um Níveis basais de corticosterona de uma ave migratória do cerrado brasileiro
DOI:
https://doi.org/10.37002/biodiversidadebrasileira.v15i2.2752Keywords:
Hormônios de aves , níveis de estresse , cerrado neotropicalAbstract
O principal parâmetro fisiológico utilizado em análises de estresse em aves é o nível de corticosterona. Esse hormônio tem sido a principal ferramenta utilizada para correlacionar o estado fisiológico, mas pouco se sabe sobre esses níveis nas aves tropicais. A Elaenia chiriquensis albivertex é um tiranídeo migratório do cerrado brasileiro, e o objetivo deste estudo foi medir os níveis basais de corticosterona durante a fase reprodutiva. A liberação de corticosterona basal de E. chiriquensis foi de 12,96 ± 5,07 ng/mL (n = 43). Houve uma correlação positiva entre corticosterona e massa corporal (y = 4.2329x - 54.844; R² = 0.7839). O nosso estudo mostra um registro raro da corticosterona basal de uma ave tropical durante a migração, com potencial para avaliar a saúde dos indivíduos, por exemplo, em programas de reabilitação e realocação de animais.
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