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| Aguirre-Obando,Oscar Alexander; Pietrobon,Anna Julia; Bona,Ana Caroline Dalla; Navarro-Silva,Mário Antônio. |
| ABSTRACT After a dengue outbreak, the knowledge on the extent, distribution and mechanisms of insecticide resistance is essential for successful insecticide-based dengue control interventions. Therefore, we evaluated the potential changes to insecticide resistance in natural Aedes aegypti populations to Organophosphates (OP) and Pyrethroids (PY) after chemical vector control interventions. After a Dengue outbreak in 2010, A. aegypti mosquitoes from the urban area of Jacarezinho (Paraná, Brazil) were collected in 2011 and 2012. Insecticide resistance to OP Temephos was assessed in 2011 and 2012 by dose–response bioassays adopting WHO-based protocols. Additionally, in both sampling, PY resistance was also investigated by the Val1016Ile mutation genotyping.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bioassays; Dengue; Insecticide resistance; Knockdown resistance; Pyrethroids; Temephos. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262016000100094 |
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| Bona,Ana C. Dalla; Piccoli,Carla F.; Leandro,André de S.; Kafka,Rosinei; Twerdochilib,Adriana L.; Navarro-Silva,Mário A.. |
| The genetic variability of populations of Aedes (Stegomyia) aegypti (Linnaeus, 1762) is often low due to the intense selection pressure caused by chemical control measures. In this study, we evaluated the susceptibility of larvae and adults of this mosquito to chemical insecticides, the frequency of the Val1016IIe mutation, and the genetic variability of the mitochondrial ND4 gene fragment in the urban area of Foz do Iguaçu, Paraná. The populations of A. aegypti in the southern and central regions of the city were resistant to the diagnostic dose of temephos 0.0162 ppm. Additionally, we detected difference in susceptibility in the northern population. The resistance ratios (RR95) were 3.8, 4.1, and 4.6 for the populations in the north, central, and south... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Knockdown resistance; Mitochondrial DNA; Pyrethroids; Temephos. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702012000600005 |
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| Aguirre-Obando,Oscar A.; Bona,Ana C. Dalla; Duque L.,Jonny E.; Navarro-Silva,Mário A.. |
| Mosquito control prevails as the most efficient method to protect humans from the dengue virus, despite recent efforts to find a vaccine for this disease. We evaluated insecticide resistance and genetic variability in natural populations of Aedes aegypti (Linnaeus, 1762) from Colombia. This is the first Colombian study examining kdr mutations and population structure. Bioassays with larvae of three mosquito populations (Armenia, Calarcá and Montenegro) were performed according to the World Health Organization (WHO) guidelines, using Temephos. For the analysis of the Val1016Ile mutation and genetic diversity, we sampled recently-emerged adults from four mosquito populations (Armenia, Calarcá, Montenegro and Barcelona). Following the WHO protocol, bioassays... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bioassays; Gene flow; Knockdown resistance; Mitochondrial DNA; ND4 gene. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702015000100014 |
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| BRITO, L. G.; OLIVEIRA, M. C. de S.; BARBIERI, F. da S.; IBELLI, A. M. G.; SILVA, I. F. da; SANTOS, A. P. L. dos; SILVA, R. R. da; GUERRERO, F.. |
| A fim de validar a aplicabilidade de utilização das sequências nucleotídicas diagnósticas identificadas para as populações brasileiras da mosca-dos-chifres, análises fenotípicas da resistência a piretroides foram realizadas para a triagem de espécimes resistentes ao pesticida, os quais posteriormente foram submetidos à análises moleculares a fim de caracterizar a presença das mutações tipo kdr e skdr nas populações brasileiras de H. irritans. |
| Tipo: Folhetos |
Palavras-chave: Mosca-dos-chifres; Knockdown resistance; Resistência a inseticida; Haematobia Irritans. |
| Ano: 2013 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1013353 |
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