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Adopting adoption

Avital1, Jablonka, Lachmann

  • 1Department of Natural Sciences, David Yellin Teachers' College

Animal Behaviour
|December 16, 1998
PubMed
Summary

Adoption in birds and mammals may spread through social learning of parenting behaviors, even without direct selective advantage. This study proposes adoption can also facilitate mate choice for offspring through a novel

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Area of Science:

  • Evolutionary Biology
  • Animal Behavior
  • Behavioral Ecology

Background:

  • Adoption is common in birds and mammals, posing an evolutionary puzzle.
  • While benefits to adoptees are clear, benefits to adopters and the spread of adoptive behaviors are less understood.
  • Previous explanations focused on direct/indirect benefits and inter-offspring conflict.

Purpose of the Study:

  • To explore the role of social learning in the spread of adoption behaviors.
  • To propose a new hypothesis for the adaptive significance of adoption.
  • To investigate the evolutionary origins and functions of adoption in animals.

Main Methods:

  • Utilized simple models to simulate the spread of adoptive behaviors.
  • Focused on the transfer of learned information, specifically parenting styles, through social learning.
  • Introduced the 'match-making' hypothesis as an additional explanation for adoption's adaptive significance.

Main Results:

  • Learning parenting from non-parents can promote the spread of adoption, even without a selective advantage.
  • Adoption offers benefits to both adopters and adoptees.
  • The 'match-making' hypothesis suggests adoption can provide genetically unrelated, ecologically compatible mates for offspring.

Conclusions:

  • Adoption in birds and mammals can be a mechanism for transferring learned behaviors, including parenting styles.
  • Social learning plays a crucial role in the evolutionary spread of adoption.
  • Adoption may serve an adaptive function in facilitating future mate selection for offspring.

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