Game theory in biology: 50 years and onwards

Area of Science:

• Evolutionary biology
• Behavioral ecology
• Game theory

Background:

• Game theory in biology emerged 50 years ago with the evolutionarily stable strategy (ESS) concept.
• ESS explains limited conflict in animal intraspecific interactions, contrasting with group selection theories.
• The ESS framework has been applied to diverse evolutionary phenomena including cooperation and contest behavior.

Purpose of the Study:

• To review the achievements of game theory in explaining animal behavior, focusing on contest behavior and cooperation.
• To evaluate the effectiveness of game-theoretical approaches in understanding the evolution of cooperation in non-human animals.
• To identify future research directions and emphasize the integration of realistic behavioral mechanisms into evolutionary game models.

Main Methods:

• Literature review and synthesis of existing research on evolutionary game theory in biology.
• Focus on studies addressing contest behavior and cooperation in animal populations.
• Critical evaluation of the explanatory power of game-theoretical models.

Main Results:

• Game theory, particularly ESS, has successfully explained limited conflict and frequency-dependent selection in various biological contexts.
• The application of game theory to cooperation and signaling has been significantly influenced by economic models.
• The field has achieved many of its initial ambitions, but further integration of behavioral realism is needed.

Conclusions:

• Evolutionary game theory provides a powerful framework for understanding animal behavior, especially contest dynamics and cooperation.
• While successful, the field benefits from incorporating more nuanced and realistic behavioral mechanisms into theoretical models.
• Future research should continue to explore the evolutionary game-theoretical underpinnings of animal interactions and cooperation.