The sterile insect technique is protected from evolution of mate discrimination

Area of Science:

• Ecology
• Evolutionary Biology
• Mathematical Modeling

Background:

• The sterile insect technique (SIT) suppresses pest populations by releasing sterile males to sterilize wild females.
• Concerns exist regarding the evolution of resistance, specifically female discrimination against sterile males.

Purpose of the Study:

• To mathematically model and assess the likelihood of resistance evolution against SIT.
• To investigate if female discrimination can evolve to counteract SIT's effectiveness.

Main Methods:

• Development of mathematical models analyzing SIT dynamics.
• Simulation of constant-release and proportional-release protocols.
• Inclusion of female discrimination as a resistance mechanism.

Main Results:

• Female discrimination evolves too slowly to prevent population collapse under constant-release SIT.
• SIT remains effective against discrimination if applied continuously and appropriately.
• Proportional-release protocols and premature SIT cessation can facilitate resistance evolution.

Conclusions:

• SIT is generally robust against mate discrimination evolution.
• Careful program design is crucial to avoid pitfalls that allow resistance.
• Mathematical insights aid in designing effective and sustainable SIT programs.