INVESTIGADORES
GASTÓN MarÍa Soledad
artículos
Título:
Artificial light at night and captivity induces differential effects on leukocyte profile, body condition and erythrocyte size of a diurnal toad
Autor/es:
GASTÓN, M.S.; PEREYRA, L.C.; VAIRA, M.
Revista:
JOURNAL OF EXPERIMENTAL ZOOLOGY PART A-ECOLOGICAL GENETICS AND PHYSIOLOGY
Editorial:
WILEY-LISS, DIV JOHN WILEY & SONS INC
Referencias:
Lugar: New York; Año: 2019 vol. 331 p. 93 - 102
ISSN:
1932-5223
Resumen:
Light pollution or artificial lighting at night (ALAN) is an emerging threat to biodiversity that can disrupt physiological processes and behaviors. Since ALAN stressful effects are little studied in diurnal amphibian species, we investigated if chronic ALAN exposure affects the leukocyte profile, body condition and blood cell sizes of a diurnal toad. We hand-captured male toads of Melanophryniscus rubriventris in Angosto de Jaire (Jujuy, Argentina). We prepared blood smears from three groups of toads: ?field? (toads processed in the field immediately after capture), ?natural light? (toads kept in the laboratory under captivity with natural photoperiod), and ?constant light? (toads kept in the laboratory under captivity with constant photoperiod/ALAN). We observed significantly higher neutrophil proportions and N:L ratio in toads under constant light treatment. In addition we observed significantly better body condition and higher erythrocyte size in field toads compared to captive toads. In summary, ALAN can trigger a leukocyte response to stress in males of the diurnal toad Melanophryniscus rubriventris. In addition, captivity can affect the body condition and erythrocyte size of these toads.