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Proc Biol Sci

Title:		Eusociality through conflict dissolution
Author(s):		Gonzalez-Forero M; Pena J;
Address:		"School of Biology, University of St Andrews, St Andrews, UK. Institute for Advanced Study in Toulouse, University of Toulouse Capitole, Toulouse, France"
Journal Title:		Proc Biol Sci
Year:		2021
Volume:		20210421
Issue:		1949
Page Number:		20210386 -
DOI:		10.1098/rspb.2021.0386
ISSN/ISBN:		1471-2954 (Electronic) 0962-8452 (Print) 0962-8452 (Linking)
Abstract:		"Eusociality, where largely unreproductive offspring help their mothers reproduce, is a major form of social organization. An increasingly documented feature of eusociality is that mothers induce their offspring to help by means of hormones, pheromones or behavioural displays, with evidence often indicating that offspring help voluntarily. The co-occurrence of maternal influence and offspring voluntary help may be explained by what we call the converted helping hypothesis, whereby maternally manipulated helping subsequently becomes voluntary. Such hypothesis requires that parent-offspring conflict is eventually dissolved-for instance, if the benefit of helping increases sufficiently over evolutionary time. We show that help provided by maternally manipulated offspring can enable the mother to sufficiently increase her fertility to transform parent-offspring conflict into parent-offspring agreement. This conflict-dissolution mechanism requires that helpers alleviate maternal life-history trade-offs, and results in reproductive division of labour, high queen fertility and honest queen signalling suppressing worker reproduction-thus exceptionally recovering diverse features of eusociality. As such trade-off alleviation seemingly holds widely across eusocial taxa, this mechanism offers a potentially general explanation for the origin of eusociality, the prevalence of maternal influence, and the offspring's willingness to help. Overall, our results explain how a major evolutionary transition can happen from ancestral conflict"
Keywords:		*Biological Evolution Female Pheromones Reproduction *Social Behavior Solubility evolution of eusociality evolutionary dynamics kin selection major transitions parent-offspring conflict parental manipulation;
Notes:		"MedlineGonzalez-Forero, Mauricio Pena, Jorge eng Research Support, Non-U.S. Gov't England 2021/04/22 Proc Biol Sci. 2021 Apr 28; 288(1949):20210386. doi: 10.1098/rspb.2021.0386. Epub 2021 Apr 21"