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Registro Completo
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Biblioteca(s): |
Embrapa Gado de Leite. |
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Data corrente: |
22/12/2021 |
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Data da última atualização: |
22/12/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 1 |
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Autoria: |
VALE, L.; PAULA, L. G. F. de; VIEIRA, M. S.; ALVES, S. das G. A.; MORAES JUNIOR, N. R. de; GOMES, M. D. F.; TEIXEIRA, W. F. P.; RIZZO, P. V.; FREITAS, F. M. C.; FERREIRA, L. L.; LOPES, W. D. Z.; MONTEIRO, C. |
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Afiliação: |
LETÍCIA VALE, Universidade Federal de Goias; LUIZA GABRIELLA FERREIRA DE PAULA, Universidade Federal de Goiás; MIRNA SECCHIS VIEIRA, Universidade Federal de Goiás; SUSY DAS GRAÇAS ALECRIM ALVES, Universidade Federal de Goiás; NELIO ROBERTO DE MORAES JUNIOR, Universidade Federal de Goiás; MARCOS DANIEL FILGUEIRAS GOMES, Universidade Federal de Goiás; WESLEN FABRÍCIO PIRES TEIXEIRA, Universidade Federal de Goiás; PRICILA VETRANO RIZZO, CNPGL; FERNANDA MARA CUNHA FREITAS, CNPGL; LORENA LOPES FERREIRA, Universidade Federal de Minas Gerais; WELBER DANIEL ZANETTI LOPES, Universidade Federal de Goiás; CAIO MONTEIRO, Universidade Federal de Goiás. |
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Título: |
Binary combinations of thymol, carvacrol and eugenol for Amblyomma sculptum control: Evaluation of in vitro synergism and effectiveness under semi-field conditions. |
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Ano de publicação: |
2021 |
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Fonte/Imprenta: |
Ticks and Tick-borne Diseases, v. 12, 101816, 2021. |
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DOI: |
https://doi.org/10.1016/j.ttbdis.2021.101816 |
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Idioma: |
Inglês |
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Conteúdo: |
This study aimed to investigate the in vitro acaricidal effect of thymol, carvacrol and eugenol (binary combinations) and their synergistic effect on unfed larvae and nymphs of Amblyomma sculptum, estimate the cost to prepare a formulation with these compounds, and evaluate the formulations under semi-field conditions against A. sculptum larvae. To evaluate the acaricidal effect of the compounds alone or their binary combinations (1:1 ratio) the larval packet test was performed using six concentrations (0.3125 to 10.0 mg/mL) for larvae and seven concentrations (2.5 to 20.0 mg/mL) for nymphs. The cost to produce 1 L of thymol, carvacrol and eugenol solutions, combined or alone, was estimated. In the semi-field test, formulations were sprayed on Panicum maximum plots experimentally infested with unfed A. sculptum larvae. In the in vitro tests with larvae, a synergistic effect (synergism and moderate synergism) was observed for thymol + eugenol at all concentrations tested, while thymol + carvacrol and eugenol + carvacrol showed a synergistic effect at the concentration of 5.0 mg/mL. In the in vitro tests with nymphs, thymol + eugenol, thymol + carvacrol and carvacrol + eugenol showed a synergistic effect (synergism and moderate synergism) at a concentration of 5.0 mg/mL and higher. Combining the compounds reduced the concentrations required to obtain mortality rate above 95%, resulting in lower costs. Under semi-field conditions, the treatments with thymol + eugenol and carvacrol + eugenol showed efficacies of 63.2% and 42.6%, respectively. We conclude that, depending on the concentrations, the binary combinations of thymol, carvacrol and eugenol have a synergistic acaricidal effect on unfed A. sculptum larvae and nymphs, and under semi-field conditions the associations between thymol + eugenol and carvacrol + eugenol were effective against A. sculptum larvae. MenosThis study aimed to investigate the in vitro acaricidal effect of thymol, carvacrol and eugenol (binary combinations) and their synergistic effect on unfed larvae and nymphs of Amblyomma sculptum, estimate the cost to prepare a formulation with these compounds, and evaluate the formulations under semi-field conditions against A. sculptum larvae. To evaluate the acaricidal effect of the compounds alone or their binary combinations (1:1 ratio) the larval packet test was performed using six concentrations (0.3125 to 10.0 mg/mL) for larvae and seven concentrations (2.5 to 20.0 mg/mL) for nymphs. The cost to produce 1 L of thymol, carvacrol and eugenol solutions, combined or alone, was estimated. In the semi-field test, formulations were sprayed on Panicum maximum plots experimentally infested with unfed A. sculptum larvae. In the in vitro tests with larvae, a synergistic effect (synergism and moderate synergism) was observed for thymol + eugenol at all concentrations tested, while thymol + carvacrol and eugenol + carvacrol showed a synergistic effect at the concentration of 5.0 mg/mL. In the in vitro tests with nymphs, thymol + eugenol, thymol + carvacrol and carvacrol + eugenol showed a synergistic effect (synergism and moderate synergism) at a concentration of 5.0 mg/mL and higher. Combining the compounds reduced the concentrations required to obtain mortality rate above 95%, resulting in lower costs. Under semi-field conditions, the treatments with thymol + eugenol and carvac... Mostrar Tudo |
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Palavras-Chave: |
Amblyomma sculptum; Timol. |
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Thesagro: |
Acaricida; Larva; Ninfa. |
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Thesaurus NAL: |
Carvacrol; Eugenol; Phenylpropanoids; Ticks. |
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Categoria do assunto: |
O Insetos e Entomologia |
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Marc: |
LEADER 03009naa a2200373 a 4500
001 2138233
005 2021-12-22
008 2021 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1016/j.ttbdis.2021.101816$2DOI
100 1 $aVALE, L.
245 $aBinary combinations of thymol, carvacrol and eugenol for Amblyomma sculptum control$bEvaluation of in vitro synergism and effectiveness under semi-field conditions.$h[electronic resource]
260 $c2021
520 $aThis study aimed to investigate the in vitro acaricidal effect of thymol, carvacrol and eugenol (binary combinations) and their synergistic effect on unfed larvae and nymphs of Amblyomma sculptum, estimate the cost to prepare a formulation with these compounds, and evaluate the formulations under semi-field conditions against A. sculptum larvae. To evaluate the acaricidal effect of the compounds alone or their binary combinations (1:1 ratio) the larval packet test was performed using six concentrations (0.3125 to 10.0 mg/mL) for larvae and seven concentrations (2.5 to 20.0 mg/mL) for nymphs. The cost to produce 1 L of thymol, carvacrol and eugenol solutions, combined or alone, was estimated. In the semi-field test, formulations were sprayed on Panicum maximum plots experimentally infested with unfed A. sculptum larvae. In the in vitro tests with larvae, a synergistic effect (synergism and moderate synergism) was observed for thymol + eugenol at all concentrations tested, while thymol + carvacrol and eugenol + carvacrol showed a synergistic effect at the concentration of 5.0 mg/mL. In the in vitro tests with nymphs, thymol + eugenol, thymol + carvacrol and carvacrol + eugenol showed a synergistic effect (synergism and moderate synergism) at a concentration of 5.0 mg/mL and higher. Combining the compounds reduced the concentrations required to obtain mortality rate above 95%, resulting in lower costs. Under semi-field conditions, the treatments with thymol + eugenol and carvacrol + eugenol showed efficacies of 63.2% and 42.6%, respectively. We conclude that, depending on the concentrations, the binary combinations of thymol, carvacrol and eugenol have a synergistic acaricidal effect on unfed A. sculptum larvae and nymphs, and under semi-field conditions the associations between thymol + eugenol and carvacrol + eugenol were effective against A. sculptum larvae.
650 $aCarvacrol
650 $aEugenol
650 $aPhenylpropanoids
650 $aTicks
650 $aAcaricida
650 $aLarva
650 $aNinfa
653 $aAmblyomma sculptum
653 $aTimol
700 1 $aPAULA, L. G. F. de
700 1 $aVIEIRA, M. S.
700 1 $aALVES, S. das G. A.
700 1 $aMORAES JUNIOR, N. R. de
700 1 $aGOMES, M. D. F.
700 1 $aTEIXEIRA, W. F. P.
700 1 $aRIZZO, P. V.
700 1 $aFREITAS, F. M. C.
700 1 $aFERREIRA, L. L.
700 1 $aLOPES, W. D. Z.
700 1 $aMONTEIRO, C.
773 $tTicks and Tick-borne Diseases$gv. 12, 101816, 2021.
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