Evolutionary game theory as a framework for studying biological invasions

Area of Science:

• Ecology
• Evolutionary Biology
• Theoretical Ecology

Background:

• Biological invasions threaten biodiversity.
• Current ecoevolutionary frameworks for studying invasions are insufficient.
• Understanding invasion dynamics requires integrating ecological and evolutionary processes.

Purpose of the Study:

• To propose a novel conceptual framework for studying species invasions.
• To integrate ecological and evolutionary dynamics using game theory and evolutionarily stable strategy (ESS).
• To develop mechanistic hypotheses for invasion vulnerability and success.

Main Methods:

• Utilizing game theory and the concept of evolutionarily stable strategy (ESS).
• Formalizing the evolutionary contexts of invaders relative to recipient communities.
• Modeling both ecological and adaptive dynamics of interacting species.

Main Results:

• Identified pathways where recipient communities lack an ESS, indicating vulnerability to invasion.
• Demonstrated how invaders can exploit these vulnerabilities.
• Showcased how the ESS concept generates hypotheses for invasion outcomes (biodiversity changes, species replacement, evolution).

Conclusions:

• The ESS framework offers a powerful tool for understanding invasion ecology and evolution.
• This approach provides mechanistic insights into biodiversity responses to invasions.
• It facilitates predictions regarding species replacement and adaptive evolutionary changes post-invasion.