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Larvicidal and adulticidal effects and ultrastructural changes of larvae midgut epithelium of musca domestica (diptera: muscidae) fed with bacillus thuringiensis var. kyushuensis
Pereira, Lorrane de Andrade; Ferreira, Vitor dos Santos Baia; Leite, Nahara de Souza; Souza, Sandra Maria de Oliveira; Queiroz, Margareth Maria de Carvalho; Côrte-Real, Suzana; Zahner, Viviane.
  • Pereira, Lorrane de Andrade; Fiocruz. Instituto Oswaldo Cruz. Programa de Pós-Graduação em Biodiversidade e Saúde. Rio de Janeiro. BR
  • Ferreira, Vitor dos Santos Baia; Fiocruz. Instituto Oswaldo Cruz. Laboratório de Entomologia Médica e Forense. Rio de Janeiro. BR
  • Leite, Nahara de Souza; Fiocruz. Instituto Oswaldo Cruz. Laboratório de Entomologia Médica e Forense. Rio de Janeiro. BR
  • Souza, Sandra Maria de Oliveira; Fiocruz. Instituto Oswaldo Cruz. Laboratório de Biologia Estrutural. Rio de Janeiro. BR
  • Queiroz, Margareth Maria de Carvalho; Fiocruz. Instituto Oswaldo Cruz. Laboratório de Entomologia Médica e Forense. Rio de Janeiro. BR
  • Côrte-Real, Suzana; Fiocruz. Instituto Oswaldo Cruz. Laboratório de Biologia Estrutural. Rio de Janeiro. BR
  • Zahner, Viviane; Fiocruz. Instituto Oswaldo Cruz. Laboratório de Entomologia Médica e Forense. Rio de Janeiro. BR
Rev. Soc. Bras. Med. Trop ; 52: e20190135, 2019. graf
Article in English | LILACS | ID: biblio-1041502
ABSTRACT
Abstract

INTRODUCTION:

Musca domestica is resistant to many insecticides; hence, biological control is a suitable alternative.

METHODS:

We evaluated the lethality of strain Btk176 towards the larval and adult M. domestica and the histopathological effects in the larvae midgut.

RESULTS:

We observed 99% larval and 78.9% adult mortality within 48 hours of spore ingestion (dosage, 2.4×108 CFU/ml). The histopathological effects were consistent with cytotoxicity. PCR analysis showed the presence of the cry1Ba gene. Transmission electron microscopy revealed a bipyramidal parasporal body. Thurigiensin activity was not detected.

CONCLUSIONS:

The serovar, Btk176 might be a potential biocontrol agent for houseflies.
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Full text: Available Index: LILACS (Americas) Main subject: Bacillus thuringiensis / Bacterial Toxins / Houseflies / Insecticides / Larva Type of study: Evaluation studies Limits: Animals Language: English Journal: Rev. Soc. Bras. Med. Trop Journal subject: Tropical Medicine Year: 2019 Type: Article Affiliation country: Brazil Institution/Affiliation country: Fiocruz/BR

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Full text: Available Index: LILACS (Americas) Main subject: Bacillus thuringiensis / Bacterial Toxins / Houseflies / Insecticides / Larva Type of study: Evaluation studies Limits: Animals Language: English Journal: Rev. Soc. Bras. Med. Trop Journal subject: Tropical Medicine Year: 2019 Type: Article Affiliation country: Brazil Institution/Affiliation country: Fiocruz/BR