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The evolution of parental effects when selection acts on fecundity versus viability

View ORCID ProfileBram Kuijper, Rufus A. Johnstone
doi: https://doi.org/10.1101/741835
Bram Kuijper
1Centre for Ecology & Conservation, College of Life and Environmental Sciences, University of Exeter, Penryn TR10 9FE, United Kingdom
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  • ORCID record for Bram Kuijper
  • For correspondence: a.l.w.kuijper@exeter.ac.uk
Rufus A. Johnstone
2Behaviour and Evolution Group, Department of Zoology, University of Cambridge, Downing Street, Cambridge CB2 3EJ, United Kingdom
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Abstract

Most predictions on the evolution of adaptive parental effects and phenotypic memory exclusively focus on the role of the abiotic environment. How parental effects are affected by population demography and life history is less well understood. To overcome this, we use an analytical model to assess whether selection acting on fecundity versus viability affects the evolution of parental effects in a viscous population experiencing a spatiotemporally varying environment. We find that parental effects commonly evolve in regimes of viability selection, but are less likely to evolve in regimes of fecundity selection. In regimes of viability selection, an individual’s phenotype becomes correlated with its local environment during its lifetime, as those individuals with a locally adapted phenotype are more likely to survive until parenthood. Hence, a parental phenotype rapidly becomes an informative cue about its local environment, favoring the evolution of parental effects. By contrast, in regimes of fecundity selection, locally maladapted and adapted parents survive at equal rates, so that the parental phenotype, by itself, is not informative about the local environment. Correlations between phenotype and environment still arise, but only when more fecund, locally adapted individuals leave more successfully established offspring to the local patch. Hence, correlations take at least two generations to develop, making them more sensitive to distortion by environmental change or competition with immigrant offspring. Hence, we conclude that viability selection is most conducive to the evolution of adaptive parental effects in spatially structured populations.

Footnotes

  • ↵4 raj1003{at}hermes.cam.ac.uk

  • https://zenodo.org/record/3372450#.XVwpAPx7nu0

Copyright 
The copyright holder for this preprint is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. It is made available under a CC-BY 4.0 International license.
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Posted August 21, 2019.
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The evolution of parental effects when selection acts on fecundity versus viability
Bram Kuijper, Rufus A. Johnstone
bioRxiv 741835; doi: https://doi.org/10.1101/741835
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The evolution of parental effects when selection acts on fecundity versus viability
Bram Kuijper, Rufus A. Johnstone
bioRxiv 741835; doi: https://doi.org/10.1101/741835

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