The feedback between selection and demography shapes genomic diversity during coevolution

Retel, Cas; Kowallik, Vienna; Huang, Weini; Werner, Benjamin; Künzel, Sven; Becks, Lutz; Feulner, Philine G. D. (2019). The feedback between selection and demography shapes genomic diversity during coevolution. Science Advances, 5(10), eaax0530. American Association for the Advancement of Science 10.1126/sciadv.aax0530

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Species interactions and coevolution are integral to ecological communities, but we lack empirical information on when and how these interactions generate and purge genetic diversity. Using genomic time series data from host-virus experiments, we found that coevolution occurs through consecutive selective sweeps in both species, with temporal consistency across replicates. Sweeps were accompanied by phenotypic change (resistance or infectivity increases) and expansions in population size. In the host, population expansion enabled rapid generation of genetic diversity in accordance with neutral processes. Viral molecular evolution was, in contrast, confined to few genes, all putative targets of selection. This study demonstrates that molecular evolution during species interactions is shaped by both eco-evolutionary feedback dynamics and interspecific differences in how genetic diversity is generated and maintained.

Item Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Department of Biology > Institute of Ecology and Evolution (IEE)
08 Faculty of Science > Department of Biology > Institute of Ecology and Evolution (IEE) > Aquatic Ecology

UniBE Contributor:

Retel, Cas and Feulner, Philine

Subjects:

500 Science > 570 Life sciences; biology

ISSN:

2375-2548

Publisher:

American Association for the Advancement of Science

Language:

English

Submitter:

Marcel Häsler

Date Deposited:

08 Oct 2019 11:08

Last Modified:

25 Oct 2019 02:44

Publisher DOI:

10.1126/sciadv.aax0530

BORIS DOI:

10.7892/boris.133769

URI:

https://boris.unibe.ch/id/eprint/133769

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