08 اسفند 1403
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مرکز تحقیقات رادیولوژی نوین و تهاجمی

دانشگاه علوم پزشکی تهران

  • تاریخ انتشار : 1403/12/08 - 08:04
  • تعداد بازدید : 2
  • زمان مطالعه : 1 دقیقه

Evaluation of the knockdown resistance locus (kdr) in Anopheles stephensi (Diptera: Culicidae) in southeastern Iran

knockdown resistance locus (kdr) in Anopheles stephensi  {faces}

Background & objectives: The resistance to insecticide among Anopheles stephensi population due to insecticide selection pressure has been previously reported from Iran. The current study was performed to evaluate the susceptibility of different insecticide reagents against An. stephensi by bioassay and molecular methods in Saravan County, a malaria-endemic area in southeastern Iran.

Methods: An. stephensi mosquitoes were collected from different larval habitats in Saravan City, southeastern Iran in 2022. At first, the susceptibility of collected samples for DDT, permethrin, and deltamethrin were evaluated by bioassay test. The collected mosquitoes were then evaluated for the presence of different kdr mutations.

Results: Insecticide susceptibility tests were conducted on the field population of An. stephensi from Saravan, revealing its potential resistance to pyrethroids and DDT. Of the 150 An. stephensi samples, 4 % carried the kdr L1014F mutation as heterozygous and the rest of them were homozygous L1014 wild type.

Interpretation & conclusion: The current study revealed the presence of L1014F mutation for the first time in Iran. So, further monitoring of kdr mutations in the VGSC gene and resistance phenotypes should be performed.

  • Article_DOI : 10.4103/0972-9062.383648
  • نویسندگان : ramtin hajibeygi , seyed zia hejripour ,nader taghavi, mohammad darvishi
  • گروه خبر : پژوهش,research article
  • کد خبر : 291290
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