Investigation of resistance to synthetic pyrethroids in Blattella germanica L., 1767 (Blattodea: Ectobiidae) and Periplaneta americana L., 1758 (Blattodea: Blattidae) populations in Turkey


TURKIYE ENTOMOLOJI DERGISI-TURKISH JOURNAL OF ENTOMOLOGY, vol.45, no.3, pp.361-370, 2021 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 45 Issue: 3
  • Publication Date: 2021
  • Doi Number: 10.16970/entoted.927130
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, BIOSIS, CAB Abstracts, Veterinary Science Database
  • Page Numbers: pp.361-370
  • Keywords: American cockroach, German cockroach, insecticides, nymph, susceptibility, INSECTICIDE RESISTANCE, COCKROACH DICTYOPTERA, TOXICITY, SUSCEPTIBILITY, PERMETHRIN
  • Akdeniz University Affiliated: Yes


Cockroaches are widespread pests found in many houses and other buildings. They are known as a vector of many agents of disease like bacteria, viruses and fungi. The repeated usage of persistent and non-biodegradable insecticides has caused resistance in most of the cockroach populations. In this research, the resistance levels of five Blattella germanica L., 1767 (Blattodea: Ectobiidae) and five Periplaneta americana L., 1758 (Blattodea: Blattidae) cockroach populations against some synthetic pyrethroid insecticides (deltamethrin, permethrin, alpha-cypermethrin and lambda-cyhalothrin) were determined between 2014 and 2018 in Turkey. The resistance tests were performed by the standard glass jar surface method as recommended by World Health Organization. By exposing the test chemicals of the second and third instar nymphs of the cockroaches for 1 h, the median lethal dose 50% (LD50) values, resistance ratios (RR) and resistance status were specified. The P. americana populations were all susceptible to tested chemicals with resistance ratios between 1 and 2-fold. In B. germanica populations, the toxic effects of tested chemicals were found very low and resistance status was found moderate (RR 7.7-9.0-fold) or high (RR >= 18.5-fold). This research is the most comprehensive study of the resistance status of the cockroaches in Turkey. In order to prevent the resistance to chemicals, the integrated pest management approach should be prioritized and chemical control should be kept at the lowest level.