Predation of perch on vendace larvae: diet composition in an oligotrophic lake and digestion time of the larvae
Identifieur interne : 000762 ( Main/Exploration ); précédent : 000761; suivant : 000763Predation of perch on vendace larvae: diet composition in an oligotrophic lake and digestion time of the larvae
Auteurs : H. Haakana [Finlande] ; H. Huuskonen [Finlande] ; J. Karjalainen [Finlande]Source :
- Journal of Fish Biology [ 0022-1112 ] ; 2007-04.
English descriptors
- KwdEn :
Abstract
The diet of perch Perca fluviatilis was studied to reveal possible predation on vendace Coregonus albula larvae in an oligotrophic lake. Perch diet changed with the size of the fish: small perch ate mainly zooplankton and the diet shifted more to benthic invertebrates and fishes in larger perch. There were also annual and spatial differences in the diet, probably reflecting differences in the availability of prey animals. Perch predation on vendace larvae was only observed in the area with high availability of the larvae. The result suggested strengthened predation when the density of the larvae increases. According to bioenergetics modelling, the perch population increased natural mortality of vendace larvae only marginally. Food intake of spawning female perch was slightly reduced, whereas spawning males fed similarly to non‐spawning males. Hence, the spawning period of perch was only a minor refuge for vendace larvae. Laboratory experiments of perch digestion rate demonstrated that, due to rapid digestion of the small fish larvae, diet sampling interval should not be >2 h in the field.
Url:
DOI: 10.1111/j.1095-8649.2007.01383.x
Affiliations:
Links toward previous steps (curation, corpus...)
- to stream Istex, to step Corpus: 000892
- to stream Istex, to step Curation: 000892
- to stream Istex, to step Checkpoint: 000432
- to stream Main, to step Merge: 000774
- to stream Main, to step Curation: 000762
Le document en format XML
<record><TEI wicri:istexFullTextTei="biblStruct"><teiHeader><fileDesc><titleStmt><title xml:lang="en">Predation of perch on vendace larvae: diet composition in an oligotrophic lake and digestion time of the larvae</title>
<author><name sortKey="Haakana, H" sort="Haakana, H" uniqKey="Haakana H" first="H." last="Haakana">H. Haakana</name>
</author>
<author><name sortKey="Huuskonen, H" sort="Huuskonen, H" uniqKey="Huuskonen H" first="H." last="Huuskonen">H. Huuskonen</name>
</author>
<author><name sortKey="Karjalainen, J" sort="Karjalainen, J" uniqKey="Karjalainen J" first="J." last="Karjalainen">J. Karjalainen</name>
</author>
</titleStmt>
<publicationStmt><idno type="wicri:source">ISTEX</idno>
<idno type="RBID">ISTEX:6309B477EDED74E2B489F0125814AA3BDAB1DDD9</idno>
<date when="2007" year="2007">2007</date>
<idno type="doi">10.1111/j.1095-8649.2007.01383.x</idno>
<idno type="url">https://api.istex.fr/document/6309B477EDED74E2B489F0125814AA3BDAB1DDD9/fulltext/pdf</idno>
<idno type="wicri:Area/Istex/Corpus">000892</idno>
<idno type="wicri:Area/Istex/Curation">000892</idno>
<idno type="wicri:Area/Istex/Checkpoint">000432</idno>
<idno type="wicri:explorRef" wicri:stream="Istex" wicri:step="Checkpoint">000432</idno>
<idno type="wicri:doubleKey">0022-1112:2007:Haakana H:predation:of:perch</idno>
<idno type="wicri:Area/Main/Merge">000774</idno>
<idno type="wicri:Area/Main/Curation">000762</idno>
<idno type="wicri:Area/Main/Exploration">000762</idno>
</publicationStmt>
<sourceDesc><biblStruct><analytic><title level="a" type="main" xml:lang="en">Predation of perch on vendace larvae: diet composition in an oligotrophic lake and digestion time of the larvae</title>
<author><name sortKey="Haakana, H" sort="Haakana, H" uniqKey="Haakana H" first="H." last="Haakana">H. Haakana</name>
<affiliation wicri:level="4"><country xml:lang="fr">Finlande</country>
<wicri:regionArea>* Ecological Research Institute, Faculty of Biosciences, University of Joensuu, P. O. Box 111, FI‐80101 Joensuu, Finland and ‡ Department of Biological and Environmental Science, P. O. Box 35, FI‐40351 University of Jyväskylä</wicri:regionArea>
<placeName><settlement type="city">Jyväskylä</settlement>
<region type="région" nuts="2">Finlande-Centrale</region>
</placeName>
<orgName type="university">Université de Jyväskylä</orgName>
</affiliation>
</author>
<author><name sortKey="Huuskonen, H" sort="Huuskonen, H" uniqKey="Huuskonen H" first="H." last="Huuskonen">H. Huuskonen</name>
<affiliation wicri:level="4"><country xml:lang="fr">Finlande</country>
<wicri:regionArea>* Ecological Research Institute, Faculty of Biosciences, University of Joensuu, P. O. Box 111, FI‐80101 Joensuu, Finland and ‡ Department of Biological and Environmental Science, P. O. Box 35, FI‐40351 University of Jyväskylä</wicri:regionArea>
<placeName><settlement type="city">Jyväskylä</settlement>
<region type="région" nuts="2">Finlande-Centrale</region>
</placeName>
<orgName type="university">Université de Jyväskylä</orgName>
</affiliation>
</author>
<author><name sortKey="Karjalainen, J" sort="Karjalainen, J" uniqKey="Karjalainen J" first="J." last="Karjalainen">J. Karjalainen</name>
<affiliation wicri:level="4"><country xml:lang="fr">Finlande</country>
<wicri:regionArea>* Ecological Research Institute, Faculty of Biosciences, University of Joensuu, P. O. Box 111, FI‐80101 Joensuu, Finland and ‡ Department of Biological and Environmental Science, P. O. Box 35, FI‐40351 University of Jyväskylä</wicri:regionArea>
<placeName><settlement type="city">Jyväskylä</settlement>
<region type="région" nuts="2">Finlande-Centrale</region>
</placeName>
<orgName type="university">Université de Jyväskylä</orgName>
</affiliation>
</author>
</analytic>
<monogr></monogr>
<series><title level="j">Journal of Fish Biology</title>
<idno type="ISSN">0022-1112</idno>
<idno type="eISSN">1095-8649</idno>
<imprint><publisher>Blackwell Publishing Ltd</publisher>
<pubPlace>Oxford, UK</pubPlace>
<date type="published" when="2007-04">2007-04</date>
<biblScope unit="volume">70</biblScope>
<biblScope unit="issue">4</biblScope>
<biblScope unit="page" from="1171">1171</biblScope>
<biblScope unit="page" to="1184">1184</biblScope>
</imprint>
<idno type="ISSN">0022-1112</idno>
</series>
<idno type="istex">6309B477EDED74E2B489F0125814AA3BDAB1DDD9</idno>
<idno type="DOI">10.1111/j.1095-8649.2007.01383.x</idno>
<idno type="ArticleID">JFB1383</idno>
</biblStruct>
</sourceDesc>
<seriesStmt><idno type="ISSN">0022-1112</idno>
</seriesStmt>
</fileDesc>
<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Coregonus albula</term>
<term>Perca fluviatilis</term>
<term>bioenergetics modelling</term>
<term>digestion</term>
<term>predation</term>
<term>sampling interval</term>
</keywords>
</textClass>
<langUsage><language ident="en">en</language>
</langUsage>
</profileDesc>
</teiHeader>
<front><div type="abstract" xml:lang="en">The diet of perch Perca fluviatilis was studied to reveal possible predation on vendace Coregonus albula larvae in an oligotrophic lake. Perch diet changed with the size of the fish: small perch ate mainly zooplankton and the diet shifted more to benthic invertebrates and fishes in larger perch. There were also annual and spatial differences in the diet, probably reflecting differences in the availability of prey animals. Perch predation on vendace larvae was only observed in the area with high availability of the larvae. The result suggested strengthened predation when the density of the larvae increases. According to bioenergetics modelling, the perch population increased natural mortality of vendace larvae only marginally. Food intake of spawning female perch was slightly reduced, whereas spawning males fed similarly to non‐spawning males. Hence, the spawning period of perch was only a minor refuge for vendace larvae. Laboratory experiments of perch digestion rate demonstrated that, due to rapid digestion of the small fish larvae, diet sampling interval should not be >2 h in the field.</div>
</front>
</TEI>
<affiliations><list><country><li>Finlande</li>
</country>
<region><li>Finlande-Centrale</li>
</region>
<settlement><li>Jyväskylä</li>
</settlement>
<orgName><li>Université de Jyväskylä</li>
</orgName>
</list>
<tree><country name="Finlande"><region name="Finlande-Centrale"><name sortKey="Haakana, H" sort="Haakana, H" uniqKey="Haakana H" first="H." last="Haakana">H. Haakana</name>
</region>
<name sortKey="Huuskonen, H" sort="Huuskonen, H" uniqKey="Huuskonen H" first="H." last="Huuskonen">H. Huuskonen</name>
<name sortKey="Karjalainen, J" sort="Karjalainen, J" uniqKey="Karjalainen J" first="J." last="Karjalainen">J. Karjalainen</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 000762 | SxmlIndent | more
Ou
HfdSelect -h $EXPLOR_AREA/Data/Main/Exploration/biblio.hfd -nk 000762 | 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= ISTEX:6309B477EDED74E2B489F0125814AA3BDAB1DDD9 |texte= Predation of perch on vendace larvae: diet composition in an oligotrophic lake and digestion time of the larvae }}
This area was generated with Dilib version V0.6.39. |