexual signaling of males: probability to initiate calling, latency, amount of call bouts, first call bout duration, mean call bout duration and total time spent calling. Inbreeding increased the latency and lowered the first and mean call bout duration. Moreover, the resting metabolic rate had a positive effect, and body mass a negative effect on first call bout duration and mean call bout duration. Our results, suggest that sexual signals are indicative of genetic quality but are also dependent on the physical properties of individuals.

Keywords

ConditionCricketEnergy useSexual selectionQuality

Copyright information

© Springer Science+Business Media B.V. 2009

Authors and Affiliations

  1. 1.Centre of Excellence in Evolutionary Research, Department of Biological and Environmental ScienceUniversity of JyväskyläJyväskyläFinland
  2. 2.Natural History MuseumUniversity of JyväskyläJyväskyläFinland