Please use this identifier to cite or link to this item: https://hdl.handle.net/1959.11/20045
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dc.contributor.authorNowack, Juliaen
dc.contributor.authorGeiser, Fritzen
dc.date.accessioned2017-02-20T13:40:00Z
dc.date.issued2016en
dc.identifier.citationThe Journal of Experimental Biology, 219(4), p. 590-596en
dc.identifier.issn1477-9145en
dc.identifier.issn0022-0949en
dc.identifier.urihttps://hdl.handle.net/1959.11/20045en
dc.description.abstractHuddling and torpor are widely used for minimizing heat loss by mammals. Despite the questionable energetic benefits from social heterothermy of mixed groups of warm normothermic and cold torpid individuals, the heterothermic Australian sugar glider ('Petaurus breviceps') rests in such groups during the cold season. To unravel why they might do so, we examined torpor expression of two sugar glider groups of four individuals each in outside enclosures during winter. We observed 79 torpor bouts during 50 days of observation and found that torpor bouts were longer and deeper when all individuals of a group entered torpor together, and therefore infer that they would have saved more energy in comparison to short and shallow solitary torpor bouts. However, all gliders of either group only expressed torpor uniformly in response to food restriction, whereas on most occasions at least one individual per group remained normothermic. Nevertheless, the presence of warm gliders in mixed groups also appears to be of energetic advantage for torpid individuals, because nest box temperature was negatively correlated with the number of torpid gliders, and normothermic individuals kept the nest temperature at a value closer to the threshold for thermoregulatory heat production during torpor. Our study suggests that mixed groups of torpid and normothermic individuals are observed when environmental conditions are adverse but food is available, leading to intermediate energy savings from torpor. However, under especially challenging conditions and when animals are starving, energy savings are maximized by uniform and pronounced expression of torpor.en
dc.languageenen
dc.publisherThe Company of Biologists Ltden
dc.relation.ispartofThe Journal of Experimental Biologyen
dc.titleFriends with benefits: the role of huddling in mixed groups of torpid and normothermic animalsen
dc.typeJournal Articleen
dc.identifier.doi10.1242/jeb.128926en
dcterms.accessRightsGolden
dc.subject.keywordsZoologyen
dc.subject.keywordsAnimal Physiological Ecologyen
local.contributor.firstnameJuliaen
local.contributor.firstnameFritzen
local.subject.for2008060806 Animal Physiological Ecologyen
local.subject.for2008060899 Zoology not elsewhere classifieden
local.subject.seo2008970106 Expanding Knowledge in the Biological Sciencesen
local.profile.schoolSchool of Environmental and Rural Scienceen
local.profile.schoolSchool of Environmental and Rural Scienceen
local.profile.emailjnowack@une.edu.auen
local.profile.emailfgeiser@une.edu.auen
local.output.categoryC1en
local.record.placeauen
local.record.institutionUniversity of New Englanden
local.identifier.epublicationsrecordune-20161110-125940en
local.publisher.placeUnited Kingdomen
local.format.startpage590en
local.format.endpage596en
local.peerreviewedYesen
local.identifier.volume219en
local.identifier.issue4en
local.title.subtitlethe role of huddling in mixed groups of torpid and normothermic animalsen
local.access.fulltextYesen
local.contributor.lastnameNowacken
local.contributor.lastnameGeiseren
dc.identifier.staffune-id:jnowacken
dc.identifier.staffune-id:fgeiseren
local.profile.orcid0000-0001-7621-5049en
local.profile.roleauthoren
local.profile.roleauthoren
local.identifier.unepublicationidune:20243en
dc.identifier.academiclevelAcademicen
dc.identifier.academiclevelAcademicen
local.title.maintitleFriends with benefitsen
local.output.categorydescriptionC1 Refereed Article in a Scholarly Journalen
local.description.statisticsepubsVisitors: 26<br />Views: 29<br />Downloads: 0en
local.search.authorNowack, Juliaen
local.search.authorGeiser, Fritzen
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