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Direct and indirect phenotypic effects on sociability indicate potential to evolve

The decision to leave or join a group is important as group size influences many aspects of organisms' lives and their fitness. This tendency to socialise with others, sociability, should be influenced by genes carried by focal individuals (direct genetic effects) and by genes in partner indivi...

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Autor principal: Fisher, David N.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: John Wiley and Sons Inc. 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10092521/
https://www.ncbi.nlm.nih.gov/pubmed/36263954
http://dx.doi.org/10.1111/jeb.14110
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author Fisher, David N.
author_facet Fisher, David N.
author_sort Fisher, David N.
collection PubMed
description The decision to leave or join a group is important as group size influences many aspects of organisms' lives and their fitness. This tendency to socialise with others, sociability, should be influenced by genes carried by focal individuals (direct genetic effects) and by genes in partner individuals (indirect genetic effects), indicating the trait's evolution could be slower or faster than expected. However, estimating these genetic parameters is difficult. Here, in a laboratory population of the cockroach Blaptica dubia, I estimate phenotypic parameters for sociability: repeatability (R) and repeatable influence (RI), that indicate whether direct and indirect genetic effects respectively are likely. I also estimate the interaction coefficient (Ψ), which quantifies how strongly a partner's trait influences the phenotype of the focal individual and is key in models for the evolution of interacting phenotypes. Focal individuals were somewhat repeatable for sociability across a 3‐week period (R = 0.080), and partners also had marginally consistent effects on focal sociability (RI = 0.053). The interaction coefficient was non‐zero, although in opposite sign for the sexes; males preferred to associate with larger individuals (Ψ (male) = −0.129), while females preferred to associate with smaller individuals (Ψ (female) = 0.071). Individual sociability was consistent between dyadic trials and in social networks of groups. These results provide phenotypic evidence that direct and indirect genetic effects have limited influence on sociability, with perhaps most evolutionary potential stemming from heritable effects of the body mass of partners. Sex‐specific interaction coefficients may produce sexual conflict and the evolution of sexual dimorphism in social behaviour.
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spelling pubmed-100925212023-04-13 Direct and indirect phenotypic effects on sociability indicate potential to evolve Fisher, David N. J Evol Biol Research Articles The decision to leave or join a group is important as group size influences many aspects of organisms' lives and their fitness. This tendency to socialise with others, sociability, should be influenced by genes carried by focal individuals (direct genetic effects) and by genes in partner individuals (indirect genetic effects), indicating the trait's evolution could be slower or faster than expected. However, estimating these genetic parameters is difficult. Here, in a laboratory population of the cockroach Blaptica dubia, I estimate phenotypic parameters for sociability: repeatability (R) and repeatable influence (RI), that indicate whether direct and indirect genetic effects respectively are likely. I also estimate the interaction coefficient (Ψ), which quantifies how strongly a partner's trait influences the phenotype of the focal individual and is key in models for the evolution of interacting phenotypes. Focal individuals were somewhat repeatable for sociability across a 3‐week period (R = 0.080), and partners also had marginally consistent effects on focal sociability (RI = 0.053). The interaction coefficient was non‐zero, although in opposite sign for the sexes; males preferred to associate with larger individuals (Ψ (male) = −0.129), while females preferred to associate with smaller individuals (Ψ (female) = 0.071). Individual sociability was consistent between dyadic trials and in social networks of groups. These results provide phenotypic evidence that direct and indirect genetic effects have limited influence on sociability, with perhaps most evolutionary potential stemming from heritable effects of the body mass of partners. Sex‐specific interaction coefficients may produce sexual conflict and the evolution of sexual dimorphism in social behaviour. John Wiley and Sons Inc. 2022-10-20 2023-01 /pmc/articles/PMC10092521/ /pubmed/36263954 http://dx.doi.org/10.1111/jeb.14110 Text en © 2022 The Author. Journal of Evolutionary Biology published by John Wiley & Sons Ltd on behalf of European Society for Evolutionary Biology. https://creativecommons.org/licenses/by-nc/4.0/This is an open access article under the terms of the http://creativecommons.org/licenses/by-nc/4.0/ (https://creativecommons.org/licenses/by-nc/4.0/) License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes.
spellingShingle Research Articles
Fisher, David N.
Direct and indirect phenotypic effects on sociability indicate potential to evolve
title Direct and indirect phenotypic effects on sociability indicate potential to evolve
title_full Direct and indirect phenotypic effects on sociability indicate potential to evolve
title_fullStr Direct and indirect phenotypic effects on sociability indicate potential to evolve
title_full_unstemmed Direct and indirect phenotypic effects on sociability indicate potential to evolve
title_short Direct and indirect phenotypic effects on sociability indicate potential to evolve
title_sort direct and indirect phenotypic effects on sociability indicate potential to evolve
topic Research Articles
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10092521/
https://www.ncbi.nlm.nih.gov/pubmed/36263954
http://dx.doi.org/10.1111/jeb.14110
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