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Registro Completo |
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Biblioteca(s): |
Embrapa Arroz e Feijão. |
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Data corrente: |
18/10/1994 |
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Data da última atualização: |
31/03/2005 |
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Autoria: |
YOKOYAMA, M. |
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Título: |
Danos da cigarrinha verde Empoasca kraemeri Ross & Moore, 1957, sobre a produção do feijoeiro. |
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Ano de publicação: |
1993 |
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Fonte/Imprenta: |
In: REUNIÃO NACIONAL DE PESQUISA DE FEIJÃO, 4., 1993, Londrina. Resumos. Londrina: IAPAR, 1993. |
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Páginas: |
Resumo 9. |
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Idioma: |
Português |
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Palavras-Chave: |
Cigarrinha-Verde. |
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Thesagro: |
Empoasca Kraemeri; Feijão; Inseto; Phaseolus Vulgaris; Praga. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 00596naa a2200193 a 4500
001 1197604
005 2005-03-31
008 1993 bl uuuu u00u1 u #d
100 1 $aYOKOYAMA, M.
245 $aDanos da cigarrinha verde Empoasca kraemeri Ross & Moore, 1957, sobre a produção do feijoeiro.
260 $c1993
300 $aResumo 9.
650 $aEmpoasca Kraemeri
650 $aFeijão
650 $aInseto
650 $aPhaseolus Vulgaris
650 $aPraga
653 $aCigarrinha-Verde
773 $tIn: REUNIÃO NACIONAL DE PESQUISA DE FEIJÃO, 4., 1993, Londrina. Resumos. Londrina: IAPAR, 1993.
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Registro original: |
Embrapa Arroz e Feijão (CNPAF) |
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Registro Completo
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Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
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Data corrente: |
08/11/2017 |
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Data da última atualização: |
23/09/2019 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
MONTEIRO, J. P.; SANTOS, J. M. L. dos; VASCONCELOS, J. F.; FROTA, G. A.; ANDRÉ, W. P. P.; RIBEIRO, W. L. C.; MELO, A. C. F. L.; TEIXEIRA, M.; VIEIRA, L. da S.; BEVILAQUA, C. M. L. |
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Afiliação: |
JOMAR PATRICIO MONTEIRO, CNPC; Jessica Maria Leite dos Santos, Universidade Estadual do Ceará (UECe) - Fortaleza, CE, Brazil; Janaelia Ferreira Vasconcelos, Universidade Estadual do Vale do Acaraú (UVA) -Sobral, CE, Brazil; Gracielle Araújo Frota; Weibson Paz Pinheiro Andre, UECe - Fortaleza, CE, Brazil; Wesley Lyeverton Correia Ribeiro, UECe - Fortaleza, CE, Brazil; Ana Carolina Fonseca Lindoso Melo; MARCEL TEIXEIRA, CNPC; LUIZ DA SILVA VIEIRA, CNPC; Claudia Maria Leal Bevilaqua, UECe - Fortaleza, CE, Brazil. |
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Título: |
Molecular development of oxfendazole resistance starting with a susceptible Haemonchus contortus isolate. |
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Ano de publicação: |
2017 |
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Fonte/Imprenta: |
In: INTERNATIONAL CONFERENCE OF THE WORLD ASSOCIATION FOR THE ADVANCEMENT OF VETERINARY PARASITOLOGY, 26., 2017, Kuala Lumpur, Malaysia. Abstract book. Perth: WAAVP, 2017.p. 516. Abstract 4588. |
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Idioma: |
Inglês |
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Notas: |
In conjunction with 53rd MSPTM Annual Conference. |
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Conteúdo: |
Abstract: Haemonchus contortus is one of the main small ruminant parasites in tropical areas and its control is traditionally done through the utilization of synthetic anthelmintics such as benzimidazoles (BZ). BZ resistance is associated to single nucleotide polymorphisms (SNP) located in the Beta-tubulin isotype 1 gene: F200Y, F167Y and E198A. Here we describe the rise of resistant mutations within a completely susceptible isolate (Inbred-susceptible-Edinburgh - ISE) in an experimental infection model in 3 sheep treated with increasing oxfendazole doses. After initial infection and rise in fecal egg counts, the drug regimen started with subdoses as low as 30% of the recommended dosage and were gradually increased to 100% over the course of a year. Experimental animals were infected every 1.5 months with 5,000 L3 larvae cultured from feces collected one week after each treatment. After an initial period when resistance was only detected in the F200Y locus, both resistant polymorphisms (F200Y and F167Y) were detected in increasing frequencies after each treatment. Eventually resistance at F200Y stationed at frequencies around 70% and decreased while resistance frequencies at F167Y kept rising and finally stationed at around 75%. Resistance at E198A was never detected in the studied period. Our study provide insights into the speed as to which each polymorphism may rise as BZ dosage increases converting a susceptible parasite population into a highly resistant one within a short time period. MenosAbstract: Haemonchus contortus is one of the main small ruminant parasites in tropical areas and its control is traditionally done through the utilization of synthetic anthelmintics such as benzimidazoles (BZ). BZ resistance is associated to single nucleotide polymorphisms (SNP) located in the Beta-tubulin isotype 1 gene: F200Y, F167Y and E198A. Here we describe the rise of resistant mutations within a completely susceptible isolate (Inbred-susceptible-Edinburgh - ISE) in an experimental infection model in 3 sheep treated with increasing oxfendazole doses. After initial infection and rise in fecal egg counts, the drug regimen started with subdoses as low as 30% of the recommended dosage and were gradually increased to 100% over the course of a year. Experimental animals were infected every 1.5 months with 5,000 L3 larvae cultured from feces collected one week after each treatment. After an initial period when resistance was only detected in the F200Y locus, both resistant polymorphisms (F200Y and F167Y) were detected in increasing frequencies after each treatment. Eventually resistance at F200Y stationed at frequencies around 70% and decreased while resistance frequencies at F167Y kept rising and finally stationed at around 75%. Resistance at E198A was never detected in the studied period. Our study provide insights into the speed as to which each polymorphism may rise as BZ dosage increases converting a susceptible parasite population into a highly resistant one within a sh... Mostrar Tudo |
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Palavras-Chave: |
Beta tubulin; Dosage effects; Resistance to anthelmintics; SNP. |
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Thesagro: |
Anti-Helmíntico; Haemonchus contortus; Resistência química. |
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Thesaurus NAL: |
Anthelmintics; Drug resistance; Oxfendazole. |
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Categoria do assunto: |
H Saúde e Patologia |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/166452/1/CNPC-2017-Molecular.pdf
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Marc: |
LEADER 02735nam a2200349 a 4500
001 2079254
005 2019-09-23
008 2017 bl uuuu u00u1 u #d
100 1 $aMONTEIRO, J. P.
245 $aMolecular development of oxfendazole resistance starting with a susceptible Haemonchus contortus isolate.$h[electronic resource]
260 $aIn: INTERNATIONAL CONFERENCE OF THE WORLD ASSOCIATION FOR THE ADVANCEMENT OF VETERINARY PARASITOLOGY, 26., 2017, Kuala Lumpur, Malaysia. Abstract book. Perth: WAAVP, 2017.p. 516. Abstract 4588.$c2017
500 $aIn conjunction with 53rd MSPTM Annual Conference.
520 $aAbstract: Haemonchus contortus is one of the main small ruminant parasites in tropical areas and its control is traditionally done through the utilization of synthetic anthelmintics such as benzimidazoles (BZ). BZ resistance is associated to single nucleotide polymorphisms (SNP) located in the Beta-tubulin isotype 1 gene: F200Y, F167Y and E198A. Here we describe the rise of resistant mutations within a completely susceptible isolate (Inbred-susceptible-Edinburgh - ISE) in an experimental infection model in 3 sheep treated with increasing oxfendazole doses. After initial infection and rise in fecal egg counts, the drug regimen started with subdoses as low as 30% of the recommended dosage and were gradually increased to 100% over the course of a year. Experimental animals were infected every 1.5 months with 5,000 L3 larvae cultured from feces collected one week after each treatment. After an initial period when resistance was only detected in the F200Y locus, both resistant polymorphisms (F200Y and F167Y) were detected in increasing frequencies after each treatment. Eventually resistance at F200Y stationed at frequencies around 70% and decreased while resistance frequencies at F167Y kept rising and finally stationed at around 75%. Resistance at E198A was never detected in the studied period. Our study provide insights into the speed as to which each polymorphism may rise as BZ dosage increases converting a susceptible parasite population into a highly resistant one within a short time period.
650 $aAnthelmintics
650 $aDrug resistance
650 $aOxfendazole
650 $aAnti-Helmíntico
650 $aHaemonchus contortus
650 $aResistência química
653 $aBeta tubulin
653 $aDosage effects
653 $aResistance to anthelmintics
653 $aSNP
700 1 $aSANTOS, J. M. L. dos
700 1 $aVASCONCELOS, J. F.
700 1 $aFROTA, G. A.
700 1 $aANDRÉ, W. P. P.
700 1 $aRIBEIRO, W. L. C.
700 1 $aMELO, A. C. F. L.
700 1 $aTEIXEIRA, M.
700 1 $aVIEIRA, L. da S.
700 1 $aBEVILAQUA, C. M. L.
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Embrapa Caprinos e Ovinos (CNPC) |
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