Structured growth and genetic drift raise relatedness in the social amoeba
            Dictyostelium discoideum

Neil J. Buttery; Chandra N. Jack; Boahemaa Adu-Oppong; Kate T. Snyder; Christopher R. L. Thompson; David C. Queller; Joan E. Strassmann

doi:10.1098/rsbl.2012.0421

journal article Jul 04, 2012

Structured growth and genetic drift raise relatedness in the social amoeba Dictyostelium discoideum

Neil J. Buttery Chandra N. Jack Boahemaa Adu-Oppong

Kate T. Snyder Christopher R. L. Thompson David C. Queller Joan E. Strassmann

Biology Letters Vol. 8 No. 5 pp. 794-797 · The Royal Society

View at Publisher Save 10.1098/rsbl.2012.0421

Abstract

One condition for the evolution of altruism is genetic relatedness between altruist and beneficiary, often achieved through active kin recognition. Here, we investigate the power of a passive process resulting from genetic drift during population growth in the social amoeba
Dictyostelium discoideum
. We put labelled and unlabelled cells of the same clone in the centre of a plate, and allowed them to proliferate outward. Zones formed by genetic drift owing to the small population of actively growing cells at the colony edge. We also found that single cells could form zones of high relatedness. Relatedness increased at a significantly higher rate when food was in short supply. This study shows that relatedness can be significantly elevated before the social stage without a small founding population size or recognition mechanism.

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Details

Published: Jul 04, 2012
Vol/Issue: 8(5)
Pages: 794-797
License: View

Authors

N

Neil J. Buttery

Department of Biology, Washington University in St Louis, One Brookings Drive, Campus Box 1137, St Louis, MO 63130-4899, USA

C

Chandra N. Jack

Department of Bioengineering, Rice University, 6100 Main St., Houston, TX 77005, USA

B

Boahemaa Adu-Oppong

Department of Biology, Washington University in St Louis, One Brookings Drive, Campus Box 1137, St Louis, MO 63130-4899, USA

K

Kate T. Snyder

Department of Ecology and Evolution, Rice University, 6100 Main St., Houston, TX 77005, USA

C

Christopher R. L. Thompson

Faculty of Life Sciences, University of Manchester, Oxford Road, Manchester M13 9PT, UK

D

David C. Queller

Department of Biology, Washington University in St Louis, One Brookings Drive, Campus Box 1137, St Louis, MO 63130-4899, USA

J

Joan E. Strassmann

Department of Biology, Washington University in St Louis, One Brookings Drive, Campus Box 1137, St Louis, MO 63130-4899, USA

Cite This Article

Neil J. Buttery, Chandra N. Jack, Boahemaa Adu-Oppong, et al. (2012). Structured growth and genetic drift raise relatedness in the social amoeba Dictyostelium discoideum. Biology Letters, 8(5), 794-797. https://doi.org/10.1098/rsbl.2012.0421

Structured growth and genetic drift raise relatedness in the social amoeba Dictyostelium discoideum

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