Scared to evolve? Non-consumptive effects drive rapid adaptive evolution in a natural prey population

Chao Zhang, Eyerusalem Goitom, Kristien Brans, Luc De Meester, Robby Stoks

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2 Citaten (Scopus)

Samenvatting

Predators can strongly influence prey populations through both consumptive and non-consumptive effects. Nevertheless, most studies have focused on the consumptive effects in driving evolutionary changes. By integrating experimental evolution and resurrection ecology, we tested the roles of non-consumptive and consumptive effects in driving evolution in a Daphnia magna population that experienced strong changes in fish predation pressure. All resurrected genotypes were pooled, inoculated in outdoor mesocosms, and exposed to free-fish or caged-fish treatments. Non-consumptive effects induced rapid, repeatable changes in the clonal composition and associated genotypic trait changes that were similar in magnitude and direction to those imposed by killing. Both non-consumptive and consumptive effects caused a shift towards a dominance of the high-fish period clones that can perform better under fish predation, and this may be explained by the higher intrinsic growth rate of the high-fish period clones under predation risk. The genotypic trait changes (e.g. reduced body sizes, earlier maturation, more and smaller offspring) of the Daphnia in the mesocosm experiments were in the same direction as the adaptive trait shifts observed in situ through resurrection ecology. Our results demonstrate that non-consumptive effects can induce rapid adaptive evolution and may represent an overlooked driver of eco-evolutionary dynamics. Our results demonstrate that non-consumptive effects can induce rapid adaptive evolution and may represent an overlooked driver of eco-evolutionary dynamics.

Originele taal-2English
Artikelnummer1974
Pagina's (van-tot)1-1
Aantal pagina's1
TijdschriftProceedings. Biological sciences.
Volume289
Nummer van het tijdschrift1974
DOI's
StatusPublished - 2022

Bibliografische nota

Funding Information:
Financial support came from National Natural Science Foundation of China (grant no. 42007229), China Postdoctoral Science Foundation (grant no. 2019M662337), Post-doctoral Innovation Research Program of Shandong Province and Qingdao (grant no. 236346), the Fundamental Research Funds of Shandong University (grant no. 2019HW031), Research Grants from FWO Flanders (grant no. G.0943.15) and the KU Leuven Research Fund (grant no. C16/17/002). Acknowledgements

Publisher Copyright:
© 2022 Royal Society Publishing. All rights reserved.

Copyright:
Copyright 2022 Elsevier B.V., All rights reserved.

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