Does a trade-off between current reproductive success and survival affect the honesty of male signalling in species with male parental care?
Article first published online: 21 SEP 2010
© 2010 The Authors. Journal Compilation © 2010 European Society For Evolutionary Biology
Journal of Evolutionary Biology
Volume 23, Issue 11, pages 2461–2473, November 2010
How to Cite
KELLY, N. B. and ALONZO, S. H. (2010), Does a trade-off between current reproductive success and survival affect the honesty of male signalling in species with male parental care?. Journal of Evolutionary Biology, 23: 2461–2473. doi: 10.1111/j.1420-9101.2010.02111.x
- Issue published online: 21 OCT 2010
- Article first published online: 21 SEP 2010
- Received 18 April 2010; revised 10 August 2010; accepted 12 August 2010
- life history;
- male allocation;
- parental care;
- reproductive strategies;
- sexual selection
Recent theory predicted that male advertisement will reliably signal investment in paternal care in species where offspring survival requires paternal care and males allocate resources between advertisement and care. However, the predicted relationship between care and advertisement depended on the marginal gains from investment in current reproductive traits. Life history theory suggests that these fitness gains are also subject to a trade-off between current and future reproduction. Here, we investigate whether male signalling remains a reliable indicator of parental care when males allocate resources between current advertisement, paternal care and survival to future reproduction. We find that advertisement is predicted to remain a reliable signal of male care but that advertisement may cease to reliably indicate male quality because low-quality males are predicted to invest in current reproduction, whereas higher-quality males are able to invest in both current reproduction and survival to future reproduction.