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https://locus.ufv.br//handle/123456789/23609
Tipo: | Artigo |
Título: | Toxicity and cytotoxicity of the insecticide imidacloprid in the midgut of the predatory bug, Podisus nigrispinus |
Autor(es): | Martínez, Luis Carlos Plata-Rueda, Angelica Gonçalves, Wagner Gonzaga Freire, André Filipe Penha Aires Zanuncio, José Cola Bozdoğan, Hakan Serrão, José Eduardo |
Abstract: | The selectivity of insecticides on natural enemies in pest control are an important strategy for Integrated Pest Management. However, insecticides can have side effects on non-target organisms such as natural enemies. This study evaluated the histological and cytological changes mediated by the sublethal concentration of the imidacloprid insecticide on the midgut of non-target predator Podisus nigrispinus (Heteroptera: Pentatomidae), used in the biological control of pests. Imidacloprid was toxic for P. nigrispinus with LC50 = 3.75 mg L−1 and survival of 51.8%. This sublethal concentration of imidacloprid causes histological alterations in the midgut epithelium and cytotoxic features were irregular border epithelium, cytoplasmic vacuolation, and apocrine secretions in the first 6 h after exposure with the insecticide. Apoptosis in the digestive cells occurs after 12 h of exposure in the midgut. These results suggest that imidacloprid may affect the digestive physiology of P. nigrispinus and compromise the effective predation of this insect a biological control agent. The associated use of this insecticide with the predator in pest control should be carefully evaluated. |
Palavras-chave: | Apoptosis Digestive epithelial cells Cytotoxicity Imidacloprid Histopathology Non-target organism |
Editor: | Ecotoxicology and Environmental Safety |
Tipo de Acesso: | 2018 Elsevier Inc. All rights reserved. |
URI: | https://doi.org/10.1016/j.ecoenv.2018.09.124 http://www.locus.ufv.br/handle/123456789/23609 |
Data do documento: | 15-Jan-2019 |
Aparece nas coleções: | Artigos |
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artigo.pdf Until 2100-12-31 | Texto completo | 1,84 MB | Adobe PDF | Visualizar/Abrir ACESSO RESTRITO |
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