Signalling and the evolution of cooperative foraging in dynamic environments.

Understanding cooperation in animal social groups remains a significant challenge for evolutionary theory. Observed behaviours that benefit others but incur some cost appear incompatible with classical notions of natural selection; however, these behaviours may be explained by concepts such as inclu...

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Autores principales:	Colin J Torney, Andrew Berdahl, Iain D Couzin
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2011
Materias:	Biology (General) QH301-705.5
Acceso en línea:	https://doaj.org/article/ad923aa48ff446f699dcb2330b61a543
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spelling	oai:doaj.org-article:ad923aa48ff446f699dcb2330b61a5432021-11-04T05:42:45ZSignalling and the evolution of cooperative foraging in dynamic environments.1553-734X1553-735810.1371/journal.pcbi.1002194https://doaj.org/article/ad923aa48ff446f699dcb2330b61a5432011-09-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/21966265/pdf/?tool=EBIhttps://doaj.org/toc/1553-734Xhttps://doaj.org/toc/1553-7358Understanding cooperation in animal social groups remains a significant challenge for evolutionary theory. Observed behaviours that benefit others but incur some cost appear incompatible with classical notions of natural selection; however, these behaviours may be explained by concepts such as inclusive fitness, reciprocity, intra-specific mutualism or manipulation. In this work, we examine a seemingly altruistic behaviour, the active recruitment of conspecifics to a food resource through signalling. Here collective, cooperative behaviour may provide highly nonlinear benefits to individuals, since group functionality has the potential to be far greater than the sum of the component parts, for example by enabling the effective tracking of a dynamic resource. We show that due to this effect, signalling to others is an evolutionarily stable strategy under certain environmental conditions, even when there is a cost associated to this behaviour. While exploitation is possible, in the limiting case of a sparse, ephemeral but locally abundant nutrient source, a given environmental profile will support a fixed number of signalling individuals. Through a quantitative analysis, this effective carrying capacity for cooperation is related to the characteristic length and time scales of the resource field.Colin J TorneyAndrew BerdahlIain D CouzinPublic Library of Science (PLoS)articleBiology (General)QH301-705.5ENPLoS Computational Biology, Vol 7, Iss 9, p e1002194 (2011)
institution	DOAJ
collection	DOAJ
language	EN
topic	Biology (General) QH301-705.5
spellingShingle	Biology (General) QH301-705.5 Colin J Torney Andrew Berdahl Iain D Couzin Signalling and the evolution of cooperative foraging in dynamic environments.
description	Understanding cooperation in animal social groups remains a significant challenge for evolutionary theory. Observed behaviours that benefit others but incur some cost appear incompatible with classical notions of natural selection; however, these behaviours may be explained by concepts such as inclusive fitness, reciprocity, intra-specific mutualism or manipulation. In this work, we examine a seemingly altruistic behaviour, the active recruitment of conspecifics to a food resource through signalling. Here collective, cooperative behaviour may provide highly nonlinear benefits to individuals, since group functionality has the potential to be far greater than the sum of the component parts, for example by enabling the effective tracking of a dynamic resource. We show that due to this effect, signalling to others is an evolutionarily stable strategy under certain environmental conditions, even when there is a cost associated to this behaviour. While exploitation is possible, in the limiting case of a sparse, ephemeral but locally abundant nutrient source, a given environmental profile will support a fixed number of signalling individuals. Through a quantitative analysis, this effective carrying capacity for cooperation is related to the characteristic length and time scales of the resource field.
format	article
author	Colin J Torney Andrew Berdahl Iain D Couzin
author_facet	Colin J Torney Andrew Berdahl Iain D Couzin
author_sort	Colin J Torney
title	Signalling and the evolution of cooperative foraging in dynamic environments.
title_short	Signalling and the evolution of cooperative foraging in dynamic environments.
title_full	Signalling and the evolution of cooperative foraging in dynamic environments.
title_fullStr	Signalling and the evolution of cooperative foraging in dynamic environments.
title_full_unstemmed	Signalling and the evolution of cooperative foraging in dynamic environments.
title_sort	signalling and the evolution of cooperative foraging in dynamic environments.
publisher	Public Library of Science (PLoS)
publishDate	2011
url	https://doaj.org/article/ad923aa48ff446f699dcb2330b61a543
work_keys_str_mv	AT colinjtorney signallingandtheevolutionofcooperativeforagingindynamicenvironments AT andrewberdahl signallingandtheevolutionofcooperativeforagingindynamicenvironments AT iaindcouzin signallingandtheevolutionofcooperativeforagingindynamicenvironments
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Signalling and the evolution of cooperative foraging in dynamic environments.

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