Conditional reproductive strategies under variable environmental conditions

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Gyllenberg , M , Hanski , I & Lindstrom , T 2017 , ' Conditional reproductive strategies under variable environmental conditions ' , Annales Zoologici Fennici , vol. 54 , no. 1-4 , pp. 193-204 .

Title: Conditional reproductive strategies under variable environmental conditions
Author: Gyllenberg, Mats; Hanski, Ilkka; Lindstrom, Torsten
Contributor organization: Department of Mathematics and Statistics
Date: 2017-04
Language: eng
Number of pages: 12
Belongs to series: Annales Zoologici Fennici
ISSN: 0003-455X
Abstract: Within the framework of adaptive dynamics we consider the evolution by natural selection of reproductive strategies in which individuals may adjust their reproductive behaviour in response to changing environmental conditions. As a specific example we considered a discrete-time model in which possible fluctuations in the environmental conditions are caused by predator-prey interaction. Our main findings include: (1) Coexistence between two fixed strategies (i.e., strategies that do not adjust to changing environmental conditions) is impossible; there exists a best fixed strategy, which invades and ousts all other fixed strategies. (2) A necessary condition for conditional (adjustable) strategies to evolve is that there are fluctuations in the environmental conditions. Predator-prey interactions may cause such fluctuations and under natural assumptions there exists an optimal conditional strategy which is uninvadable and invades and ousts all other strategies.
1181 Ecology, evolutionary biology
111 Mathematics
Peer reviewed: Yes
Rights: cc_by
Usage restriction: openAccess
Self-archived version: publishedVersion

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