Stability and responsiveness in a self-organized living architecture.

Robustness and adaptability are central to the functioning of biological systems, from gene networks to animal societies. Yet the mechanisms by which living organisms achieve both stability to perturbations and sensitivity to input are poorly understood. Here, we present an integrated study of a liv...

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Autores principales:	Simon Garnier, Tucker Murphy, Matthew Lutz, Edward Hurme, Simon Leblanc, Iain D Couzin
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2013
Materias:	Biology (General) QH301-705.5
Acceso en línea:	https://doaj.org/article/539eeb5386d14294ae6ef2ad18738f81
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spelling	oai:doaj.org-article:539eeb5386d14294ae6ef2ad18738f812021-11-18T05:52:17ZStability and responsiveness in a self-organized living architecture.1553-734X1553-735810.1371/journal.pcbi.1002984https://doaj.org/article/539eeb5386d14294ae6ef2ad18738f812013-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/23555219/?tool=EBIhttps://doaj.org/toc/1553-734Xhttps://doaj.org/toc/1553-7358Robustness and adaptability are central to the functioning of biological systems, from gene networks to animal societies. Yet the mechanisms by which living organisms achieve both stability to perturbations and sensitivity to input are poorly understood. Here, we present an integrated study of a living architecture in which army ants interconnect their bodies to span gaps. We demonstrate that these self-assembled bridges are a highly effective means of maintaining traffic flow over unpredictable terrain. The individual-level rules responsible depend only on locally-estimated traffic intensity and the number of neighbours to which ants are attached within the structure. We employ a parameterized computational model to reveal that bridges are tuned to be maximally stable in the face of regular, periodic fluctuations in traffic. However analysis of the model also suggests that interactions among ants give rise to feedback processes that result in bridges being highly responsive to sudden interruptions in traffic. Subsequent field experiments confirm this prediction and thus the dual nature of stability and flexibility in living bridges. Our study demonstrates the importance of robust and adaptive modular architecture to efficient traffic organisation and reveals general principles regarding the regulation of form in biological self-assemblies.Simon GarnierTucker MurphyMatthew LutzEdward HurmeSimon LeblancIain D CouzinPublic Library of Science (PLoS)articleBiology (General)QH301-705.5ENPLoS Computational Biology, Vol 9, Iss 3, p e1002984 (2013)
institution	DOAJ
collection	DOAJ
language	EN
topic	Biology (General) QH301-705.5
spellingShingle	Biology (General) QH301-705.5 Simon Garnier Tucker Murphy Matthew Lutz Edward Hurme Simon Leblanc Iain D Couzin Stability and responsiveness in a self-organized living architecture.
description	Robustness and adaptability are central to the functioning of biological systems, from gene networks to animal societies. Yet the mechanisms by which living organisms achieve both stability to perturbations and sensitivity to input are poorly understood. Here, we present an integrated study of a living architecture in which army ants interconnect their bodies to span gaps. We demonstrate that these self-assembled bridges are a highly effective means of maintaining traffic flow over unpredictable terrain. The individual-level rules responsible depend only on locally-estimated traffic intensity and the number of neighbours to which ants are attached within the structure. We employ a parameterized computational model to reveal that bridges are tuned to be maximally stable in the face of regular, periodic fluctuations in traffic. However analysis of the model also suggests that interactions among ants give rise to feedback processes that result in bridges being highly responsive to sudden interruptions in traffic. Subsequent field experiments confirm this prediction and thus the dual nature of stability and flexibility in living bridges. Our study demonstrates the importance of robust and adaptive modular architecture to efficient traffic organisation and reveals general principles regarding the regulation of form in biological self-assemblies.
format	article
author	Simon Garnier Tucker Murphy Matthew Lutz Edward Hurme Simon Leblanc Iain D Couzin
author_facet	Simon Garnier Tucker Murphy Matthew Lutz Edward Hurme Simon Leblanc Iain D Couzin
author_sort	Simon Garnier
title	Stability and responsiveness in a self-organized living architecture.
title_short	Stability and responsiveness in a self-organized living architecture.
title_full	Stability and responsiveness in a self-organized living architecture.
title_fullStr	Stability and responsiveness in a self-organized living architecture.
title_full_unstemmed	Stability and responsiveness in a self-organized living architecture.
title_sort	stability and responsiveness in a self-organized living architecture.
publisher	Public Library of Science (PLoS)
publishDate	2013
url	https://doaj.org/article/539eeb5386d14294ae6ef2ad18738f81
work_keys_str_mv	AT simongarnier stabilityandresponsivenessinaselforganizedlivingarchitecture AT tuckermurphy stabilityandresponsivenessinaselforganizedlivingarchitecture AT matthewlutz stabilityandresponsivenessinaselforganizedlivingarchitecture AT edwardhurme stabilityandresponsivenessinaselforganizedlivingarchitecture AT simonleblanc stabilityandresponsivenessinaselforganizedlivingarchitecture AT iaindcouzin stabilityandresponsivenessinaselforganizedlivingarchitecture
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Stability and responsiveness in a self-organized living architecture.

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