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      Genetically modified corn on fall armyworm and earwig populations under field conditions Translated title: Milho geneticamente modificado e sua ação sobre a lagarta-do-cartucho e tesourinha em condições de campo

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          Abstract

          The effects of corn MON810 on the Spodoptera frugiperda (J.E. Smith) and the earwig Doru luteipes (Scudder) were tested under field conditions in Brazil. Results from MON810 corn fields were compared with those fields of conventional corn with and without the application of insecticides in four harvests in the region of Barretos, SP. It was assessed the damage to S. frugiperda via direct counts of the number of fall armyworms and adults and nymphs of the predator D. luteipes on corn plants. The rate of S. frugiperda damage and the average numbers of larvae (large and small) were lower in the MON810 corn field relative to the control plot. There were no differences (P>0.05) between treatments regarding the predator abundance in corn plants. The second crop season ("safrinha") showed the greatest extent of S. frugiperda damage and the lowest average abundance of earwigs. MON810 was effective in controlling S. frugiperda and abundance of predator D. luteipes was similar in the three treatments under field conditions.

          Translated abstract

          Avaliou-se o efeito do milho geneticamente modificado MON810 sobre o inseto praga Spodoptera frugiperda (J.E. Smith) e o seu predador Doru luteipes (Scudder) em condições de campo no Brasil. As avaliações foram conduzidas em campos de milho MON810, comparadas com milho convencional com e sem aplicação de inseticidas, em quatro safras na região de Barretos, SP. Foram avaliados os danos de S. frugiperda em plantas e a contagem do número de lagartas de S. frugiperda e de adultos e ninfas do predador D. luteipes em plantas de milho. Verificou-se uma menor porcentagem de danos de S. frugiperda e os menores números médios de lagartas (pequenas e grandes) no milho MON810. Não foram observadas diferenças (P>0,05) entre os tratamentos na abundância do predador D. luteipes em plantas de milho. A segunda época de plantio apresentou as maiores porcentagens de danos de S. frugiperda e as menores médias do número de tesourinhas coletadas. O milho MON810 foi efetivo no controle de S. frugiperda e a abundância do predador D. luteipes foi similar nos três tratamentos, em condições de campo.

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          Most cited references24

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          Sustainability of transgenic insecticidal cultivars: integrating pest genetics and ecology.

          F. Gould (1998)
          This review examines potential impacts of transgenic cultivars on insect population dynamics and evolution. Experience with classically bred, insecticidal cultivars has demonstrated that a solid understanding of both the target insect's ecology and the cultivar's performance under varied field conditions will be essential for predicting area-wide effects of transgenic cultivars on pest and natural enemy dynamics. This experience has also demonstrated the evolutionary capacity of pests for adaptive response to insecticidal traits in crops. Biochemical and genetic studies of insect adaptation to the Bacillus thuringiensis (Bt) toxins expressed by currently marketed transgenic cultivars indicate a high risk for rapid adaptation if these cultivars are misused. Theoretical and practical issues involved in implementing strategies to delay pest adaptation to insecticidal cultivars are reviewed. Emphasis is placed on examining the "high dose"/refuge strategy that has become the goal of industry and regulatory authorities.
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            Field Performance of Elite Transgenic Maize Plants Expressing an Insecticidal Protein Derived from Bacillus thuringiensis

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              Insecticide resistance in the fall armyworm, Spodoptera frugiperda (J. E. Smith)

              S.J. Yu (1991)
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                Author and article information

                Journal
                cr
                Ciência Rural
                Cienc. Rural
                Universidade Federal de Santa Maria (Santa Maria, RS, Brazil )
                0103-8478
                1678-4596
                February 2014
                : 44
                : 2
                : 203-209
                Affiliations
                [01] Brasília DF orgnameUniversidade de Brasília (UnB) orgdiv1Instituto de Ciências Biológicas orgdiv2Departamento de Zoologia Brasil frizzas@ 123456unb.br
                [02] Piracicaba SP orgnameUniversidade de São Paulo (USP) orgdiv1Escola Superior de Agricultura Luiz de Queiroz (ESALQ) orgdiv2Departamento de Entomologia e Acarologia Brasil
                [03] Planaltina DF orgnameEmbrapa Cerrados Brasil
                Article
                S0103-84782014000200002 S0103-8478(14)04400200002
                10.1590/S0103-84782014000200002
                c0df40c1-8576-4091-bf6f-e60586c21059

                This work is licensed under a Creative Commons Attribution 4.0 International License.

                History
                : 11 August 2013
                : 18 April 2013
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 24, Pages: 7
                Product

                SciELO Brazil

                Categories
                Crop Protection

                transgenic plant,Doru luteipes,MON810,Spodoptera frugiperda,planta transgênica

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