Natural gaps associated with oxidative stress in Willisornis poecilinotus (Aves: Thamnophilidae) in a tropical forest

Acta Amazonica

Andreza De Lourdes Souza Gomes²  Andrey Felipe Gomes Gonçalves¹  José Luiz Fernandes Vieira¹  Maria Luiza Videiro Marceliano²  José Maria Cardoso Da Silva¹ 

[1] ,Museu Paraense Emílio GoeldiBelém Pará ,Brazil

关键词: antioxidants;    environmental disturbances;    redox balance;    lipid peroxidation;    antioxidantes;    distúrbios ambientais;    balanço redox;    peroxidação de lipideos;   

DOI  :  10.1590/S0044-59672014000200006

来源: SciELO

【 摘 要 】

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

【 授权许可】

CC BY   
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