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Dynamics of sex ratio and female unmatedness under haplodiploidy

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gardner2014ecolevol1623.pdf (597.1Kb)
Date
05/2014
Author
Gardner, Andy
Funder
The Royal Society
Grant ID
UF100023
Keywords
Arrhenotoky
ecology
evolution
oscillation
sex allocation
virginity
Biological-control agents
QH301 Biology
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Abstract
Haplodiploid sex determination allows unmated females to produce sons. Consequently, a scarcity of males may lead to a significant proportion of females remaining unmated, which may in turn give rise to a surfeit of males in the following generation. Stable oscillation of the sex ratio has been predicted by classic models, and it remains a puzzle as to why this is not observed in natural populations. Here, I investigate the dynamics of sex allocation over ecological and evolutionary timescales to assess the potential for sustained oscillation. I find that, whilst stable oscillation of the sex ratio is possible, the scope for such dynamical behavior is reduced if sex allocation strategies are evolutionary labile, especially if mated females may facultatively adjust their sex allocation according to the present availability of mating partners. My model, taken together with empirical estimates of female unmatedness in haplodiploid taxa, suggests that sustained oscillation of the sex ratio is implausible in natural populations. However, this phenomenon may be relevant to artificially introduced biological control agents.
Citation
Gardner , A 2014 , ' Dynamics of sex ratio and female unmatedness under haplodiploidy ' , Ecology and Evolution , vol. 4 , no. 9 , pp. 1623-1628 . https://doi.org/10.1002/ece3.1045
Publication
Ecology and Evolution
Status
Peer reviewed
DOI
https://doi.org/10.1002/ece3.1045
ISSN
2045-7758
Type
Journal article
Rights
© 2014 The Author. Ecology and Evolution published by John Wiley & Sons Ltd. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
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  • University of St Andrews Research
URI
http://hdl.handle.net/10023/4865

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