Impact of Bt cotton on the population dynamics of the cotton aphid in greenhouse

Impact of Bt cotton on the population dynamics of the cotton aphid in greenhouse

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The objective of this work was to develop an experimental protocol to assess the impact of Bt cotton on bionomics and on plant choice for Aphis gossypii colonization. The bionomics of the cottonaphid was assessed in greenhouse with insects reared in individual cages containing Bt cotton plants of the variety DP 404 BG (Bollgard) or its nontransformed isoline DP 4049. Cages with Bt cotton and non-Bt cottonwere used as choosing arena for evaluation of winged adults preference. There was no signifi cant difference for pre-reproduction period (immature phase), reproduction period, longevity, survivorship curve total and daily production of offspring by female, and curve of accumulated production of offspring by the population.There was no preference of colonization for any plant by winged adults, which indicates equivalent rates of colonization of the initial populations. Bt cotton plants do not affect the population dynamics of A. gossypii,and do not increase its potential risk as pest.

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Main Authors: Sujii, Edison Ryoiti, Togni, Pedro Henrique Brun, Nakasu, Erich Yukio Tempel, Pires, Carmen Silvia Soares, Paula, Débora Pires de, Fontes, Eliana Maria Gouveia
Format: Digital revista
Language:por
Published: Pesquisa Agropecuaria Brasileira 2008
Online Access:https://seer.sct.embrapa.br/index.php/pab/article/view/792
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spelling rev-pab-br-article-7922014-07-17T16:57:06Z Impact of Bt cotton on the population dynamics of the cotton aphid in greenhouse Impacto do algodoeiro Bt na dinâmica populacional do pulgão-do-algodoeiro em casa de vegetação Sujii, Edison Ryoiti Togni, Pedro Henrique Brun Nakasu, Erich Yukio Tempel Pires, Carmen Silvia Soares Paula, Débora Pires de Fontes, Eliana Maria Gouveia Aphis gossypii; biosafety; genetic modified organism; nontarget pest; Cry toxin Aphis gossypii; biossegurança; organismo geneticamente modificado; praga não‑alvo; toxina Cry The objective of this work was to develop an experimental protocol to assess the impact of Bt cotton on bionomics and on plant choice for Aphis gossypii colonization. The bionomics of the cottonaphid was assessed in greenhouse with insects reared in individual cages containing Bt cotton plants of the variety DP 404 BG (Bollgard) or its nontransformed isoline DP 4049. Cages with Bt cotton and non-Bt cottonwere used as choosing arena for evaluation of winged adults preference. There was no signifi cant difference for pre-reproduction period (immature phase), reproduction period, longevity, survivorship curve total and daily production of offspring by female, and curve of accumulated production of offspring by the population.There was no preference of colonization for any plant by winged adults, which indicates equivalent rates of colonization of the initial populations. Bt cotton plants do not affect the population dynamics of A. gossypii,and do not increase its potential risk as pest. O objetivo deste trabalho foi desenvolver um protocolo experimental para avaliar o impacto do algodoeiro Bt na bionomia e na escolha de plantas para colonização pelo pulgão-do-algodoeiro (Aphisgossypii). A bionomia do pulgão foi avaliada em casa de vegetação com insetos criados em gaiolas individuais com plantas de algodão Bt, da variedade DP 404 BG (Bollgard), ou sua isolinha não transformada DP 4049. Gaiolas contendo vasos com plantas de algodoeiro Bt e não-Bt foram usadas como arena de escolha, para a avaliação de preferência de adultos alados. O período pré-reprodutivo e reprodutivo, a longevidade, a curva de sobrevivência, a produção de prole total e diária por fêmea e a curva acumulada de produção de prole da população não apresentaram diferenças signifi cativas. Não foi observada diferença na escolha de plantas para colonização por indivíduos alados, o que indica taxas equivalentes de colonização nas populações iniciais.O algodoeiro Bt não afeta a dinâmica populacional de A. gossypii e não aumenta seu potencial de risco comopraga. Pesquisa Agropecuaria Brasileira Pesquisa Agropecuária Brasileira CNPq, FINEPE 2008-10-29 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf https://seer.sct.embrapa.br/index.php/pab/article/view/792 Pesquisa Agropecuaria Brasileira; v.43, n.10, out. 2008; 1251-1256 Pesquisa Agropecuária Brasileira; v.43, n.10, out. 2008; 1251-1256 1678-3921 0100-104x por https://seer.sct.embrapa.br/index.php/pab/article/view/792/5509
institution EMBRAPA
collection OJS
country Brasil
countrycode BR
component Revista
access En linea
databasecode rev-pab-br
tag revista
region America del Sur
libraryname Sistema de bibliotecas de EMBRAPA
language por
format Digital
author Sujii, Edison Ryoiti
Togni, Pedro Henrique Brun
Nakasu, Erich Yukio Tempel
Pires, Carmen Silvia Soares
Paula, Débora Pires de
Fontes, Eliana Maria Gouveia
spellingShingle Sujii, Edison Ryoiti
Togni, Pedro Henrique Brun
Nakasu, Erich Yukio Tempel
Pires, Carmen Silvia Soares
Paula, Débora Pires de
Fontes, Eliana Maria Gouveia
Impact of Bt cotton on the population dynamics of the cotton aphid in greenhouse
author_facet Sujii, Edison Ryoiti
Togni, Pedro Henrique Brun
Nakasu, Erich Yukio Tempel
Pires, Carmen Silvia Soares
Paula, Débora Pires de
Fontes, Eliana Maria Gouveia
author_sort Sujii, Edison Ryoiti
title Impact of Bt cotton on the population dynamics of the cotton aphid in greenhouse
title_short Impact of Bt cotton on the population dynamics of the cotton aphid in greenhouse
title_full Impact of Bt cotton on the population dynamics of the cotton aphid in greenhouse
title_fullStr Impact of Bt cotton on the population dynamics of the cotton aphid in greenhouse
title_full_unstemmed Impact of Bt cotton on the population dynamics of the cotton aphid in greenhouse
title_sort impact of bt cotton on the population dynamics of the cotton aphid in greenhouse
description The objective of this work was to develop an experimental protocol to assess the impact of Bt cotton on bionomics and on plant choice for Aphis gossypii colonization. The bionomics of the cottonaphid was assessed in greenhouse with insects reared in individual cages containing Bt cotton plants of the variety DP 404 BG (Bollgard) or its nontransformed isoline DP 4049. Cages with Bt cotton and non-Bt cottonwere used as choosing arena for evaluation of winged adults preference. There was no signifi cant difference for pre-reproduction period (immature phase), reproduction period, longevity, survivorship curve total and daily production of offspring by female, and curve of accumulated production of offspring by the population.There was no preference of colonization for any plant by winged adults, which indicates equivalent rates of colonization of the initial populations. Bt cotton plants do not affect the population dynamics of A. gossypii,and do not increase its potential risk as pest.
publisher Pesquisa Agropecuaria Brasileira
publishDate 2008
url https://seer.sct.embrapa.br/index.php/pab/article/view/792
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