Toxicity of some insecticides used in maize crop on trichogramma pretiosum (hymenoptera, trichogrammatidae) immature stages
Autor(a) principal: | |
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Data de Publicação: | 2014 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFLA |
Texto Completo: | http://repositorio.ufla.br/jspui/handle/1/37233 |
Resumo: | Fall armyworm Spodoptera frugiperda (J.E. Smith, 1797) (Lepidoptera: Noctuidae) is an important pest of maize (Zea mays L.) crops in Brazil. The effects of beta-cypermethrin, chlorfenapyr, chlorpyrifos, spinosad, etofenprox, triflumuron, alpha-cypermethrin/teflubenzuron, and lambda-cyhalothrin/thiamethoxam on Trichogramma pretiosum Riley, 1879 (Hymenoptera: Trichogrammatidae) immature stages were evaluated. Eggs of Anagasta kuehniella (Zeller, 1879) (Lepidoptera: Pyralidae), containing immature stages of the parasitoid were dipped in water solution pesticides, to evaluate their effects on emergence and sex ratio of F1 parasitoids. For F2 parasitoids, emergence, parasitism capacity, and sex ratio were evaluated. Beta-cypermethrin, chlorfenapyr, chlorpyrifos, and spinosad affected the emergence success of F1 T. pretiosum. Insects exposed to etofenprox and alpha-cypermethrin/teflubenzuron during the egg-larval period and to lambda-cyhalothrin/thiamethoxam during the pupal stage also suffered reduction in the emergence. Beta-cypermethrin affected the sex ratio of F1 T. pretiosum from host eggs treated during the egg-larval period; spinosad affected it during the egg-larval period and the pupal stage, whereas chlorpyrifos did the same when applied during the pupal stage. Chlorpyrifos also affected the sex ratio of F2 parasitoids, but only when applied during the egg-larval period, whereas chlorfenapyr reduced this trait when applied during the pre-pupal phase. Chlorpyrifos and alpha-cypermethrin/teflubenzuron affected the parasitism capacity of F1 females from eggs treated during the egg-larval period. Considering the overall effects, only etofenprox and triflumuron were selective on T. pretiosum when applied on parasitized A. kuehniella eggs. Further studies need to be carried out to verify the toxicity of the other pesticides under semi-field and field conditions. |
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Toxicity of some insecticides used in maize crop on trichogramma pretiosum (hymenoptera, trichogrammatidae) immature stagesAnagasta kuehniellaBiological controlNatural enemiesSelectivityZea maysFall armyworm Spodoptera frugiperda (J.E. Smith, 1797) (Lepidoptera: Noctuidae) is an important pest of maize (Zea mays L.) crops in Brazil. The effects of beta-cypermethrin, chlorfenapyr, chlorpyrifos, spinosad, etofenprox, triflumuron, alpha-cypermethrin/teflubenzuron, and lambda-cyhalothrin/thiamethoxam on Trichogramma pretiosum Riley, 1879 (Hymenoptera: Trichogrammatidae) immature stages were evaluated. Eggs of Anagasta kuehniella (Zeller, 1879) (Lepidoptera: Pyralidae), containing immature stages of the parasitoid were dipped in water solution pesticides, to evaluate their effects on emergence and sex ratio of F1 parasitoids. For F2 parasitoids, emergence, parasitism capacity, and sex ratio were evaluated. Beta-cypermethrin, chlorfenapyr, chlorpyrifos, and spinosad affected the emergence success of F1 T. pretiosum. Insects exposed to etofenprox and alpha-cypermethrin/teflubenzuron during the egg-larval period and to lambda-cyhalothrin/thiamethoxam during the pupal stage also suffered reduction in the emergence. Beta-cypermethrin affected the sex ratio of F1 T. pretiosum from host eggs treated during the egg-larval period; spinosad affected it during the egg-larval period and the pupal stage, whereas chlorpyrifos did the same when applied during the pupal stage. Chlorpyrifos also affected the sex ratio of F2 parasitoids, but only when applied during the egg-larval period, whereas chlorfenapyr reduced this trait when applied during the pre-pupal phase. Chlorpyrifos and alpha-cypermethrin/teflubenzuron affected the parasitism capacity of F1 females from eggs treated during the egg-larval period. Considering the overall effects, only etofenprox and triflumuron were selective on T. pretiosum when applied on parasitized A. kuehniella eggs. Further studies need to be carried out to verify the toxicity of the other pesticides under semi-field and field conditions.Instituto de Investigaciones Agropecuarias2019-10-15T13:36:48Z2019-10-15T13:36:48Z2014info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfSOUZA, J. R. et al. Toxicity of some insecticides used in maize crop on trichogramma pretiosum (hymenoptera, trichogrammatidae) immature stages. Chilean Journal of Agricultural Research, Chillán, v. 74, n. 2, Apr./June 2014.http://repositorio.ufla.br/jspui/handle/1/37233Chilean Journal of Agricultural Researchreponame:Repositório Institucional da UFLAinstname:Universidade Federal de Lavras (UFLA)instacron:UFLAAttribution-NonCommercial 4.0 Internationalhttp://creativecommons.org/licenses/by-nc/4.0/info:eu-repo/semantics/openAccessSouza, Jander R.Carvalho, Geraldo A.Moura, Alexandre P.Couto, Marcelo H. G.Maia, Jader B.eng2019-10-15T13:37:50Zoai:localhost:1/37233Repositório InstitucionalPUBhttp://repositorio.ufla.br/oai/requestnivaldo@ufla.br || repositorio.biblioteca@ufla.bropendoar:2019-10-15T13:37:50Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA)false |
dc.title.none.fl_str_mv |
Toxicity of some insecticides used in maize crop on trichogramma pretiosum (hymenoptera, trichogrammatidae) immature stages |
title |
Toxicity of some insecticides used in maize crop on trichogramma pretiosum (hymenoptera, trichogrammatidae) immature stages |
spellingShingle |
Toxicity of some insecticides used in maize crop on trichogramma pretiosum (hymenoptera, trichogrammatidae) immature stages Souza, Jander R. Anagasta kuehniella Biological control Natural enemies Selectivity Zea mays |
title_short |
Toxicity of some insecticides used in maize crop on trichogramma pretiosum (hymenoptera, trichogrammatidae) immature stages |
title_full |
Toxicity of some insecticides used in maize crop on trichogramma pretiosum (hymenoptera, trichogrammatidae) immature stages |
title_fullStr |
Toxicity of some insecticides used in maize crop on trichogramma pretiosum (hymenoptera, trichogrammatidae) immature stages |
title_full_unstemmed |
Toxicity of some insecticides used in maize crop on trichogramma pretiosum (hymenoptera, trichogrammatidae) immature stages |
title_sort |
Toxicity of some insecticides used in maize crop on trichogramma pretiosum (hymenoptera, trichogrammatidae) immature stages |
author |
Souza, Jander R. |
author_facet |
Souza, Jander R. Carvalho, Geraldo A. Moura, Alexandre P. Couto, Marcelo H. G. Maia, Jader B. |
author_role |
author |
author2 |
Carvalho, Geraldo A. Moura, Alexandre P. Couto, Marcelo H. G. Maia, Jader B. |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Souza, Jander R. Carvalho, Geraldo A. Moura, Alexandre P. Couto, Marcelo H. G. Maia, Jader B. |
dc.subject.por.fl_str_mv |
Anagasta kuehniella Biological control Natural enemies Selectivity Zea mays |
topic |
Anagasta kuehniella Biological control Natural enemies Selectivity Zea mays |
description |
Fall armyworm Spodoptera frugiperda (J.E. Smith, 1797) (Lepidoptera: Noctuidae) is an important pest of maize (Zea mays L.) crops in Brazil. The effects of beta-cypermethrin, chlorfenapyr, chlorpyrifos, spinosad, etofenprox, triflumuron, alpha-cypermethrin/teflubenzuron, and lambda-cyhalothrin/thiamethoxam on Trichogramma pretiosum Riley, 1879 (Hymenoptera: Trichogrammatidae) immature stages were evaluated. Eggs of Anagasta kuehniella (Zeller, 1879) (Lepidoptera: Pyralidae), containing immature stages of the parasitoid were dipped in water solution pesticides, to evaluate their effects on emergence and sex ratio of F1 parasitoids. For F2 parasitoids, emergence, parasitism capacity, and sex ratio were evaluated. Beta-cypermethrin, chlorfenapyr, chlorpyrifos, and spinosad affected the emergence success of F1 T. pretiosum. Insects exposed to etofenprox and alpha-cypermethrin/teflubenzuron during the egg-larval period and to lambda-cyhalothrin/thiamethoxam during the pupal stage also suffered reduction in the emergence. Beta-cypermethrin affected the sex ratio of F1 T. pretiosum from host eggs treated during the egg-larval period; spinosad affected it during the egg-larval period and the pupal stage, whereas chlorpyrifos did the same when applied during the pupal stage. Chlorpyrifos also affected the sex ratio of F2 parasitoids, but only when applied during the egg-larval period, whereas chlorfenapyr reduced this trait when applied during the pre-pupal phase. Chlorpyrifos and alpha-cypermethrin/teflubenzuron affected the parasitism capacity of F1 females from eggs treated during the egg-larval period. Considering the overall effects, only etofenprox and triflumuron were selective on T. pretiosum when applied on parasitized A. kuehniella eggs. Further studies need to be carried out to verify the toxicity of the other pesticides under semi-field and field conditions. |
publishDate |
2014 |
dc.date.none.fl_str_mv |
2014 2019-10-15T13:36:48Z 2019-10-15T13:36:48Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
SOUZA, J. R. et al. Toxicity of some insecticides used in maize crop on trichogramma pretiosum (hymenoptera, trichogrammatidae) immature stages. Chilean Journal of Agricultural Research, Chillán, v. 74, n. 2, Apr./June 2014. http://repositorio.ufla.br/jspui/handle/1/37233 |
identifier_str_mv |
SOUZA, J. R. et al. Toxicity of some insecticides used in maize crop on trichogramma pretiosum (hymenoptera, trichogrammatidae) immature stages. Chilean Journal of Agricultural Research, Chillán, v. 74, n. 2, Apr./June 2014. |
url |
http://repositorio.ufla.br/jspui/handle/1/37233 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.rights.driver.fl_str_mv |
Attribution-NonCommercial 4.0 International http://creativecommons.org/licenses/by-nc/4.0/ info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Attribution-NonCommercial 4.0 International http://creativecommons.org/licenses/by-nc/4.0/ |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Instituto de Investigaciones Agropecuarias |
publisher.none.fl_str_mv |
Instituto de Investigaciones Agropecuarias |
dc.source.none.fl_str_mv |
Chilean Journal of Agricultural Research reponame:Repositório Institucional da UFLA instname:Universidade Federal de Lavras (UFLA) instacron:UFLA |
instname_str |
Universidade Federal de Lavras (UFLA) |
instacron_str |
UFLA |
institution |
UFLA |
reponame_str |
Repositório Institucional da UFLA |
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Repositório Institucional da UFLA |
repository.name.fl_str_mv |
Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA) |
repository.mail.fl_str_mv |
nivaldo@ufla.br || repositorio.biblioteca@ufla.br |
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1784549974688661504 |