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Evolution of individual variation in a competitive trait : a theoretical analysis
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Reinhold, Klaus, Eigentler, Lukas and Kikuchi, David W (2024) Evolution of individual variation in a competitive trait : a theoretical analysis. Journal of Evolutionary Biology . voae036. doi:10.1093/jeb/voae036 ISSN 1010-061X. (In Press)
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Official URL: https://doi.org/10.1093/jeb/voae036
Abstract
When competitive traits are costly, negative frequency dependence can maintain genetic variance. Most theoretical studies examining this problem assume binary polymorphisms, yet most trait variation in wild populations is continuous. We propose that continuous trait variation can result from continuous variation in resource quality and that, specifically, the shape of the resource distribution determines trait maintenance. We used an individual-based model to test which conditions favour the stable maintenance of variation and which cause temporal fluctuations in trait values. This approach, inspired by contrasting outcomes of previous studies regarding variance and fluctuations in trait values, clearly showed a decisive role played by the shape of resource distributions. Under extreme conditions, e.g., the absence of resource variation or with very scarce resources for weak competitors, traits evolved to a single non-competitive or highly competitive strategy, respectively. Most other distributions led to strong temporal fluctuations on trait values or the maintenance of stable, standing variation. Our results thus explain the contradicting outcomes of previous theoretical studies and, at the same time, provide hypotheses to explain the maintenance of genetic variation and individual differences. We suggest ways to empirically test the proposed effects of resource variation on trait maintenance.
Item Type: | Journal Article | ||||||
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Subjects: | Q Science > QA Mathematics Q Science > QH Natural history |
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Divisions: | Faculty of Science, Engineering and Medicine > Science > Mathematics | ||||||
SWORD Depositor: | Library Publications Router | ||||||
Library of Congress Subject Headings (LCSH): | Variation (Biology), Evolutionary genetics, Evolution (Biology) -- Mathematics | ||||||
Journal or Publication Title: | Journal of Evolutionary Biology | ||||||
Publisher: | Oxford University Press | ||||||
ISSN: | 1010-061X | ||||||
Official Date: | 23 March 2024 | ||||||
Dates: |
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Article Number: | voae036 | ||||||
DOI: | 10.1093/jeb/voae036 | ||||||
Status: | Peer Reviewed | ||||||
Publication Status: | In Press | ||||||
Re-use Statement: | This is the peer reviewed version of the following article: Klaus Reinhold, Lukas Eigentler, David W Kikuchi, Evolution of individual variation in a competitive trait: a theoretical analysis, Journal of Evolutionary Biology, 2024;, voae036, which has been published in final form at https://doi.org/10.1093/jeb/voae036. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. This article may not be enhanced, enriched or otherwise transformed into a derivative work, without express permission from Wiley or by statutory rights under applicable legislation. Copyright notices must not be removed, obscured or modified. The article must be linked to Wiley’s version of record on Wiley Online Library and any embedding, framing or otherwise making available the article or pages thereof by third parties from platforms, services and websites other than Wiley Online Library must be prohibited. | ||||||
Access rights to Published version: | Restricted or Subscription Access | ||||||
Date of first compliant deposit: | 22 April 2024 |
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