Asymmetric public goods game cooperation through pest control

Area of Science:

• Game Theory
• Agricultural Economics
• Ecology

Background:

• Cooperation in public goods games is vital for resource management.
• Previous research has largely overlooked the impact of agent asymmetry.
• Pest control in agriculture often relies on collective action.

Purpose of the Study:

• To investigate the game theoretic model of cooperation for pest control among farmers.
• To analyze the impact of asymmetry in a public goods game setting.
• To determine farmer cost strategies at Nash equilibrium in an asymmetric model.

Main Methods:

• Developed a game theoretic model of cooperation for pest control.
• Simulated farmers with adjacent paddies on a line, with pest outbreak at one end.
• Derived farmer cost strategies at Nash equilibrium for an asymmetric public goods game.

Main Results:

• Asymmetry in farmer incentives leads to unexpected outcomes in pest control cooperation.
• Individual costs at equilibrium exhibit threshold behavior, not a direct increase with future valuation.
• Increasing the number of farmers can paradoxically decrease pest prevention effectiveness.

Conclusions:

• Asymmetric public goods games in pest control can lead to unsustainable land use.
• The farmer at highest risk pays a disproportionately high cost.
• Cooperative strategies need to account for spatial asymmetry and risk distribution.