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The evolution of prudent choice

Härdling, Roger LU and Kokko, H (2005) In Evolutionary Ecology 7(5). p.697-715
Abstract
Question: What mate choice strategies are evolutionarily stable when individuals vary in quality and there is competition over mates? Mathematical method: We analyse a life-history-based game theoretical model of a mating system. The evolutionarily stable strategy (ESS) may be random mating, or any kind of assortative mating dependent on the numerical values of a set of probabilities. We solve for the evolutionarily stable probability values. Key assumptions: Males of high or poor competitive ability pair with highly or poorly fecund females, and can also attempt to take over a female if she has already paired. Only one sex plays an active role in mate choice. Conclusions: We show that increased opportunities for a successful takeover... (More)
Question: What mate choice strategies are evolutionarily stable when individuals vary in quality and there is competition over mates? Mathematical method: We analyse a life-history-based game theoretical model of a mating system. The evolutionarily stable strategy (ESS) may be random mating, or any kind of assortative mating dependent on the numerical values of a set of probabilities. We solve for the evolutionarily stable probability values. Key assumptions: Males of high or poor competitive ability pair with highly or poorly fecund females, and can also attempt to take over a female if she has already paired. Only one sex plays an active role in mate choice. Conclusions: We show that increased opportunities for a successful takeover favours the evolution of 'prudent' mate choice, where low-quality males reject high-quality females, and high-quality males reject low-quality females. This solution may also evolve because of high fighting costs. Alternative parameter settings lead to solutions where only one class of males discriminates between females, or when all males mate indiscriminately. We calculate the correlation between male and female quality in pairs, and show that this correlation may be positive, zero or even negative, depending on the ESS mate choice strategy. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Evolutionary Ecology
volume
7
issue
5
pages
697 - 715
publisher
Springer
external identifiers
  • wos:000229946600004
  • scopus:20644457339
ISSN
1573-8477
language
English
LU publication?
yes
id
2a33eb75-d4b4-40d1-84b4-3bab8a4c4d85 (old id 145264)
alternative location
http://www.evolutionary-ecology.com/issues/v07n05/ffar1810.pdf
date added to LUP
2007-06-25 14:35:55
date last changed
2017-11-19 04:09:23
@article{2a33eb75-d4b4-40d1-84b4-3bab8a4c4d85,
  abstract     = {Question: What mate choice strategies are evolutionarily stable when individuals vary in quality and there is competition over mates? Mathematical method: We analyse a life-history-based game theoretical model of a mating system. The evolutionarily stable strategy (ESS) may be random mating, or any kind of assortative mating dependent on the numerical values of a set of probabilities. We solve for the evolutionarily stable probability values. Key assumptions: Males of high or poor competitive ability pair with highly or poorly fecund females, and can also attempt to take over a female if she has already paired. Only one sex plays an active role in mate choice. Conclusions: We show that increased opportunities for a successful takeover favours the evolution of 'prudent' mate choice, where low-quality males reject high-quality females, and high-quality males reject low-quality females. This solution may also evolve because of high fighting costs. Alternative parameter settings lead to solutions where only one class of males discriminates between females, or when all males mate indiscriminately. We calculate the correlation between male and female quality in pairs, and show that this correlation may be positive, zero or even negative, depending on the ESS mate choice strategy.},
  author       = {Härdling, Roger and Kokko, H},
  issn         = {1573-8477},
  language     = {eng},
  number       = {5},
  pages        = {697--715},
  publisher    = {Springer},
  series       = {Evolutionary Ecology},
  title        = {The evolution of prudent choice},
  volume       = {7},
  year         = {2005},
}