Thermal Energetics and Thermoregulatory Costs of Small Arctic Mammals

1980 ◽  
Vol 61 (2) ◽  
pp. 278-291 ◽  
Author(s):  
M. A. Chappell
Keyword(s):  
Thermal Energetics

Torpor and thermal energetics in a tiny Australian vespertilionid, the little forest bat (Vespadelus vulturnus)

2005 ◽  
Vol 175 (7) ◽  
pp. 479-486 ◽  
Author(s):  
Craig K. R. Willis ◽  
Christopher Turbill ◽  
Fritz Geiser
Keyword(s):  
Thermal Energetics

scholarly journals Marsupials don't adjust their thermal energetics for life in an alpine environment

Temperature ◽  
2016 ◽  
Vol 3 (3) ◽  
pp. 484-498 ◽  
Author(s):  
Christine E. Cooper ◽  
Philip C. Withers ◽  
Andrew Hardie ◽  
Fritz Geiser
Keyword(s):  
Alpine Environment ◽  
Thermal Energetics

Thermal energetics of female big brown bats (Eptesicus fuscus)

2005 ◽  
Vol 83 (6) ◽  
pp. 871-879 ◽  
Author(s):  
Craig K.R Willis ◽  
Jeffrey E Lane ◽  
Eric T Liknes ◽  
David L Swanson ◽  
R Mark Brigham
Keyword(s):  
Metabolic Rate ◽  
Body Mass ◽  
Thermal Conductance ◽  
Eptesicus Fuscus ◽  
Ambient Temperatures ◽  
Big Brown Bats ◽  
A Value ◽  
The Family ◽  
Thermal Energetics ◽  
The Relationship

We investigated thermoregulation and energetics in female big brown bats, Eptesicus fuscus (Beauvois, 1796). We exposed bats to a range of ambient temperatures (Ta) and used open-flow respirometry to record their metabolic responses. The bats were typically thermoconforming and almost always entered torpor at Tas below the lower critical temperature Tlc of 26.7 °C. Basal metabolic rate (BMR, 16.98 ± 2.04 mL O2·h–1, mean body mass = 15.0 ± 1.4 g) and torpid metabolic rate (TMR, 0.460 ± 0.207 mL O2·h–1, mean body mass = 14.7 ± 1.3 g) were similar to values reported for other vespertilionid bats of similar size and similar to a value for E. fuscus BMR calculated from data in a previous paper. However, we found that big brown bats had a lower Tlc and lower thermal conductance at low Ta relative to those measured in the previous study. During torpor, the minimum individual body temperature (Tb) that we recorded was 1.1 °C and the bats began defending minimum Tb at Ta of approximately 0 °C. BMR of big brown bats was 76% of that predicted for bats based on the relationship between BMR and body mass. However, the Vespert ilionidae have been under-represented in previous analyses of the relationship between BMR and body mass in bats. Our data, combined with data for other vespertilionids, suggest that the family may be characterized by a lower BMR than that predicted based on data from other groups of bats.

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