High resistance levels in brazilian Plutella xylostella populations: needs for adjustments in field concentration
Autor(a) principal: | |
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Data de Publicação: | 2022 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Revista Caatinga |
Texto Completo: | https://periodicos.ufersa.edu.br/caatinga/article/view/10990 |
Resumo: | Plutella xylostella cause severe damage on cruciferous plants all over the world. Farmers in several regions of Brazil report increasing inefficiency of chemical control, even when using high insecticide concentrations. We therefore assume that regional populations of these insects develop multiple resistances. We evaluate here the susceptibility of brazilian diamondback moth populations to the Premio® (Chlorantraniliprole), Dipel® (Bacillus thuringiensis var. Kurstaki) and Lannate® BR (Oxime Methylcarbamate) insecticides, frequently used in Brazil. Susceptibility bioassays with five field-collected and two laboratory diamondback moth populations were conducted with increasing concentrations of insecticides up to ten times above the recommended concentration. Extremely high and region-dependent resistances were found in field populations against Chlorantraniliprole and B. thuringiensis, with Resistance Ratios up to 370.0 times for certain populations. For Oxime Methylcarbamate, we were not able to do Probit analyses for the field populations because of very low mortality rates. Laboratory populations showed resistance to the three tested insecticides with all LC50concentrations exceeding the recommended doses by at least 3 times. Our results show strong and variable resistance to the three tested insecticides according to the region of origin. To maintain efficient pest control in a large country like Brazil, local levels of resistance need therefore to be monitored by the authorities and indications for concentrations of insecticides to be used in the field should be adjusted to each region, to prevent massive spread of insecticides in the field. |
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High resistance levels in brazilian Plutella xylostella populations: needs for adjustments in field concentrationNíveis de alta resistência em populações de Plutella xylostella no Brasil: necessidade de ajuste da dose de campoInseticida. Falha de controle. Monitoramento de resistência.Insecticide. Control failure. Resistance monitoring.Plutella xylostella cause severe damage on cruciferous plants all over the world. Farmers in several regions of Brazil report increasing inefficiency of chemical control, even when using high insecticide concentrations. We therefore assume that regional populations of these insects develop multiple resistances. We evaluate here the susceptibility of brazilian diamondback moth populations to the Premio® (Chlorantraniliprole), Dipel® (Bacillus thuringiensis var. Kurstaki) and Lannate® BR (Oxime Methylcarbamate) insecticides, frequently used in Brazil. Susceptibility bioassays with five field-collected and two laboratory diamondback moth populations were conducted with increasing concentrations of insecticides up to ten times above the recommended concentration. Extremely high and region-dependent resistances were found in field populations against Chlorantraniliprole and B. thuringiensis, with Resistance Ratios up to 370.0 times for certain populations. For Oxime Methylcarbamate, we were not able to do Probit analyses for the field populations because of very low mortality rates. Laboratory populations showed resistance to the three tested insecticides with all LC50concentrations exceeding the recommended doses by at least 3 times. Our results show strong and variable resistance to the three tested insecticides according to the region of origin. To maintain efficient pest control in a large country like Brazil, local levels of resistance need therefore to be monitored by the authorities and indications for concentrations of insecticides to be used in the field should be adjusted to each region, to prevent massive spread of insecticides in the field.Plutella xylostella causa graves danos em plantas crucíferas em todo o mundo. Agricultores em várias regiões do Brasil relatam uma crescente ineficiência no controle químico, mesmo com o uso de altas concentrações de inseticidas. O objetivo deste trabalho foi avaliar a suscetibilidade de populações brasileiras da traça-das-crucíferas aos inseticidas Premio® (Chlorantraniliprole), Dipel® (Bacillus thuringiensis var. kurstaki) e Lannate® BR (Metilcarbamato de oxina), frequentemente usados no Brasil. Os bioensaios de suscetibilidade foram realizados com cinco populações de traça-das-crucíferas coletadas em campo e duas de laboratório e foram conduzidos com concentrações crescentes de inseticidas até dez vezes acima da concentração recomendada. Resistências extremamente altas e dependentes da região foram encontradas em populações de campo para o Chlorantraniliprole e B. thuringiensis, com Razões de Resistência de até 370,0 vezes para a população de Camocin de São Felix . Para Metilcarbamato de oxina, não foi possível realizar a análise Probit para as populações de campo devido baixa mortalidade. Populações de laboratório demonstraram resistência aos três inseticidas testados com concentrações de CL50 excedendo as doses recomendadas em pelo menos 3,0 vezes. Os resultados demonstraram resistência forte e variável aos três inseticidas testados de acordo com a região de origem. Para manter o controle de pragas eficiente em um país grande como o Brasil, os níveis locais de resistência precisam ser monitorados pelas autoridades e reavaliações e ajustes de doses regionais dos inseticidas deveriam ser implementadas como política pública para evitar a disseminação massiva de inseticidas em campo, assim como, aumentos dos casos de resistência.Universidade Federal Rural do Semi-Árido2022-12-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://periodicos.ufersa.edu.br/caatinga/article/view/1099010.1590/1983-21252023v36n106rcREVISTA CAATINGA; Vol. 36 No. 1 (2023); 53-60Revista Caatinga; v. 36 n. 1 (2023); 53-601983-21250100-316Xreponame:Revista Caatingainstname:Universidade Federal Rural do Semi-Árido (UFERSA)instacron:UFERSAenghttps://periodicos.ufersa.edu.br/caatinga/article/view/10990/11070Copyright (c) 2022 Revista Caatingainfo:eu-repo/semantics/openAccessSilva Filho, José Gomes daFarias, Thiago Izaquiel deMelo, Iuri Andrade deSantoro, Kleber Régis Anton, SylviaBadji, César Auguste2023-07-27T12:18:04Zoai:ojs.periodicos.ufersa.edu.br:article/10990Revistahttps://periodicos.ufersa.edu.br/index.php/caatinga/indexPUBhttps://periodicos.ufersa.edu.br/index.php/caatinga/oaipatricio@ufersa.edu.br|| caatinga@ufersa.edu.br1983-21250100-316Xopendoar:2024-04-29T09:47:00.835618Revista Caatinga - Universidade Federal Rural do Semi-Árido (UFERSA)true |
dc.title.none.fl_str_mv |
High resistance levels in brazilian Plutella xylostella populations: needs for adjustments in field concentration Níveis de alta resistência em populações de Plutella xylostella no Brasil: necessidade de ajuste da dose de campo |
title |
High resistance levels in brazilian Plutella xylostella populations: needs for adjustments in field concentration |
spellingShingle |
High resistance levels in brazilian Plutella xylostella populations: needs for adjustments in field concentration Silva Filho, José Gomes da Inseticida. Falha de controle. Monitoramento de resistência. Insecticide. Control failure. Resistance monitoring. |
title_short |
High resistance levels in brazilian Plutella xylostella populations: needs for adjustments in field concentration |
title_full |
High resistance levels in brazilian Plutella xylostella populations: needs for adjustments in field concentration |
title_fullStr |
High resistance levels in brazilian Plutella xylostella populations: needs for adjustments in field concentration |
title_full_unstemmed |
High resistance levels in brazilian Plutella xylostella populations: needs for adjustments in field concentration |
title_sort |
High resistance levels in brazilian Plutella xylostella populations: needs for adjustments in field concentration |
author |
Silva Filho, José Gomes da |
author_facet |
Silva Filho, José Gomes da Farias, Thiago Izaquiel de Melo, Iuri Andrade de Santoro, Kleber Régis Anton, Sylvia Badji, César Auguste |
author_role |
author |
author2 |
Farias, Thiago Izaquiel de Melo, Iuri Andrade de Santoro, Kleber Régis Anton, Sylvia Badji, César Auguste |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Silva Filho, José Gomes da Farias, Thiago Izaquiel de Melo, Iuri Andrade de Santoro, Kleber Régis Anton, Sylvia Badji, César Auguste |
dc.subject.por.fl_str_mv |
Inseticida. Falha de controle. Monitoramento de resistência. Insecticide. Control failure. Resistance monitoring. |
topic |
Inseticida. Falha de controle. Monitoramento de resistência. Insecticide. Control failure. Resistance monitoring. |
description |
Plutella xylostella cause severe damage on cruciferous plants all over the world. Farmers in several regions of Brazil report increasing inefficiency of chemical control, even when using high insecticide concentrations. We therefore assume that regional populations of these insects develop multiple resistances. We evaluate here the susceptibility of brazilian diamondback moth populations to the Premio® (Chlorantraniliprole), Dipel® (Bacillus thuringiensis var. Kurstaki) and Lannate® BR (Oxime Methylcarbamate) insecticides, frequently used in Brazil. Susceptibility bioassays with five field-collected and two laboratory diamondback moth populations were conducted with increasing concentrations of insecticides up to ten times above the recommended concentration. Extremely high and region-dependent resistances were found in field populations against Chlorantraniliprole and B. thuringiensis, with Resistance Ratios up to 370.0 times for certain populations. For Oxime Methylcarbamate, we were not able to do Probit analyses for the field populations because of very low mortality rates. Laboratory populations showed resistance to the three tested insecticides with all LC50concentrations exceeding the recommended doses by at least 3 times. Our results show strong and variable resistance to the three tested insecticides according to the region of origin. To maintain efficient pest control in a large country like Brazil, local levels of resistance need therefore to be monitored by the authorities and indications for concentrations of insecticides to be used in the field should be adjusted to each region, to prevent massive spread of insecticides in the field. |
publishDate |
2022 |
dc.date.none.fl_str_mv |
2022-12-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://periodicos.ufersa.edu.br/caatinga/article/view/10990 10.1590/1983-21252023v36n106rc |
url |
https://periodicos.ufersa.edu.br/caatinga/article/view/10990 |
identifier_str_mv |
10.1590/1983-21252023v36n106rc |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
https://periodicos.ufersa.edu.br/caatinga/article/view/10990/11070 |
dc.rights.driver.fl_str_mv |
Copyright (c) 2022 Revista Caatinga info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Copyright (c) 2022 Revista Caatinga |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Universidade Federal Rural do Semi-Árido |
publisher.none.fl_str_mv |
Universidade Federal Rural do Semi-Árido |
dc.source.none.fl_str_mv |
REVISTA CAATINGA; Vol. 36 No. 1 (2023); 53-60 Revista Caatinga; v. 36 n. 1 (2023); 53-60 1983-2125 0100-316X reponame:Revista Caatinga instname:Universidade Federal Rural do Semi-Árido (UFERSA) instacron:UFERSA |
instname_str |
Universidade Federal Rural do Semi-Árido (UFERSA) |
instacron_str |
UFERSA |
institution |
UFERSA |
reponame_str |
Revista Caatinga |
collection |
Revista Caatinga |
repository.name.fl_str_mv |
Revista Caatinga - Universidade Federal Rural do Semi-Árido (UFERSA) |
repository.mail.fl_str_mv |
patricio@ufersa.edu.br|| caatinga@ufersa.edu.br |
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1797674029937590272 |