Laboratory evaluation of the effects of Manilkara subsericea (Mart.) Dubard extracts and triterpenes on the development of Dysdercus peruvianus and Oncopeltus fasciatus

Authors

  • Caio P Fernandes,

    1. Laboratórios de Tecnologia de Produtos Naturais, Faculdade de Farmácia, Universidade Federal Fluminense, Niterói, RJ, Brazil
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  • Alexandre Xavier,

    1. Laboratório de Biologia de Insetos—LABI, Departamento de Biologia Geral (GBG), Universidade Federal Fluminense, Niterói, RJ, Brazil
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  • João Pedro Furtado Pacheco,

    1. Laboratório de Biologia de Insetos—LABI, Departamento de Biologia Geral (GBG), Universidade Federal Fluminense, Niterói, RJ, Brazil
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  • Marcelo Guerra Santos,

    1. Departamento de Ciências, Faculdade de Formação de Professores, Universidade Estadual do Rio de Janeiro, São Gonçalo, RJ, Brazil
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  • Rodrigo Mexas,

    1. Laboratório de Analises e Produção de Imagens—Fiocruz, Rio de Janeiro, RJ, Brazil
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  • Norman A Ratcliffe,

    1. Department of Biosciences, College of Science, Swansea University, Swansea, UK
    2. Instituto de Biologia, Universidade Federal Fluminense, Niterói, RJ, Brazil
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  • Marcelo Salabert Gonzalez,

    1. Laboratório de Biologia de Insetos—LABI, Departamento de Biologia Geral (GBG), Universidade Federal Fluminense, Niterói, RJ, Brazil
    2. Instituto Nacional de Entomologia Molecular (INCT-EM, CNPq), Brazil
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  • Cícero Brasileiro Mello,

    1. Laboratório de Biologia de Insetos—LABI, Departamento de Biologia Geral (GBG), Universidade Federal Fluminense, Niterói, RJ, Brazil
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  • Leandro Rocha,

    1. Laboratórios de Tecnologia de Produtos Naturais, Faculdade de Farmácia, Universidade Federal Fluminense, Niterói, RJ, Brazil
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  • Denise Feder

    Corresponding author
    1. Laboratório de Biologia de Insetos—LABI, Departamento de Biologia Geral (GBG), Universidade Federal Fluminense, Niterói, RJ, Brazil
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Denise Feder, Laboratório de Biologia de Insetos—LABI, Departamento de Biologia Geral (GBG), Universidade Federal Fluminense, Morro do Valonguinho S/No, CEP 24001-970, Niterói, RJ, Brazil. E-mail: mdfeder@id.uff.br

Abstract

BACKGROUND: Studies were carried out to evaluate the effects of Manilkara subsericea extracts and triterpenes on the development of two species of agricultural pest insects, Oncopelus fasciatus and Dysdercus peruvianus.

RESULTS: All treatments of insects with M. subsericea extracts induced mortality, delayed development and inhibited moulting. Some extracts assayed (FH, FB and FD in D. peruvianus, and FH, FB and FEA in O. fasciatus) also produced body deformities in the few adults that emerged. Other extracts (FH, FEA, FB, FD and LET in both insects), however, induced either permanent (overaged) or extranumerary nymphs, both of which were unable to achieve the adult stage and reproductive status. The insects were also treated with triterpenes (α- and β-amyrin acetates) which showed high lethality at 30 days after treatment and delayed the intermoult period so that overaged nymphs were detected.

CONCLUSION: The results indicate that extracts and triterpenes from Manilkara subsericea act as potent growth inhibitors of phytophagous hemipteran nymphs. It is also concluded that the mixture of several different molecules in the extracts used produces synergic effects that do not occur after using the triterpenes (PFT) alone. These secondary metabolites in the M. subsericea extracts can potentially be used in integrated control programmes against crop pests. Copyright © 2012 Society of Chemical Industry

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