Please use this identifier to cite or link to this item: https://hdl.handle.net/1959.11/1499
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dc.contributor.authorGeiser, Fritzen
dc.contributor.authorMcAllan, Bronwyn Marieen
dc.contributor.authorKenagy, GJen
dc.contributor.authorHiebert, SMen
dc.date.accessioned2009-05-06T13:55:00Z-
dc.date.issued2006-
dc.identifier.citationNaturwissenschaften, 94(4), p. 319-325en
dc.identifier.issn1432-1904en
dc.identifier.issn0028-1042en
dc.identifier.urihttps://hdl.handle.net/1959.11/1499-
dc.description.abstractPhotoperiod and dietary lipids both influence thermal physiology and the pattern of torpor of heterothermic mammals. The aim of the present study was to test the hypothesis that photoperiod-induced physiological changes are linked to differences in tissue fatty acid composition of deer mice, "Peromyscus maniculatus" (~18g body mass). Deer mice were acclimated for >8 weeks to one of three photoperiods (LD, light/dark): LD 8:16 (short photoperiod), LD 12:12 (equinox photoperiod), and LD 16:8 (long photoperiod). Deer mice under short and equinox photoperiods showed a greater occurrence of torpor than those under long photoperiods (71, 70, and 14%, respectively). The duration of torpor bouts was longest in deer mice under short photoperiod (9.3±2.6 h), intermediate under equinox photoperiod (5.1±0.3 h), and shortest under long photoperiod (3.7±0.6 h). Physiological differences in torpor use were associated with significant alterations of fatty acid composition in ~50% of the major fatty acids from leg muscle total lipids, whereas white adipose tissue fatty acid composition showed fewer changes. Our results provide the first evidence that physiological changes due to photoperiod exposure do result in changes in lipid composition in the muscle tissue of deer mice and suggest that these may play a role in survival of low body temperature and metabolic rate during torpor, thus, enhancing favourable energy balance over the course of the winter.en
dc.languageenen
dc.publisherSpringeren
dc.relation.ispartofNaturwissenschaftenen
dc.titlePhotoperiod affects daily torpor and tissue fatty acid composition in deer miceen
dc.typeJournal Articleen
dc.identifier.doi10.1007/s00114-006-0193-zen
dc.subject.keywordsComparative Physiologyen
local.contributor.firstnameFritzen
local.contributor.firstnameBronwyn Marieen
local.contributor.firstnameGJen
local.contributor.firstnameSMen
local.subject.for2008060604 Comparative Physiologyen
local.subject.seo780105 Biological sciencesen
local.profile.schoolSchool of Environmental and Rural Scienceen
local.profile.schoolSchool of Science and Technologyen
local.profile.emailfgeiser@une.edu.auen
local.profile.emailbmcallan@une.edu.auen
local.output.categoryC1en
local.record.placeauen
local.record.institutionUniversity of New Englanden
local.identifier.epublicationsrecordpes:5584en
local.publisher.placeGermanyen
local.format.startpage319en
local.format.endpage325en
local.identifier.scopusid33947373030en
local.peerreviewedYesen
local.identifier.volume94en
local.identifier.issue4en
local.contributor.lastnameGeiseren
local.contributor.lastnameMcAllanen
local.contributor.lastnameKenagyen
local.contributor.lastnameHieberten
dc.identifier.staffune-id:fgeiseren
dc.identifier.staffune-id:bmcallanen
local.profile.orcid0000-0001-7621-5049en
local.profile.roleauthoren
local.profile.roleauthoren
local.profile.roleauthoren
local.profile.roleauthoren
local.identifier.unepublicationidune:1533en
dc.identifier.academiclevelAcademicen
dc.identifier.academiclevelAcademicen
local.title.maintitlePhotoperiod affects daily torpor and tissue fatty acid composition in deer miceen
local.output.categorydescriptionC1 Refereed Article in a Scholarly Journalen
local.search.authorGeiser, Fritzen
local.search.authorMcAllan, Bronwyn Marieen
local.search.authorKenagy, GJen
local.search.authorHiebert, SMen
local.uneassociationUnknownen
local.identifier.wosid000246078600008en
local.year.published2006en
Appears in Collections:Journal Article
School of Environmental and Rural Science
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