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Journal of Arthropod-Borne Diseases، جلد ۶، شماره ۲، صفحات ۱۱۲-۱۱۸
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عنوان انگلیسی Toxicity of Pyrethroid and Organophosphorous Insecticides against Two Field Collected Strains of the German Cockroach Blattella germanica (Blattaria: Blattellidae) from Hospitals in Hamadan, Iran
چکیده انگلیسی مقاله B a ckground: The German cockroach, B lattella germanica is a major hygienic pest and mechanical vector for path- ogenic agents in hospitals and residential areas. The development of insecticide resistance is a serious problem in controlling of this pest. Toxicity of four commonly used insecticides (permethrin, cypermethrin, malathion and chlorpyrifos) against two hospital- collected strains of the German cockroach was investigated. M e t hods: Topical bioassay methods were carried out for detecting insecticide susceptibility of adult male cock- roaches. For each insecticide, four to six concentrations resulting in >0% and < 100% mortality were used. Three to six replicates of 10 cockroaches per concentration were conducted. The differences between LD50 (µ g/g) values were considered statistically significant only when the 95% confidence intervals did not overlap Results: Two hospital- collected strains of the German cockroach showed low to moderate levels of resistance to chlorpyrifos, permethrin, malathion and cypermethrin based on resistance ratios compared with susceptible strain. Conclusion: The low level chlorpyrifos resistance suggesting this insecticide may still provide adequate control of these strains. While the obsereved moderate levels of resistance to cypermethrin could imply developing resistance to this compound.
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نویسندگان مقاله مجتبی لیمویی | mojtaba limoee
depatment of public health, nosocomial infections research center, kermanshah university of medical sciences, kermanshah, iran

سازمان اصلی تایید شده: دانشگاه علوم پزشکی کرمانشاه (Kermanshah university of medical sciences)

بهروز داوری | behroz davari
department of entomology, school of medicine, hamadan university of medical sciences, hamadan, iran and kurdistan university of medical sciences and environment health research center, kurdistan, iran

سازمان اصلی تایید شده: دانشگاه علوم پزشکی همدان (Hamadan university of medical sciences)

سید حسن موسی کاظمی | seyed hassan moosa kazemi
department of medical entomology and vector control, school of public health, tehran university of medical sciences, tehran, iran

سازمان اصلی تایید شده: دانشگاه علوم پزشکی تهران (Tehran university of medical sciences)

نشانی اینترنتی http://jad.tums.ac.ir/index.php/jad/article/view/164
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زبان مقاله منتشر شده en
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نوع مقاله منتشر شده Original Article
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