Does Drought Increase the Risk of Insects Developing Behavioral Resistance to Systemic Insecticides?

Area of Science:

• Agricultural Science
• Environmental Science
• Entomology

Background:

• Climate change is increasing drought frequency and severity, impacting agriculture.
• Insect pest populations and their behavior are also affected by changing environmental conditions.
• Drought's indirect effects on pesticide performance and pest resistance are understudied.

Purpose of the Study:

• To hypothesize how drought affects systemic insecticide performance.
• To explore the link between drought, reduced pesticide efficacy, and behavioral resistance in insect pests.
• To highlight the need for research on environmental factors influencing pesticide resistance.

Main Methods:

• This is an opinion-based article discussing existing research.
• Hypothesizing mechanisms of drought's impact on insecticide translocation.
• Reviewing and discussing studies supporting the proposed hypothesis.

Main Results:

• Drought is hypothesized to decrease systemic insecticide uptake in plants.
• Drought may increase non-uniform insecticide distribution within plants.
• These effects could lead to reduced pesticide performance and increased pest behavioral resistance.

Conclusions:

• Drought conditions may reduce the efficacy of systemic insecticides.
• Insect pests may evolve behavioral resistance by avoiding treated plant parts.
• Further research is crucial to understand environmental impacts on insecticide performance and resistance evolution.