| Mode of locomotion places selective pressures on Antarctic and temperate labriform swimming fish. | |
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MedLine Citation:
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PMID: 15313495 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The physiological responses to exercise and stress of the Antarctic labriform swimmer Pagothenia borchgrevinki were compared to the temperate labriform swimmers Notolabrus celidotus and Notolabrus fucicola. Basic swimming characteristics were very similar amongst the three species with P. borchgrevinki showing a reduced capacity for exercise. P. borchgrevinki showed large increases in haematocrit (Hct) following exercise that were not seen in the temperate species. Lactate dehydrogenase (LDH) activities were high in the white myotomal muscle from the Antarctic fish, with a distinct indication of metabolic cold adaptation in this enzyme. Nevertheless, although the temperate fish showed elevated muscle lactate concentrations following either exercise or electrical stimulation the Antarctic fish did not. The data suggest that poor anaerobic performance of white muscle is associated with the labriform mode of locomotion. |
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Authors:
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Nicholas Tuckey; William Davison |
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Publication Detail:
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Type: Comparative Study; Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Comparative biochemistry and physiology. Part A, Molecular & integrative physiology Volume: 138 ISSN: 1095-6433 ISO Abbreviation: Comp. Biochem. Physiol., Part A Mol. Integr. Physiol. Publication Date: 2004 Jul |
Date Detail:
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Created Date: 2004-08-17 Completed Date: 2005-07-22 Revised Date: 2008-11-21 |
Medline Journal Info:
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Nlm Unique ID: 9806096 Medline TA: Comp Biochem Physiol A Mol Integr Physiol Country: United States |
Other Details:
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Languages: eng Pagination: 391-8 Citation Subset: IM |
Affiliation:
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School of Biological Sciences, University of Canterbury, Private Bag 4800, Christchurch 8001, New Zealand. Nicholas.tuckey@paradise.net.nz |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Animals Antarctic Regions Cold Temperature* Epinephrine / blood Hematocrit L-Lactate Dehydrogenase / analysis, metabolism Lactic Acid / metabolism Muscles / enzymology, metabolism Norepinephrine / blood Perciformes / physiology* Physical Conditioning, Animal* Stress, Physiological / metabolism Swimming / physiology* |
| Chemical | |
Reg. No./Substance:
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50-21-5/Lactic Acid; 51-41-2/Norepinephrine; 51-43-4/Epinephrine; EC 1.1.1.27/L-Lactate Dehydrogenase |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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