THE COMPLEX INTERPLAY OF SEX ALLOCATION AND SEXUAL SELECTION
Article first published online: 11 DEC 2012
© 2012 The Author(s). Evolution© 2012 The Society for the Study of Evolution.
Volume 67, Issue 3, pages 673–678, March 2013
How to Cite
Booksmythe, I., Schwanz, L. E. and Kokko, H. (2013), THE COMPLEX INTERPLAY OF SEX ALLOCATION AND SEXUAL SELECTION. Evolution, 67: 673–678. doi: 10.1111/evo.12003
- Issue published online: 5 MAR 2013
- Article first published online: 11 DEC 2012
- Accepted manuscript online: 9 NOV 2012 12:13PM EST
- Received April 5, 2012 Accepted October 15, 2012 Data Archived: doi:10.5061/dryad.106sd
- eco-evolutionary feedback;
- female preference;
- perceptual constraint;
- primary sex ratio
It is well recognized that sex allocation strategies can be influenced by sexual selection, when females adjust offspring sex ratios in response to their mates’ attractiveness. Yet the reciprocal influence of strategic sex allocation on processes of sexual selection has only recently been revealed. Recent theoretical work demonstrates that sex allocation weakens selection for female preferences, leading to the decline of male traits. However, these results have been derived assuming that females have perfect knowledge of mate attractiveness and precise control over cost-free allocation. Relaxing these assumptions highlights the importance of another feedback: that adaptive sex allocation must become difficult to maintain as traits and preferences decline. When sex allocation strategies erode not only traits and preferences but also their own selective advantage, predictions can no longer be expressed as a simple linear correlation between ornament exaggeration and adaptive sex allocation. Instead, strongest sex ratio biases may be found at intermediate trait levels.