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Carleial, Rômulo, Pizzeri, Tommaso, Richardson, David S. 
ORCID: https://orcid.org/0000-0001-7226-9074 and McDonald, Grant C.
(2023)
Disentangling the causes of temporal variation in the opportunity for sexual selection.
Nature Communications, 14.
ISSN 2041-1723
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Abstract
In principle, temporal fluctuations in the potential for sexual selection can be estimated as changes in intrasexual variance in reproductive success (i.e. the opportunity for selection). However, we know little about how opportunity measures vary over time, and the extent to which such dynamics are affected by stochasticity. We use published mating data from multiple species to investigate temporal variation in the opportunity for sexual selection. First, we show that the opportunity for precopulatory sexual selection typically declines over successive days in both sexes and shorter sampling periods lead to substantial overestimates. Second, by utilising randomised null models, we also find that these dynamics are largely explained by an accumulation of random matings, but that intrasexual competition may slow temporal declines. Third, using data from a red junglefowl (Gallus gallus) population, we show that declines in precopulatory measures over a breeding period were mirrored by declines in the opportunity for both postcopulatory and total sexual selection. Collectively, we show that variance-based metrics of selection change rapidly, are highly sensitive to sampling durations, and likely lead to substantial misinterpretation if used as indicators of sexual selection. However, simulations can begin to disentangle stochastic variation from biological mechanisms.
| Item Type: | Article |
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| Additional Information: | Acknowledgements: R.C. was supported by a DPhil scholarship from the Brazilian National Council for Scientific and Technological Development (CNPq) (grant no. 234988/2014-2), G.C.M. was supported by a Ph.D. CASE scholarship from the Biotechnology and Biological Sciences Research Council and Aviagen Ltd, an industrial LINK award from the Biotechnology and Biological Sciences Research Council and Aviagen Ltd (grant no. BB/L009587/1) to T.P., and by the National Research, Development and Innovation Office, Hungary (grant no. FK 134741). D.S.R. was supported by a research grant from the Natural Environment Research Council (grant no. NE/H006818/1). T.P. was supported by a research grant from the Natural Environment Research Council (grant no. NE/H008047/1), an industrial LINK award from the Biotechnology and Biological Sciences Research Council and Aviagen Ltd (grant no. BB/ L009587/1), and a research grant from the Biotechnology and Biological Sciences Research Council (grant no. BB/V001256/1). Open access funding provided by University of Veterinary Medicine. |
| Uncontrolled Keywords: | chemistry(all),biochemistry, genetics and molecular biology(all),general,physics and astronomy(all) ,/dk/atira/pure/subjectarea/asjc/1600 |
| Faculty \ School: | Faculty of Science > School of Biological Sciences |
| UEA Research Groups: | Faculty of Science > Research Centres > Centre for Ecology, Evolution and Conservation Faculty of Science > Research Groups > Organisms and the Environment |
| Related URLs: | |
| Depositing User: | LivePure Connector |
| Date Deposited: | 28 Feb 2023 15:30 |
| Last Modified: | 15 May 2023 01:02 |
| URI: | https://ueaeprints.uea.ac.uk/id/eprint/91303 |
| DOI: | 10.1038/s41467-023-36536-7 |
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