Fish biomarker responses to perturbation by drought in streams

dc.contributor.authorOndei, Luciana de Souza [UNESP]
dc.contributor.authorTeresa, Fabricio Barreto
dc.contributor.authorGarcia, Danielly Pereira [UNESP]
dc.contributor.authorFelicio, Andreia Arantes [UNESP]
dc.contributor.authorHumberto da Silva, Danilo Grunig [UNESP]
dc.contributor.authorAlmeida, Eduardo Alves de [UNESP]
dc.contributor.institutionUniv Estadual Goias
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionFundacao Univ Reg Blumenau
dc.description.abstractDrought 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 stress. In the liver, MDA values were higher in the dry season for both intermittent and perennial streams, suggesting a generalized seasonal response. As expected, some antioxidant response enzymes changed in the intermittent sites during the dry season. Therefore, oxidative stress biomarkers vary seasonally, with greater increase in intermittent sites. These evidences contribute for the understanding of the spatio-temporal variation of the fish responses and fish resistance to perturbations by drought in tropical environments.en
dc.description.affiliationUniv Estadual Goias, Campus Cent, BR-75132903 Anapolis, Go, Brazil
dc.description.affiliationUniv Estadual Paulista, Inst Biociencias Letras & Ciencias Exatas, BR-15054000 Sao Pose Do Rio Preto, SP, Brazil
dc.description.affiliationFundacao Univ Reg Blumenau, FURB, Dept Ciencias Nat, BR-89010971 Blumenau, SC, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, Inst Biociencias Letras & Ciencias Exatas, BR-15054000 Sao Pose Do Rio Preto, SP, Brazil
dc.description.sponsorshipFundacao de Amparo a Pesquisa do Estado de Goias -FAPEG
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipIdFundacao de Amparo a Pesquisa do Estado de Goias -FAPEG: 201210267001078
dc.description.sponsorshipIdCAPES: AUXPE: 2036/2013
dc.description.sponsorshipIdCNPq: 306912/2018-0
dc.description.sponsorshipIdCNPq: 307603/2014-8
dc.identifier.citationNeotropical Ichthyology. Sao Paulo: Soc Brasileira Ictiologia, v. 18, n. 2, 15 p., 2020.
dc.publisherSoc Brasileira Ictiologia
dc.relation.ispartofNeotropical Ichthyology
dc.rights.accessRightsAcesso aberto
dc.sourceWeb of Science
dc.subjectAstyanax elachylepis
dc.subjectAntioxidant response
dc.subjectBrazilian savanna
dc.subjectPreparation for oxidative stress (POS)
dc.subjectSeasonal variation
dc.titleFish biomarker responses to perturbation by drought in streamsen
dcterms.rightsHolderSoc Brasileira Ictiologia[6]


Pacote Original
Agora exibindo 1 - 1 de 1
Imagem de Miniatura
716.79 KB
Adobe Portable Document Format