Observations on midgut of Apis mellifera workers (Hymenoptera: Apoidea) under controlled acute exposures to a Bacillus thuringiensis-based biopesticide

Fabio Bucchieri, Vera D’Urso, Gaetana Mazzeo, Danilo G. M. Vitale, Valerio Vaccalluzzo, Renata Viscuso, Fabio Bucchieri, Giorgio Sabella

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5 Citations (Scopus)

Abstract

Morphostructural investigations have been carried out on Apis mellifera workers treated with single controlled acute exposures to a biopesticide containing Bacillus thuringiensis (Bt), to detect midgut changes until 96 h. Our findings show concentration-dependence of these changes, reflecting in different degrees on both mortality and behaviour. In particular, some midgut changes are also found 96 h after treatment. Our results show that the tested product does not affect survival at presumable environmental concentrations, so confirming the lesser toxicity of Bt-based biopesticides compared to other pesticides. However, in the light of the discovered long-term changes, we discuss the opportunity of taking into account possible chronic exposures to Bt-based products on A. mellifera.
Original languageEnglish
Pages (from-to)51-62
Number of pages12
JournalApidologie
Volume48
Publication statusPublished - 2017

All Science Journal Classification (ASJC) codes

  • Insect Science

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