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

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          Abstract

          ABSTRACT 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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          Most cited references 79

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          RESTITUTION OF MASS–SIZE RESIDUALS: VALIDATING BODY CONDITION INDICES

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            The use of leukocyte profiles to measure stress in vertebrates: a review for ecologists

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              Evaluation of the Heterophil/Lymphocyte Ratio as a Measure of Stress in Chickens

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                Author and article information

                Journal
                zool
                Zoologia (Curitiba)
                Zoologia (Curitiba)
                Sociedade Brasileira de Zoologia (Curitiba, PR, Brazil )
                1984-4670
                1984-4689
                2020
                : 37
                Affiliations
                Uberlândia Minas Gerais orgnameUniversidade Federal de Uberlândia orgdiv1Instituto de Ciências Biomédicas Brazil
                Uberlândia Minas Gerais orgnameUniversidade Federal de Uberlândia orgdiv1Instituto de Biotecnologia Brazil
                Uberlândia Minas Gerais orgnameUniversidade Federal de Uberlândia orgdiv1Instituto de Biologia Brazil
                Article
                S1984-46702020000100321 S1984-4670(20)03700000321
                10.3897/zoologia.37.e46441

                This work is licensed under a Creative Commons Attribution 4.0 International License.

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                Figures: 0, Tables: 0, Equations: 0, References: 75, Pages: 0
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