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Maternal effects and parent-offspring conflict.

Bram Kuijper1, Rufus A Johnstone2

  • 1Environment and Sustainability Institute, University of Exeter, Penryn Campus, Penryn TR10 9FE, United Kingdom.

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|December 7, 2017
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Summary
This summary is machine-generated.

Parent-offspring conflict can disrupt how mothers inform their young about the environment. This conflict often leads to breakdown in maternal effects, limiting offspring adaptation and information transfer.

Keywords:
Epigeneticsinformationinheritancematernal hormonenongenetic effectstransgenerational effect

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Area of Science:

  • Evolutionary biology
  • Behavioral ecology
  • Genetics

Background:

  • Maternal effects transmit environmental information but can be manipulated.
  • Parent-offspring conflict arises when parental and offspring interests diverge.

Purpose of the Study:

  • To model the evolution of maternal effects under parent-offspring conflict.
  • To predict how conflict resolution impacts offspring local adaptation.

Main Methods:

  • Evolutionary game theory modeling.
  • Analysis of parent-offspring phenotype mixture strategies.

Main Results:

  • Parent-offspring conflict destabilizes maternal effects.
  • Mothers win by limiting information when hedging bets.
  • Conflict leads to signaling breakdown when offspring favor extreme phenotypes.
  • Offspring win only when favoring less extreme mixtures, gaining full information.

Conclusions:

  • Parent-offspring conflict frequently causes partial or complete breakdown of informative maternal effects.
  • Disruption of maternal information transfer is a common outcome.
  • Understanding conflict dynamics is key to predicting offspring adaptation.