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Evol Appl

Title:		Trapped by habitat choice: Ecological trap emerging from adaptation in an evolutionary experiment
Author(s):		Mortier F; Bonte D;
Address:		Terrestrial Ecology Unit Department of Biology Ghent University Ghent Belgium
Journal Title:		Evol Appl
Year:		2020
Volume:		20200328
Issue:		8
Page Number:		1877 - 1887
DOI:		10.1111/eva.12937
ISSN/ISBN:		1752-4571 (Print) 1752-4571 (Electronic) 1752-4571 (Linking)
Abstract:		"Individuals moving in heterogeneous environments can improve their fitness considerably by habitat choice. Induction by past exposure, genetic preference alleles and comparison of local performances can all drive this decision-making process. Despite the importance of habitat choice mechanisms for eco-evolutionary dynamics in metapopulations, we lack insights on the connection of their cue with its effect on fitness optimization. We selected a laboratory population of Tetranychus urticae Koch (two-spotted spider mite) according to three distinct host-choice selection treatments for ten generations. Additionally, we tested the presence of induced habitat choice mechanisms and quantified the adaptive value of a choice before and after ten generations of artificial selection in order to gather insight on the habitat choice mechanisms at play. Unexpectedly, we observed no evolution of habitat choice in our experimental system: the initial choice of cucumber over tomato remained. However, this choice became maladaptive as tomato ensured a higher fitness at the end of the experiment. Furthermore, a noteworthy proportion of induced habitat choice can modify this ecological trap depending on past environments. Despite abundant theory and applied relevance, we provide the first experimental evidence of an emerging trap. The maladaptive choice also illustrates the constraints habitat choice has in rescuing populations endangered by environmental challenges or in pest control"
Keywords:		adaptation ecological trap eco-evolutionary dynamics habitat choice habitat selection maladaptation plant-herbivory interactions;
Notes:		"PubMed-not-MEDLINEMortier, Frederik Bonte, Dries eng England 2020/09/11 Evol Appl. 2020 Mar 28; 13(8):1877-1887. doi: 10.1111/eva.12937. eCollection 2020 Sep"