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  The effect of habitat choice on evolutionary rescue in subdivided populations

Czuppon, P., Blanquart, F., Uecker, H., & Débarre, F. (2021). The effect of habitat choice on evolutionary rescue in subdivided populations. The American Naturalist, 197(6), 625-643. doi:10.1086/714034.

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 Creators:
Czuppon, Peter1, Author           
Blanquart, Francois, Author
Uecker, Hildegard2, Author           
Débarre, Florence, Author
Affiliations:
1Department Evolutionary Theory, Max Planck Institute for Evolutionary Biology, Max Planck Society, ou_1445641              
2Research Group Stochastic Evolutionary Dynamics, Department Evolutionary Theory, Max Planck Institute for Evolutionary Biology, Max Planck Society, ou_2640692              

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Free keywords: evolutionary rescue; local adaptation; source-sink dynamics; dispersal gene flow; habitat choice
 Abstract: Evolutionary rescue is the process by which a declining population successfully adapts genetically to avoid extinction. In a structured environment that deteriorates patch by patch, dispersal can substantially alter the chances of evolutionary rescue of a wild-type population not viable in deteriorated patches. Here, we investigate the effect of different dispersal schemes and intensities on the probability of successful establishment of a mutant population adapted to the deteriorated environment. We find that the probability of evolutionary rescue can undergo up to three phases when increasing the rate of dispersal: (i) at low dispersal rates, the probability of establishment of a mutant population increases; (ii) then at intermediate dispersal rates the establishment probability decreases; and (iii) at large dispersal rates, the population homogenizes, either promoting or suppressing the process of evolutionary rescue, depending on the fitness difference between the mutant and the wild type. Our results show that habitat choice, when compared to uniform dispersal, impedes successful adaptation when the mutant has the same habitat preference as the wild type, but promotes adaptation when the mutant mainly immigrates into patches where it has a growth advantage over the wild type.

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Language(s): eng - English
 Dates: 2019-10-062020-08-262021-02-022021-04-142021-06
 Publication Status: Published in print
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 Rev. Type: -
 Identifiers: DOI: 10.1086/714034
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Title: The American Naturalist
Source Genre: Journal
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Publ. Info: University of Chicago Press
Pages: - Volume / Issue: 197 (6) Sequence Number: - Start / End Page: 625 - 643 Identifier: ISSN: 0003-0147
CoNE: https://pure.mpg.de/cone/journals/resource/954925378925_1