Please use this identifier to cite or link to this item: https://hdl.handle.net/1959.11/16145
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dc.contributor.authorRojas, A Daniellaen
dc.contributor.authorKoertner, Gerharden
dc.contributor.authorGeiser, Fritzen
dc.date.accessioned2014-11-25T15:12:00Z
dc.date.issued2014en
dc.identifier.citationNaturwissenschaften, 101(2), p. 105-114en
dc.identifier.issn1432-1904en
dc.identifier.issn0028-1042en
dc.identifier.urihttps://hdl.handle.net/1959.11/16145en
dc.description.abstractAntechinus are small, insectivorous, heterothermic marsupial mammals that use torpor from late summer to early winter and reproduce once a year in late winter/early spring. Males die after mating, most females produce only a single litter, but some survive a second winter and produce another litter. As it is not known how these females manage to survive the second winter after the energetically demanding reproductive period and then reproduce a second time, we aimed to provide the first data on thermal biology of free-ranging antechinus by using temperature telemetry. Male 'Antechinus stuartii' and 'Antechinus flavipes' rarely entered torpor in autumn/early winter in the wild, expressing only shallow bouts of <2 h. Female 'A. stuartii' used torpor extensively, employing bouts up to 16.7 h with body temperatures as low as 17.8 °C. Interestingly, although first and second year females used similar torpor patterns, torpor occurrence was almost twofold in second year (93 % of days) than first year females (49 %), and the proportion of the overall monitoring period animals spent torpid was 3.2-fold longer in the former with a corresponding shorter activity period. Our study suggests that intensive use of torpor is crucial for second year females for autumn and winter survival and production of a second litter. We provide the first evidence of an age-related pattern in daily torpor expression in free-ranging mammals and show that torpor use is a complex process that is affected not only by the current energy availability and thermal conditions but also by the reproductive history and age of individuals.en
dc.languageenen
dc.publisherSpringeren
dc.relation.ispartofNaturwissenschaftenen
dc.titleTorpor in free-ranging antechinus: does it increase fitness?en
dc.typeJournal Articleen
dc.identifier.doi10.1007/s00114-013-1136-0en
dc.subject.keywordsAnimal Physiological Ecologyen
dc.subject.keywordsTerrestrial Ecologyen
local.contributor.firstnameA Daniellaen
local.contributor.firstnameGerharden
local.contributor.firstnameFritzen
local.subject.for2008060208 Terrestrial Ecologyen
local.subject.for2008060806 Animal Physiological Ecologyen
local.subject.seo2008970106 Expanding Knowledge in the Biological Sciencesen
local.profile.schoolEnvironmental and Rural Scienceen
local.profile.schoolSchool of Environmental and Rural Scienceen
local.profile.schoolSchool of Environmental and Rural Scienceen
local.profile.emailarojas2@une.edu.auen
local.profile.emailgkoertne@une.edu.auen
local.profile.emailfgeiser@une.edu.auen
local.output.categoryC1en
local.record.placeauen
local.record.institutionUniversity of New Englanden
local.identifier.epublicationsrecordune-20141119-135115en
local.publisher.placeBerlin, Germanyen
local.format.startpage105en
local.format.endpage114en
local.peerreviewedYesen
local.identifier.volume101en
local.identifier.issue2en
local.title.subtitledoes it increase fitness?en
local.contributor.lastnameRojasen
local.contributor.lastnameKoertneren
local.contributor.lastnameGeiseren
dc.identifier.staffune-id:arojas2en
dc.identifier.staffune-id:gkoertneen
dc.identifier.staffune-id:fgeiseren
local.profile.orcid0000-0001-8230-0709en
local.profile.orcid0000-0001-7621-5049en
local.profile.roleauthoren
local.profile.roleauthoren
local.profile.roleauthoren
local.identifier.unepublicationidune:16382en
local.identifier.handlehttps://hdl.handle.net/1959.11/16145en
dc.identifier.academiclevelAcademicen
dc.identifier.academiclevelAcademicen
dc.identifier.academiclevelAcademicen
local.title.maintitleTorpor in free-ranging antechinusen
local.output.categorydescriptionC1 Refereed Article in a Scholarly Journalen
local.description.statisticsepubsVisitors: 327<br />Views: 372<br />Downloads: 1en
local.search.authorRojas, A Daniellaen
local.search.authorKoertner, Gerharden
local.search.authorGeiser, Fritzen
Appears in Collections:Journal Article
School of Environmental and Rural Science
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