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Intergenerational genotypic interactions drive collective behavioural cycles in a social insect

Many social animals display collective activity cycles based on synchronous behavioural oscillations across group members. A classic example is the colony cycle of army ants, where thousands of individuals undergo stereotypical biphasic behavioural cycles of about one month. Cycle phases coincide wi...

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Autores principales: Jud, Stephanie L., Knebel, Daniel, Ulrich, Yuko
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9627708/
https://www.ncbi.nlm.nih.gov/pubmed/36321497
http://dx.doi.org/10.1098/rspb.2022.1273
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author Jud, Stephanie L.
Knebel, Daniel
Ulrich, Yuko
author_facet Jud, Stephanie L.
Knebel, Daniel
Ulrich, Yuko
author_sort Jud, Stephanie L.
collection PubMed
description Many social animals display collective activity cycles based on synchronous behavioural oscillations across group members. A classic example is the colony cycle of army ants, where thousands of individuals undergo stereotypical biphasic behavioural cycles of about one month. Cycle phases coincide with brood developmental stages, but the regulation of this cycle is otherwise poorly understood. Here, we probe the regulation of cycle duration through interactions between brood and workers in an experimentally amenable army ant relative, the clonal raider ant. We first establish that cycle length varies across clonal lineages using long-term monitoring data. We then investigate the putative sources and impacts of this variation in a cross-fostering experiment with four lineages combining developmental, morphological and automated behavioural tracking analyses. We show that cycle length variation stems from variation in the duration of the larval developmental stage, and that this stage can be prolonged not only by the clonal lineage of brood (direct genetic effects), but also of the workers (indirect genetic effects). We find similar indirect effects of worker line on brood adult size and, conversely (but more surprisingly), indirect genetic effects of the brood on worker behaviour (walking speed and time spent in the nest).
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spelling pubmed-96277082022-11-16 Intergenerational genotypic interactions drive collective behavioural cycles in a social insect Jud, Stephanie L. Knebel, Daniel Ulrich, Yuko Proc Biol Sci Behaviour Many social animals display collective activity cycles based on synchronous behavioural oscillations across group members. A classic example is the colony cycle of army ants, where thousands of individuals undergo stereotypical biphasic behavioural cycles of about one month. Cycle phases coincide with brood developmental stages, but the regulation of this cycle is otherwise poorly understood. Here, we probe the regulation of cycle duration through interactions between brood and workers in an experimentally amenable army ant relative, the clonal raider ant. We first establish that cycle length varies across clonal lineages using long-term monitoring data. We then investigate the putative sources and impacts of this variation in a cross-fostering experiment with four lineages combining developmental, morphological and automated behavioural tracking analyses. We show that cycle length variation stems from variation in the duration of the larval developmental stage, and that this stage can be prolonged not only by the clonal lineage of brood (direct genetic effects), but also of the workers (indirect genetic effects). We find similar indirect effects of worker line on brood adult size and, conversely (but more surprisingly), indirect genetic effects of the brood on worker behaviour (walking speed and time spent in the nest). The Royal Society 2022-11-09 2022-11-02 /pmc/articles/PMC9627708/ /pubmed/36321497 http://dx.doi.org/10.1098/rspb.2022.1273 Text en © 2022 The Authors. https://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/ (https://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, provided the original author and source are credited.
spellingShingle Behaviour
Jud, Stephanie L.
Knebel, Daniel
Ulrich, Yuko
Intergenerational genotypic interactions drive collective behavioural cycles in a social insect
title Intergenerational genotypic interactions drive collective behavioural cycles in a social insect
title_full Intergenerational genotypic interactions drive collective behavioural cycles in a social insect
title_fullStr Intergenerational genotypic interactions drive collective behavioural cycles in a social insect
title_full_unstemmed Intergenerational genotypic interactions drive collective behavioural cycles in a social insect
title_short Intergenerational genotypic interactions drive collective behavioural cycles in a social insect
title_sort intergenerational genotypic interactions drive collective behavioural cycles in a social insect
topic Behaviour
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9627708/
https://www.ncbi.nlm.nih.gov/pubmed/36321497
http://dx.doi.org/10.1098/rspb.2022.1273
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