Imidacloprid-mediated effects on survival and fertility of the Neotropical brown stink bug Euschistus heros

Detalhes bibliográficos
Autor(a) principal: Santos, M. F.
Data de Publicação: 2015
Outros Autores: Santos, R. L., Tomé, H. V. V., Barbosa, W. F., Martins, G. F., Guedes, R. N. C., Oliveira, E. E.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: LOCUS Repositório Institucional da UFV
Texto Completo: http://dx.doi.org/10.1007/s10340-015-0666-y
http://www.locus.ufv.br/handle/123456789/21638
Resumo: Enhanced reproductive output after sublethal insecticide exposure, including neonicotinoid exposure, has been reported in a diversity of arthropods. Suspicions of such a phenomenon in the Neotropical brown stink bug, Euschistus heros (Hemiptera: Pentatomidae), were sparked by the increasing densities of naturally occurring populations of this insect pest species in Brazilian soybean fields. Here, we tested whether the sublethal exposure to imidacloprid would induce changes in the survival and reproductive performances of E. heros adult females. The imidacloprid estimated LC50 was 0.83 (0.60–1.25) μg a.i./cm2, and the dose recommended for field applications (4.2 μg a.i./cm2) was within the concentration range of the imidacloprid estimated LC80 [2.66 (1.65–5.49) μg a.i./cm2]. Newly emerged (≤24 h) adult females were exposed for 48 h to dry imidacloprid residues (0.042 μg/cm2, equivalent to 1 % of the field rate dose) and exhibited higher levels of cell damage, greater ovariole length, and a larger area of the most developed follicle in their ovaries up to the 6th day of adulthood. Furthermore, these females exhibited reduced rates of survival but higher fecundity and fertility rates compared with untreated females. Our results thus suggest that females of E. heros increased their reproductive output in response to the imidacloprid sublethal exposure. These findings suggest a potential involvement of sublethal exposure to neonicotinoids in the recent outbreaks of the Neotropical brown stink bug E. heros observed in Brazilian soybean-producing regions.
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spelling Santos, M. F.Santos, R. L.Tomé, H. V. V.Barbosa, W. F.Martins, G. F.Guedes, R. N. C.Oliveira, E. E.2018-09-04T17:45:45Z2018-09-04T17:45:45Z2015-04-231612-4766http://dx.doi.org/10.1007/s10340-015-0666-yhttp://www.locus.ufv.br/handle/123456789/21638Enhanced reproductive output after sublethal insecticide exposure, including neonicotinoid exposure, has been reported in a diversity of arthropods. Suspicions of such a phenomenon in the Neotropical brown stink bug, Euschistus heros (Hemiptera: Pentatomidae), were sparked by the increasing densities of naturally occurring populations of this insect pest species in Brazilian soybean fields. Here, we tested whether the sublethal exposure to imidacloprid would induce changes in the survival and reproductive performances of E. heros adult females. The imidacloprid estimated LC50 was 0.83 (0.60–1.25) μg a.i./cm2, and the dose recommended for field applications (4.2 μg a.i./cm2) was within the concentration range of the imidacloprid estimated LC80 [2.66 (1.65–5.49) μg a.i./cm2]. Newly emerged (≤24 h) adult females were exposed for 48 h to dry imidacloprid residues (0.042 μg/cm2, equivalent to 1 % of the field rate dose) and exhibited higher levels of cell damage, greater ovariole length, and a larger area of the most developed follicle in their ovaries up to the 6th day of adulthood. Furthermore, these females exhibited reduced rates of survival but higher fecundity and fertility rates compared with untreated females. Our results thus suggest that females of E. heros increased their reproductive output in response to the imidacloprid sublethal exposure. These findings suggest a potential involvement of sublethal exposure to neonicotinoids in the recent outbreaks of the Neotropical brown stink bug E. heros observed in Brazilian soybean-producing regions.engJournal of Pest ScienceVolume 89, Issue 1, p. 231–240, March 2016Springer Berlin Heidelberginfo:eu-repo/semantics/openAccessReproductive responsesHormesisInsect ovariesDamaged cellsStink bugsImidacloprid-mediated effects on survival and fertility of the Neotropical brown stink bug Euschistus herosinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfreponame:LOCUS Repositório Institucional da UFVinstname:Universidade Federal de Viçosa (UFV)instacron:UFVORIGINALartigo.pdfartigo.pdfTexto completoapplication/pdf1228208https://locus.ufv.br//bitstream/123456789/21638/1/artigo.pdf35477512b42fe5a91b33c837a2089d7aMD51LICENSElicense.txtlicense.txttext/plain; charset=utf-81748https://locus.ufv.br//bitstream/123456789/21638/2/license.txt8a4605be74aa9ea9d79846c1fba20a33MD52THUMBNAILartigo.pdf.jpgartigo.pdf.jpgIM Thumbnailimage/jpeg5122https://locus.ufv.br//bitstream/123456789/21638/3/artigo.pdf.jpg695c499e48bd88eb58adc92d7ceacdb4MD53123456789/216382018-09-04 23:00:58.692oai:locus.ufv.br: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Repositório InstitucionalPUBhttps://www.locus.ufv.br/oai/requestfabiojreis@ufv.bropendoar:21452018-09-05T02:00:58LOCUS Repositório Institucional da UFV - Universidade Federal de Viçosa (UFV)false
dc.title.en.fl_str_mv Imidacloprid-mediated effects on survival and fertility of the Neotropical brown stink bug Euschistus heros
title Imidacloprid-mediated effects on survival and fertility of the Neotropical brown stink bug Euschistus heros
spellingShingle Imidacloprid-mediated effects on survival and fertility of the Neotropical brown stink bug Euschistus heros
Santos, M. F.
Reproductive responses
Hormesis
Insect ovaries
Damaged cells
Stink bugs
title_short Imidacloprid-mediated effects on survival and fertility of the Neotropical brown stink bug Euschistus heros
title_full Imidacloprid-mediated effects on survival and fertility of the Neotropical brown stink bug Euschistus heros
title_fullStr Imidacloprid-mediated effects on survival and fertility of the Neotropical brown stink bug Euschistus heros
title_full_unstemmed Imidacloprid-mediated effects on survival and fertility of the Neotropical brown stink bug Euschistus heros
title_sort Imidacloprid-mediated effects on survival and fertility of the Neotropical brown stink bug Euschistus heros
author Santos, M. F.
author_facet Santos, M. F.
Santos, R. L.
Tomé, H. V. V.
Barbosa, W. F.
Martins, G. F.
Guedes, R. N. C.
Oliveira, E. E.
author_role author
author2 Santos, R. L.
Tomé, H. V. V.
Barbosa, W. F.
Martins, G. F.
Guedes, R. N. C.
Oliveira, E. E.
author2_role author
author
author
author
author
author
dc.contributor.author.fl_str_mv Santos, M. F.
Santos, R. L.
Tomé, H. V. V.
Barbosa, W. F.
Martins, G. F.
Guedes, R. N. C.
Oliveira, E. E.
dc.subject.pt-BR.fl_str_mv Reproductive responses
Hormesis
Insect ovaries
Damaged cells
Stink bugs
topic Reproductive responses
Hormesis
Insect ovaries
Damaged cells
Stink bugs
description Enhanced reproductive output after sublethal insecticide exposure, including neonicotinoid exposure, has been reported in a diversity of arthropods. Suspicions of such a phenomenon in the Neotropical brown stink bug, Euschistus heros (Hemiptera: Pentatomidae), were sparked by the increasing densities of naturally occurring populations of this insect pest species in Brazilian soybean fields. Here, we tested whether the sublethal exposure to imidacloprid would induce changes in the survival and reproductive performances of E. heros adult females. The imidacloprid estimated LC50 was 0.83 (0.60–1.25) μg a.i./cm2, and the dose recommended for field applications (4.2 μg a.i./cm2) was within the concentration range of the imidacloprid estimated LC80 [2.66 (1.65–5.49) μg a.i./cm2]. Newly emerged (≤24 h) adult females were exposed for 48 h to dry imidacloprid residues (0.042 μg/cm2, equivalent to 1 % of the field rate dose) and exhibited higher levels of cell damage, greater ovariole length, and a larger area of the most developed follicle in their ovaries up to the 6th day of adulthood. Furthermore, these females exhibited reduced rates of survival but higher fecundity and fertility rates compared with untreated females. Our results thus suggest that females of E. heros increased their reproductive output in response to the imidacloprid sublethal exposure. These findings suggest a potential involvement of sublethal exposure to neonicotinoids in the recent outbreaks of the Neotropical brown stink bug E. heros observed in Brazilian soybean-producing regions.
publishDate 2015
dc.date.issued.fl_str_mv 2015-04-23
dc.date.accessioned.fl_str_mv 2018-09-04T17:45:45Z
dc.date.available.fl_str_mv 2018-09-04T17:45:45Z
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dc.identifier.uri.fl_str_mv http://dx.doi.org/10.1007/s10340-015-0666-y
http://www.locus.ufv.br/handle/123456789/21638
dc.identifier.issn.none.fl_str_mv 1612-4766
identifier_str_mv 1612-4766
url http://dx.doi.org/10.1007/s10340-015-0666-y
http://www.locus.ufv.br/handle/123456789/21638
dc.language.iso.fl_str_mv eng
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dc.relation.ispartofseries.pt-BR.fl_str_mv Volume 89, Issue 1, p. 231–240, March 2016
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