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[Insecticide resistance in bedbugs(Cimex lectularius) in Korea]
Chul Hwan Cha1, Ki Sun Ham, Jong June Yoon
1Department of Preventive Medicine and Institute of Tropical Medicine, College of Medicine, Seoul National University, Korea.
Summary
Bed bugs in Korea show developing resistance to insecticides like DDT and Dieldrin. This study measured resistance levels, finding significant increases compared to susceptible strains.
Area of Science:
- Medical Entomology
- Pest Management
Background:
- Insecticide resistance in bed bugs (Cimex lectularius) poses a significant public health challenge.
- Monitoring resistance is crucial for effective pest control strategies.
Purpose of the Study:
- To assess the susceptibility of adult female bed bugs in Korea to DDT and Dieldrin.
- To quantify the level of insecticide resistance in this population.
Main Methods:
- Laboratory study conducted from July to October 1969.
- Continuous exposure of bed bug residues method using impregnated papers.
- Comparison with London laboratory susceptible strain and Israel resistant strain.
Main Results:
- LC50 values determined: 2.839% for DDT and 0.167% for Dieldrin.
- Resistance levels: 2.4–2.9 times for DDT and 1.6–2.4 times for Dieldrin compared to susceptible strains.
- Susceptibility noted: 1.4 times for DDT and 180 times for Dieldrin compared to a resistant strain.
Conclusions:
- Evidence of emerging insecticide resistance in Korean bed bug populations.
- DDT and Dieldrin resistance levels require careful consideration for control measures.
- Further research needed to track resistance trends and develop alternative strategies.