Effect of different Bacillus thuringiensis strains on the longevity of Africanized honey bee

Authors

  • Gabriela Libardoni Universidade Tecnológica Federal do Paraná
  • Alfredo de Gouvea Universidade Tecnológica Federal do Paraná
  • Fabiana Martins Costa-Maia Universidade Tecnológica Federal do Paraná
  • Everton Ricardi Lozano Universidade Tecnológica Federal do Paraná
  • Patrícia Franchi de Freitas Universidade Tecnológica Federal do Paraná
  • Fernanda Caroline Colombo Universidade Tecnológica Federal do Paraná
  • Fernanda Raulino Universidade Tecnológica Federal do Paraná
  • Rodrigo Mendes Antunes Maciel Universidade Tecnológica Federal do Paraná
  • Michele Potrich Universidade Tecnológica Federal do Paraná

DOI:

https://doi.org/10.5433/1679-0359.2018v39n1p329

Keywords:

Africanized honey bee, Entomopathogenic bacteria, Selectivity.

Abstract

The aim of this study was to assess the effects of three strains of Bacillus thuringiensis (Bt) on the longevity of workers of Africanized honey bee. Solutions at a concentration of 3 × 108 spores.mL-1 (dosage) were prepared for each strain of Bt (IPS 82, BR 81, and BR 147). Three bioassays were performed as follows: spraying on the bees, contact with the sprayed surface, and candy paste incorporated with Bt. The bees of the Bt bioassay were submitted to histological analysis of the mesenteron. The longevity of workers was assessed from one to 120 hours using different ranges. It was found that the bees that were exposed to the strain of Bt IPS 82, in the spraying test, exhibited a reduced longevity. In the contact test, the BR 147 strain reduced the longevity of the bees. In the food test, in turn, the three studied strains reduced the longevity of the bees as follows: Bt IPS 82: 64.5 hours; Bt BR 81: 64.5 hours; and Bt BR 147: 60.0 hours. The Bt BR 81 strain was considered the most selective of the evaluated strains on Apis mellifera, reducing the longevity of this bee only when it came into contact by the method of ingestion.

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Author Biographies

Gabriela Libardoni, Universidade Tecnológica Federal do Paraná

Discente de Mestrado, Programa de Pós-Graduação em Zootecnia, PPGZO, Universidade Tecnológica Federal do Paraná, UTFPR, Campus Dois Vizinhos, Dois Vizinhos, PR, Brasil.

Alfredo de Gouvea, Universidade Tecnológica Federal do Paraná

Prof. Dr., Coordenação de Agronomia, UTFPR, Campus Dois Vizinhos, Dois Vizinhos, PR, Brasil.

Fabiana Martins Costa-Maia, Universidade Tecnológica Federal do Paraná

Profª Drª, Coordenação de Zootecnia, UTFPR, Campus Dois Vizinhos, Dois Vizinhos, PR, Brasil.

Everton Ricardi Lozano, Universidade Tecnológica Federal do Paraná

Prof. Dr., Coordenação de Ciências Biológicas, UTFPR, Campus Dois Vizinhos, Dois Vizinhos, PR, Brasil.

Patrícia Franchi de Freitas, Universidade Tecnológica Federal do Paraná

Profa Dra, Coordenação de Ciências Biológicas, UTFPR, Campus Dois Vizinhos, Dois Vizinhos, PR, Brasil.

Fernanda Caroline Colombo, Universidade Tecnológica Federal do Paraná

Discente de Mestrado, Programa de Pós-Graduação em Agroecossistemas, PPGSIS, UTFPR, Campus Dois Vizinhos, Dois Vizinhos, PR, Brasil.

Fernanda Raulino, Universidade Tecnológica Federal do Paraná

Discente de Mestrado, Programa de Pós-Graduação em Zootecnia, PPGZO, Universidade Tecnológica Federal do Paraná, UTFPR, Campus Dois Vizinhos. Dois Vizinhos, PR, Brasil.

Rodrigo Mendes Antunes Maciel, Universidade Tecnológica Federal do Paraná

Discente de Mestrado, Programa de Pós-Graduação em Zootecnia, PPGZO, Universidade Tecnológica Federal do Paraná, UTFPR, Campus Dois Vizinhos, Dois Vizinhos, PR, Brasil.

Michele Potrich, Universidade Tecnológica Federal do Paraná

Profa Dra, Coordenação de Ciências Biológicas, UTFPR, Campus Dois Vizinhos, Dois Vizinhos, PR, Brasil.

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Published

2018-02-16

How to Cite

Libardoni, G., Gouvea, A. de, Costa-Maia, F. M., Lozano, E. R., Freitas, P. F. de, Colombo, F. C., … Potrich, M. (2018). Effect of different Bacillus thuringiensis strains on the longevity of Africanized honey bee. Semina: Ciências Agrárias, 39(1), 329–338. https://doi.org/10.5433/1679-0359.2018v39n1p329

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