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dc.contributor.authorJesus, Tiago Filipe-
dc.contributor.authorRosa, Inês C.-
dc.contributor.authorRepolho, T.-
dc.contributor.authorLopes, Ana Rita-
dc.contributor.authorPimentel, Marta S.-
dc.contributor.authorVal, Vera Maria Fonseca Almeida e-
dc.contributor.authorCoelho, Maria Manuela-
dc.contributor.authorRosa, Rui-
dc.date.accessioned2020-06-15T21:37:39Z-
dc.date.available2020-06-15T21:37:39Z-
dc.date.issued2018-
dc.identifier.urihttps://repositorio.inpa.gov.br/handle/1/16962-
dc.description.abstractFuture climate change scenarios predict threatening outcomes to biodiversity. Available empirical data concerning biological response of freshwater fish to climate change remains scarce. In this study, we investigated the physiological and biochemical responses of two Iberian freshwater fish species (Squalius carolitertii and the endangered S. torgalensis), inhabiting different climatic conditions, to projected future scenarios of warming (+ 3 °C) and acidification (ΔpH = − 0.4). Herein, metabolic enzyme activities of glycolytic (citrate synthase - CS, lactate dehydrogenase - LDH) and antioxidant (glutathione S-transferase, catalase and superoxide dismutase) pathways, as well as the heat shock response (HSR) and lipid peroxidation were determined. Our results show that, under current water pH, warming causes differential interspecific changes on LDH activity, increasing and decreasing its activity in S. carolitertii and in S. torgalensis, respectively. Furthermore, the synergistic effect of warming and acidification caused an increase in LDH activity of S. torgalensis, comparing with the warming condition. As for CS activity, acidification significantly decreased its activity in S. carolitertii whereas in S. torgalensis no significant effect was observed. These results suggest that S. carolitertii is more vulnerable to climate change, possibly as the result of its evolutionary acclimatization to milder climatic condition, while S. torgalensis evolved in the warmer Mediterranean climate. However, significant changes in HSR were observed under the combined warming and acidification (S. carolitertii) or under acidification (S. torgalensis). Our results underlie the importance of conducting experimental studies and address species endpoint responses under projected climate change scenarios to improve conservation strategies, and to safeguard endangered freshwater fish. © 2017 Elsevier Inc.en
dc.language.isoenpt_BR
dc.relation.ispartofVolume 216, Pags. 34-41pt_BR
dc.rightsRestrito*
dc.subjectCatalaseen
dc.subjectCitrate Synthaseen
dc.subjectFresh Wateren
dc.subjectGlutathione Transferaseen
dc.subjectLactate Dehydrogenaseen
dc.subjectSuperoxide Dismutaseen
dc.subjectAciden
dc.subjectAntioxidanten
dc.subjectEnzymeen
dc.subjectAcidificationen
dc.subjectAnimals Experimenten
dc.subjectAnimals Tissueen
dc.subjectBiochemical Analysisen
dc.subjectClimate Changeen
dc.subjectControlled Studyen
dc.subjectEcophysiologyen
dc.subjectEndangered Speciesen
dc.subjectEnvironmental Protectionen
dc.subjectEnzyme Activityen
dc.subjectEvolutionary Adaptationen
dc.subjectFishen
dc.subjectHeat-shock Responseen
dc.subjectLipid Peroxidationen
dc.subjectMetabolismen
dc.subjectNonhumanen
dc.subjectPhen
dc.subjectSqualius Carolitertiien
dc.subjectSqualius Torgalensisen
dc.subjectWarmingen
dc.subjectAcclimatizationen
dc.subjectAnimalsen
dc.subjectCyprinidaeen
dc.subjectGlycolysisen
dc.subjectHeaten
dc.subjectHeat-shock Responseen
dc.subjectMetabolismen
dc.subjectOxidative Stressen
dc.subjectPhysiologyen
dc.subjectSpecies Differenceen
dc.subjectAcclimatizationen
dc.subjectAcidsen
dc.subjectAnimalen
dc.subjectAntioxidantsen
dc.subjectCyprinidaeen
dc.subjectEnzymesen
dc.subjectFresh Wateren
dc.subjectGlycolysisen
dc.subjectHeat-shock Responseen
dc.subjectHot Temperatureen
dc.subjectHydrogen-ion Concentrationen
dc.subjectLipid Peroxidationen
dc.subjectOxidative Stressen
dc.subjectSpecies Specificityen
dc.titleDifferent ecophysiological responses of freshwater fish to warming and acidificationen
dc.typeArtigopt_BR
dc.identifier.doi10.1016/j.cbpa.2017.11.007-
dc.publisher.journalComparative Biochemistry and Physiology -Part A : Molecular and Integrative Physiologypt_BR
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