Effect of urbanization on the micronucleus frequency in birds from forest fragments

Baesse, Camilla Queiroz; Tolentino, Vitor Carneiro de Magalhães; Morelli, Sandra; Melo, Celine de

doi:10.1016/j.ecoenv.2019.01.026

Cited by 22 publications

(18 citation statements)

References 51 publications

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“…The fragment encompasses 30 ha composed of seasonal semideciduous forest with gallery forest at is lower limit and abrupt transitions at artificial borders with pastures at the upper and lateral limits (Lopes 2010). The forest is adjacent to the highway BR 050, which is heavily trafficked by motor vehicles (Baesse et al 2019). The climate of the region is Aw type, according to the climatic classification of Köppen, with a dry season (April-September) and a rainy season (October-March).…”

Section: Methodsmentioning

confidence: 99%

“…Another alteration evidenced in hematological examinations is the presence of erythrocyte micronuclei, which has been associated with anthropic influences (Baesse et al 2015, 2019, Martínez-Haro et al 2017. Micronuclei are small, round structures located in the cytoplasm.…”

Section: Introductionmentioning

confidence: 99%

“…Their shape is due to factors or events that interfere with the structure or function of the mitotic apparatus, which produces failures in the incorporation of chromosomes or chromosomal fragments in the principal nucleus (Fenech et al 2006, Thomas et al 2009. Mi-cronuclei reflect chromosomal damage and, therefore, can act as biomarkers of genotoxicity (Hitoshi et al 2003, Baesse et al 2015, 2019. Analysis of micronuclei can be used as an efficient method to assess mutagenicity of, and sensitivity to, environmental contaminants (Wolf et al 2002, Baesse et al 2019.…”

Section: Introductionmentioning

confidence: 99%

“…Mi-cronuclei reflect chromosomal damage and, therefore, can act as biomarkers of genotoxicity (Hitoshi et al 2003, Baesse et al 2015, 2019. Analysis of micronuclei can be used as an efficient method to assess mutagenicity of, and sensitivity to, environmental contaminants (Wolf et al 2002, Baesse et al 2019. Micronuclei and the H/L ratio can be viewed as relatively independent indicators of stress, and any association between the two would lend support to their use as physiological stress indicators.…”

Section: Introductionmentioning

confidence: 99%

“…The helmeted manakin has been considered useful in ecology studies because it is territorial, dependent on the forest environment and is sensitive to the effects of disturbances, being a species that can show responses to environment changes (Silva and Melo 2011, Gonçalves 2012, Dantas 2013, Teles 2013, Baesse et al 2015, 2019, Paniago 2016). The present study proposed to examine the leukocyte profile of a population of A. galeata and to associate it with biological and ecological attributes of the species.…”

Section: Introductionmentioning

confidence: 99%

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Leukocyte profile of the helmeted manakin, Antilophia galeata (Passeriformes: Pipridae) in a Cerrado forest fragment

Ribeiro¹,

Baesse²,

Cury³

et al. 2020

Zoologia

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Changes in the amounts and proportions of leukocytes, known as leucocyte profiles, have been documented for several bird species and have been used to measure stress levels in these animals. The present work ascertained the biological and ecological attributes that influence the leukocyte profile of Antilophia galeata (Lichtenstein, 1823), the helmeted manakin. This species has been deemed useful in ecological studies because it responds to environmental changes. Blood samples drawn from 89 individuals of A. galeata captured in a Cerrado forest fragment were subjected to analysis under optical microscopy to identify and quantify leukocytes and micronuclei. The number of lymphocytes was greater for males, non-reproductive individuals and individuals infected with ticks. None of the leukocyte components differed in relation to age, molting or body condition index. The amount of micronuclei was correlated with values for total leukocytes, H/L ratio, heterophils, basophils and monocytes. The results suggest that reproduction may be an immunosuppressive factor for the species, producing sexual differences in lymphocyte availability. In addition, biomarkers of genotoxic damage (micronuclei) were related to the amount of leukocytes, indicating that individuals may be sensitive to environmental disturbances. Leukocyte profiles can be considered a useful tool for addressing ecological questions that are relevant to the conservation of species in degraded environments.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Leukocyte profile of the helmeted manakin, Antilophia galeata (Passeriformes: Pipridae) in a Cerrado forest fragment

Ribeiro¹,

Baesse²,

Cury³

et al. 2020

Zoologia

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Erythrocyte micronucleus cytome assay in Passer domesticus and environmental remote sensing for inferring the quality of wild, rural, and urban areas

Mendez

Quero²,

Gorla³

2022

Environ Monit Assess

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The study of biomarkers in free-living birds can help indicate the degree of contamination in distinct environments. In addition, these environments can be characterized through the information provided by satellite images. The objectives of the present study were to analyze the types and quantity of cytogenetic biomarkers in Passer domesticus (sparrow) from three different environments; wild, rural and urban; and to analyze them in the context of land use and anthropogenic actions. Five thousand erythrocytes per bird were analyzed for the following nuclear alterations (NA): micronuclei (MN), nuclear buds, notched nuclei, binucleated cells, nucleoplasmic bridges, nuclear tails, peripheral nuclei and enucleated cells. In the study, wild birds exhibited five types of NA, seven types were found in rural birds; and all types were encountered in urban birds. The only NA that exceeded a frequency of 2 NA/ 1000 erythrocytes were peripheral nuclei in birds from the rural and urban sites, the latter environment characterized by 87% urban soil and air pollution. The highest frequencies of MN, peripheral nuclei and enucleated erythrocytes were recorded in sparrows from the rural site (p≤0.05).This area had been sprayed with chlorpyrifos 48%, the most widely used organophosphate in the region. Sparrows from the wild site, made up of 100% native forest, had higher frequencies of notched nuclei (p≤0.05). A precedent is set for the use of environmental remote sensing in a complementary manner with cytogenetic biomarker studies in birds for a joint analysis in environmental assessment.

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Effects of urban proximity and the occurrence of erythroplastids in Antilophia galeata

Gonçalves

Ribeiro

Oliveira

et al. 2020

Environ Sci Pollut Res

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Effect of urbanization on the micronucleus frequency in birds from forest fragments

Cited by 22 publications

References 51 publications

Leukocyte profile of the helmeted manakin, Antilophia galeata (Passeriformes: Pipridae) in a Cerrado forest fragment

Leukocyte profile of the helmeted manakin, Antilophia galeata (Passeriformes: Pipridae) in a Cerrado forest fragment

Erythrocyte micronucleus cytome assay in Passer domesticus and environmental remote sensing for inferring the quality of wild, rural, and urban areas

Effects of urban proximity and the occurrence of erythroplastids in Antilophia galeata

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