The effects of temperature on the physiological response to low oxygen in Atlantic sturgeon.
Identifieur interne : 000573 ( Main/Curation ); précédent : 000572; suivant : 000574The 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
Links toward previous steps (curation, corpus...)
- to stream PubMed, to step Corpus: Pour aller vers cette notice dans l'étape Curation :000332
- to stream PubMed, to step Curation: Pour aller vers cette notice dans l'étape Curation :000332
- to stream PubMed, to step Checkpoint: Pour aller vers cette notice dans l'étape Curation :000332
- to stream Ncbi, to step Merge: Pour aller vers cette notice dans l'étape Curation :000374
- to stream Ncbi, to step Curation: Pour aller vers cette notice dans l'étape Curation :000374
- to stream Ncbi, to step Checkpoint: Pour aller vers cette notice dans l'étape Curation :000374
- to stream Main, to step Merge: Pour aller vers cette notice dans l'étape Curation :000582
Links to Exploration step
pubmed:21461903Le document en format XML
<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. Papadopoulos</name>
</author>
</titleStmt>
<publicationStmt><idno type="wicri:source">PubMed</idno>
<date when="2011">2011</date>
<idno type="RBID">pubmed:21461903</idno>
<idno type="pmid">21461903</idno>
<idno type="doi">10.1007/s10695-011-9479-y</idno>
<idno type="wicri:Area/PubMed/Corpus">000332</idno>
<idno type="wicri:explorRef" wicri:stream="PubMed" wicri:step="Corpus" wicri:corpus="PubMed">000332</idno>
<idno type="wicri:Area/PubMed/Curation">000332</idno>
<idno type="wicri:explorRef" wicri:stream="PubMed" wicri:step="Curation">000332</idno>
<idno type="wicri:Area/PubMed/Checkpoint">000332</idno>
<idno type="wicri:explorRef" wicri:stream="Checkpoint" wicri:step="PubMed">000332</idno>
<idno type="wicri:Area/Ncbi/Merge">000374</idno>
<idno type="wicri:Area/Ncbi/Curation">000374</idno>
<idno type="wicri:Area/Ncbi/Checkpoint">000374</idno>
<idno type="wicri:Area/Main/Merge">000582</idno>
<idno type="wicri:Area/Main/Curation">000573</idno>
</publicationStmt>
<sourceDesc><biblStruct><analytic><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. 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>
</record>
Pour manipuler ce document sous Unix (Dilib)
EXPLOR_STEP=$WICRI_ROOT/Wicri/Eau/explor/EsturgeonV1/Data/Main/Curation
HfdSelect -h $EXPLOR_STEP/biblio.hfd -nk 000573 | SxmlIndent | more
Ou
HfdSelect -h $EXPLOR_AREA/Data/Main/Curation/biblio.hfd -nk 000573 | SxmlIndent | more
Pour mettre un lien sur cette page dans le réseau Wicri
{{Explor lien |wiki= Wicri/Eau |area= EsturgeonV1 |flux= Main |étape= Curation |type= RBID |clé= pubmed:21461903 |texte= The effects of temperature on the physiological response to low oxygen in Atlantic sturgeon. }}
Pour générer des pages wiki
HfdIndexSelect -h $EXPLOR_AREA/Data/Main/Curation/RBID.i -Sk "pubmed:21461903" \ | HfdSelect -Kh $EXPLOR_AREA/Data/Main/Curation/biblio.hfd \ | NlmPubMed2Wicri -a EsturgeonV1
This area was generated with Dilib version V0.6.27. |