Selectivity of insecticides with two active ingredients on the parasitoid Trichogramma pretiosum (Hymenoptera: Trichogrammatidae)

Detalhes bibliográficos
Autor(a) principal: Paiva, Ana Clara Ribeiro de
Data de Publicação: 2020
Tipo de documento: Tese
Idioma: eng
Título da fonte: Biblioteca Digital de Teses e Dissertações da USP
Texto Completo: https://www.teses.usp.br/teses/disponiveis/11/11146/tde-16072020-124633/
Resumo: The integrated use of chemical and biological control is possible based on the Selectivity tests, as proposed by the IOBC/WPRS. However, it is also important to evaluate further than the lethal effect, as proposed by this organization, assessing other parameters that can alter the efficacy of a natural enemy in the field. Based on this necessity and the importance of the parasitoid wasp Trichogramma pretiosum on biological control programs worldwide, the objective of this study was to evaluate the effects of ready-mix insecticides on different life stages of the parasitoid, following the IOBC/WPRS recommendations, and also considering the sublethal effects. Therefore, the following tests were performed on two generations of the parasitoid: (i) effects of insecticides on pupae immersed in insecticide solution (ii) effects of insecticides on pupa sprayed with insecticide solution (iii) effect of insecticides on adults in contact with dried-residues on Ephestia kuehniella eggs (iv) effects of insecticdes on adults in contact with dried-residues on soybean leaves (v) effects of insecticide on flight capacity when pupae and adults were exposed to the dried-residue (vi) duration of insecticides harmful activity. All the insecticides tested affected somehow at least one of the parameters evaluated in all the tests, showing how important it is to carefully use ready-mix insecticides on IPM programs. Regarding the duration of the harmful activity, six out of the seven insecticides tested were classified as short-lived, and only cyproconazole + thiamethoxam was classified as slightly persistent.
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spelling Selectivity of insecticides with two active ingredients on the parasitoid Trichogramma pretiosum (Hymenoptera: Trichogrammatidae)Seletividade de inseticidas formulados com dois ingredientes ativos sobre o parasitoide Trichogramma pretiosum (Hymenoptera: Trichogrammatidae)Biological controlControle biológicoIntegrated pest managementManejo integrado de pragasPesticidaPesticideToxicidadeToxicityThe integrated use of chemical and biological control is possible based on the Selectivity tests, as proposed by the IOBC/WPRS. However, it is also important to evaluate further than the lethal effect, as proposed by this organization, assessing other parameters that can alter the efficacy of a natural enemy in the field. Based on this necessity and the importance of the parasitoid wasp Trichogramma pretiosum on biological control programs worldwide, the objective of this study was to evaluate the effects of ready-mix insecticides on different life stages of the parasitoid, following the IOBC/WPRS recommendations, and also considering the sublethal effects. Therefore, the following tests were performed on two generations of the parasitoid: (i) effects of insecticides on pupae immersed in insecticide solution (ii) effects of insecticides on pupa sprayed with insecticide solution (iii) effect of insecticides on adults in contact with dried-residues on Ephestia kuehniella eggs (iv) effects of insecticdes on adults in contact with dried-residues on soybean leaves (v) effects of insecticide on flight capacity when pupae and adults were exposed to the dried-residue (vi) duration of insecticides harmful activity. All the insecticides tested affected somehow at least one of the parameters evaluated in all the tests, showing how important it is to carefully use ready-mix insecticides on IPM programs. Regarding the duration of the harmful activity, six out of the seven insecticides tested were classified as short-lived, and only cyproconazole + thiamethoxam was classified as slightly persistent.Os resultados obtidos em testes de seletividade, propostos pela IOBC/WPRS, permitem o uso integrado do controle químico com o biológico. No entanto, é importante avaliar, além do efeito letal, outros parâmetros que possam comprometer a eficiência do inimigo natural. Baseado nessa necessidade e, na importância do parasitoide Trichogramma pretiosum Riley em programas de controle biológico no mundo todo, objetivou-se com esse estudo avaliar o efeito de inseticidas formulados com dois ingredientes ativos em diferentes estágios de vida desse parasitoide, seguindo as recomendações da IOBC/WPRS, considerando, também, os efeitos subletais. Para isso, os testes a seguir foram conduzidos em duas gerações do parasitoide: (i) efeito de inseticidas sobre pupas imersas em calda inseticida, (ii) efeito de inseticidas pulverizados sobre pupa (iii) efeito de inseticidas em adultos em contato com o resíduo em ovos de Ephestia kuehniella, (iv) efeito de inseticidas em adultos em contato com o resíduo em folhas de soja, (v) efeito dos inseticidas na capacidade de voo quando pupas e adultos foram expostas ao resíduo do inseticida, e (vi) duração da atividade nociva dos inseticidas. Os 7 inseticidas testados afetaram, de alguma maneira, pelo menos um dos parâmetros avaliados em todos os testes, mostrando a importância da cautela no uso de inseticidas com dois ingredientes ativos em programas de MIP. Quando a duração da atividade nociva desses inseticidas foi avaliada, 6 dos 7 inseticidas testados foram classificados como vida-curta, e somente a mistura ciproconazol + tiametoxam foi classificado como moderadamente persistente.Biblioteca Digitais de Teses e Dissertações da USPYamamoto, Pedro TakaoPaiva, Ana Clara Ribeiro de2020-04-28info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/doctoralThesisapplication/pdfhttps://www.teses.usp.br/teses/disponiveis/11/11146/tde-16072020-124633/reponame:Biblioteca Digital de Teses e Dissertações da USPinstname:Universidade de São Paulo (USP)instacron:USPLiberar o conteúdo para acesso público.info:eu-repo/semantics/openAccesseng2020-07-20T15:40:02Zoai:teses.usp.br:tde-16072020-124633Biblioteca Digital de Teses e Dissertaçõeshttp://www.teses.usp.br/PUBhttp://www.teses.usp.br/cgi-bin/mtd2br.plvirginia@if.usp.br|| atendimento@aguia.usp.br||virginia@if.usp.bropendoar:27212020-07-20T15:40:02Biblioteca Digital de Teses e Dissertações da USP - Universidade de São Paulo (USP)false
dc.title.none.fl_str_mv Selectivity of insecticides with two active ingredients on the parasitoid Trichogramma pretiosum (Hymenoptera: Trichogrammatidae)
Seletividade de inseticidas formulados com dois ingredientes ativos sobre o parasitoide Trichogramma pretiosum (Hymenoptera: Trichogrammatidae)
title Selectivity of insecticides with two active ingredients on the parasitoid Trichogramma pretiosum (Hymenoptera: Trichogrammatidae)
spellingShingle Selectivity of insecticides with two active ingredients on the parasitoid Trichogramma pretiosum (Hymenoptera: Trichogrammatidae)
Paiva, Ana Clara Ribeiro de
Biological control
Controle biológico
Integrated pest management
Manejo integrado de pragas
Pesticida
Pesticide
Toxicidade
Toxicity
title_short Selectivity of insecticides with two active ingredients on the parasitoid Trichogramma pretiosum (Hymenoptera: Trichogrammatidae)
title_full Selectivity of insecticides with two active ingredients on the parasitoid Trichogramma pretiosum (Hymenoptera: Trichogrammatidae)
title_fullStr Selectivity of insecticides with two active ingredients on the parasitoid Trichogramma pretiosum (Hymenoptera: Trichogrammatidae)
title_full_unstemmed Selectivity of insecticides with two active ingredients on the parasitoid Trichogramma pretiosum (Hymenoptera: Trichogrammatidae)
title_sort Selectivity of insecticides with two active ingredients on the parasitoid Trichogramma pretiosum (Hymenoptera: Trichogrammatidae)
author Paiva, Ana Clara Ribeiro de
author_facet Paiva, Ana Clara Ribeiro de
author_role author
dc.contributor.none.fl_str_mv Yamamoto, Pedro Takao
dc.contributor.author.fl_str_mv Paiva, Ana Clara Ribeiro de
dc.subject.por.fl_str_mv Biological control
Controle biológico
Integrated pest management
Manejo integrado de pragas
Pesticida
Pesticide
Toxicidade
Toxicity
topic Biological control
Controle biológico
Integrated pest management
Manejo integrado de pragas
Pesticida
Pesticide
Toxicidade
Toxicity
description The integrated use of chemical and biological control is possible based on the Selectivity tests, as proposed by the IOBC/WPRS. However, it is also important to evaluate further than the lethal effect, as proposed by this organization, assessing other parameters that can alter the efficacy of a natural enemy in the field. Based on this necessity and the importance of the parasitoid wasp Trichogramma pretiosum on biological control programs worldwide, the objective of this study was to evaluate the effects of ready-mix insecticides on different life stages of the parasitoid, following the IOBC/WPRS recommendations, and also considering the sublethal effects. Therefore, the following tests were performed on two generations of the parasitoid: (i) effects of insecticides on pupae immersed in insecticide solution (ii) effects of insecticides on pupa sprayed with insecticide solution (iii) effect of insecticides on adults in contact with dried-residues on Ephestia kuehniella eggs (iv) effects of insecticdes on adults in contact with dried-residues on soybean leaves (v) effects of insecticide on flight capacity when pupae and adults were exposed to the dried-residue (vi) duration of insecticides harmful activity. All the insecticides tested affected somehow at least one of the parameters evaluated in all the tests, showing how important it is to carefully use ready-mix insecticides on IPM programs. Regarding the duration of the harmful activity, six out of the seven insecticides tested were classified as short-lived, and only cyproconazole + thiamethoxam was classified as slightly persistent.
publishDate 2020
dc.date.none.fl_str_mv 2020-04-28
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/doctoralThesis
format doctoralThesis
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://www.teses.usp.br/teses/disponiveis/11/11146/tde-16072020-124633/
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dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv
dc.rights.driver.fl_str_mv Liberar o conteúdo para acesso público.
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Liberar o conteúdo para acesso público.
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
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dc.publisher.none.fl_str_mv Biblioteca Digitais de Teses e Dissertações da USP
publisher.none.fl_str_mv Biblioteca Digitais de Teses e Dissertações da USP
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reponame:Biblioteca Digital de Teses e Dissertações da USP
instname:Universidade de São Paulo (USP)
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institution USP
reponame_str Biblioteca Digital de Teses e Dissertações da USP
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repository.name.fl_str_mv Biblioteca Digital de Teses e Dissertações da USP - Universidade de São Paulo (USP)
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