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Determinants of Insecticide Resistance Evolution: Comparative Analysis Among Heliothines
T K Walsh1,2, D G Heckel3, Yidong Wu4
1CSIRO Black Mountain Laboratories, Canberra, Australian Capital Territory, Australia;
Annual Review of Entomology
|January 7, 2022
Summary
Pest species differ in insecticide resistance development. Ecological factors like host range and management practices influence resistance, potentially creating a pesticide treadmill without careful, area-wide strategies.
Area of Science:
- Agricultural Entomology
- Pest Management Science
- Insecticide Resistance Studies
Background:
- Pest species exhibit significant variation in developing insecticide resistance.
- Understanding the drivers of this variation is crucial for effective pest management.
- Heliothine moths serve as a model system, with distinct resistance profiles among species.
Purpose of the Study:
- To comparatively analyze factors contributing to varying insecticide resistance propensities in heliothine moths.
- To identify key ecological and genetic traits influencing resistance development.
- To evaluate the role of pest management practices in mitigating resistance.
Main Methods:
- Comparative review of six heliothine species (three high-resistance, three low-resistance).
- Analysis of ecological traits (host range, movement) and biochemical/genetic characteristics.
- Examination of pest management practices, including area-wide and cross-pesticide strategies.
Main Results:
- Host range and movement between hosts significantly influence selection intensity for insecticide resistance.
- Area-wide pest management practices, considering ecological factors, are critical for reducing selection pressure.
- Broad-spectrum chemicals, without integrated management, exacerbate resistance in susceptible species.
Conclusions:
- Ecological traits and management strategies are key determinants of insecticide resistance variation in pests.
- Integrated, area-wide management is essential to prevent the development of pesticide resistance.
- Newer chemistries and transgenic crops also require rigorous management to avoid resistance evolution.
