Use este identificador para citar ou linkar para este item: https://locus.ufv.br//handle/123456789/24241
Tipo: Artigo
Título: Spinosad-mediated effects on survival, overall group activity and the midgut of workers of Partamona helleri (Hymenoptera: Apidae)
Autor(es): Araujo, Renan dos Santos
Lopes, Marcos Pereira
Barbosa, Wagner Faria
Gonçalves, Wagner Gonzaga
Fernandes, Kenner Morais
Martins, Gustavo Ferreira
Tavares, Mara Garcia
Abstract: Populations of stingless bees have declined around the world and pesticides have been indicated as one of the possible causes of this decrease. Spinosad, which is synthesized from the fermentation process produced by the soil actinomycete Saccharopolyspora spinosa, is one of the most used bioinsecticides today. This study aimed to evaluate the possible effects of spinosad (formulation) on survival, general group activity and the processes of autophagy, apoptosis and oxidative stress in two organs (midgut and brain) of workers of Partamona helleri, after 24 h of oral exposure. Workers were orally exposed to different concentrations of spinosad. The concentration (8.16 × 10−3 mg a.i./mL) that led to the mortality of approximately half the number of treated bees was considered LC50 and was used in behavior, histology and immunofluorescence bioassays. The results revealed that bee survival was substantially reduced with increasing spinosad concentrations. The LC50 of the bioinsecticide compromised general group activity, caused morphological alterations in the midgut and intensified the processes of autophagy, apoptosis and oxidative stress in this organ. The brain, on the other hand, did not present significant alterations under the tested conditions. The data obtained demonstrate, therefore, that spinosad negatively affects individual survival, general group activity and the midgut epithelium of P. helleri.
Palavras-chave: Apoptosis
Autophagy
Oxidative stress
Bioinsecticide
Sublethal effects
Editor: Ecotoxicology and Environmental Safety
Tipo de Acesso: Elsevier B. V.
URI: https://doi.org/10.1016/j.ecoenv.2019.03.050
http://www.locus.ufv.br/handle/123456789/24241
Data do documento: 15-Jul-2019
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