Can Bacillus thuringiensis affect the biological variables of natural enemies of Lepidoptera?

Can Bacillus thuringiensis affect the biological variables of natural enemies of Lepidoptera?

ABSTRACT: The entomopathogen Bacillus thuringiensis (Bt) is widely used as one of the ingredients in pest control formulations, but researches conducted on its effect on non-target organisms are still in the nascent stage. This investigation aimed to uncover if Bt treated with Tenebrio molitor (Coleoptera: Tenebrionidae) larvae and pupae could affect the biological variables of Podisus nigrispinus (Hemiptera: Pentatomidae) and Palmistichus elaeisis (Hymenoptera: Eulophidae), all of which established natural enemies of leaf defoliator caterpillars in the eucalyptus culture. Larvae of T. molitor were fed on wheat bran containing different concentrations of B. thuringiensis (0.00; 0.25; 0.50; 1.00; 2.00 and 4.00 g Agree/kg bran). When the larvae attained size of about 2 cm, they were used as prey for P. nigrispinus (Bioassay I), and their pupae used as hosts for P. elaeisis (Bioassay II). Only the biological variables oviposition period and egg numbers by posture of the predator P. nigrispinus were altered. The biological variables of P. elaeisis were not altered, since it was possible to use these control methods within the integrated pest management.

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Main Authors: Carvalho,Gabriella Aparecida Salis de, Martins,Daniel Júnior, Brito,Isadora Mileny Costa de, Assis Júnior,Sebastião Lourenço de, Soares,Marcus Alvarenga, Laia,Marcelo Luiz de, Valicente,Fernando Hercos
Format: Digital revista
Language:English
Published: Instituto Biológico 2018
Online Access:http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1808-16572018000100233
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spelling oai:scielo:S1808-165720180001002332018-11-07Can Bacillus thuringiensis affect the biological variables of natural enemies of Lepidoptera?Carvalho,Gabriella Aparecida Salis deMartins,Daniel JúniorBrito,Isadora Mileny Costa deAssis Júnior,Sebastião Lourenço deSoares,Marcus AlvarengaLaia,Marcelo Luiz deValicente,Fernando Hercos Podisus nigrispinus Palmistichus elaeisis biological insecticide defoliating caterpillars ABSTRACT: The entomopathogen Bacillus thuringiensis (Bt) is widely used as one of the ingredients in pest control formulations, but researches conducted on its effect on non-target organisms are still in the nascent stage. This investigation aimed to uncover if Bt treated with Tenebrio molitor (Coleoptera: Tenebrionidae) larvae and pupae could affect the biological variables of Podisus nigrispinus (Hemiptera: Pentatomidae) and Palmistichus elaeisis (Hymenoptera: Eulophidae), all of which established natural enemies of leaf defoliator caterpillars in the eucalyptus culture. Larvae of T. molitor were fed on wheat bran containing different concentrations of B. thuringiensis (0.00; 0.25; 0.50; 1.00; 2.00 and 4.00 g Agree/kg bran). When the larvae attained size of about 2 cm, they were used as prey for P. nigrispinus (Bioassay I), and their pupae used as hosts for P. elaeisis (Bioassay II). Only the biological variables oviposition period and egg numbers by posture of the predator P. nigrispinus were altered. The biological variables of P. elaeisis were not altered, since it was possible to use these control methods within the integrated pest management.info:eu-repo/semantics/openAccessInstituto BiológicoArquivos do Instituto Biológico v.85 20182018-01-01info:eu-repo/semantics/articletext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1808-16572018000100233en10.1590/1808-1657000052018
institution SCIELO
collection OJS
country Brasil
countrycode BR
component Revista
access En linea
databasecode rev-scielo-br
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region America del Sur
libraryname SciELO
language English
format Digital
author Carvalho,Gabriella Aparecida Salis de
Martins,Daniel Júnior
Brito,Isadora Mileny Costa de
Assis Júnior,Sebastião Lourenço de
Soares,Marcus Alvarenga
Laia,Marcelo Luiz de
Valicente,Fernando Hercos
spellingShingle Carvalho,Gabriella Aparecida Salis de
Martins,Daniel Júnior
Brito,Isadora Mileny Costa de
Assis Júnior,Sebastião Lourenço de
Soares,Marcus Alvarenga
Laia,Marcelo Luiz de
Valicente,Fernando Hercos
Can Bacillus thuringiensis affect the biological variables of natural enemies of Lepidoptera?
author_facet Carvalho,Gabriella Aparecida Salis de
Martins,Daniel Júnior
Brito,Isadora Mileny Costa de
Assis Júnior,Sebastião Lourenço de
Soares,Marcus Alvarenga
Laia,Marcelo Luiz de
Valicente,Fernando Hercos
author_sort Carvalho,Gabriella Aparecida Salis de
title Can Bacillus thuringiensis affect the biological variables of natural enemies of Lepidoptera?
title_short Can Bacillus thuringiensis affect the biological variables of natural enemies of Lepidoptera?
title_full Can Bacillus thuringiensis affect the biological variables of natural enemies of Lepidoptera?
title_fullStr Can Bacillus thuringiensis affect the biological variables of natural enemies of Lepidoptera?
title_full_unstemmed Can Bacillus thuringiensis affect the biological variables of natural enemies of Lepidoptera?
title_sort can bacillus thuringiensis affect the biological variables of natural enemies of lepidoptera?
description ABSTRACT: The entomopathogen Bacillus thuringiensis (Bt) is widely used as one of the ingredients in pest control formulations, but researches conducted on its effect on non-target organisms are still in the nascent stage. This investigation aimed to uncover if Bt treated with Tenebrio molitor (Coleoptera: Tenebrionidae) larvae and pupae could affect the biological variables of Podisus nigrispinus (Hemiptera: Pentatomidae) and Palmistichus elaeisis (Hymenoptera: Eulophidae), all of which established natural enemies of leaf defoliator caterpillars in the eucalyptus culture. Larvae of T. molitor were fed on wheat bran containing different concentrations of B. thuringiensis (0.00; 0.25; 0.50; 1.00; 2.00 and 4.00 g Agree/kg bran). When the larvae attained size of about 2 cm, they were used as prey for P. nigrispinus (Bioassay I), and their pupae used as hosts for P. elaeisis (Bioassay II). Only the biological variables oviposition period and egg numbers by posture of the predator P. nigrispinus were altered. The biological variables of P. elaeisis were not altered, since it was possible to use these control methods within the integrated pest management.
publisher Instituto Biológico
publishDate 2018
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1808-16572018000100233
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