Parasites, Hosts and Diseases

The Korea Society for Parasitology and Tropical Medicine (대한기생충학·열대의학회)
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Monitoring of Pyrethroid Resistance Allele Frequency in the Common Bed Bug (Cimex lectularius) in the Republic of Korea

  • Cho, Susie (Department of Agricultural Biotechnology, Seoul National University) ;
  • Kim, Heung-Chul (Force Health Protection and Preventive Medicine, Medical Department Activity-Korea/ 65th Medical Brigade, Unit 15281, APO AP 96271-5281) ;
  • Chong, Sung-Tae (Force Health Protection and Preventive Medicine, Medical Department Activity-Korea/ 65th Medical Brigade, Unit 15281, APO AP 96271-5281) ;
  • Klein, Terry A. (Force Health Protection and Preventive Medicine, Medical Department Activity-Korea/ 65th Medical Brigade, Unit 15281, APO AP 96271-5281) ;
  • Kwon, Deok Ho (Research Institute for Agriculture and Life Sciences, Seoul National University) ;
  • Lee, Si Hyeock (Department of Agricultural Biotechnology, Seoul National University) ;
  • Kim, Ju Hyeon (Research Institute for Agriculture and Life Sciences, Seoul National University)
  • Received : 2019.10.22
  • Accepted : 2019.12.12
  • Published : 2020.02.29
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Abstract

Two-point mutations (V419L and L925I) on the voltage-sensitive sodium channel of bed bugs (Cimex lectularius) are known to confer pyrethroid resistance. To determine the status of pyrethroid resistance in bed bugs in Korea, resistance allele frequencies of bed bug strains collected from several US military installations in Korea and Mokpo, Jeollanamdo, from 2009-2019 were monitored using a quantitative sequencing. Most bed bugs were determined to have both of the point mutations except a few specimens, collected in 2009, 2012 and 2014, having only a single point mutation (L925I). No susceptible allele was observed in any of the bed bugs examined, suggesting that pyrethroid resistance in bed bug populations in Korea has reached a serious level. Large scale monitoring is required to increase our knowledge on the distribution and prevalence of pyrethroid resistance in bed bug populations in Korea. Based on present study, it is urgent to restrict the use of pyrethroids and to introduce effective alternative insecticides. A nation-wide monitoring program to determine the pyrethroid resistance level in bed bugs and to select alternative insecticides should be implemented.

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