MALE–FEMALE COEVOLUTION IN THE WILD: EVIDENCE FROM A TIME SERIES IN ARTEMIA FRANCISCANA
Article first published online: 20 SEP 2011
© 2011 The Author(s). Evolution© 2011 The Society for the Study of Evolution.
Volume 65, Issue 10, pages 2881–2892, October 2011
How to Cite
Rode, N. O., Charmantier, A. and Lenormand, T. (2011), MALE–FEMALE COEVOLUTION IN THE WILD: EVIDENCE FROM A TIME SERIES IN ARTEMIA FRANCISCANA. Evolution, 65: 2881–2892. doi: 10.1111/j.1558-5646.2011.01384.x
- Issue published online: 3 OCT 2011
- Article first published online: 20 SEP 2011
- Accepted manuscript online: 16 JUN 2011 04:26AM EST
- Received May 16, 2011, Accepted May 17, 2011, Data Archived: Dryad doi:10.5061/dryad.56k55
- Arms race;
- fluctuating selection;
- resurrection ecology;
- sexual conflicts;
- time-shift experiment
Sexual conflicts are ubiquitous in nature and are expected to lead to an antagonistic coevolution between the sexes. This coevolutionary process is driven by selection on sexually antagonistic traits that can either be directional or fluctuating. In this study, we used dormant cysts of Artemia franciscana, collected in the same population in three different years over a 23-year period (corresponding to ∼160 generations in this system), to investigate male–female coevolution in natural conditions over time. We performed a cross experiment study where reproduction of females mated to males from the past, present, or future was monitored until death. In agreement with a model of “fluctuating selection,” we found that females survived better and had longer interbrood intervals when mated with their contemporary males compared to when mated with males from the future or the past. However, female weekly and lifetime reproductive successes displayed no differences between contemporary and noncontemporary matings. Finally, the coevolutionary patterns (“arms race dynamics” or “fluctuating selection dynamics”) possibly acting on female relative fitness could not be discriminated. This study is the first direct demonstration that the process of male–female coevolution, previously revealed by experimental evolution in laboratory artificial conditions, can occur in nature on a short evolutionary time scale.