Document Detail

Heat increment of feeding in Steller sea lions, Eumetopias jubatus.
MedLine Citation:
PMID:  9406451     Owner:  NLM     Status:  MEDLINE    
The heat increment of feeding (HIF) was measured in six captive, juvenile Steller sea lions (Eumetopias jubatus), fed meals of either 2 or 4 kg of herring. HIF was calculated as the post-prandial increase in metabolism above baseline levels, and was measured using open-circuit (gas) respirometry. It averaged 12.4 +/- 0.9% (SE) of ingested energy intake for the 4-kg meal trials, and 9.9 +/- 0.9% for the 2-kg meal size. The effect lasted 8-10 hr for the larger meal size. Metabolism peaked 3.7 hr after feeding, and was 2.13 times higher than baseline levels. For the 2-kg meal size, the effect lasted 6-8 hr, with metabolism peaking 2.8 hr after ingestion at 1.76 times baseline levels. Our estimates of HIF for Steller sea lions are at the lower end of estimates for terrestrial mammals, and are consistent with estimates for other marine mammals.
D A Rosen; A W Trites
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Comparative biochemistry and physiology. Part A, Physiology     Volume:  118     ISSN:  1096-4940     ISO Abbreviation:  Comp. Biochem. Physiol. A Physiol.     Publication Date:  1997 Nov 
Date Detail:
Created Date:  1998-02-18     Completed Date:  1998-02-18     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  9516062     Medline TA:  Comp Biochem Physiol A Physiol     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  877-81     Citation Subset:  IM    
Marine Mammal Research Unit, University of British Columbia, Vancouver, Canada.
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MeSH Terms
Body Temperature Regulation / physiology*
Eating / physiology*
Energy Intake
Energy Metabolism
Oxygen Consumption
Sea Lions / physiology*

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