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Cultural sexual selection in monogamous human populations
In humans, both sexes sometimes show peculiar mating preferences that do not appear to increase their fitness either directly or indirectly. As humans may transmit their preferences and target culturally, and these may be artificially modifiable, I develop theoretical models where a preference and/o...
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Formato: | Online Artículo Texto |
Lenguaje: | English |
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The Royal Society Publishing
2017
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5493899/ https://www.ncbi.nlm.nih.gov/pubmed/28680657 http://dx.doi.org/10.1098/rsos.160946 |
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author | Nakahashi, Wataru |
author_facet | Nakahashi, Wataru |
author_sort | Nakahashi, Wataru |
collection | PubMed |
description | In humans, both sexes sometimes show peculiar mating preferences that do not appear to increase their fitness either directly or indirectly. As humans may transmit their preferences and target culturally, and these may be artificially modifiable, I develop theoretical models where a preference and/or a trait are culturally transmitted with a restriction of the trait modification. I assume a monogamous population where some individuals fail to find a mate, and this affects the preference and the trait in the next time step. I show that a strong aversion to, or high tolerance of, failed individuals are necessary for the evolution of irrational preferences that neither seek good genes nor any direct benefit. This evolution is more likely to occur when the preference and/or the trait are cultural rather than genetic. These results may partly explain why humans sometimes show mating preferences for exaggerated physical and cultural traits. |
format | Online Article Text |
id | pubmed-5493899 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2017 |
publisher | The Royal Society Publishing |
record_format | MEDLINE/PubMed |
spelling | pubmed-54938992017-07-05 Cultural sexual selection in monogamous human populations Nakahashi, Wataru R Soc Open Sci Biology (Whole Organism) In humans, both sexes sometimes show peculiar mating preferences that do not appear to increase their fitness either directly or indirectly. As humans may transmit their preferences and target culturally, and these may be artificially modifiable, I develop theoretical models where a preference and/or a trait are culturally transmitted with a restriction of the trait modification. I assume a monogamous population where some individuals fail to find a mate, and this affects the preference and the trait in the next time step. I show that a strong aversion to, or high tolerance of, failed individuals are necessary for the evolution of irrational preferences that neither seek good genes nor any direct benefit. This evolution is more likely to occur when the preference and/or the trait are cultural rather than genetic. These results may partly explain why humans sometimes show mating preferences for exaggerated physical and cultural traits. The Royal Society Publishing 2017-06-21 /pmc/articles/PMC5493899/ /pubmed/28680657 http://dx.doi.org/10.1098/rsos.160946 Text en © 2017 The Authors. http://creativecommons.org/licenses/by/4.0/ Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/4.0/, which permits unrestricted use, provided the original author and source are credited. |
spellingShingle | Biology (Whole Organism) Nakahashi, Wataru Cultural sexual selection in monogamous human populations |
title | Cultural sexual selection in monogamous human populations |
title_full | Cultural sexual selection in monogamous human populations |
title_fullStr | Cultural sexual selection in monogamous human populations |
title_full_unstemmed | Cultural sexual selection in monogamous human populations |
title_short | Cultural sexual selection in monogamous human populations |
title_sort | cultural sexual selection in monogamous human populations |
topic | Biology (Whole Organism) |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5493899/ https://www.ncbi.nlm.nih.gov/pubmed/28680657 http://dx.doi.org/10.1098/rsos.160946 |
work_keys_str_mv | AT nakahashiwataru culturalsexualselectioninmonogamoushumanpopulations |