Dietary plasticity of Arctic charr (Salvelinus alpinus) facilitates coexistence with competitively superior European whitefish (Coregonus lavaretus)
Identifieur interne : 000341 ( Main/Exploration ); précédent : 000340; suivant : 000342Dietary plasticity of Arctic charr (Salvelinus alpinus) facilitates coexistence with competitively superior European whitefish (Coregonus lavaretus)
Auteurs : Antti P. Eloranta [Finlande] ; Anna Siwertsson [Norvège] ; Rune Knudsen [Norvège] ; Per-Arne Amundsen [Norvège]Source :
- Ecology of Freshwater Fish [ 0906-6691 ] ; 2011-12.
English descriptors
Abstract
Abstract – Habitat use and diet of Arctic charr (Salvelinus alpinus) coexisting with European whitefish (Coregonus lavaretus) and grayling (Thymallus thymallus) were studied in one deep and two relatively shallow subarctic lakes in northern Norway. Stomach content and stable isotope analyses revealed clear and temporally stable resource partitioning between the species in all three lakes. Arctic charr had a wide and flexible trophic niche and was the only piscivorous species. In contrast, whitefish and grayling had remarkably stable planktivorous and benthivorous niches, respectively. In the deepest lake, Arctic charr together with grayling mainly utilised littoral benthos, while piscivory was more prevalent in Arctic charr in the two shallower lakes. In one of the shallow lakes, whitefish was apparently relegated to the inferior profundal niche because of dominance of the littoral by grayling. Our results suggest that Arctic charr may not necessarily need an extensive profundal zone as a refuge, but can coexist with whitefish if a third competing fish species like grayling occurs in the littoral habitat or if profitable small prey fish are available. The study demonstrates that strong dietary plasticity of Arctic charr is instrumental in the observed coexistence with the commonly competitively superior whitefish.
Url:
DOI: 10.1111/j.1600-0633.2011.00504.x
Affiliations:
Links toward previous steps (curation, corpus...)
- to stream Istex, to step Corpus: 000200
- to stream Istex, to step Curation: 000200
- to stream Istex, to step Checkpoint: 000110
- to stream Main, to step Merge: 000344
- to stream Main, to step Curation: 000341
Le document en format XML
<record><TEI wicri:istexFullTextTei="biblStruct"><teiHeader><fileDesc><titleStmt><title xml:lang="en">Dietary plasticity of Arctic charr (Salvelinus alpinus) facilitates coexistence with competitively superior European whitefish (Coregonus lavaretus)</title><author><name sortKey="Eloranta, Antti P" sort="Eloranta, Antti P" uniqKey="Eloranta A" first="Antti P." last="Eloranta">Antti P. Eloranta</name></author><author><name sortKey="Siwertsson, Anna" sort="Siwertsson, Anna" uniqKey="Siwertsson A" first="Anna" last="Siwertsson">Anna Siwertsson</name></author><author><name sortKey="Knudsen, Rune" sort="Knudsen, Rune" uniqKey="Knudsen R" first="Rune" last="Knudsen">Rune Knudsen</name></author><author><name sortKey="Amundsen, Per Rne" sort="Amundsen, Per Rne" uniqKey="Amundsen P" first="Per-Arne" last="Amundsen">Per-Arne Amundsen</name></author></titleStmt><publicationStmt><idno type="wicri:source">ISTEX</idno><idno type="RBID">ISTEX:56F3B9BB5C4B94A4F55B6D7C0A0A35AE96592AEE</idno><date when="2011" year="2011">2011</date><idno type="doi">10.1111/j.1600-0633.2011.00504.x</idno><idno type="url">https://api.istex.fr/document/56F3B9BB5C4B94A4F55B6D7C0A0A35AE96592AEE/fulltext/pdf</idno><idno type="wicri:Area/Istex/Corpus">000200</idno><idno type="wicri:Area/Istex/Curation">000200</idno><idno type="wicri:Area/Istex/Checkpoint">000110</idno><idno type="wicri:explorRef" wicri:stream="Istex" wicri:step="Checkpoint">000110</idno><idno type="wicri:doubleKey">0906-6691:2011:Eloranta A:dietary:plasticity:of</idno><idno type="wicri:Area/Main/Merge">000344</idno><idno type="wicri:Area/Main/Curation">000341</idno><idno type="wicri:Area/Main/Exploration">000341</idno></publicationStmt><sourceDesc><biblStruct><analytic><title level="a" type="main" xml:lang="en">Dietary plasticity of Arctic charr (Salvelinus alpinus) facilitates coexistence with competitively superior European whitefish (Coregonus lavaretus)</title><author><name sortKey="Eloranta, Antti P" sort="Eloranta, Antti P" uniqKey="Eloranta A" first="Antti P." last="Eloranta">Antti P. Eloranta</name><affiliation wicri:level="4"><country xml:lang="fr">Finlande</country><wicri:regionArea>Department of Biological and Environmental Sciences, University of Jyväskylä, Jyväskylä</wicri:regionArea><orgName type="university">Université de Jyväskylä</orgName><placeName><settlement type="city">Jyväskylä</settlement><region type="région" nuts="2">Finlande-Centrale</region></placeName></affiliation></author><author><name sortKey="Siwertsson, Anna" sort="Siwertsson, Anna" uniqKey="Siwertsson A" first="Anna" last="Siwertsson">Anna Siwertsson</name><affiliation wicri:level="1"><country xml:lang="fr">Norvège</country><wicri:regionArea>Department of Arctic and Marine Biology, Faculty of Biosciences, Fisheries and Economics, University of Tromsø, Tromsø</wicri:regionArea><wicri:noRegion>Tromsø</wicri:noRegion></affiliation></author><author><name sortKey="Knudsen, Rune" sort="Knudsen, Rune" uniqKey="Knudsen R" first="Rune" last="Knudsen">Rune Knudsen</name><affiliation wicri:level="1"><country xml:lang="fr">Norvège</country><wicri:regionArea>Department of Arctic and Marine Biology, Faculty of Biosciences, Fisheries and Economics, University of Tromsø, Tromsø</wicri:regionArea><wicri:noRegion>Tromsø</wicri:noRegion></affiliation></author><author><name sortKey="Amundsen, Per Rne" sort="Amundsen, Per Rne" uniqKey="Amundsen P" first="Per-Arne" last="Amundsen">Per-Arne Amundsen</name><affiliation wicri:level="1"><country xml:lang="fr">Norvège</country><wicri:regionArea>Department of Arctic and Marine Biology, Faculty of Biosciences, Fisheries and Economics, University of Tromsø, Tromsø</wicri:regionArea><wicri:noRegion>Tromsø</wicri:noRegion></affiliation></author></analytic><monogr></monogr><series><title level="j">Ecology of Freshwater Fish</title><idno type="ISSN">0906-6691</idno><idno type="eISSN">1600-0633</idno><imprint><publisher>Blackwell Publishing Ltd</publisher><pubPlace>Oxford, UK</pubPlace><date type="published" when="2011-12">2011-12</date><biblScope unit="volume">20</biblScope><biblScope unit="issue">4</biblScope><biblScope unit="page" from="558">558</biblScope><biblScope unit="page" to="568">568</biblScope></imprint><idno type="ISSN">0906-6691</idno></series><idno type="istex">56F3B9BB5C4B94A4F55B6D7C0A0A35AE96592AEE</idno><idno type="DOI">10.1111/j.1600-0633.2011.00504.x</idno><idno type="ArticleID">EFF504</idno></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0906-6691</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>diet</term><term>resource partitioning</term><term>stable isotope analysis</term><term>subarctic lakes</term><term>trophic niche</term></keywords></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Abstract – Habitat use and diet of Arctic charr (Salvelinus alpinus) coexisting with European whitefish (Coregonus lavaretus) and grayling (Thymallus thymallus) were studied in one deep and two relatively shallow subarctic lakes in northern Norway. Stomach content and stable isotope analyses revealed clear and temporally stable resource partitioning between the species in all three lakes. Arctic charr had a wide and flexible trophic niche and was the only piscivorous species. In contrast, whitefish and grayling had remarkably stable planktivorous and benthivorous niches, respectively. In the deepest lake, Arctic charr together with grayling mainly utilised littoral benthos, while piscivory was more prevalent in Arctic charr in the two shallower lakes. In one of the shallow lakes, whitefish was apparently relegated to the inferior profundal niche because of dominance of the littoral by grayling. Our results suggest that Arctic charr may not necessarily need an extensive profundal zone as a refuge, but can coexist with whitefish if a third competing fish species like grayling occurs in the littoral habitat or if profitable small prey fish are available. The study demonstrates that strong dietary plasticity of Arctic charr is instrumental in the observed coexistence with the commonly competitively superior whitefish.</div></front></TEI><affiliations><list><country><li>Finlande</li><li>Norvège</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="Eloranta, Antti P" sort="Eloranta, Antti P" uniqKey="Eloranta A" first="Antti P." last="Eloranta">Antti P. Eloranta</name></region></country><country name="Norvège"><noRegion><name sortKey="Siwertsson, Anna" sort="Siwertsson, Anna" uniqKey="Siwertsson A" first="Anna" last="Siwertsson">Anna Siwertsson</name></noRegion><name sortKey="Amundsen, Per Rne" sort="Amundsen, Per Rne" uniqKey="Amundsen P" first="Per-Arne" last="Amundsen">Per-Arne Amundsen</name><name sortKey="Knudsen, Rune" sort="Knudsen, Rune" uniqKey="Knudsen R" first="Rune" last="Knudsen">Rune Knudsen</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 000341 | SxmlIndent | more
Ou
HfdSelect -h $EXPLOR_AREA/Data/Main/Exploration/biblio.hfd -nk 000341 | 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:56F3B9BB5C4B94A4F55B6D7C0A0A35AE96592AEE
|texte= Dietary plasticity of Arctic charr (Salvelinus alpinus) facilitates coexistence with competitively superior European whitefish (Coregonus lavaretus)
}}
| This area was generated with Dilib version V0.6.39. |  |