| The physiological response of diploid and triploid brook trout to exhaustive exercise. | |
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MedLine Citation:
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PMID: 12507620 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Using triploidy as an experimental model, we examined whether cell size limits the post-exercise recovery process in fish. Because triploids generally possess larger cells, which could affect many physiological and biochemical processes, we hypothesized that triploids would take longer to recover from exhaustive exercise compared to diploids. To test this, we measured plasma lactate, glucose and osmolality, and white muscle energy stores (glycogen, phosphocreatine and ATP) and lactate before and immediately following exhaustive exercise and during recovery at 2 and 4 h post-exercise. In addition, oxygen consumption and ammonia excretion rates were determined before and after exhaustive exercise. Overall, diploid and triploid brook trout showed similar metabolic responses exercise, but plasma osmolality, white muscle lactate, white muscle ATP and post-exercise oxygen consumption rates recovered earlier in triploids compared to diploids. The results of this study suggest that the characteristic larger cell size of triploidy does not limit the physiological response to, or recovery from, exhaustive exercise. |
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Authors:
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C A Hyndman; J D Kieffer; T J Benfey |
Publication Detail:
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Type: 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: 134 ISSN: 1095-6433 ISO Abbreviation: Comp. Biochem. Physiol., Part A Mol. Integr. Physiol. Publication Date: 2003 Jan |
Date Detail:
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Created Date: 2002-12-31 Completed Date: 2003-07-24 Revised Date: 2006-11-15 |
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: 167-79 Citation Subset: IM |
Affiliation:
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Department of Biology and Centre for Coastal Studies and Aquaculture, University of New Brunswick, PO Box 5050, Saint John, N B E2L 4L5, Canada. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adenosine Triphosphate
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metabolism Ammonia / metabolism Animals Blood Glucose / metabolism Cell Size / physiology Diploidy Energy Metabolism / physiology Erythrocytes / cytology, metabolism Glycolysis / physiology Lactic Acid / blood Muscle, Skeletal / metabolism Osmolar Concentration Oxygen Consumption / physiology Physical Endurance / physiology* Polyploidy Trout / genetics, metabolism* Water / metabolism |
| Chemical | |
Reg. No./Substance:
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0/Blood Glucose; 50-21-5/Lactic Acid; 56-65-5/Adenosine Triphosphate; 7664-41-7/Ammonia; 7732-18-5/Water |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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