Signalling and the Evolution of Cooperative Foraging in Dynamic Environments

Torney, Colin J.; Berdahl, Andrew; Couzin, Iain D.

Signalling and the Evolution of Cooperative Foraging in Dynamic Environments

Dateien

Torney_0-388263.pdfGröße: 1.18 MBDownloads: 195

Datum

2011

Autor:innen

Torney, Colin J.

Berdahl, Andrew

Couzin, Iain D.

Publikationstyp

Zeitschriftenartikel

Publikationsstatus

Published

Erschienen in

PLoS Computational Biology. 2011, 7(9), e1002194. ISSN 1553-734X. eISSN 1553-7358. Available under: doi: 10.1371/journal.pcbi.1002194

Zusammenfassung

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.

Fachgebiet (DDC)

570 Biowissenschaften, Biologie

Zitieren

ISO 690

TORNEY, Colin J., Andrew BERDAHL, Iain D. COUZIN, 2011. Signalling and the Evolution of Cooperative Foraging in Dynamic Environments. In: PLoS Computational Biology. 2011, 7(9), e1002194. ISSN 1553-734X. eISSN 1553-7358. Available under: doi: 10.1371/journal.pcbi.1002194

BibTex

@article{Torney2011-09-22Signa-37527,
  year={2011},
  doi={10.1371/journal.pcbi.1002194},
  title={Signalling and the Evolution of Cooperative Foraging in Dynamic Environments},
  number={9},
  volume={7},
  issn={1553-734X},
  journal={PLoS Computational Biology},
  author={Torney, Colin J. and Berdahl, Andrew and Couzin, Iain D.},
  note={Article Number: e1002194}
}

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