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Intrafamily and intragenomic conflicts in human warfare

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Micheletti_2017_PRSB_HumanWarfare_CC.pdf (639.5Kb)
Date
22/02/2017
Author
Micheletti, Alberto J. C.
Ruxton, Graeme D.
Gardner, Andy
Keywords
War
Sex-biased dispersal
Parent-offspring conflict
Sexual conflict
Intragenomic conflict
Genomic imprinting
GF Human ecology. Anthropogeography
QA Mathematics
QH301 Biology
DAS
BDC
R2C
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Abstract
Recent years have seen an explosion of multidisciplinary interest in ancient human warfare. Theory has emphasised a key role for kin-selected cooperation, modulated by sex-specific demography, in explaining intergroup violence. However, conflicts of interest remain a relatively underexplored factor in the evolutionary-ecological study of warfare, with little consideration given to which parties influence the decision to go to war and how their motivation may differ. We develop a mathematical model to investigate the interplay between sex-specific demography and human warfare, showing that: the ecology of warfare drives the evolution of sex-biased dispersal; sex-biased dispersal modulates intrafamily and intragenomic conflicts in relation to warfare; intragenomic conflict drives parent-of-origin-specific patterns of gene expression – i.e. 'genomic imprinting' – in relation to warfare phenotypes; and an ecological perspective of conflicts at the levels of the gene, individual and social group yields novel predictions as to pathologies associated with mutations and epimutations at loci underpinning human violence.
Citation
Micheletti , A J C , Ruxton , G D & Gardner , A 2017 , ' Intrafamily and intragenomic conflicts in human warfare ' , Proceedings of the Royal Society B: Biological Sciences , vol. 284 , no. 1849 , 20162699 . https://doi.org/10.1098/rspb.2016.2699
Publication
Proceedings of the Royal Society B: Biological Sciences
Status
Peer reviewed
DOI
https://doi.org/10.1098/rspb.2016.2699
ISSN
0962-8452
Type
Journal article
Rights
© 2017 The Authors. 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.
Description
A.J.C.M. is supported by a Ph.D. studentship from the School of Biology, University of St Andrews, and A.G. is supported by a Natural Environment Research Council Independent Research Fellowship (NE/K009524/1).
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  • University of St Andrews Research
URI
http://hdl.handle.net/10023/10337

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