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metadata.artigo.dc.title: Ecotoxicological effects of the insecticide fipronil in brazilian native stingless bees melipona scutellaris (Apidae: Meliponini)
metadata.artigo.dc.creator: Morais, Cássio Resende de
Travençolo, Bruno Augusto Nassif
Carvalho, Stephan Malfitano
Beletti, Marcelo Emílio
Santos, Vanessa Santana Vieira
Campos, Carlos Fernando
Campos Júnior, Edimar Olegário de
Pereira, Boscolli Barbosa
Naves, Maria Paula Carvalho
Rezende, Alexandre Azenha Alves de
Spanó, Mário Antônio
Vieira, Carlos Ueira
Bonetti, Ana Maria
metadata.artigo.dc.subject: Behavioral change
Epigenetic profile
Stingless bees
Sublethal concentration
metadata.artigo.dc.publisher: Elsevier Sep-2018
metadata.artigo.dc.identifier.citation: MORAIS, C. R. de et al. Ecotoxicological effects of the insecticide fipronil in brazilian native stingless bees melipona scutellaris (Apidae: Meliponini). Chemosphere, [S.l.], v. 206, p. 632-642, Sept. 2018.
metadata.artigo.dc.description.abstract: Melipona scutellaris Latreille, 1811 (Hymenoptera, Apidae) is a pollinator of various native and cultivated plants. Because of the expansion of agriculture and the need to ensure pest control, the use of insecticides such as fipronil (FP) has increased. This study aimed to evaluate the effects of sublethal doses of FP insecticide on M. scutellaris at different time intervals (6, 12, and 24 h) after exposure, via individually analyzed behavioral biomarkers (locomotor activity, behavioral change) as well as the effect of FP on different brain structures of bees (mushroom bodies, antennal cells, and optic cells), using sub-individual cell biomarkers (heterochromatin dispersion, total nuclear and heterochromatic volume). Forager bees were collected when they were returning to the nest and were exposed to three different concentrations of FP (0.40, 0.040, and 0.0040 ng a.i/bee) by topical application. The results revealed a reduction in the mean velocity, lethargy, motor difficulty, paralysis, and hyperexcitation in all groups of bees treated with FP. A modification of the heterochromatic dispersion pattern and changes in the total volume of the nucleus and heterochromatin were also observed in the mushroom bodies (6, 12, and 24 h of exposure) and antennal lobes (6 and 12 h) of bees exposed to 0.0040 ng a.i/bee (LD50/100). FP is toxic to M. scutellaris and impairs the essential functions required for the foraging activity.
metadata.artigo.dc.language: en_US
Appears in Collections:DEG - Artigos publicados em periódicos

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