The impact of social complexity on the efficacy of natural selection in termites

In eusocial species, reproduction is monopolized by a few reproductive individuals.From the perspective of population genetics, this implies that the effective population size (Ne) of these organisms is likely to be smaller compared to solitary species, as has been proposed in the literature for eus...

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Main Authors: Roux, Camille, Ha, Alice, Weyna, Arthur, Lode, Morgan, Romiguier, Jonathan
Format: Article
Language:English
Published: Peer Community In 2024-10-01
Series:Peer Community Journal
Online Access:https://peercommunityjournal.org/articles/10.24072/pcjournal.476/
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author Roux, Camille
Ha, Alice
Weyna, Arthur
Lode, Morgan
Romiguier, Jonathan
author_facet Roux, Camille
Ha, Alice
Weyna, Arthur
Lode, Morgan
Romiguier, Jonathan
author_sort Roux, Camille
collection DOAJ
description In eusocial species, reproduction is monopolized by a few reproductive individuals.From the perspective of population genetics, this implies that the effective population size (Ne) of these organisms is likely to be smaller compared to solitary species, as has been proposed in the literature for eusocial hymenoptera. In this study, we investigate the genomic consequences of eusociality in termites (Isoptera) on two different timescales. First, by analyzing transcriptome data from 66 Blattodea species, we focus on the ratio of non-synonymous to synonymous mutations dN/dS as a marker of natural selection efficiency and effective population size. Our results demonstrate an elevated dN/dS ratio in termites compared to other members of Blattodea, further generalizing the idea that convergent evolution toward eusociality strongly reduces the effective population size and the genome-wide efficiency of natural selection. Then, by comparing 68 termite transcriptomes, we show that this decrease in natural selection efficiency is even more pronounced in termites displaying high levels of social complexity. This study contributes to understanding the complex interplay between social structures and natural selection patterns, highlighting the genetic footprint of eusociality in shaping the evolution of termites.
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spelling doaj-art-9e62830aa9974b9b8db024f5ec273fec2025-02-07T10:17:17ZengPeer Community InPeer Community Journal2804-38712024-10-01410.24072/pcjournal.47610.24072/pcjournal.476The impact of social complexity on the efficacy of natural selection in termites Roux, Camille0Ha, Alice1Weyna, Arthur2Lode, Morgan3Romiguier, Jonathan4https://orcid.org/0000-0002-2527-4740Univ. Lille, CNRS, UMR 8198 - Evo-Eco-Paleo, F-59000, Lille, FranceInstitut des Sciences de l’Evolution (UMR 5554) University of Montpellier, CNRS, F-34000 Montpellier, FranceInstitut des Sciences de l’Evolution (UMR 5554) University of Montpellier, CNRS, F-34000 Montpellier, FranceUniv. Lille, CNRS, UMR 8198 - Evo-Eco-Paleo, F-59000, Lille, FranceInstitut des Sciences de l’Evolution (UMR 5554) University of Montpellier, CNRS, F-34000 Montpellier, FranceIn eusocial species, reproduction is monopolized by a few reproductive individuals.From the perspective of population genetics, this implies that the effective population size (Ne) of these organisms is likely to be smaller compared to solitary species, as has been proposed in the literature for eusocial hymenoptera. In this study, we investigate the genomic consequences of eusociality in termites (Isoptera) on two different timescales. First, by analyzing transcriptome data from 66 Blattodea species, we focus on the ratio of non-synonymous to synonymous mutations dN/dS as a marker of natural selection efficiency and effective population size. Our results demonstrate an elevated dN/dS ratio in termites compared to other members of Blattodea, further generalizing the idea that convergent evolution toward eusociality strongly reduces the effective population size and the genome-wide efficiency of natural selection. Then, by comparing 68 termite transcriptomes, we show that this decrease in natural selection efficiency is even more pronounced in termites displaying high levels of social complexity. This study contributes to understanding the complex interplay between social structures and natural selection patterns, highlighting the genetic footprint of eusociality in shaping the evolution of termites.https://peercommunityjournal.org/articles/10.24072/pcjournal.476/
spellingShingle Roux, Camille
Ha, Alice
Weyna, Arthur
Lode, Morgan
Romiguier, Jonathan
The impact of social complexity on the efficacy of natural selection in termites
Peer Community Journal
title The impact of social complexity on the efficacy of natural selection in termites
title_full The impact of social complexity on the efficacy of natural selection in termites
title_fullStr The impact of social complexity on the efficacy of natural selection in termites
title_full_unstemmed The impact of social complexity on the efficacy of natural selection in termites
title_short The impact of social complexity on the efficacy of natural selection in termites
title_sort impact of social complexity on the efficacy of natural selection in termites
url https://peercommunityjournal.org/articles/10.24072/pcjournal.476/
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