Test of competitive interactions for space between two benthic fish species, burbot lota lota, and stone loach Barbatula barbatula
Identifieur interne : 000D10 ( Main/Exploration ); précédent : 000D09; suivant : 000D11Test of competitive interactions for space between two benthic fish species, burbot lota lota, and stone loach Barbatula barbatula
Auteurs : P. Fischer [Allemagne]Source :
- Environmental biology of fishes [ 0378-1909 ] ; 2000.
Descripteurs français
- Pascal (Inist)
- Wicri :
English descriptors
- KwdEn :
Abstract
The substrate preferences, growth rates and foraging efficiency of two small benthic fish species, juvenile burbot, Lota Iota, and stone loach, Barbatula barbatula, were compared in combined outdoor mesocosm and indoor laboratory experiments. Both species preferred the same stony substrate when alone, but significant differences in habitat selection were found between the two species under food deprivation and competition conditions. In burbot, preference for the stony habitat was reinforced under food-deprivation conditions and became even stronger when a potential competitor, the stone loach, was present. In contrast, stone loach switched to the gravel substrate when either starving or in the presence of a heterospecific competitor. Growth rates and foraging efficiency of burbot were significantly highest in the stony substrate and decreased with finer substrates. In stone loach, neither growth rates nor foraging efficiency were significantly different among the different substrates. The results provide an example of habitat partitioning by means of different competition styles, with a stenoecious, dominant style of the burbot and an euryoecious, evasive style of stone loach allowing coexistence of two sympatric fish species by graded interactions at an individual level in the littoral zone of a large lake.
Affiliations:
- Allemagne
- Bade-Wurtemberg, District de Fribourg-en-Brisgau
- Constance (Allemagne)
- Université de Constance
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Fischer</name><affiliation wicri:level="4"><inist:fA14 i1="01"><s1>Limnological Institute, University of Konstanz</s1><s2>78457 Konstanz</s2><s3>DEU</s3><sZ>1 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><orgName type="university">Université de Constance</orgName></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">INIST</idno><idno type="inist">00-0373013</idno><date when="2000">2000</date><idno type="stanalyst">PASCAL 00-0373013 INIST</idno><idno type="RBID">Pascal:00-0373013</idno><idno type="wicri:Area/PascalFrancis/Corpus">000114</idno><idno type="wicri:Area/PascalFrancis/Curation">000005</idno><idno type="wicri:Area/PascalFrancis/Checkpoint">000110</idno><idno type="wicri:explorRef" wicri:stream="PascalFrancis" wicri:step="Checkpoint">000110</idno><idno type="wicri:doubleKey">0378-1909:2000:Fischer P:test:of:competitive</idno><idno type="wicri:Area/Main/Merge">000D56</idno><idno type="wicri:Area/Main/Curation">000D10</idno><idno type="wicri:Area/Main/Exploration">000D10</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en" level="a">Test of competitive interactions for space between two benthic fish species, burbot lota lota, and stone loach Barbatula barbatula</title><author><name sortKey="Fischer, P" sort="Fischer, P" uniqKey="Fischer P" first="P." last="Fischer">P. Fischer</name><affiliation wicri:level="4"><inist:fA14 i1="01"><s1>Limnological Institute, University of Konstanz</s1><s2>78457 Konstanz</s2><s3>DEU</s3><sZ>1 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><orgName type="university">Université de Constance</orgName></affiliation></author></analytic><series><title level="j" type="main">Environmental biology of fishes</title><title level="j" type="abbreviated">Environ. biol. fishes</title><idno type="ISSN">0378-1909</idno><imprint><date when="2000">2000</date></imprint></series></biblStruct></sourceDesc><seriesStmt><title level="j" type="main">Environmental biology of fishes</title><title level="j" type="abbreviated">Environ. biol. fishes</title><idno type="ISSN">0378-1909</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Foraging behavior</term><term>Germany</term><term>Growth rate</term><term>Habitat selection</term><term>Interspecific competition</term><term>Lakes</term><term>Lota lota</term><term>Substrate</term><term>Sympatry</term><term>Young animal</term><term>Zoobenthos</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Zoobenthos</term><term>Animal jeune</term><term>Compétition interspécifique</term><term>Sympatrie</term><term>Choix habitat</term><term>Substrat</term><term>Taux croissance</term><term>Comportement approvisionnement</term><term>Lac</term><term>Allemagne</term><term>Lota lota</term><term>Barbatula barbatula</term><term>Lac Constance</term></keywords><keywords scheme="Wicri" type="geographic" xml:lang="fr"><term>Allemagne</term></keywords><keywords scheme="Wicri" type="topic" xml:lang="fr"><term>Lac</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">The substrate preferences, growth rates and foraging efficiency of two small benthic fish species, juvenile burbot, Lota Iota, and stone loach, Barbatula barbatula, were compared in combined outdoor mesocosm and indoor laboratory experiments. Both species preferred the same stony substrate when alone, but significant differences in habitat selection were found between the two species under food deprivation and competition conditions. In burbot, preference for the stony habitat was reinforced under food-deprivation conditions and became even stronger when a potential competitor, the stone loach, was present. In contrast, stone loach switched to the gravel substrate when either starving or in the presence of a heterospecific competitor. Growth rates and foraging efficiency of burbot were significantly highest in the stony substrate and decreased with finer substrates. In stone loach, neither growth rates nor foraging efficiency were significantly different among the different substrates. The results provide an example of habitat partitioning by means of different competition styles, with a stenoecious, dominant style of the burbot and an euryoecious, evasive style of stone loach allowing coexistence of two sympatric fish species by graded interactions at an individual level in the littoral zone of a large lake.</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><orgName><li>Université de Constance</li></orgName></list><tree><country name="Allemagne"><region name="Bade-Wurtemberg"><name sortKey="Fischer, P" sort="Fischer, P" uniqKey="Fischer P" first="P." last="Fischer">P. Fischer</name></region></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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