Please use this identifier to cite or link to this item:
https://hdl.handle.net/2440/137880
Citations | ||
Scopus | Web of Science® | Altmetric |
---|---|---|
?
|
?
|
Type: | Journal article |
Title: | The effect of bottleneck size on evolution in nested Darwinian populations. |
Author: | Nitschke, M.C. Black, A.J. Bourrat, P. Rainey, P.B. |
Citation: | Journal of Theoretical Biology, 2023; 561:111414-1-111414-12 |
Publisher: | Elsevier |
Issue Date: | 2023 |
ISSN: | 0022-5193 1095-8541 |
Statement of Responsibility: | Matthew C. Nitschke, Andrew J. Black, Pierrick Bourrat, Paul B. Rainey |
Abstract: | Previous work has shown how a minimal ecological structure consisting of patchily distributed resources and recurrent dispersal between patches can scaffold Darwinian properties onto collections of cells. When the timescale of dispersal is long compared with the time to consume resources, patch fitness increases but comes at a cost to cell growth rates. This creates conditions that initiate evolutionary transitions in individuality. A key feature of the scaffold is a bottleneck created during dispersal, causing patches to be founded by single cells. The bottleneck decreases competition within patches and, hence, creates a strong hereditary link at the level of patches. Here, we construct a fully stochastic model to investigate the effect of bottleneck size on the evolutionary dynamics of both cells and collectives. We show that larger bottlenecks simply slow the dynamics, but, at some point, which depends on the parameters of the within-patch model, the direction of evolution towards the equilibrium reverses. Introduction of random fluctuations in bottleneck sizes with some positive probability of smaller sizes counteracts this, even when the probability of smaller bottlenecks is minimal. |
Keywords: | Ecological scaffolding Stochastic model Evolutionary transition in individuality Major transition |
Rights: | © 2023 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/bync-nd/4.0/). |
DOI: | 10.1016/j.jtbi.2023.111414 |
Grant ID: | http://purl.org/au-research/grants/arc/DE160100690 http://purl.org/au-research/grants/arc/DE210100303 |
Published version: | http://dx.doi.org/10.1016/j.jtbi.2023.111414 |
Appears in Collections: | Mathematical Sciences publications |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
hdl_137880.pdf | Published version | 1.62 MB | Adobe PDF | View/Open |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.