Journal ArticleDOI
Insecticide Resistance Mechanisms of Brazilian Aedes aegypti Populations from 2001 to 2004
Isabela Reis Montella,Ademir Jesus Martins,Priscila Fernandes Viana-Medeiros,José Bento Pereira Lima,Ima Aparecida Braga,Denise Valle +5 more
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TLDR
In Brazil, Aedes aegypti resistance to temephos, used since 1967, was detected in several municipalities in 2000, and Gluthathione-S-transferase alteration was encountered only in the northeast region in 2001, spreading the entire country thereafter.Abstract:
In Brazil, Aedes aegypti resistance to temephos, used since 1967, was detected in several municipalities in 2000. Organophosphates were substituted by pyrethroids against adults and, in some localities, by Bti against larvae. However, high temephos resistance ratios were still detected between 2001 and 2004. Field-simulated assays confirmed a low temephos residual effect. Acethylcholinesterase and Mixed Function Oxidase profiles were not altered. In contrast, higher Esterase activity, studied with three substrates, was found in all examined populations collected in 2001. From 2001 to 2004, a slight reduction in α-Esterase (EST) and β-EST activity together with a gradual increase of p-nitrophenyl acetate (PNPA)-EST was noted. Gluthathione-S-transferase alteration was encountered only in the northeast region in 2001, spreading the entire country thereafter. In general, except for α-EST and β-EST, only one enzyme class was altered in each mosquito specimen. Data are discussed in the context of historic application of insecticides in Brazil.read more
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The classification of esterases: an important gene family involved in insecticide resistance - A review
TL;DR: Joint genomic, biochemical and microarray studies will help unravel the classification of this complex gene family, which appears to be rapidly evolving and each insect species has a unique complement of detoxification genes with only a few orthologues across species.
Journal ArticleDOI
Insecticide resistance in Aedes aegypti populations from Ceará, Brazil
Estelita Pereira Lima,Marcelo Henrique Santos Paiva,Ana Paula de Araújo,Ellyda Vanessa Gomes da Silva,Ulisses Mariano da Silva,Lúcia Nogueira de Oliveira,Antônio Euzébio Goulart Santana,Clarisse Nogueira Barbosa,Clovis C de Paiva Neto,Craig S. Wilding,Constância Flávia Junqueira Ayres,Maria Alice Varjal de Melo Santos +11 more
TL;DR: Two A. aegypti populations from Ceará are under strong selection pressure by temephos, compromising the field effectiveness of this organophosphate, and resistance to cypermethrin is shown in two of the three populations studied.
Insecticide resistance in dengue vectors
TL;DR: The lack of publicly accessible standardized data sets dcoumenting levels of insecticide resistance in many dengue endemic countries, and the absence of studies on the operational impact of resistance, preculdes a comprehensive analysis of the current global threat that insecticides resistance poses to d Dengue control.
Journal ArticleDOI
Assessing the Effects of Aedes aegypti kdr Mutations on Pyrethroid Resistance and Its Fitness Cost
Luiz Paulo Brito,Jutta Linss,Tamara Nunes Lima-Camara,Thiago Affonso Belinato,Thiago Affonso Belinato,Alexandre A. Peixoto,Alexandre A. Peixoto,José Bento Pereira Lima,Denise Valle,Denise Valle,Ademir Jesus Martins,Ademir Jesus Martins +11 more
TL;DR: The results strongly suggest that the Ae.
Journal ArticleDOI
Global genetic diversity of Aedes aegypti
Andrea Gloria-Soria,Diego Ayala,Ambicadutt Bheecarry,Olger Calderón-Arguedas,Dave D. Chadee,Marina B. Chiappero,Maureen Coetzee,Khouaildi Bin Elahee,Ildefonso Fernández-Salas,Hany A. Kamal,Basile Kamgang,Emad I.M. Khater,Laura D. Kramer,Vicki L. Kramer,Alma Lopez-Solis,Joel Lutomiah,Ademir Jesus Martins,María Victoria Micieli,Christophe Paupy,Alongkot Ponlawat,Nil Rahola,Syed Basit Rasheed,Joshua B. Richardson,Amag A. Saleh,Rosa M. Sanchez-Casas,Gonçalo Seixas,Carla A. Sousa,Walter J. Tabachnick,Adriana Troyo,Jeffrey R. Powell +29 more
TL;DR: This study provides a reference database of genetic diversity that can be used to determine the likely origin of new introductions that occur regularly for this invasive species Ae.
References
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Journal ArticleDOI
Insecticide Resistance in Insect Vectors of Human Disease
Janet Hemingway,Hilary Ranson +1 more
TL;DR: State-of-the-art information on resistance in insect vectors of disease is reviewed and new strategies to develop novel strategies with which to truly manage resistance are proposed.
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Journal ArticleDOI
Serum esterases. 1. Two types of esterase (A and B) hydrolysing p-nitrophenyl acetate, propionate and butyrate, and a method for their determination
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The molecular biology of knockdown resistance to pyrethroid insecticides
TL;DR: Results of these studies identify voltage-sensitive sodium channel genes orthologous to the para gene of Drosophila melanogaster as the site of multiple knockdown resistance mutations and define the molecular mechanisms by which these mutations cause pyrethroid resistance.
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