The effects of temperature on the physiological response to low oxygen in Atlantic sturgeon.
Identifieur interne : 000374 ( Ncbi/Merge ); précédent : 000373; suivant : 000375The effects of temperature on the physiological response to low oxygen in Atlantic sturgeon.
Auteurs : James D. Kieffer [Canada] ; Daniel W. Baker ; Ashley M. Wood ; Christos N. PapadopoulosSource :
- Fish physiology and biochemistry [ 1573-5168 ] ; 2011.
English descriptors
- KwdEn :
- MESH :
- chemical , metabolism : Blood Glucose, Chlorides, Lactic Acid.
- physiology : Fishes, Oxygen.
- physiopathology : Hypoxia.
- Acclimatization, Animals, Osmolar Concentration, Temperature.
Abstract
Atlantic sturgeon (Acipenser oxyrhynchus), which are bottom dwelling and migratory fish, experience environmental hypoxia in their natural environment. Atlantic sturgeon, acclimated to either 5 or 15°C, were subjected to a 1 h severe (<10 mm Hg) hypoxia challenge in order to document their physiological responses. We measured hematological parameters, including O(2) transport (hemoglobin, hematocrit), ionic (chloride, osmolality), and metabolic (glucose, lactate) variables under normoxic conditions (~160 mm Hg), immediately following a 1 h exposure to hypoxic water, and following a further 2 h of recovery from this challenge in normoxic water. In a second experiment, we assessed the opercular beat frequency before, during, and after hypoxic exposure. Hemoglobin concentrations and hematocrit were significantly different between fish held at 5°C vs. 15°C and also significantly different between normoxia prior to hypoxia and following recovery. Plasma lactate concentrations increased following hypoxia at both temperatures, indicative of an increase in anaerobic metabolism. In contrast, a significant increase in plasma glucose concentrations in response to hypoxia only occurred at 5°C, suggesting different fuel demands under different temperatures. Changes in opercular beat frequency (OBF) were dependent on temperature. At 5°C, OBF increased upon exposure to hypoxia, but returned to pre-exposure levels within 35 min for the remainder of the experiment. During hypoxia at 15°C, OBF increased very briefly, but then rapidly (within 20 min) decreased to levels below control values. Following a return to normoxia, OBF quickly increased to control levels. Overall, these findings suggest that Atlantic sturgeons are relatively tolerant to short-term and severe hypoxic stress, and the strategies for hypoxia tolerance may be temperature dependent.
DOI: 10.1007/s10695-011-9479-y
PubMed: 21461903
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<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">The effects of temperature on the physiological response to low oxygen in Atlantic sturgeon.</title><author><name sortKey="Kieffer, James D" sort="Kieffer, James D" uniqKey="Kieffer J" first="James D" last="Kieffer">James D. Kieffer</name><affiliation wicri:level="1"><nlm:affiliation>Department of Biology, University of New Brunswick, Saint John, NB, Canada. jkieffer@unb.ca</nlm:affiliation><country xml:lang="fr">Canada</country><wicri:regionArea>Department of Biology, University of New Brunswick, Saint John, NB</wicri:regionArea><wicri:noRegion>NB</wicri:noRegion></affiliation></author><author><name sortKey="Baker, Daniel W" sort="Baker, Daniel W" uniqKey="Baker D" first="Daniel W" last="Baker">Daniel W. Baker</name></author><author><name sortKey="Wood, Ashley M" sort="Wood, Ashley M" uniqKey="Wood A" first="Ashley M" last="Wood">Ashley M. Wood</name></author><author><name sortKey="Papadopoulos, Christos N" sort="Papadopoulos, Christos N" uniqKey="Papadopoulos C" first="Christos N" last="Papadopoulos">Christos N. 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Kieffer</name><affiliation wicri:level="1"><nlm:affiliation>Department of Biology, University of New Brunswick, Saint John, NB, Canada. jkieffer@unb.ca</nlm:affiliation><country xml:lang="fr">Canada</country><wicri:regionArea>Department of Biology, University of New Brunswick, Saint John, NB</wicri:regionArea><wicri:noRegion>NB</wicri:noRegion></affiliation></author><author><name sortKey="Baker, Daniel W" sort="Baker, Daniel W" uniqKey="Baker D" first="Daniel W" last="Baker">Daniel W. Baker</name></author><author><name sortKey="Wood, Ashley M" sort="Wood, Ashley M" uniqKey="Wood A" first="Ashley M" last="Wood">Ashley M. Wood</name></author><author><name sortKey="Papadopoulos, Christos N" sort="Papadopoulos, Christos N" uniqKey="Papadopoulos C" first="Christos N" last="Papadopoulos">Christos N. Papadopoulos</name></author></analytic><series><title level="j">Fish physiology and biochemistry</title><idno type="eISSN">1573-5168</idno><imprint><date when="2011" type="published">2011</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Acclimatization</term><term>Animals</term><term>Blood Glucose (metabolism)</term><term>Chlorides (metabolism)</term><term>Fishes (physiology)</term><term>Hypoxia (physiopathology)</term><term>Lactic Acid (metabolism)</term><term>Osmolar Concentration</term><term>Oxygen (physiology)</term><term>Temperature</term></keywords><keywords scheme="MESH" type="chemical" qualifier="metabolism" xml:lang="en"><term>Blood Glucose</term><term>Chlorides</term><term>Lactic Acid</term></keywords><keywords scheme="MESH" qualifier="physiology" xml:lang="en"><term>Fishes</term><term>Oxygen</term></keywords><keywords scheme="MESH" qualifier="physiopathology" xml:lang="en"><term>Hypoxia</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Acclimatization</term><term>Animals</term><term>Osmolar Concentration</term><term>Temperature</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Atlantic sturgeon (Acipenser oxyrhynchus), which are bottom dwelling and migratory fish, experience environmental hypoxia in their natural environment. Atlantic sturgeon, acclimated to either 5 or 15°C, were subjected to a 1 h severe (<10 mm Hg) hypoxia challenge in order to document their physiological responses. We measured hematological parameters, including O(2) transport (hemoglobin, hematocrit), ionic (chloride, osmolality), and metabolic (glucose, lactate) variables under normoxic conditions (~160 mm Hg), immediately following a 1 h exposure to hypoxic water, and following a further 2 h of recovery from this challenge in normoxic water. In a second experiment, we assessed the opercular beat frequency before, during, and after hypoxic exposure. Hemoglobin concentrations and hematocrit were significantly different between fish held at 5°C vs. 15°C and also significantly different between normoxia prior to hypoxia and following recovery. Plasma lactate concentrations increased following hypoxia at both temperatures, indicative of an increase in anaerobic metabolism. In contrast, a significant increase in plasma glucose concentrations in response to hypoxia only occurred at 5°C, suggesting different fuel demands under different temperatures. Changes in opercular beat frequency (OBF) were dependent on temperature. At 5°C, OBF increased upon exposure to hypoxia, but returned to pre-exposure levels within 35 min for the remainder of the experiment. During hypoxia at 15°C, OBF increased very briefly, but then rapidly (within 20 min) decreased to levels below control values. Following a return to normoxia, OBF quickly increased to control levels. Overall, these findings suggest that Atlantic sturgeons are relatively tolerant to short-term and severe hypoxic stress, and the strategies for hypoxia tolerance may be temperature dependent.</div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">21461903</PMID><DateCreated><Year>2011</Year><Month>11</Month><Day>07</Day></DateCreated><DateCompleted><Year>2012</Year><Month>03</Month><Day>16</Day></DateCompleted><DateRevised><Year>2016</Year><Month>11</Month><Day>25</Day></DateRevised><Article PubModel="Print-Electronic"><Journal><ISSN IssnType="Electronic">1573-5168</ISSN><JournalIssue CitedMedium="Internet"><Volume>37</Volume><Issue>4</Issue><PubDate><Year>2011</Year><Month>Dec</Month></PubDate></JournalIssue><Title>Fish physiology and biochemistry</Title><ISOAbbreviation>Fish Physiol. Biochem.</ISOAbbreviation></Journal><ArticleTitle>The effects of temperature on the physiological response to low oxygen in Atlantic sturgeon.</ArticleTitle><Pagination><MedlinePgn>809-19</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.1007/s10695-011-9479-y</ELocationID><Abstract><AbstractText>Atlantic sturgeon (Acipenser oxyrhynchus), which are bottom dwelling and migratory fish, experience environmental hypoxia in their natural environment. Atlantic sturgeon, acclimated to either 5 or 15°C, were subjected to a 1 h severe (<10 mm Hg) hypoxia challenge in order to document their physiological responses. We measured hematological parameters, including O(2) transport (hemoglobin, hematocrit), ionic (chloride, osmolality), and metabolic (glucose, lactate) variables under normoxic conditions (~160 mm Hg), immediately following a 1 h exposure to hypoxic water, and following a further 2 h of recovery from this challenge in normoxic water. In a second experiment, we assessed the opercular beat frequency before, during, and after hypoxic exposure. Hemoglobin concentrations and hematocrit were significantly different between fish held at 5°C vs. 15°C and also significantly different between normoxia prior to hypoxia and following recovery. Plasma lactate concentrations increased following hypoxia at both temperatures, indicative of an increase in anaerobic metabolism. In contrast, a significant increase in plasma glucose concentrations in response to hypoxia only occurred at 5°C, suggesting different fuel demands under different temperatures. Changes in opercular beat frequency (OBF) were dependent on temperature. At 5°C, OBF increased upon exposure to hypoxia, but returned to pre-exposure levels within 35 min for the remainder of the experiment. During hypoxia at 15°C, OBF increased very briefly, but then rapidly (within 20 min) decreased to levels below control values. Following a return to normoxia, OBF quickly increased to control levels. Overall, these findings suggest that Atlantic sturgeons are relatively tolerant to short-term and severe hypoxic stress, and the strategies for hypoxia tolerance may be temperature dependent.</AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Kieffer</LastName><ForeName>James D</ForeName><Initials>JD</Initials><AffiliationInfo><Affiliation>Department of Biology, University of New Brunswick, Saint John, NB, Canada. jkieffer@unb.ca</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Baker</LastName><ForeName>Daniel W</ForeName><Initials>DW</Initials></Author><Author ValidYN="Y"><LastName>Wood</LastName><ForeName>Ashley M</ForeName><Initials>AM</Initials></Author><Author ValidYN="Y"><LastName>Papadopoulos</LastName><ForeName>Christos N</ForeName><Initials>CN</Initials></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType><PublicationType UI="D013485">Research Support, Non-U.S. Gov't</PublicationType></PublicationTypeList><ArticleDate DateType="Electronic"><Year>2011</Year><Month>04</Month><Day>03</Day></ArticleDate></Article><MedlineJournalInfo><Country>Netherlands</Country><MedlineTA>Fish Physiol Biochem</MedlineTA><NlmUniqueID>100955049</NlmUniqueID><ISSNLinking>0920-1742</ISSNLinking></MedlineJournalInfo><ChemicalList><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance UI="D001786">Blood Glucose</NameOfSubstance></Chemical><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance UI="D002712">Chlorides</NameOfSubstance></Chemical><Chemical><RegistryNumber>33X04XA5AT</RegistryNumber><NameOfSubstance UI="D019344">Lactic Acid</NameOfSubstance></Chemical><Chemical><RegistryNumber>S88TT14065</RegistryNumber><NameOfSubstance UI="D010100">Oxygen</NameOfSubstance></Chemical></ChemicalList><CitationSubset>IM</CitationSubset><MeshHeadingList><MeshHeading><DescriptorName UI="D000064" MajorTopicYN="N">Acclimatization</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D000818" MajorTopicYN="N">Animals</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D001786" MajorTopicYN="N">Blood Glucose</DescriptorName><QualifierName UI="Q000378" MajorTopicYN="N">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D002712" MajorTopicYN="N">Chlorides</DescriptorName><QualifierName UI="Q000378" MajorTopicYN="N">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D005399" MajorTopicYN="N">Fishes</DescriptorName><QualifierName UI="Q000502" MajorTopicYN="Y">physiology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D000860" MajorTopicYN="N">Hypoxia</DescriptorName><QualifierName UI="Q000503" MajorTopicYN="Y">physiopathology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D019344" MajorTopicYN="N">Lactic Acid</DescriptorName><QualifierName UI="Q000378" MajorTopicYN="N">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D009994" MajorTopicYN="N">Osmolar Concentration</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D010100" MajorTopicYN="N">Oxygen</DescriptorName><QualifierName UI="Q000502" MajorTopicYN="Y">physiology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D013696" MajorTopicYN="Y">Temperature</DescriptorName></MeshHeading></MeshHeadingList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="received"><Year>2010</Year><Month>11</Month><Day>24</Day></PubMedPubDate><PubMedPubDate PubStatus="accepted"><Year>2011</Year><Month>03</Month><Day>14</Day></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>2011</Year><Month>4</Month><Day>5</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="pubmed"><Year>2011</Year><Month>4</Month><Day>5</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2012</Year><Month>3</Month><Day>17</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">21461903</ArticleId><ArticleId IdType="doi">10.1007/s10695-011-9479-y</ArticleId></ArticleIdList></PubmedData></pubmed><affiliations><list><country><li>Canada</li></country></list><tree><noCountry><name sortKey="Baker, Daniel W" sort="Baker, Daniel W" uniqKey="Baker D" first="Daniel W" last="Baker">Daniel W. Baker</name><name sortKey="Papadopoulos, Christos N" sort="Papadopoulos, Christos N" uniqKey="Papadopoulos C" first="Christos N" last="Papadopoulos">Christos N. Papadopoulos</name><name sortKey="Wood, Ashley M" sort="Wood, Ashley M" uniqKey="Wood A" first="Ashley M" last="Wood">Ashley M. Wood</name></noCountry><country name="Canada"><noRegion><name sortKey="Kieffer, James D" sort="Kieffer, James D" uniqKey="Kieffer J" first="James D" last="Kieffer">James D. Kieffer</name></noRegion></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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