نوع مقاله : مقاله پژوهشی
نویسندگان
1 دانشجوی دکترای تخصصی ،گروه پاتوبیولوژی دانشکده دامپزشکی، دانشگاه ارومیه، ارومیه، ایران
2 گروه پاتوبیولوژی ،دانشکده دامپزشکی ،دانشگاه ارومیه، ارومیه،ایران
3 گروه پاتوبیولوژی، دانشکده دامپزشکی ،دانشگاه ارومیه،ارومیه، ایران
4 گروه پاتوبیولوژی، دانشکده دامپزشکی، دانشگاه ارومیه،ارومیه،ایران
5 دانشجوی پسا دکتری،گروه بهداشت و مواد غذایی،دانشکده دامپزشکی، دانشگاه ارومیه، ارومیه،ایران
چکیده
کلیدواژهها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
The present study was aimed to assess the house fly susceptibility to pyrethroid insecticides using molecular analysis. Flies were collected from poultry farms in four different cities of West Azerbaijan and were transferred to the laboratory to evaluate their resistance to pyrethroids using insecticide resistance bioassay. Genomic DNA was extracted from susceptible and resistant flies. Using a technique called polymerase chain reaction (PCR) amplification of specific allele (PASA), PCR was employed to reveal the presence of allelegenetic variations in the para-type sodium channel (para) gene to recognize knockdown resistance (kdr) mutation from the homozygous type of complete susceptibility (sus/sus) to the mutated-homozygous type of complete resistance (kdr/kdr) or to the mutated-heterozygous type (kdr/sus). In this study, these genotypes were targeted using specific primers to identify these genetic variations. The results of bioassay showed more than 50% resistance in all studied populations , and the highest level of resistance was reported from houseflies in Urmia city (86%). A polymerase chain reaction test for identifying kdr homo- or heterozygote house flies was used to determine the frequency of kdr. The L1014 F allele was found in all populations tested. The frequency of KDR in the studied populations was high and varied from 37% to 81%.The maximum percentage (71%) of homozygous genotype (kdr/kdr) occurred at Urmia, followed by Takab (61%), and the minimum percentage occurred at Sardasht (30%). Flies with kdr/kdr genotype were identified in all tested populations
کلیدواژهها [English]