The Mean and Variance of Environmental Temperature Interact to Determine Physiological Tolerance and Fitness

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dc.contributor.authorBozinovic, Francisco
dc.contributor.authorBastias, Daniel A.
dc.contributor.authorBoher, Francisca
dc.contributor.authorClavijo Baquet, Sabrina
dc.contributor.authorEstay, Sergio A.
dc.contributor.authorAngilletta, Michael J., Jr.
dc.date.accessioned2024-01-10T14:22:02Z
dc.date.available2024-01-10T14:22:02Z
dc.date.issued2011
dc.description.abstractGlobal climate change poses one of the greatest threats to biodiversity. Most analyses of the potential biological impacts have focused on changes in mean temperature, but changes in thermal variance will also impact organisms and populations. We assessed the combined effects of the mean and variance of temperature on thermal tolerances, organismal survival, and population growth in Drosophila melanogaster. Because the performance of ectotherms relates nonlinearly to temperature, we predicted that responses to thermal variation (+/-0 degrees or +/-5 degrees C) would depend on the mean temperature (17 degrees or 24 degrees C). Consistent with our prediction, thermal variation enhanced the rate of population growth (r(max)) at a low mean temperature but depressed this rate at a high mean temperature. The interactive effect on fitness occurred despite the fact that flies improved their heat and cold tolerances through acclimation to thermal conditions. Flies exposed to a high mean and a high variance of temperature recovered from heat coma faster and survived heat exposure better than did flies that developed at other conditions. Relatively high survival following heat exposure was associated with low survival following cold exposure. Recovery from chill coma was affected primarily by the mean temperature; flies acclimated to a low mean temperature recovered much faster than did flies acclimated to a high mean temperature. To develop more realistic predictions about the biological impacts of climate change, one must consider the interactions between the mean environmental temperature and the variance of environmental temperature.
dc.description.funderFondo Nacional de Areas Prioritarias
dc.description.funderLaboratorio Internacional en Cambio Global
dc.fechaingreso.objetodigital2024-04-26
dc.format.extent10 páginas
dc.fuente.origenWOS
dc.identifier.doi10.1086/662551
dc.identifier.eissn1537-5293
dc.identifier.issn1522-2152
dc.identifier.pubmedidMEDLINE:22030847
dc.identifier.urihttps://doi.org/10.1086/662551
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/79845
dc.identifier.wosidWOS:000297054700002
dc.information.autorucCiencias Biológicas;Bastias D;S/I;156070
dc.information.autorucCiencias Biológicas;Boher F ;S/I;1779
dc.information.autorucCiencias Biológicas;Bozinovic F;S/I;100031
dc.information.autorucCiencias Biológicas;Clavijo S;S/I;181645
dc.information.autorucCiencias Biológicas;Estay S;S/I;158191
dc.issue.numero6
dc.language.isoen
dc.nota.accesocontenido parcial
dc.pagina.final552
dc.pagina.inicio543
dc.publisherUNIV CHICAGO PRESS
dc.revistaPHYSIOLOGICAL AND BIOCHEMICAL ZOOLOGY
dc.rightsacceso restringido
dc.subjectLIFE-HISTORY TRAITS
dc.subjectDROSOPHILA-MELANOGASTER
dc.subjectTHERMAL PHYSIOLOGY
dc.subjectFLUCTUATING TEMPERATURES
dc.subjectCLIMATE-CHANGE
dc.subjectJENSENS INEQUALITY
dc.subjectPOPULATION-GROWTH
dc.subjectVARIABILITY
dc.subjectEVOLUTIONARY
dc.subjectACCLIMATION
dc.subject.ods13 Climate Action
dc.subject.odspa13 Acción por el clima
dc.titleThe Mean and Variance of Environmental Temperature Interact to Determine Physiological Tolerance and Fitness
dc.typeartículo
dc.volumen84
sipa.codpersvinculados156070
sipa.codpersvinculados1779
sipa.codpersvinculados100031
sipa.codpersvinculados181645
sipa.codpersvinculados158191
sipa.indexWOS
sipa.indexScopus
sipa.trazabilidadCarga SIPA;09-01-2024
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