Thermal acclimation, maximum metabolic rate, and nonshivering thermogenesis of <i>Phyllotis xanthopygus</i> (rodentia) in the Andes mountains

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dc.contributor.authorNespolo, RF
dc.contributor.authorOpazo, JC
dc.contributor.authorRosenmann, M
dc.contributor.authorBozinovic, F
dc.date.accessioned2025-01-21T01:31:58Z
dc.date.available2025-01-21T01:31:58Z
dc.date.issued1999
dc.description.abstractWe determined non-shivering thermogensis (NST) and maximum metabolic rate (MMR) as functions of thermal acclimation in a small mammal species in a seasonal environment. We studied the rodent Phyllotis xanthopygus (Muridae) living in the cool to cold climate of the high Andean Plateau of northern Chile. As expected, NST and MMR were constantly higher in cool-acclimated individuals. Nevertheless, the observed differences in shivering thermogenesis (ST) as a result of temperature acclimation (>200%) exceeded our expectations. The large contributions of ST was due to a 94% increase in MMR while a 49% of increased in NST Thus, changes in ST in P. xanthopygus account for most of the metabolic plasticity and thermogenic capability that enables this species to cope with thermal variations in the Andean environment.
dc.fuente.origenWOS
dc.identifier.issn0022-2372
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/97177
dc.identifier.wosidWOS:000082444800004
dc.issue.numero3
dc.language.isoen
dc.pagina.final748
dc.pagina.inicio742
dc.revistaJournal of mammalogy
dc.rightsacceso restringido
dc.subjectPhyllotis xanthopygus
dc.subjectthermoregulation
dc.subjectoxygen consumption
dc.subjectAndean rodent
dc.subjectnon-shivering thermogenesis
dc.subject.ods15 Life on Land
dc.subject.ods13 Climate Action
dc.subject.odspa15 Vida de ecosistemas terrestres
dc.subject.odspa13 Acción por el clima
dc.titleThermal acclimation, maximum metabolic rate, and nonshivering thermogenesis of <i>Phyllotis xanthopygus</i> (rodentia) in the Andes mountains
dc.typeartículo
dc.volumen80
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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