Document Detail

A preliminary study on the seasonal body temperature rhythms of the captive mountain hare (Lepus timidus).
MedLine Citation:
PMID:  18329637     Owner:  NLM     Status:  MEDLINE    
The mountain hare (Lepus timidus) is a year-round active herbivore adapted to survive the boreal winter. Captive mountain hares (N=4) were implanted with intraabdominal thermosensitive loggers to record their core body temperature (T(b)) for a year and during food deprivation (8-48h) in summer and winter. The average T(b) was 38.7+/-0.01 degrees C in summer and 38.3+/-0.01 degrees C in winter. The yearly T(b) correlated positively with the ambient temperature. The 24-h T(b) was the highest from late scotophase to early photophase in summer and winter and the lowest during middle-late photophase in summer or during early-middle scotophase in winter. The range of the 24-h oscillations in T(b) increased in three animals in winter. Food deprivation did not induce hypothermia in summer or winter. These preliminary data suggest that the mountain hare can spare a modest amount of energy with the wintertime reduction in T(b).
Petteri Nieminen; Anne-Mari Mustonen
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2008-02-06
Journal Detail:
Title:  Cryobiology     Volume:  56     ISSN:  1090-2392     ISO Abbreviation:  Cryobiology     Publication Date:  2008 Apr 
Date Detail:
Created Date:  2008-03-26     Completed Date:  2008-04-18     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0006252     Medline TA:  Cryobiology     Country:  United States    
Other Details:
Languages:  eng     Pagination:  163-7     Citation Subset:  IM    
University of Joensuu, Faculty of Biosciences, P.O. Box 111, FI-80101 Joensuu, Finland.
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MeSH Terms
Body Temperature Regulation / physiology*
Food Deprivation
Hares / physiology*
Hypothermia / etiology

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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