Evolutionary dynamics of altruism and cheating among social amoebas

Brannstrom A & Dieckmann U (2005). Evolutionary dynamics of altruism and cheating among social amoebas. Proceedings of the Royal Society B: Biological Sciences 272 (1572): 1609-1616. DOI:10.1098/rspb.2005.3116.

Full text not available from this repository.

Abstract

"Dictyostelium discoideum" is a eukaryotic amoeba, which, when starvation is imminent, aggregates to form fruiting bodies consisting of a stalk of reproductively dead cells that supports spores. Because different clones may be involved in such aggregations, cheater strategies may emerge that allocate a smaller fraction of cells to stalk formation, thus gaining a reproductive advantage. In this paper, we model the evolutionary dynamics of allocation strategies in Dictyostelium under the realistic assumption that the number of clones involved in aggregations follows a random distribution. By determining the full course of evolutionary dynamics, we show that evolutionary branching in allocation strategies may occur, resulting in dimorphic populations that produce stalkless and stalked fruiting bodies. We also demonstrate that such dimorphisms are more likely to emerge when the variation in the number of clones involved in aggregations is large.

Item Type: Article
Uncontrolled Keywords: Dictyostelium; Slime mould; Adaptive dynamics; Altruism
Research Programs: Adaptive Dynamics Network (ADN)
Postdoctoral Scholars (PDS)
Bibliographic Reference: Proceedings of the Royal Society B: Biological Siences; 272(1572):1609-1616 (7 August 2005)
Depositing User: IIASA Import
Date Deposited: 15 Jan 2016 02:17
Last Modified: 23 Aug 2016 09:37
URI: http://pure.iiasa.ac.at/7485

Actions (login required)

View Item View Item

International Institute for Applied Systems Analysis (IIASA)
Schlossplatz 1, A-2361 Laxenburg, Austria
Phone: (+43 2236) 807 0 Fax:(+43 2236) 71 313