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Micronucleus and different nuclear abnormalities in wild birds in the Cerrado, Brazil

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Abstract

Free-living birds play an important role as bioindicators in natural environments. In this study, we used the micronucleus test and nuclear erythrocyte abnormalities to investigate the difference in the genotoxic damage frequency between animals in agricultural areas (soybean planting) in relation to the conserved area. It was also discussed the bird’s eating habits, which are important for ecotoxicological analysis. The results point to a difference between the insectivorous, granivorous, and omnivorous guilds. The omnivore Gnorimopsar chopi was the species that most exhibited micronucleus frequency in the protected area. In the agricultural area, the animals did not differ in the genotoxic damage frequency. In the comparison between common species in both environments, G. chopi from the agricultural area showed a micronuclei frequency almost three times higher in relation to specimens collected in the conserved area. Based on these results, this study adds to the efforts of using the micronucleus test as a simple and accessible tool for biomonitoring the wild fauna. It can be concluded that the passerine, G. chopi, due to its higher genotoxic damage frequency may be a strong candidate to indicate environmental health.

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Acknowledgements

Although the study was not funded, some authors thank their research grants, such as the Coordination for the Improvement of Higher Education Personnel—Brazil (CAPES) and the Brazilian Fund for Biodiversity. We would like to thank Instituto Federal Goiano, campus Rio Verde for research support. We would also like to thank Marcos da Silva Cunha, manager of the Parque Nacional das Emas for his support in the unit.

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Authors

Contributions

Elaine Divina Rodrigues Silveira Oliveira: writing (original draft), conceptualization, methodology, formal analysis. Marcelino Benvindo Souza: writing (original draft), conceptualization, methodology, formal analysis. Rhayane Alves Assis: conceptualization, methodology. Cirley Gomes Araújo dos Santos: conceptualization, methodology. Nathan Pereira de Lima Amorim: conceptualization, methodology. Rinneu Elias Borges: supervision, writing (original draft). Celine de Melo: supervision. Lia Raquel Souza Santos: conceptualization, methodology, supervision, writing (original draft).

Corresponding author

Correspondence to Lia Raquel de Souza Santos.

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Ethical approval

This study was approved by the Ethics Committee on the Use of Animals of the Instituto Federal Goiano (n. 2295300119) and by the Chico Mendes Institute for Biodiversity Conservation (n. 67504–1).

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All authors participated in this work.

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All authors agree to publish.

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The authors declare no conflict of interest.

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Responsible Editor: Philippe Garrigues

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Silveira, E.D.R., Benvindo-Souza, M., Assis, R.A. et al. Micronucleus and different nuclear abnormalities in wild birds in the Cerrado, Brazil. Environ Sci Pollut Res 29, 14279–14287 (2022). https://doi.org/10.1007/s11356-021-16845-4

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  • DOI: https://doi.org/10.1007/s11356-021-16845-4

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