Temperature preferences and critical thermal limits of burbot: Implications for habitat selection and ontogenetic habitat shift
Identifieur interne : 000B52 ( Main/Exploration ); précédent : 000B51; suivant : 000B53Temperature preferences and critical thermal limits of burbot: Implications for habitat selection and ontogenetic habitat shift
Auteurs : N. Hofmann [Allemagne] ; P. Fischer [Allemagne]Source :
- Transactions of the American Fisheries Society : (1900) [ 0002-8487 ] ; 2002.
Descripteurs français
- Pascal (Inist)
- Wicri :
- topic : Habitat.
English descriptors
- KwdEn :
Abstract
In large lakes, burbot Lota Iota utilize several habitats during their ontogenesis. While juveniles are typically littoral dwellers, adults often prefer the cold profundal waters, especially during the summer months. Such distinct seasonal or ontogenetic habitat shifts are often induced by proximate abiotic factors that guide the fish toward another habitat in which either physiological performance is optimized or survival is increased. Temperature is often considered to be such a factor, especially in cold-stenothermal species. In thermal gradient experiments, the effects of the acclimation temperature (AT) on the preferred temperature (PT) and the critical thermal maximum and minimum of burbot were studied. A significant nonlinear relationship was found between PT and AT in small (10-20 cm total length) burbot (SEs in parentheses): PT = -2.1363 (±0.5455) AT + 0.0732 (±0.0207) AT2 + 26.2708 (±3.2075). The final temperature preferendum was 11.4°C. For large (20-30 cm) burbot, no such relationship between acclimation temperature and preferred temperature was found, and a final temperature preferendum of 14.2°C was calculated. Both size-classes showed a positive linear relationship between the critical thermal maximum (CTMa) and AT: CTMa = 0.3254 (±0.0198) AT + 25.1106 (±0.2676) (R2 = 0.94) for small burbot, and CTMa = 0.3688 (±0.0276) AT + 24.2986 (±0.3742) (R2 = 0.91) for large burbot. A critical thermal minimum of 3.3°C was found for small burbot acclimated to 19.6°C. The results show that even during summer the littoral water temperature in Lake Constance is very unlikely to force juvenile burbot towards the cold profundal zone. However, the data provide good evidence that changes in water temperature in spring do act as a trigger for the juveniles to leave the littoral to avoid a thermal trap during summer.
Affiliations:
Links toward previous steps (curation, corpus...)
- to stream PascalFrancis, to step Corpus: 000096
- to stream PascalFrancis, to step Curation: 000022
- to stream PascalFrancis, to step Checkpoint: 000094
- to stream Main, to step Merge: 000B88
- to stream Main, to step Curation: 000B52
Le document en format XML
<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en" level="a">Temperature preferences and critical thermal limits of burbot: Implications for habitat selection and ontogenetic habitat shift</title><author><name sortKey="Hofmann, N" sort="Hofmann, N" uniqKey="Hofmann N" first="N." last="Hofmann">N. Hofmann</name><affiliation wicri:level="3"><inist:fA14 i1="01"><s1>Limnologisches Institut, Universität Konstanz, Mainaustrasse 212</s1><s2>78457 Konstanz</s2><s3>DEU</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ></inist:fA14><country>Allemagne</country><placeName><region type="land" nuts="1">Bade-Wurtemberg</region><region type="district" nuts="2">District de Fribourg-en-Brisgau</region><settlement type="city">Constance (Allemagne)</settlement></placeName></affiliation></author><author><name sortKey="Fischer, P" sort="Fischer, P" uniqKey="Fischer P" first="P." last="Fischer">P. Fischer</name><affiliation wicri:level="3"><inist:fA14 i1="01"><s1>Limnologisches Institut, Universität Konstanz, Mainaustrasse 212</s1><s2>78457 Konstanz</s2><s3>DEU</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ></inist:fA14><country>Allemagne</country><placeName><region type="land" nuts="1">Bade-Wurtemberg</region><region type="district" nuts="2">District de Fribourg-en-Brisgau</region><settlement type="city">Constance (Allemagne)</settlement></placeName></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">INIST</idno><idno type="inist">03-0029436</idno><date when="2002">2002</date><idno type="stanalyst">PASCAL 03-0029436 INIST</idno><idno type="RBID">Pascal:03-0029436</idno><idno type="wicri:Area/PascalFrancis/Corpus">000096</idno><idno type="wicri:Area/PascalFrancis/Curation">000022</idno><idno type="wicri:Area/PascalFrancis/Checkpoint">000094</idno><idno type="wicri:explorRef" wicri:stream="PascalFrancis" wicri:step="Checkpoint">000094</idno><idno type="wicri:doubleKey">0002-8487:2002:Hofmann N:temperature:preferences:and</idno><idno type="wicri:Area/Main/Merge">000B88</idno><idno type="wicri:Area/Main/Curation">000B52</idno><idno type="wicri:Area/Main/Exploration">000B52</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en" level="a">Temperature preferences and critical thermal limits of burbot: Implications for habitat selection and ontogenetic habitat shift</title><author><name sortKey="Hofmann, N" sort="Hofmann, N" uniqKey="Hofmann N" first="N." last="Hofmann">N. Hofmann</name><affiliation wicri:level="3"><inist:fA14 i1="01"><s1>Limnologisches Institut, Universität Konstanz, Mainaustrasse 212</s1><s2>78457 Konstanz</s2><s3>DEU</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ></inist:fA14><country>Allemagne</country><placeName><region type="land" nuts="1">Bade-Wurtemberg</region><region type="district" nuts="2">District de Fribourg-en-Brisgau</region><settlement type="city">Constance (Allemagne)</settlement></placeName></affiliation></author><author><name sortKey="Fischer, P" sort="Fischer, P" uniqKey="Fischer P" first="P." last="Fischer">P. Fischer</name><affiliation wicri:level="3"><inist:fA14 i1="01"><s1>Limnologisches Institut, Universität Konstanz, Mainaustrasse 212</s1><s2>78457 Konstanz</s2><s3>DEU</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ></inist:fA14><country>Allemagne</country><placeName><region type="land" nuts="1">Bade-Wurtemberg</region><region type="district" nuts="2">District de Fribourg-en-Brisgau</region><settlement type="city">Constance (Allemagne)</settlement></placeName></affiliation></author></analytic><series><title level="j" type="main">Transactions of the American Fisheries Society : (1900)</title><title level="j" type="abbreviated">Trans. Am. Fish. Soc. : (1900)</title><idno type="ISSN">0002-8487</idno><imprint><date when="2002">2002</date></imprint></series></biblStruct></sourceDesc><seriesStmt><title level="j" type="main">Transactions of the American Fisheries Society : (1900)</title><title level="j" type="abbreviated">Trans. Am. Fish. Soc. : (1900)</title><idno type="ISSN">0002-8487</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Adaptation</term><term>Body size</term><term>Critical threshold</term><term>Development</term><term>Habitat</term><term>Habitat selection</term><term>Interindividual comparison</term><term>Lake Constance</term><term>Lota lota</term><term>Preferendum</term><term>Seasonal variation</term><term>Temperature</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Développement</term><term>Habitat</term><term>Choix habitat</term><term>Température</term><term>Préférendum</term><term>Seuil critique</term><term>Comparaison interindividuelle</term><term>Taille corporelle</term><term>Adaptation</term><term>Variation saisonnière</term><term>Lac Constance</term><term>Lota lota</term></keywords><keywords scheme="Wicri" type="topic" xml:lang="fr"><term>Habitat</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">In large lakes, burbot Lota Iota utilize several habitats during their ontogenesis. While juveniles are typically littoral dwellers, adults often prefer the cold profundal waters, especially during the summer months. Such distinct seasonal or ontogenetic habitat shifts are often induced by proximate abiotic factors that guide the fish toward another habitat in which either physiological performance is optimized or survival is increased. Temperature is often considered to be such a factor, especially in cold-stenothermal species. In thermal gradient experiments, the effects of the acclimation temperature (AT) on the preferred temperature (PT) and the critical thermal maximum and minimum of burbot were studied. A significant nonlinear relationship was found between PT and AT in small (10-20 cm total length) burbot (SEs in parentheses): PT = -2.1363 (±0.5455) AT + 0.0732 (±0.0207) AT<sup>2</sup> + 26.2708 (±3.2075). The final temperature preferendum was 11.4°C. For large (20-30 cm) burbot, no such relationship between acclimation temperature and preferred temperature was found, and a final temperature preferendum of 14.2°C was calculated. Both size-classes showed a positive linear relationship between the critical thermal maximum (CTMa) and AT: CTMa = 0.3254 (±0.0198) AT + 25.1106 (±0.2676) (R<sup>2</sup> = 0.94) for small burbot, and CTMa = 0.3688 (±0.0276) AT + 24.2986 (±0.3742) (R<sup>2</sup> = 0.91) for large burbot. A critical thermal minimum of 3.3°C was found for small burbot acclimated to 19.6°C. The results show that even during summer the littoral water temperature in Lake Constance is very unlikely to force juvenile burbot towards the cold profundal zone. However, the data provide good evidence that changes in water temperature in spring do act as a trigger for the juveniles to leave the littoral to avoid a thermal trap during summer.</div></front></TEI><affiliations><list><country><li>Allemagne</li></country><region><li>Bade-Wurtemberg</li><li>District de Fribourg-en-Brisgau</li></region><settlement><li>Constance (Allemagne)</li></settlement></list><tree><country name="Allemagne"><region name="Bade-Wurtemberg"><name sortKey="Hofmann, N" sort="Hofmann, N" uniqKey="Hofmann N" first="N." last="Hofmann">N. Hofmann</name></region><name sortKey="Fischer, P" sort="Fischer, P" uniqKey="Fischer P" first="P." last="Fischer">P. Fischer</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
EXPLOR_STEP=$WICRI_ROOT/Eau/explor/LotaV3/Data/Main/Exploration
HfdSelect -h $EXPLOR_STEP/biblio.hfd -nk 000B52 | SxmlIndent | more
Ou
HfdSelect -h $EXPLOR_AREA/Data/Main/Exploration/biblio.hfd -nk 000B52 | SxmlIndent | more
Pour mettre un lien sur cette page dans le réseau Wicri
{{Explor lien
|wiki= Eau
|area= LotaV3
|flux= Main
|étape= Exploration
|type= RBID
|clé= Pascal:03-0029436
|texte= Temperature preferences and critical thermal limits of burbot: Implications for habitat selection and ontogenetic habitat shift
}}
| This area was generated with Dilib version V0.6.39. |  |