2013
DOI: 10.1371/journal.pone.0077855
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Multiple Insecticide Resistances in the Disease Vector Culex p. Quinquefasciatus from Western Indian Ocean

Abstract: Several mosquito-borne diseases affect the Western Indian Ocean islands. Culex pipiens quinquefasciatus is one of these vectors and transmits filariasis, Rift Valley and West Nile viruses and the Japanese encephalitis. To limit the impact of these diseases on public health, considerable vector control efforts have been implemented since the 50s, mainly through the use of neurotoxic insecticides belonging to Organochlorines (OC), Organophosphates (OP) and pyrethroids (PYR) families. However, mosquito control fa… Show more

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Cited by 38 publications
(39 citation statements)
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“…The first was an overexpression of esterases, encoded by the Ester 2 allele, and the second was a modification of the AChE1, due to the G119S mutation of the gene ace-1 . Both were found at relatively high frequencies (0.59 for Ester 2 and 0.39 for ace-1 R ; [23]). Similarly, the kdr R allele, coding for a modification of the sodium channels allowing resistance to PYRs was found almost fixed on the entire island ( kdr R frequency = 0.98).…”
Section: Resultsmentioning
confidence: 99%
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“…The first was an overexpression of esterases, encoded by the Ester 2 allele, and the second was a modification of the AChE1, due to the G119S mutation of the gene ace-1 . Both were found at relatively high frequencies (0.59 for Ester 2 and 0.39 for ace-1 R ; [23]). Similarly, the kdr R allele, coding for a modification of the sodium channels allowing resistance to PYRs was found almost fixed on the entire island ( kdr R frequency = 0.98).…”
Section: Resultsmentioning
confidence: 99%
“…Similarly, the kdr R allele, coding for a modification of the sodium channels allowing resistance to PYRs was found almost fixed on the entire island ( kdr R frequency = 0.98). Biochemical tests and bioassays with synergists did not reveal MFO involvement in PYR resistance [23]. The kdr R allele thus appeared to be the main allele responsible for deltamethrin resistance, although the involvement of other metabolic resistance cannot be excluded.…”
Section: Resultsmentioning
confidence: 99%
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“…Heme peroxidase activity has been used to express the levels of general oxidase, which is an indirect measurement of mixed-function oxidase activity based on heme-containing enzymes (Penilla et al, 2007, Etang et al, 2007, Verhaeghen et al, 2009, Pocquet et al, 2013and Marcombe et al, 2014. TMB dihydrochloride hydrate (TMB.2HCl.…”
Section: Mixed-function Oxidase Assay (Based On Hemoprotein)mentioning
confidence: 99%
“…pipiens. 10,43 Further investigations will be carried out in order to confirm the presence of these metabolic resistance mechanisms.…”
Section: Modified Ache1 Is Probably Not the Only Op Resistance Mechanmentioning
confidence: 99%