Does thermal history affect metabolic plasticity?

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dc.contributor.authorRezende, EL
dc.contributor.authorSilva-Durán, I
dc.contributor.authorNovoa, FF
dc.contributor.authorRosenmann, M
dc.date.accessioned2025-01-21T01:30:55Z
dc.date.available2025-01-21T01:30:55Z
dc.date.issued2001
dc.description.abstract(1) The aim of this study was to understand the effects of thermal history in metabolic features such as maximum (MMR) and basal (BMR) metabolic rates, as well as in metabolic plasticity, considered as the total variation of MMR and BMR during the acclimation period, (2) We studied three species of the genus Phyllotis, from different thermal environments, in an altitudinal gradient from sea level to 3800 m.a.s.l. Animals were acclimated to contrasting temperatures of 5 and 30 degreesC. To determine the metabolic flexibility, MMR was measured at intervals of 6 days during the acclimation period, while BMR values were obtained at the end of acclimations. Aerobic scope and the rates of change of MMR were estimated in all populations. (3) High- and low-altitude rodents did not show differences in BMR. However, both upper and lower limits of MMR, as well as aerobic scope, were significantly different between high- and low-altitude species, indicating similar ranges of metabolic plasticity. On the other hand, the rates of change of MMR were similar in all populations. (4) Our results indicate that thermal history has a profound effect on the individuals' thermogenic capacity, probably in both phylogenetic and ontogenetic levels. Low-altitude species could not increase MMR to the same levels as high-altitude species, while the later were unable to decrease MMR to achieve the values of the low-altitude species. (C) 2001 Elsevier Science Ltd. All rights reserved.
dc.fuente.origenWOS
dc.identifier.issn0306-4565
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/96930
dc.identifier.wosidWOS:000167641100004
dc.issue.numero2
dc.language.isoen
dc.pagina.final108
dc.pagina.inicio103
dc.revistaJournal of thermal biology
dc.rightsacceso restringido
dc.subjectmetabolic plasticity
dc.subjectmaximum and basal metabolic rate
dc.subjectaerobic scope
dc.subjectPhyllotis sp.
dc.subjectaltitudinal gradient
dc.subjectthermal environment
dc.subject.ods13 Climate Action
dc.subject.ods15 Life on Land
dc.subject.odspa13 Acción por el clima
dc.subject.odspa15 Vida de ecosistemas terrestres
dc.titleDoes thermal history affect metabolic plasticity?
dc.typeartículo
dc.volumen26
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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