Linked Life Data

19710051

Source:http://linkedlifedata.com/resource/pubmed/id/19710051

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
2010-1-13
pubmed:abstractText
Many animal species employ natural hypothermia in seasonal (hibernation) and daily (torpor) strategies to save energy. Facultative daily torpor is a typical response to fluctuations in food availability, but the relationship between environmental quality, foraging behaviour and torpor responses is poorly understood. We studied body temperature responses of outbred ICR (CD-1) mice exposed to different food reward schedules, simulating variation in habitat quality. Our main comparison was between female mice exposed to low foraging-cost environments and high-cost environments. As controls, we pair-fed a group of inactive animals (no-cost treatment) the same amount of pellets as high-cost animals. Mice faced with high foraging costs were more likely to employ torpor than mice exposed to low foraging costs, or no-cost controls (100% versus 40% and 33% of animals, respectively). While resting-phase temperature showed a non-significant decrease in high-cost animals, torpor was not associated with depressions in active-phase body temperature. These results demonstrate (i) that mice show daily torpor in response to poor foraging conditions; (ii) that torpor incidence is not attributable to food restriction alone; and (iii) that high levels of nocturnal activity do not preclude the use of daily torpor as an energy-saving strategy. The finding that daily torpor is not restricted to conditions of severe starvation puts torpor in mice in a more fundamental ecological context.
pubmed:commentsCorrections
http://linkedlifedata.com/resource/pubmed/commentcorrection/19710051-10192180, http://linkedlifedata.com/resource/pubmed/commentcorrection/19710051-11522441, http://linkedlifedata.com/resource/pubmed/commentcorrection/19710051-14506303, http://linkedlifedata.com/resource/pubmed/commentcorrection/19710051-1494028, http://linkedlifedata.com/resource/pubmed/commentcorrection/19710051-14977403, http://linkedlifedata.com/resource/pubmed/commentcorrection/19710051-15845845, http://linkedlifedata.com/resource/pubmed/commentcorrection/19710051-17241268, http://linkedlifedata.com/resource/pubmed/commentcorrection/19710051-17515427, http://linkedlifedata.com/resource/pubmed/commentcorrection/19710051-18587115, http://linkedlifedata.com/resource/pubmed/commentcorrection/19710051-5071962, http://linkedlifedata.com/resource/pubmed/commentcorrection/19710051-6640030
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:month
Feb
pubmed:issn
1744-957X
pubmed:author
pubmed:issnType
Electronic
pubmed:day
23
pubmed:volume
6
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
132-5
pubmed:dateRevised
2011-7-25
pubmed:meshHeading
pubmed:year
2010
pubmed:articleTitle
Daily torpor in mice: high foraging costs trigger energy-saving hypothermia.
pubmed:affiliation
Department of Behavioural Biology, Centre for Behaviour and Neurosciences, University of Groningen, , PO Box 14, 9750 Haren, The Netherlands. k.a.schubert@rug.nl
pubmed:publicationType
Journal Article, Comparative Study, Research Support, Non-U.S. Gov't