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| Registros recuperados : 29 | |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Pantanal. Para informações adicionais entre em contato com cpap.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Pantanal. |
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Data corrente: |
24/10/2000 |
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Data da última atualização: |
24/10/2000 |
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Autoria: |
FOIL, L. D.; BARROS, A. T. M. |
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Afiliação: |
Louisiana State University. Dept. of Entomology (Baton Rouge, LA); Embrapa Pantanal (Corumba, MS). |
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Título: |
The effects of management strategies on resistance in the horn fly, Haematobia irritans. |
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Ano de publicação: |
2000 |
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Fonte/Imprenta: |
In: INTERNATIONAL CONGRESS OF ENTOMOLOGY, 21.; BRAZILIAN CONGRESS OF ENTOMOLOGY, 18., 2000, Foz do Iguassu. Abstracts... Londrina: Embrapa Soja, 2000. v.2, p.761. |
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Idioma: |
Português |
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Conteúdo: |
The effect of different management strategies on insecticide resistance in horn fly populations was evaluated. Weekly fly counts were conducted to evaluate control efficacy of the treatments, and bioassays were conducted at least twice per year to measure fly susceptibility to organophosphates (OP's) and pyrethroid insecticides. Flies studies demonstrated that use of a single class of insecticidal ear tag during the horn fly season resulted in product failure within three to four years for pyrethroids and OP's, respectively. At one site, ear tags impregnated with OP's were used yearly for 10 years; and in a four year period, the efficacy of 20% diazinon-impregnated ear tags was reduced from > 20 to just 1 week of control. Subsequently, mid-summer treatment with ivermectin pour-on apparently reversed resistance to OP's during the following fly season on two different occasions. The yearly alternated use of synergized pyrethroid (lamda-cyhalothrin + piperonyl butoxide) and organophosphate (pirimiphos-methul) ear tags was evaluated for control of two pyrethroid-resistant horn fly populations in Lousiana over a seven year period. Control achieved by synergized pyrethroid ear tag treatments was reduced from seven to two weeks and from four to zero weeks at St. Joseph and Winnsboro, respectively. Control by organophosphate ear tags decreased from fifteen to three weeks and from ten to seven weeks at St. Joseph and Winnsboro, respectively. The yearly rotation of synergized lambda-cyhalothrin and pirimiphos-methyl ear tags did not improve pyrethroid ear tag efficacy or prevent further development of resistance to the pyrethroid or OP compounds. However, a two-year use of organophosphates resulted in partial reversion of pyrethroid resistance. When pyrethroid and organophosphate ear tags were used in a mosaic strategy at two different locations, efficacy of products did not change during a three-year period. MenosThe effect of different management strategies on insecticide resistance in horn fly populations was evaluated. Weekly fly counts were conducted to evaluate control efficacy of the treatments, and bioassays were conducted at least twice per year to measure fly susceptibility to organophosphates (OP's) and pyrethroid insecticides. Flies studies demonstrated that use of a single class of insecticidal ear tag during the horn fly season resulted in product failure within three to four years for pyrethroids and OP's, respectively. At one site, ear tags impregnated with OP's were used yearly for 10 years; and in a four year period, the efficacy of 20% diazinon-impregnated ear tags was reduced from > 20 to just 1 week of control. Subsequently, mid-summer treatment with ivermectin pour-on apparently reversed resistance to OP's during the following fly season on two different occasions. The yearly alternated use of synergized pyrethroid (lamda-cyhalothrin + piperonyl butoxide) and organophosphate (pirimiphos-methul) ear tags was evaluated for control of two pyrethroid-resistant horn fly populations in Lousiana over a seven year period. Control achieved by synergized pyrethroid ear tag treatments was reduced from seven to two weeks and from four to zero weeks at St. Joseph and Winnsboro, respectively. Control by organophosphate ear tags decreased from fifteen to three weeks and from ten to seven weeks at St. Joseph and Winnsboro, respectively. The yearly rotation of synergized lambda-... Mostrar Tudo |
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Palavras-Chave: |
Control; Controle; Flies; Insect; Management; Mosca-dos-chifres. |
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Thesagro: |
Entomologia; Haematobia Irritans; Inseto; Manejo. |
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Thesaurus NAL: |
entomology; livestock. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02759naa a2200277 a 4500
001 1803666
005 2000-10-24
008 2000 bl uuuu u00u1 u #d
100 1 $aFOIL, L. D.
245 $aThe effects of management strategies on resistance in the horn fly, Haematobia irritans.
260 $c2000
520 $aThe effect of different management strategies on insecticide resistance in horn fly populations was evaluated. Weekly fly counts were conducted to evaluate control efficacy of the treatments, and bioassays were conducted at least twice per year to measure fly susceptibility to organophosphates (OP's) and pyrethroid insecticides. Flies studies demonstrated that use of a single class of insecticidal ear tag during the horn fly season resulted in product failure within three to four years for pyrethroids and OP's, respectively. At one site, ear tags impregnated with OP's were used yearly for 10 years; and in a four year period, the efficacy of 20% diazinon-impregnated ear tags was reduced from > 20 to just 1 week of control. Subsequently, mid-summer treatment with ivermectin pour-on apparently reversed resistance to OP's during the following fly season on two different occasions. The yearly alternated use of synergized pyrethroid (lamda-cyhalothrin + piperonyl butoxide) and organophosphate (pirimiphos-methul) ear tags was evaluated for control of two pyrethroid-resistant horn fly populations in Lousiana over a seven year period. Control achieved by synergized pyrethroid ear tag treatments was reduced from seven to two weeks and from four to zero weeks at St. Joseph and Winnsboro, respectively. Control by organophosphate ear tags decreased from fifteen to three weeks and from ten to seven weeks at St. Joseph and Winnsboro, respectively. The yearly rotation of synergized lambda-cyhalothrin and pirimiphos-methyl ear tags did not improve pyrethroid ear tag efficacy or prevent further development of resistance to the pyrethroid or OP compounds. However, a two-year use of organophosphates resulted in partial reversion of pyrethroid resistance. When pyrethroid and organophosphate ear tags were used in a mosaic strategy at two different locations, efficacy of products did not change during a three-year period.
650 $aentomology
650 $alivestock
650 $aEntomologia
650 $aHaematobia Irritans
650 $aInseto
650 $aManejo
653 $aControl
653 $aControle
653 $aFlies
653 $aInsect
653 $aManagement
653 $aMosca-dos-chifres
700 1 $aBARROS, A. T. M.
773 $tIn: INTERNATIONAL CONGRESS OF ENTOMOLOGY, 21.; BRAZILIAN CONGRESS OF ENTOMOLOGY, 18., 2000, Foz do Iguassu. Abstracts... Londrina: Embrapa Soja, 2000.$gv.2, p.761.
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