Please use this identifier to cite or link to this item: https://repositorio.inpa.gov.br/handle/1/19178
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dc.contributor.authorVal, Vera Maria Fonseca Almeida e-
dc.contributor.authorVal, Adalberto Luis-
dc.contributor.authorDuncan, Wallice Luiz Paxiuba-
dc.contributor.authorSouza, Fabiana C A-
dc.contributor.authorPaula-Silva, Maria Nazaré N.-
dc.contributor.authorLand, Stephen C.-
dc.date.accessioned2020-06-15T22:06:04Z-
dc.date.available2020-06-15T22:06:04Z-
dc.date.issued2000-
dc.identifier.urihttps://repositorio.inpa.gov.br/handle/1/19178-
dc.description.abstractAstronotus ocellatus is one of the most hypoxia tolerant fish of the Amazon; adult animals can tolerate up to 6 h of anoxia at 28°C. Changes in energy metabolism during growth have been reported in many fish species and may reflect the way organisms deal with environmental constraints. We have analyzed enzyme levels (lactate dehydrogenase, LDH: EC 1.1.1.27; and malate dehydrogenase, MDH: EC 1.1.1.37) in four different tissues (white muscle, heart, liver, and brain) from different-sized animals. Both enzymes correlate with body size, increasing the anaerobic potential positively with growth. To our knowledge, this is the first description of scaling effects on hypoxia tolerance and it is interesting to explore the fact that hypoxia survivorship increases due to combining effects of suppressing metabolic rates and increasing anaerobic power as fish grow. Copyright (C) 2000 Elsevier Science Inc.en
dc.language.isoenpt_BR
dc.relation.ispartofVolume 125, Número 2, Pags. 219-226pt_BR
dc.rightsRestrito*
dc.subjectLactate Dehydrogenaseen
dc.subjectMalate Dehydrogenaseen
dc.subjectAerobic Metabolismen
dc.subjectAnimals Tissueen
dc.subjectControlled Studyen
dc.subjectEnergy Metabolismen
dc.subjectEnzyme Activityen
dc.subjectEnzyme Localizationen
dc.subjectFishen
dc.subjectGlycolysisen
dc.subjectGrowthen
dc.subjectHypoxiaen
dc.subjectMetabolic Rateen
dc.subjectNonhumanen
dc.subjectPriority Journalen
dc.subjectAnimalsiaen
dc.subjectAstronotusen
dc.subjectAstronotus Ocellatusen
dc.subjectAstronotus Ocellatusen
dc.subjectCichlidaeen
dc.subjectPerciformesen
dc.titleScaling effects on hypoxia tolerance in the Amazon fish Astronotus ocellatus (Perciformes: Cichlidae): Contribution of tissue enzyme levelsen
dc.typeArtigopt_BR
dc.identifier.doi10.1016/S0305-0491(99)00172-8-
dc.publisher.journalComparative Biochemistry and Physiology - B Biochemistry and Molecular Biologypt_BR
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