Eco-friendly fruit fly control through protein-gated mesoporous silica nanoparticles.

Area of Science:

• Agricultural Entomology
• Materials Science
• Nanotechnology

Background:

• Mediterranean fruit fly (Ceratitis capitata) is a significant horticultural pest.
• Insecticide resistance to lambda-cyhalothrin is increasing in C. capitata populations.
• Conventional insecticide applications lead to resistance and environmental concerns.

Purpose of the Study:

• To develop an eco-friendly nanosystem for targeted delivery of lambda-cyhalothrin.
• To overcome insecticide resistance in Mediterranean fruit fly.
• To enhance the stability and efficacy of lambda-cyhalothrin.

Main Methods:

• Fabrication of mesoporous silica nanoparticles loaded with lambda-cyhalothrin.
• Capping nanoparticles with hydrolyzed corn protein for attraction and protection.
• Enzyme-triggered release mechanism activated by fly saliva proteases.
• Field testing on clementine leaves for insecticidal activity and duration.

Main Results:

• The nanosystem demonstrated sustained insecticidal activity for over four weeks.
• The targeted release mechanism ensured activation upon ingestion, minimizing premature degradation.
• Off-target exposure and sublethal dosing were significantly reduced compared to conventional sprays.
• The protein cap attracted protein-feeding insects, enhancing delivery.

Conclusions:

• The developed nanosystem offers a promising eco-friendly solution for controlling Mediterranean fruit fly.
• This nanotechnology approach effectively addresses insecticide resistance and improves delivery efficiency.
• The system enhances insecticide stability and provides prolonged pest control with reduced environmental impact.