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The evolutionary dynamics of adaptive virginity, sex-allocation and altruistic helping in haplodiploid animals

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Rautiala, P., Helanterä, H., & Puurtinen, M. (2018). The evolutionary dynamics of adaptive virginity, sex-allocation and altruistic helping in haplodiploid animals. Evolution, 72 (1), 30-38. doi:10.1111/evo.13399
Published in
Evolution
Authors
Rautiala, Petri |
Helanterä, Heikki |
Puurtinen, Mikael
Date
2018
Discipline
Ekologia ja evoluutiobiologia
Copyright
© 2017 The Society for the Study of Evolution. This is a final draft version of an article whose final and definitive form has been published by Wiley. Published in this repository with the kind permission of the publisher.

 
In haplodiploids, females can produce sons from unfertilized eggs without mating. However, virgin reproduction is usually considered to be a result of a failure to mate, rather than an adaptation. Here, we build an analytical model for evolution of virgin reproduction, sex-allocation, and altruistic female helping in haplodiploid taxa. We show that when mating is costly (e.g., when mating increases predation risk), virginity can evolve as an adaptive female reproductive strategy. Furthermore, adaptive virginity results in strongly divergent sex-ratios in mated and virgin queen nests (“split sex ratios”), which promotes the evolution of altruistic helping by daughters in mated queen nests. However, when helpers evolve to be efficient and increase nest production significantly, virgin reproduction is selected against. Our results suggest that adaptive virginity could have been an important stepping stone on the pathway to eusociality in haplodiploids. We further show that virginity can be an adaptive reproductive strategy also in primitively social haplodiploids if workers bias the sex ratio toward females. By remaining virgin, queens are free to produce sons, the more valuable sex in a female-biased population. Our work brings a new dimension to the studies linking reproductive strategies with social evolution. ...
Publisher
Wiley; Society for the Study of Evolution
ISSN Search the Publication Forum
0014-3820
Keywords
lisääntyminen lisääntymiskäyttäytyminen alternative reproduction strategies mating behavior reproductive altruism split sex ratios virgin reproduction
DOI
10.1111/evo.13399
URI

http://urn.fi/URN:NBN:fi:jyu-201801151199

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