Juvenile sturgeon exhibit reduced physiological responses to exercise.
Identifieur interne : 000045 ( Ncbi/Merge ); précédent : 000044; suivant : 000046Juvenile sturgeon exhibit reduced physiological responses to exercise.
Auteurs : J D Kieffer [Canada] ; A M Wakefield ; M K LitvakSource :
- The Journal of experimental biology [ 0022-0949 ] ; 2001.
English descriptors
- KwdEn :
- Ammonia (metabolism), Animals, Blood, Energy Metabolism, Fishes (physiology), Glucose (metabolism), Kinetics, Lactic Acid (blood), Lactic Acid (metabolism), Muscle, Skeletal (metabolism), Osmolar Concentration, Oxygen Consumption, Phosphocreatine (metabolism), Physical Exertion (physiology), Pyruvic Acid (metabolism).
- MESH :
- chemical , blood : Lactic Acid.
- chemical , metabolism : Ammonia, Glucose, Lactic Acid, Phosphocreatine, Pyruvic Acid.
- metabolism : Muscle, Skeletal.
- physiology : Fishes, Physical Exertion.
- Animals, Blood, Energy Metabolism, Kinetics, Osmolar Concentration, Oxygen Consumption.
Abstract
Experiments were conducted to determine the physiological responses to exercise of Atlantic sturgeon (Acipenser oxyrhynchus) and shortnose sturgeon (A. brevirostrum). We measured the rates of oxygen consumption and ammonia excretion in both species and a variety of physiological parameters in both muscle (e.g. lactate, glycogen, pyruvate, glucose and phosphocreatine concentrations) and blood (e.g. osmolality and lactate concentration) in juvenile shortnose sturgeon following 5 min of exhaustive exercise. In both species, oxygen consumption and ammonia excretion rates increased approximately twofold following exhaustive exercise. Post-exercise oxygen consumption rates decreased to control levels within 30 min in both sturgeon species, but post-exercise ammonia excretion rates remained high in Atlantic sturgeon throughout the 4 h experiment. Resting muscle energy metabolite levels in shortnose sturgeon were similar to those of other fish species, but the levels decreased only slightly following the exercise period and recovery occurred within an hour. Under resting conditions, muscle lactate levels were low (<1 micromol g(-1)) but they increased to approximately 6 micromol g(-1) after exercise, returning to control levels within 6 h. Unlike similarly stressed teleost fish, such as the rainbow trout, plasma lactate levels did not increase substantially and returned to resting levels within 2 h. Plasma osmolality was not significantly affected by exercise in shortnose sturgeon. Taken together, these results suggest that shortnose and Atlantic sturgeon do not exhibit the physiological responses to exhaustive exercise typical of other fish species. They may possess behavioural or endocrinological mechanisms that differ from those of other fishes and that lead to a reduced ability to respond physiologically to exhaustive exercise.
PubMed: 11815652
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<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">Juvenile sturgeon exhibit reduced physiological responses to exercise.</title><author><name sortKey="Kieffer, J D" sort="Kieffer, J D" uniqKey="Kieffer J" first="J D" last="Kieffer">J D Kieffer</name><affiliation wicri:level="1"><nlm:affiliation>Department of Biology and Centre for Coastal Studies and Aquaculture, University of New Brunswick, PO Box 5050, Saint John, New Brunswick, Canada E2L 4L5. jkieffer@unbsj.ca</nlm:affiliation><country>Canada</country><wicri:regionArea>Department of Biology and Centre for Coastal Studies and Aquaculture, University of New Brunswick, PO Box 5050, Saint John, New Brunswick</wicri:regionArea><wicri:noRegion>New Brunswick</wicri:noRegion></affiliation></author><author><name sortKey="Wakefield, A M" sort="Wakefield, A M" uniqKey="Wakefield A" first="A M" last="Wakefield">A M Wakefield</name></author><author><name sortKey="Litvak, M K" sort="Litvak, M K" uniqKey="Litvak M" first="M K" last="Litvak">M K Litvak</name></author></titleStmt><publicationStmt><idno type="wicri:source">PubMed</idno><date when="2001">2001</date><idno type="RBID">pubmed:11815652</idno><idno type="pmid">11815652</idno><idno type="wicri:Area/PubMed/Corpus">000620</idno><idno type="wicri:explorRef" wicri:stream="PubMed" wicri:step="Corpus" wicri:corpus="PubMed">000620</idno><idno type="wicri:Area/PubMed/Curation">000620</idno><idno type="wicri:explorRef" wicri:stream="PubMed" wicri:step="Curation">000620</idno><idno type="wicri:Area/PubMed/Checkpoint">000620</idno><idno type="wicri:explorRef" wicri:stream="Checkpoint" wicri:step="PubMed">000620</idno><idno type="wicri:Area/Ncbi/Merge">000045</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en">Juvenile sturgeon exhibit reduced physiological responses to exercise.</title><author><name sortKey="Kieffer, J D" sort="Kieffer, J D" uniqKey="Kieffer J" first="J D" last="Kieffer">J D Kieffer</name><affiliation wicri:level="1"><nlm:affiliation>Department of Biology and Centre for Coastal Studies and Aquaculture, University of New Brunswick, PO Box 5050, Saint John, New Brunswick, Canada E2L 4L5. jkieffer@unbsj.ca</nlm:affiliation><country>Canada</country><wicri:regionArea>Department of Biology and Centre for Coastal Studies and Aquaculture, University of New Brunswick, PO Box 5050, Saint John, New Brunswick</wicri:regionArea><wicri:noRegion>New Brunswick</wicri:noRegion></affiliation></author><author><name sortKey="Wakefield, A M" sort="Wakefield, A M" uniqKey="Wakefield A" first="A M" last="Wakefield">A M Wakefield</name></author><author><name sortKey="Litvak, M K" sort="Litvak, M K" uniqKey="Litvak M" first="M K" last="Litvak">M K Litvak</name></author></analytic><series><title level="j">The Journal of experimental biology</title><idno type="ISSN">0022-0949</idno><imprint><date when="2001" type="published">2001</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Ammonia (metabolism)</term><term>Animals</term><term>Blood</term><term>Energy Metabolism</term><term>Fishes (physiology)</term><term>Glucose (metabolism)</term><term>Kinetics</term><term>Lactic Acid (blood)</term><term>Lactic Acid (metabolism)</term><term>Muscle, Skeletal (metabolism)</term><term>Osmolar Concentration</term><term>Oxygen Consumption</term><term>Phosphocreatine (metabolism)</term><term>Physical Exertion (physiology)</term><term>Pyruvic Acid (metabolism)</term></keywords><keywords scheme="MESH" type="chemical" qualifier="blood" xml:lang="en"><term>Lactic Acid</term></keywords><keywords scheme="MESH" type="chemical" qualifier="metabolism" xml:lang="en"><term>Ammonia</term><term>Glucose</term><term>Lactic Acid</term><term>Phosphocreatine</term><term>Pyruvic Acid</term></keywords><keywords scheme="MESH" qualifier="metabolism" xml:lang="en"><term>Muscle, Skeletal</term></keywords><keywords scheme="MESH" qualifier="physiology" xml:lang="en"><term>Fishes</term><term>Physical Exertion</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Animals</term><term>Blood</term><term>Energy Metabolism</term><term>Kinetics</term><term>Osmolar Concentration</term><term>Oxygen Consumption</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Experiments were conducted to determine the physiological responses to exercise of Atlantic sturgeon (Acipenser oxyrhynchus) and shortnose sturgeon (A. brevirostrum). We measured the rates of oxygen consumption and ammonia excretion in both species and a variety of physiological parameters in both muscle (e.g. lactate, glycogen, pyruvate, glucose and phosphocreatine concentrations) and blood (e.g. osmolality and lactate concentration) in juvenile shortnose sturgeon following 5 min of exhaustive exercise. In both species, oxygen consumption and ammonia excretion rates increased approximately twofold following exhaustive exercise. Post-exercise oxygen consumption rates decreased to control levels within 30 min in both sturgeon species, but post-exercise ammonia excretion rates remained high in Atlantic sturgeon throughout the 4 h experiment. Resting muscle energy metabolite levels in shortnose sturgeon were similar to those of other fish species, but the levels decreased only slightly following the exercise period and recovery occurred within an hour. Under resting conditions, muscle lactate levels were low (<1 micromol g(-1)) but they increased to approximately 6 micromol g(-1) after exercise, returning to control levels within 6 h. Unlike similarly stressed teleost fish, such as the rainbow trout, plasma lactate levels did not increase substantially and returned to resting levels within 2 h. Plasma osmolality was not significantly affected by exercise in shortnose sturgeon. Taken together, these results suggest that shortnose and Atlantic sturgeon do not exhibit the physiological responses to exhaustive exercise typical of other fish species. They may possess behavioural or endocrinological mechanisms that differ from those of other fishes and that lead to a reduced ability to respond physiologically to exhaustive exercise.</div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">11815652</PMID><DateCreated><Year>2002</Year><Month>01</Month><Day>29</Day></DateCreated><DateCompleted><Year>2002</Year><Month>04</Month><Day>04</Day></DateCompleted><DateRevised><Year>2013</Year><Month>11</Month><Day>21</Day></DateRevised><Article PubModel="Print"><Journal><ISSN IssnType="Print">0022-0949</ISSN><JournalIssue CitedMedium="Print"><Volume>204</Volume><Issue>Pt 24</Issue><PubDate><Year>2001</Year><Month>Dec</Month></PubDate></JournalIssue><Title>The Journal of experimental biology</Title><ISOAbbreviation>J. Exp. Biol.</ISOAbbreviation></Journal><ArticleTitle>Juvenile sturgeon exhibit reduced physiological responses to exercise.</ArticleTitle><Pagination><MedlinePgn>4281-9</MedlinePgn></Pagination><Abstract><AbstractText>Experiments were conducted to determine the physiological responses to exercise of Atlantic sturgeon (Acipenser oxyrhynchus) and shortnose sturgeon (A. brevirostrum). We measured the rates of oxygen consumption and ammonia excretion in both species and a variety of physiological parameters in both muscle (e.g. lactate, glycogen, pyruvate, glucose and phosphocreatine concentrations) and blood (e.g. osmolality and lactate concentration) in juvenile shortnose sturgeon following 5 min of exhaustive exercise. In both species, oxygen consumption and ammonia excretion rates increased approximately twofold following exhaustive exercise. Post-exercise oxygen consumption rates decreased to control levels within 30 min in both sturgeon species, but post-exercise ammonia excretion rates remained high in Atlantic sturgeon throughout the 4 h experiment. Resting muscle energy metabolite levels in shortnose sturgeon were similar to those of other fish species, but the levels decreased only slightly following the exercise period and recovery occurred within an hour. Under resting conditions, muscle lactate levels were low (<1 micromol g(-1)) but they increased to approximately 6 micromol g(-1) after exercise, returning to control levels within 6 h. Unlike similarly stressed teleost fish, such as the rainbow trout, plasma lactate levels did not increase substantially and returned to resting levels within 2 h. Plasma osmolality was not significantly affected by exercise in shortnose sturgeon. Taken together, these results suggest that shortnose and Atlantic sturgeon do not exhibit the physiological responses to exhaustive exercise typical of other fish species. They may possess behavioural or endocrinological mechanisms that differ from those of other fishes and that lead to a reduced ability to respond physiologically to exhaustive exercise.</AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Kieffer</LastName><ForeName>J D</ForeName><Initials>JD</Initials><AffiliationInfo><Affiliation>Department of Biology and Centre for Coastal Studies and Aquaculture, University of New Brunswick, PO Box 5050, Saint John, New Brunswick, Canada E2L 4L5. jkieffer@unbsj.ca</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Wakefield</LastName><ForeName>A M</ForeName><Initials>AM</Initials></Author><Author ValidYN="Y"><LastName>Litvak</LastName><ForeName>M K</ForeName><Initials>MK</Initials></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType><PublicationType UI="D013485">Research Support, Non-U.S. 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MajorTopicYN="N">blood</QualifierName><QualifierName UI="Q000378" MajorTopicYN="N">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D018482" MajorTopicYN="N">Muscle, Skeletal</DescriptorName><QualifierName UI="Q000378" MajorTopicYN="N">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D009994" MajorTopicYN="N">Osmolar Concentration</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D010101" MajorTopicYN="N">Oxygen Consumption</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D010725" MajorTopicYN="N">Phosphocreatine</DescriptorName><QualifierName UI="Q000378" MajorTopicYN="N">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D005082" MajorTopicYN="N">Physical Exertion</DescriptorName><QualifierName UI="Q000502" MajorTopicYN="Y">physiology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D019289" MajorTopicYN="N">Pyruvic Acid</DescriptorName><QualifierName UI="Q000378" MajorTopicYN="N">metabolism</QualifierName></MeshHeading></MeshHeadingList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="pubmed"><Year>2002</Year><Month>1</Month><Day>30</Day><Hour>10</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2002</Year><Month>4</Month><Day>18</Day><Hour>10</Hour><Minute>1</Minute></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>2002</Year><Month>1</Month><Day>30</Day><Hour>10</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">11815652</ArticleId></ArticleIdList></PubmedData></pubmed><affiliations><list><country><li>Canada</li></country></list><tree><noCountry><name sortKey="Litvak, M K" sort="Litvak, M K" uniqKey="Litvak M" first="M K" last="Litvak">M K Litvak</name><name sortKey="Wakefield, A M" sort="Wakefield, A M" uniqKey="Wakefield A" first="A M" last="Wakefield">A M Wakefield</name></noCountry><country name="Canada"><noRegion><name sortKey="Kieffer, J D" sort="Kieffer, J D" uniqKey="Kieffer J" first="J D" last="Kieffer">J D Kieffer</name></noRegion></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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