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| Registros recuperados : 14 | |
| Registros recuperados : 14 | |
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Registro Completo
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Biblioteca(s): |
Embrapa Gado de Corte. |
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Data corrente: |
08/11/2013 |
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Data da última atualização: |
08/11/2013 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
B - 1 |
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Autoria: |
BARROS, A. T. M. de; SCHUMAKER, T. T. S.; KOLLER, W. W.; KLAFKE, G. M.; ALBUQUERQUE, T. A. de; GONZALEZ, R. |
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Título: |
Mechanisms of pyrethroid resistance in Haematobia irritans (Muscidae) from Mato Grosso do Sul state, Brazil. |
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Ano de publicação: |
2013 |
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Fonte/Imprenta: |
Revista Brasileira de Parasitologia Veterinária v. 22, n. 1, p. 136-142, 2013. |
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ISSN: |
0103-846X |
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Idioma: |
Português |
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Conteúdo: |
Horn fly resistance to pyrethroid insecticides occurs throughout Brazil, but knowledge about the involved mechanisms is still in an incipient stage. This survey was aimed to identify the mechanisms of horn fly resistance to cypermethrin in Mato Grosso do Sul state, Brazil. Impregnated filter paper bioassays using cypermethrin, synergized or not with piperonyl butoxide (PBO) and triphenyl phosphate (TPP), were conducted from March 2004 to June 2005 in horn fly populations (n = 33) from all over the state. All populations were highly resistant to cypermethrin, with resistance factors (RF) ranging from 89.4 to 1,020.6. Polymerase chain reaction (PCR) assays to detect the knockdown resistance (kdr) mutation also were performed in 16 samples. The kdr mutation was found in 75% of the tested populations, mostly with relatively low frequencies (<20%), and was absent in some highly resistant populations. Addition of TPP did not significantly reduce the LC50 in any population. However, PBO reduced LC50s above 40-fold in all tested populations, resulting in RFs ? 10 in most cases. Horn fly resistance to cypermethrin is widespread in the state, being primarily caused by an enhanced activity of P450 mono-oxygenases and secondarily by reduced target site sensitivity. |
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Palavras-Chave: |
Horn fly; Kdr; Metabolic resistance; Mosca-dos-chifres; Resistência a inseticidas; Resistência metabólica. |
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Thesaurus NAL: |
insecticide resistance. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/92232/1/Antonio-Thadeu-Medeiros-Barros-0103-846X-rbpv-00-00-240.pdf
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Marc: |
LEADER 02144naa a2200277 a 4500
001 1970876
005 2013-11-08
008 2013 bl uuuu u00u1 u #d
022 $a0103-846X
100 1 $aBARROS, A. T. M. de
245 $aMechanisms of pyrethroid resistance in Haematobia irritans (Muscidae) from Mato Grosso do Sul state, Brazil.$h[electronic resource]
260 $c2013
520 $aHorn fly resistance to pyrethroid insecticides occurs throughout Brazil, but knowledge about the involved mechanisms is still in an incipient stage. This survey was aimed to identify the mechanisms of horn fly resistance to cypermethrin in Mato Grosso do Sul state, Brazil. Impregnated filter paper bioassays using cypermethrin, synergized or not with piperonyl butoxide (PBO) and triphenyl phosphate (TPP), were conducted from March 2004 to June 2005 in horn fly populations (n = 33) from all over the state. All populations were highly resistant to cypermethrin, with resistance factors (RF) ranging from 89.4 to 1,020.6. Polymerase chain reaction (PCR) assays to detect the knockdown resistance (kdr) mutation also were performed in 16 samples. The kdr mutation was found in 75% of the tested populations, mostly with relatively low frequencies (<20%), and was absent in some highly resistant populations. Addition of TPP did not significantly reduce the LC50 in any population. However, PBO reduced LC50s above 40-fold in all tested populations, resulting in RFs ? 10 in most cases. Horn fly resistance to cypermethrin is widespread in the state, being primarily caused by an enhanced activity of P450 mono-oxygenases and secondarily by reduced target site sensitivity.
650 $ainsecticide resistance
653 $aHorn fly
653 $aKdr
653 $aMetabolic resistance
653 $aMosca-dos-chifres
653 $aResistência a inseticidas
653 $aResistência metabólica
700 1 $aSCHUMAKER, T. T. S.
700 1 $aKOLLER, W. W.
700 1 $aKLAFKE, G. M.
700 1 $aALBUQUERQUE, T. A. de
700 1 $aGONZALEZ, R.
773 $tRevista Brasileira de Parasitologia Veterinária$gv. 22, n. 1, p. 136-142, 2013.
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Embrapa Gado de Corte (CNPGC) |
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