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Registro Completo |
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Biblioteca(s): |
Embrapa Semiárido. |
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Data corrente: |
26/01/2015 |
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Data da última atualização: |
29/03/2016 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
MONTEIRO, V. B.; GONDIM JÚNIOR, M. G. C.; OLIVEIRA, J. E. de M.; SIQUEIRA, H. A. A.; SOUSA, J. M. |
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Afiliação: |
VANESKA B. MONTEIRO, UFRPE; MANOEL G. C. GONDIM JÚNIOR, UFRPE; JOSE EUDES DE MORAIS OLIVEIRA, CPATSA; HERBERT A. A. SIQUEIRA, UFRPE; JOSILENE M. SOUSA, UFRPE. |
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Título: |
Monitoring Tetranychus urticae Koch (Acari: Tetranychidae) resistance to abamectin in vineyards in the Lower Middle Sao Francisco Valley. |
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Ano de publicação: |
2015 |
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Fonte/Imprenta: |
Crop Protection, v. 69, p. 90-96, 2015. |
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DOI: |
10.1016/j.cropro.2014.12.012 |
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Idioma: |
Inglês |
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Conteúdo: |
In the Lower Middle Sao Francisco Valley, Tetranychus urticae Koch is controlled by the application of acaricides; however, the intensive use of these products in this region has caused control failures in the field. In the present study, concentrationeresponse curves were constructed periodically to monitor the toxicity of abamectin to T. urticae in two vineyards over two years. Diagnostic concentrations of 1 mg and 9 mg of abamectin/L water were established based on the monitoring period to detect T. urticae resistance in different vineyards in the region. Concentration-response curves were obtained for abamectin, bifenthrin and carbosulfan for the populations considered resistant to abamectin. T. urticae were confined in arenas on cotyledonary leaf discs from jack bean (Canavalia ensiformis L.) that had been immersed in acaricide solution. Mite mortality was assessed after 48 h of exposure to the acaricides. The lethal concentration (LC) values varied over time in both of the vineyards studied, which was most likely a result of crop management. An additional 35 vineyards were sampled, and 20 additional populations were established. The results indicated that 45% of the populations exposed to the 9 mg/L abamectin diagnostic concentration experienced less than 80% mortality and were considered resistant to abamectin. The frequency of resistant mites ranged from 4.1% to 80.4%. The resistance ratio ranged from 2406-fold to 8272-fold compared to susceptible populations in the laboratory. Resistance to bifenthrin was also confirmed in the present study, though resistance to carbosulfan was not. No cross-resistance between abamectin and bifenthrin was observed though this requires further investigation. MenosIn the Lower Middle Sao Francisco Valley, Tetranychus urticae Koch is controlled by the application of acaricides; however, the intensive use of these products in this region has caused control failures in the field. In the present study, concentrationeresponse curves were constructed periodically to monitor the toxicity of abamectin to T. urticae in two vineyards over two years. Diagnostic concentrations of 1 mg and 9 mg of abamectin/L water were established based on the monitoring period to detect T. urticae resistance in different vineyards in the region. Concentration-response curves were obtained for abamectin, bifenthrin and carbosulfan for the populations considered resistant to abamectin. T. urticae were confined in arenas on cotyledonary leaf discs from jack bean (Canavalia ensiformis L.) that had been immersed in acaricide solution. Mite mortality was assessed after 48 h of exposure to the acaricides. The lethal concentration (LC) values varied over time in both of the vineyards studied, which was most likely a result of crop management. An additional 35 vineyards were sampled, and 20 additional populations were established. The results indicated that 45% of the populations exposed to the 9 mg/L abamectin diagnostic concentration experienced less than 80% mortality and were considered resistant to abamectin. The frequency of resistant mites ranged from 4.1% to 80.4%. The resistance ratio ranged from 2406-fold to 8272-fold compared to susceptible populations in the ... Mostrar Tudo |
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Palavras-Chave: |
Two-spotted; Vale do São Francisco. |
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Thesagro: |
Ácaro; Controle Biológico; Entomologia; Tetranychus Urticae; Uva. |
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Thesaurus Nal: |
Biological control; Grapes. |
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Categoria do assunto: |
O Insetos e Entomologia |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/116511/1/Eudes-cpatsa.pdf
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Marc: |
LEADER 02614naa a2200289 a 4500
001 2006749
005 2016-03-29
008 2015 bl uuuu u00u1 u #d
024 7 $a10.1016/j.cropro.2014.12.012$2DOI
100 1 $aMONTEIRO, V. B.
245 $aMonitoring Tetranychus urticae Koch (Acari$bTetranychidae) resistance to abamectin in vineyards in the Lower Middle Sao Francisco Valley.$h[electronic resource]
260 $c2015
520 $aIn the Lower Middle Sao Francisco Valley, Tetranychus urticae Koch is controlled by the application of acaricides; however, the intensive use of these products in this region has caused control failures in the field. In the present study, concentrationeresponse curves were constructed periodically to monitor the toxicity of abamectin to T. urticae in two vineyards over two years. Diagnostic concentrations of 1 mg and 9 mg of abamectin/L water were established based on the monitoring period to detect T. urticae resistance in different vineyards in the region. Concentration-response curves were obtained for abamectin, bifenthrin and carbosulfan for the populations considered resistant to abamectin. T. urticae were confined in arenas on cotyledonary leaf discs from jack bean (Canavalia ensiformis L.) that had been immersed in acaricide solution. Mite mortality was assessed after 48 h of exposure to the acaricides. The lethal concentration (LC) values varied over time in both of the vineyards studied, which was most likely a result of crop management. An additional 35 vineyards were sampled, and 20 additional populations were established. The results indicated that 45% of the populations exposed to the 9 mg/L abamectin diagnostic concentration experienced less than 80% mortality and were considered resistant to abamectin. The frequency of resistant mites ranged from 4.1% to 80.4%. The resistance ratio ranged from 2406-fold to 8272-fold compared to susceptible populations in the laboratory. Resistance to bifenthrin was also confirmed in the present study, though resistance to carbosulfan was not. No cross-resistance between abamectin and bifenthrin was observed though this requires further investigation.
650 $aBiological control
650 $aGrapes
650 $aÁcaro
650 $aControle Biológico
650 $aEntomologia
650 $aTetranychus Urticae
650 $aUva
653 $aTwo-spotted
653 $aVale do São Francisco
700 1 $aGONDIM JÚNIOR, M. G. C.
700 1 $aOLIVEIRA, J. E. de M.
700 1 $aSIQUEIRA, H. A. A.
700 1 $aSOUSA, J. M.
773 $tCrop Protection$gv. 69, p. 90-96, 2015.
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Embrapa Semiárido (CPATSA) |
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