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Registro Completo |
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Biblioteca(s): |
Embrapa Pantanal. |
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Data corrente: |
25/02/2000 |
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Data da última atualização: |
31/03/2017 |
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Autoria: |
JAMROZ, R. C.; GUERRERO, F. D.; KAMMLAH, D. M.; KUNZ, S. E. |
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Título: |
Role of the kdr and super-kdr sodium channel mutations in pyrethroid resistance: correlation of allelic frequency to resistance level in wild and laboratory populations of horn flies (Haematobia irritans). |
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Ano de publicação: |
1998 |
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Fonte/Imprenta: |
Insect Biochemistry and Molecular Biology, v.28, p.1031-1037, 1998. |
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Idioma: |
Inglês |
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Conteúdo: |
The kdr and super-kdr point mutations found in the insect sodium channel gene are postulated to confer knockdown resistance (kdr) to pyrethroids. Using an allele-specific PCR assay to detect these mutations in individual horn flies, Haematobia irritans (L.), we determined ~the allelic frequency of the kdr and super-kdr mutations in several wild and laboratory populations. Wild populations with very similar allelic frequencies had resistance levels that ranged widely from 3- to 18-fold relative toa susceptible population. Conversely, the kdr allele frequency in a lab population with 17-fold resistance was nearly double thar found in a heavily pressured wild population with 18-fold resistance. We conclude that, althought the kdr mutation confers significant levels of pyrethroid resistance, a subtantial component of resistance in insecticidally pressured populations is conferred by mechanisms that are PBO-suppressible. High super-kdr allele frequencies were detected in two resistant lab populations, but in wild populations with equivalent resistance the super-kdr allele frequency was very low. Interestingly, in over 1200 individuals assayed, the super-kdr mutation was never detected in the absence of the kdr mutation. |
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Palavras-Chave: |
Canal de sodio; Horn fly; Insect; Mosca-do-chifre; Pyrethroid resistance; Sodium channel. |
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Thesagro: |
Haematobia Irritans; Inseto; População. |
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Thesaurus Nal: |
population. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02115naa a2200277 a 4500
001 1799784
005 2017-03-31
008 1998 bl --- 0-- u #d
100 1 $aJAMROZ, R. C.
245 $aRole of the kdr and super-kdr sodium channel mutations in pyrethroid resistance$bcorrelation of allelic frequency to resistance level in wild and laboratory populations of horn flies (Haematobia irritans).
260 $c1998
520 $aThe kdr and super-kdr point mutations found in the insect sodium channel gene are postulated to confer knockdown resistance (kdr) to pyrethroids. Using an allele-specific PCR assay to detect these mutations in individual horn flies, Haematobia irritans (L.), we determined ~the allelic frequency of the kdr and super-kdr mutations in several wild and laboratory populations. Wild populations with very similar allelic frequencies had resistance levels that ranged widely from 3- to 18-fold relative toa susceptible population. Conversely, the kdr allele frequency in a lab population with 17-fold resistance was nearly double thar found in a heavily pressured wild population with 18-fold resistance. We conclude that, althought the kdr mutation confers significant levels of pyrethroid resistance, a subtantial component of resistance in insecticidally pressured populations is conferred by mechanisms that are PBO-suppressible. High super-kdr allele frequencies were detected in two resistant lab populations, but in wild populations with equivalent resistance the super-kdr allele frequency was very low. Interestingly, in over 1200 individuals assayed, the super-kdr mutation was never detected in the absence of the kdr mutation.
650 $apopulation
650 $aHaematobia Irritans
650 $aInseto
650 $aPopulação
653 $aCanal de sodio
653 $aHorn fly
653 $aInsect
653 $aMosca-do-chifre
653 $aPyrethroid resistance
653 $aSodium channel
700 1 $aGUERRERO, F. D.
700 1 $aKAMMLAH, D. M.
700 1 $aKUNZ, S. E.
773 $tInsect Biochemistry and Molecular Biology$gv.28, p.1031-1037, 1998.
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Registro original: |
Embrapa Pantanal (CPAP) |
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| 1. |  | CARIAS, C. M. de O.; GRAVINA, G. do A.; FERRAO, M. A. G.; FONSECA, A. F. A. da; FERRÃO, R. G.; VIVAS, M.; VIANA, A. P. Predição de ganhos genéticos via modelos mistos em progênies de café Conilon. Coffee Science, Lavras, v. 11, n. 1, p. 39-45, jan./mar. 2016.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 2 |
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