Sexual selection in females and the evolution of polyandry

Salomé Fromonteil, Lucas Marie-Orleach, Lennart Winkler and Tim Janicke

PLOS Biology, 2023, vol. 21, issue 1, 1-20

Abstract: Over the last decades, the field of sexual selection underwent a paradigm shift from sexual-stereotype thinking of “eager” males and “coy” females towards a more nuanced perspective acknowledging that not only males but also females can benefit from multiple mating and compete for mating partners. Yet, sexual selection in females is still considered a peculiarity, and the evolution of polyandry is often viewed to result from a higher mating interest of males. Here, we present meta-analytic evidence from 77 species across a broad range of animal taxa to demonstrate that female reproductive success is overall positively correlated with mating success, suggesting that females typically benefit from multiple mating. Importantly, we found that these fitness gains likely promote the evolution of polyandry. Our findings offer support for the idea that sexual selection is widespread in females and to play a key role for the evolution of animal mating systems. Thereby, our results extend our understanding of the evolutionary consequences of sexual reproduction and contribute to a more balanced view of how sexual selection operates in males and females.

Date: 2023
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Persistent link: https://EconPapers.repec.org/RePEc:plo:pbio00:3001916

DOI: 10.1371/journal.pbio.3001916

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