Document Detail

Low temperature cardiac response to exhaustive exercise in fish with different levels of winter quiescence.
MedLine Citation:
PMID:  12507619     Owner:  NLM     Status:  MEDLINE    
We examined the cardiac responses of different fish species to anaerobic exercise at low temperatures (3 degrees C). Three species of sympatric warmwater fish with perceived differences in winter activity were used for this comparative study: the winter-quiescent largemouth bass (Micropterus salmoides); the winter-active white bass (Morone chrysops); and the intermediately winter-active black crappie (Pomoxis nigromaculatus). Perceived differences in winter activity were reflected in cardiac responses; e.g. basal cardiac values were lowest for largemouth bass, highest for white bass, and intermediate for black crappie. In addition, cardiac recovery was most rapid for white bass, slowest for largemouth bass and intermediate for black crappie. When disturbed at low temperatures, largemouth bass and black crappie elevated cardiac output principally through increases in heart rate despite substantial decreases in stroke volume. Conversely, white bass principally used stroke volume modulation to change cardiac output. The results of this study indicate that different species respond differently to exercise at low temperatures. Management strategies should recognize that such variation exists and ensure that management decisions are based upon an understanding of the low temperature exercise physiology and winter biology of the species of interest.
Steven J Cooke; Emily C Grant; Jason F Schreer; David P Philipp; Arthur L Devries
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Comparative biochemistry and physiology. Part A, Molecular & integrative physiology     Volume:  134     ISSN:  1095-6433     ISO Abbreviation:  Comp. Biochem. Physiol., Part A Mol. Integr. Physiol.     Publication Date:  2003 Jan 
Date Detail:
Created Date:  2002-12-31     Completed Date:  2003-07-24     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  9806096     Medline TA:  Comp Biochem Physiol A Mol Integr Physiol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  157-65     Citation Subset:  IM    
Department of Natural Resources and Environmental Sciences, University of Illinois, Illinois Natural History Survey, 607 E Peabody Drive, Champaign, IL 61820 USA.
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MeSH Terms
Bass / physiology*
Cold Temperature
Heart Rate / physiology
Physical Endurance / physiology*
Species Specificity
Stroke Volume / physiology*

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

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