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Fish biomarker responses to perturbation by drought in streams Neotropical Ichthyology
Ondei,Luciana de Souza; Teresa,Fabrício Barreto; Garcia,Danielly Pereira; Felício,Andréia Arantes; da Silva,Danilo Grünig Humberto; de Almeida,Eduardo Alves.
ABSTRACT Drought can be viewd as a perturbation in running waters and fish are often trapped in isolated pools, where deterioration of water quality may be stressful. We investigated how this extreme condition influences response of oxidative stress biomarkers. The response of the characid Astyanax elachylepis was assessed during the dry and rainy seasons in intermittent and perennial (control) sites in streams from Brazilian savannah (Cerrado). We predicted that the biomarkers would be enhanced in the dry season in intermittent streams only due the environmentally harsh conditions in the few isolated pools that remain filled with water. As predicted, fish from the intermittent stream in the dry season presented higher gill MDA values, indicating greater...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Astyanax elachylepis; Antioxidant response; Brazilian savanna; Preparation for oxidative stress (POS); Seasonal variation.
Ano: 2020 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252020000200218
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