Clareiras naturais associadas ao estresse oxidativo em willisornis poecilinotus (Aves: Thamnophilidae) em uma floresta tropical

Translated title of the contribution: Natural gaps associated with oxidative stress in willisornis poecilinotus (Aves: Thamnophilidae) in a tropical forest

Andreza de Lourdes Souza Gomes, Andrey Felipe Gomes Gonçalves, José Luiz Fernandes Vieira, Maria Luiza Videiro Marceliano, José Maria Cardoso da Silva

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

Natural disturbances in tropical forests modify the availability and quality of resources and alter the patterns of bird distribution. These environmental changes increase the metabolic rate and disrupt the redox balance promoting oxidative stress. This study aimed to compare the abundance of Willisornis poecilinotus between gaps and the understory of a forest with undisturbed canopy at Caxiuanã National Forest. The abundance was correlated with vegetation heights. The oxidative stress and the stress promoting factors were determined in both sites of sampling. We captured 81 specimens of W. poecilinotus. The number of captures was high in gaps. The specimens sampled at gaps showed high levels of oxidative stress. The biomarkers of oxidative stress were significantly correlated in gaps. The variability of oxidative stress and oxidative damage were explained only by site of sampling. These results suggest that gaps are stressors sites to W. poecilinotus, which probably can be due to an increase of metabolic rate to deal with new flight strategies of foraging and avoid predation.

Translated title of the contributionNatural gaps associated with oxidative stress in willisornis poecilinotus (Aves: Thamnophilidae) in a tropical forest
Original languagePortuguese
Pages (from-to)207-212
Number of pages6
JournalActa Amazonica
Volume44
Issue number2
DOIs
StatePublished - 2014

Keywords

  • Antioxidants
  • Environmental disturbances
  • Lipid peroxidation
  • Redox balance

ASJC Scopus subject areas

  • Agricultural and Biological Sciences(all)

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