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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 |
Aparece nas coleções: | Artigos |
Arquivos associados a este item:
Arquivo | Descrição | Tamanho | Formato | |
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artigo.pdf Until 2100-12-31 | Texto completo | 2,05 MB | Adobe PDF | Visualizar/Abrir ACESSO RESTRITO |
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