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Although having five different ways of transmission the vector-borne is the principal way of transmission of Chagas disease,which involves insects of the subfamily Triatominae (Hemiptera:Reduviidae).Nineteen of the 31 species that occur in Mexico are associated with humans,and all are capable of transmitting the disease.Pyrethroids are the insecticides recommended for the control of these vectors in Mexico.We determined the susceptibility to the pyrethroids deltamethrin and permethrin of peridomestic populations of Triatoma mazzottii Usinger and two populations of Triatoma longipennis Usinger in comparison with a reference strain for each species.Bioassays were performed for the determination of the LD50 for both field populations and reference strains.A maximum of 27 fold resistance to deltamethrin was observed in T.mazzottii,meanwhile,for permethrin,T.longipennis from Jalisco show the highest value of 3.19 fold.There was significantly increased activity ofesterases in field populations in comparison with their corresponding reference strain.The results of the search of kdr mutations related to the resistance to deltamethrin and permethrin in the evaluated species show the presence of mutations in the field populations,as is the case with individuals of T.mazzottii,for which the mutation was found A943V,and for the two populations of T.longipennis included in this study,we report the presence of the kdr mutation K964R.Evaluation of the various mechanisms involved in resistance to pyrethroids in triatomines from Mexico could guide us to the real justification for insecticide resistance monitoring.
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篇名 Novel Kdr mutations (K964R and A943V) in pyrethroid-resistant populations of Triatoma mazzottii and Triatoma longipennis from Mexico and detoxifying enzymes
来源期刊 中国昆虫科学(英文版) 学科
关键词 detoxifying enzymes kdr pyrethroids Triatoma longipennis Triatoma mazzottii
年,卷(期) 2019,(5) 所属期刊栏目
研究方向 页码范围 809-820
页数 12页 分类号
字数 语种 英文
DOI 10.1111/1744-7917.12594
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detoxifying enzymes
kdr
pyrethroids
Triatoma longipennis
Triatoma mazzottii
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中国昆虫科学(英文版)
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1672-9609
11-3386/Q
北京北辰西路1号院
eng
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