Ecological and genetic differentiation among the Arctic charr of Lake Aigneau, Northern Québec
Identifieur interne : 000488 ( Istex/Corpus ); précédent : 000487; suivant : 000489Ecological and genetic differentiation among the Arctic charr of Lake Aigneau, Northern Québec
Auteurs : M. Power ; G. Power ; J. D. Reist ; R. BajnoSource :
- Ecology of Freshwater Fish [ 0906-6691 ] ; 2009-09.
English descriptors
Abstract
Abstract – Two modal size groups of sexually mature Arctic charr (Salvelinus alpinus) differing in shape and found at different depths in Lake Aigneau in the Canadian sub‐Arctic are described and tested for genetic and ecological differentiation. Forms consisted of a small littoral resident, mean size 21.7 cm, and a large profundal resident, mean size 53.9 cm. Mitochondrial DNA analysis indicated that seven of eight haplotypes were diagnostic for either the littoral or profundal fish, with 66.6% of the variation being found within form groupings. Pairwise tests of microsatellite data indicated significant differences in nine of 12 loci and a significant difference between the forms across all tested loci. Molecular variation was partitioned to 84.1% within and 15.9% between forms and suggestive of either restricted interbreeding over time or different allopatric origins. Stable isotope signatures were also significantly different, with the profundal fish having higher δ13C and δ15N values than the littoral fish. Overlap and separation, respectively, in the range of form δ13C and δ15N signatures indicated that carbon was obtained from similar sources, but that forms fed at different trophic levels. Littoral fish relied on aquatic insects, predominantly chironomids. Profundal fish were largely piscivorous, including cannibalism. Predominantly empty stomachs and low per cent nitrogen muscle‐tissue composition among profundal fish further indicated that the feeding activity was limited to the winter when ice‐cover increases the density of available prey at depth. Results provide evidence of significant differences between the modal groups, with origins in both genetics and ecology.
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DOI: 10.1111/j.1600-0633.2009.00362.x
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ISTEX:453556742B7B2DAE4F35B2D75AF2C618A15570DELe document en format XML
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Forms consisted of a small littoral resident, mean size 21.7 cm, and a large profundal resident, mean size 53.9 cm. Mitochondrial DNA analysis indicated that seven of eight haplotypes were diagnostic for either the littoral or profundal fish, with 66.6% of the variation being found within form groupings. Pairwise tests of microsatellite data indicated significant differences in nine of 12 loci and a significant difference between the forms across all tested loci. Molecular variation was partitioned to 84.1% within and 15.9% between forms and suggestive of either restricted interbreeding over time or different allopatric origins. Stable isotope signatures were also significantly different, with the profundal fish having higher δ13C and δ15N values than the littoral fish. Overlap and separation, respectively, in the range of form δ13C and δ15N signatures indicated that carbon was obtained from similar sources, but that forms fed at different trophic levels. Littoral fish relied on aquatic insects, predominantly chironomids. Profundal fish were largely piscivorous, including cannibalism. Predominantly empty stomachs and low per cent nitrogen muscle‐tissue composition among profundal fish further indicated that the feeding activity was limited to the winter when ice‐cover increases the density of available prey at depth. Results provide evidence of significant differences between the modal groups, with origins in both genetics and ecology.</div></front></TEI><istex><corpusName>wiley</corpusName><author><json:item><name>M. Power</name><affiliations><json:string>Department of Biology, University of Waterloo, Waterloo, ON, Canada</json:string></affiliations></json:item><json:item><name>G. Power</name><affiliations><json:string>Conestogo, ON, Canada</json:string></affiliations></json:item><json:item><name>J. D. 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D.</forename><surname>Reist</surname></persName><affiliation>Fisheries and Oceans Canada, Central and Arctic Region, 501 University Crescent, Winnipeg, MB, Canada</affiliation></author><author><persName><forename type="first">R.</forename><surname>Bajno</surname></persName><affiliation>Fisheries and Oceans Canada, Central and Arctic Region, 501 University Crescent, Winnipeg, MB, Canada</affiliation></author></analytic><monogr><title level="j">Ecology of Freshwater Fish</title><idno type="pISSN">0906-6691</idno><idno type="eISSN">1600-0633</idno><idno type="DOI">10.1111/(ISSN)1600-0633</idno><imprint><publisher>Blackwell Publishing Ltd</publisher><pubPlace>Oxford, UK</pubPlace><date type="published" when="2009-09"></date><biblScope unit="volume">18</biblScope><biblScope unit="issue">3</biblScope><biblScope unit="page" from="445">445</biblScope><biblScope unit="page" to="460">460</biblScope></imprint></monogr><idno type="istex">453556742B7B2DAE4F35B2D75AF2C618A15570DE</idno><idno type="DOI">10.1111/j.1600-0633.2009.00362.x</idno><idno type="ArticleID">EFF362</idno></biblStruct></sourceDesc></fileDesc><profileDesc><creation><date>2009</date></creation><langUsage><language ident="en">en</language></langUsage><abstract xml:lang="en"><p>Abstract – Two modal size groups of sexually mature Arctic charr (Salvelinus alpinus) differing in shape and found at different depths in Lake Aigneau in the Canadian sub‐Arctic are described and tested for genetic and ecological differentiation. Forms consisted of a small littoral resident, mean size 21.7 cm, and a large profundal resident, mean size 53.9 cm. Mitochondrial DNA analysis indicated that seven of eight haplotypes were diagnostic for either the littoral or profundal fish, with 66.6% of the variation being found within form groupings. Pairwise tests of microsatellite data indicated significant differences in nine of 12 loci and a significant difference between the forms across all tested loci. Molecular variation was partitioned to 84.1% within and 15.9% between forms and suggestive of either restricted interbreeding over time or different allopatric origins. Stable isotope signatures were also significantly different, with the profundal fish having higher δ13C and δ15N values than the littoral fish. Overlap and separation, respectively, in the range of form δ13C and δ15N signatures indicated that carbon was obtained from similar sources, but that forms fed at different trophic levels. Littoral fish relied on aquatic insects, predominantly chironomids. Profundal fish were largely piscivorous, including cannibalism. Predominantly empty stomachs and low per cent nitrogen muscle‐tissue composition among profundal fish further indicated that the feeding activity was limited to the winter when ice‐cover increases the density of available prey at depth. Results provide evidence of significant differences between the modal groups, with origins in both genetics and ecology.</p></abstract><textClass xml:lang="en"><keywords scheme="keyword"><list><head>Keywords</head><item><term>Arctic charr</term></item><item><term>stable isotope analysis</term></item><item><term>mtDNA</term></item><item><term>polymorphism</term></item><item><term>sympatry</term></item><item><term>microsatellites</term></item></list></keywords></textClass></profileDesc><revisionDesc><change when="2009-09">Published</change></revisionDesc></teiHeader></istex:fulltextTEI><json:item><original>false</original><mimetype>text/plain</mimetype><extension>txt</extension><uri>https://api.istex.fr/document/453556742B7B2DAE4F35B2D75AF2C618A15570DE/fulltext/txt</uri></json:item></fulltext><metadata><istex:metadataXml wicri:clean="Wiley, elements deleted: body"><istex:xmlDeclaration>version="1.0" encoding="UTF-8" standalone="yes"</istex:xmlDeclaration><istex:document><component version="2.0" type="serialArticle" xml:lang="en"><header><publicationMeta level="product"><publisherInfo><publisherName>Blackwell Publishing Ltd</publisherName><publisherLoc>Oxford, UK</publisherLoc></publisherInfo><doi origin="wiley" registered="yes">10.1111/(ISSN)1600-0633</doi><issn type="print">0906-6691</issn><issn type="electronic">1600-0633</issn><idGroup><id type="product" value="EFF"></id><id type="publisherDivision" value="ST"></id></idGroup><titleGroup><title type="main" sort="ECOLOGY OF FRESHWATER FISH">Ecology of Freshwater Fish</title></titleGroup></publicationMeta><publicationMeta level="part" position="09003"><doi origin="wiley">10.1111/eff.2009.18.issue-3</doi><numberingGroup><numbering type="journalVolume" number="18">18</numbering><numbering type="journalIssue" number="3">3</numbering></numberingGroup><coverDate startDate="2009-09">September 2009</coverDate></publicationMeta><publicationMeta level="unit" type="article" position="11" status="forIssue"><doi origin="wiley">10.1111/j.1600-0633.2009.00362.x</doi><idGroup><id type="unit" value="EFF362"></id></idGroup><countGroup><count type="pageTotal" number="16"></count></countGroup><titleGroup><title type="tocHeading1">Original articles</title></titleGroup><copyright>© 2009 John Wiley & Sons A/S</copyright><eventGroup><event type="firstOnline" date="2009-04-23"></event><event type="publishedOnlineFinalForm" date="2009-08-11"></event><event type="xmlConverted" agent="Converter:BPG_TO_WML3G version:2.3.2 mode:FullText source:FullText result:FullText" date="2010-03-06"></event><event type="xmlConverted" agent="Converter:WILEY_ML3G_TO_WILEY_ML3GV2 version:3.8.8" date="2014-01-24"></event><event type="xmlConverted" agent="Converter:WML3G_To_WML3G version:4.1.7 mode:FullText,remove_FC" date="2014-10-16"></event></eventGroup><numberingGroup><numbering type="pageFirst" number="445">445</numbering><numbering type="pageLast" number="460">460</numbering></numberingGroup><correspondenceTo>M. Power, Department of Biology, University of Waterloo, Waterloo, ON, Canada, N2L 3G1; e‐mail: <email>m3power@sciborg.uwaterloo.ca</email></correspondenceTo><linkGroup><link type="toTypesetVersion" href="file:EFF.EFF362.pdf"></link></linkGroup></publicationMeta><contentMeta><unparsedEditorialHistory>Accepted for publication February 23, 2009</unparsedEditorialHistory><countGroup><count type="figureTotal" number="5"></count><count type="tableTotal" number="7"></count></countGroup><titleGroup><title type="main">Ecological and genetic differentiation among the Arctic charr of Lake Aigneau, Northern Québec</title><title type="shortAuthors"><b>Power et al.</b></title><title type="short"><b>Ecological and genetic differentiation in Arctic charr</b></title></titleGroup><creators><creator creatorRole="author" xml:id="cr1" affiliationRef="#a1"><personName><givenNames>M.</givenNames><familyName>Power</familyName></personName></creator><creator creatorRole="author" xml:id="cr2" affiliationRef="#a2"><personName><givenNames>G.</givenNames><familyName>Power</familyName></personName></creator><creator creatorRole="author" xml:id="cr3" affiliationRef="#a3"><personName><givenNames>J. D.</givenNames><familyName>Reist</familyName></personName></creator><creator creatorRole="author" xml:id="cr4" affiliationRef="#a3"><personName><givenNames>R.</givenNames><familyName>Bajno</familyName></personName></creator></creators><affiliationGroup><affiliation xml:id="a1" countryCode="CA"><unparsedAffiliation>Department of Biology, University of Waterloo, Waterloo, ON, Canada</unparsedAffiliation></affiliation><affiliation xml:id="a2"><unparsedAffiliation>Conestogo, ON, Canada</unparsedAffiliation></affiliation><affiliation xml:id="a3" countryCode="CA"><unparsedAffiliation>Fisheries and Oceans Canada, Central and Arctic Region, 501 University Crescent, Winnipeg, MB, Canada</unparsedAffiliation></affiliation></affiliationGroup><keywordGroup xml:lang="en"><keyword xml:id="k1">Arctic charr</keyword><keyword xml:id="k2">stable isotope analysis</keyword><keyword xml:id="k3">mtDNA</keyword><keyword xml:id="k4">polymorphism</keyword><keyword xml:id="k5">sympatry</keyword><keyword xml:id="k6">microsatellites</keyword></keywordGroup><abstractGroup><abstract type="main" xml:lang="en"><!-- Power M, Power G, Reist JD, Bajno R. Ecological and genetic differentiation among the Arctic charr of Lake Aigneau, Northern Québec.
Ecology of Freshwater Fish 2009: 18: 445–460. © 2009 John Wiley & Sons A/S --><p><b>Abstract – </b> Two modal size groups of sexually mature Arctic charr (<i>Salvelinus alpinus</i>) differing in shape and found at different depths in Lake Aigneau in the Canadian sub‐Arctic are described and tested for genetic and ecological differentiation. Forms consisted of a small littoral resident, mean size 21.7 cm, and a large profundal resident, mean size 53.9 cm. Mitochondrial DNA analysis indicated that seven of eight haplotypes were diagnostic for either the littoral or profundal fish, with 66.6% of the variation being found within form groupings. Pairwise tests of microsatellite data indicated significant differences in nine of 12 loci and a significant difference between the forms across all tested loci. Molecular variation was partitioned to 84.1% within and 15.9% between forms and suggestive of either restricted interbreeding over time or different allopatric origins. Stable isotope signatures were also significantly different, with the profundal fish having higher δ<sup>13</sup>C and δ<sup>15</sup>N values than the littoral fish. Overlap and separation, respectively, in the range of form δ<sup>13</sup>C and δ<sup>15</sup>N signatures indicated that carbon was obtained from similar sources, but that forms fed at different trophic levels. Littoral fish relied on aquatic insects, predominantly chironomids. Profundal fish were largely piscivorous, including cannibalism. Predominantly empty stomachs and low per cent nitrogen muscle‐tissue composition among profundal fish further indicated that the feeding activity was limited to the winter when ice‐cover increases the density of available prey at depth. Results provide evidence of significant differences between the modal groups, with origins in both genetics and ecology.</p></abstract></abstractGroup></contentMeta></header></component></istex:document></istex:metadataXml><mods version="3.6"><titleInfo lang="en"><title>Ecological and genetic differentiation among the Arctic charr of Lake Aigneau, Northern Québec</title></titleInfo><titleInfo type="abbreviated"><title>Ecological and genetic differentiation in Arctic charr</title></titleInfo><titleInfo type="alternative" contentType="CDATA" lang="en"><title>Ecological and genetic differentiation among the Arctic charr of Lake Aigneau, Northern Québec</title></titleInfo><name type="personal"><namePart type="given">M.</namePart><namePart type="family">Power</namePart><affiliation>Department of Biology, University of Waterloo, Waterloo, ON, Canada</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">G.</namePart><namePart type="family">Power</namePart><affiliation>Conestogo, ON, Canada</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">J. D.</namePart><namePart type="family">Reist</namePart><affiliation>Fisheries and Oceans Canada, Central and Arctic Region, 501 University Crescent, Winnipeg, MB, Canada</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">R.</namePart><namePart type="family">Bajno</namePart><affiliation>Fisheries and Oceans Canada, Central and Arctic Region, 501 University Crescent, Winnipeg, MB, Canada</affiliation><role><roleTerm type="text">author</roleTerm></role></name><typeOfResource>text</typeOfResource><genre type="article">article</genre><originInfo><publisher>Blackwell Publishing Ltd</publisher><place><placeTerm type="text">Oxford, UK</placeTerm></place><dateIssued encoding="w3cdtf">2009-09</dateIssued><edition>Accepted for publication February 23, 2009</edition><copyrightDate encoding="w3cdtf">2009</copyrightDate></originInfo><language><languageTerm type="code" authority="rfc3066">en</languageTerm><languageTerm type="code" authority="iso639-2b">eng</languageTerm></language><physicalDescription><internetMediaType>text/html</internetMediaType><extent unit="figures">5</extent><extent unit="tables">7</extent></physicalDescription><abstract lang="en">Abstract – Two modal size groups of sexually mature Arctic charr (Salvelinus alpinus) differing in shape and found at different depths in Lake Aigneau in the Canadian sub‐Arctic are described and tested for genetic and ecological differentiation. Forms consisted of a small littoral resident, mean size 21.7 cm, and a large profundal resident, mean size 53.9 cm. Mitochondrial DNA analysis indicated that seven of eight haplotypes were diagnostic for either the littoral or profundal fish, with 66.6% of the variation being found within form groupings. Pairwise tests of microsatellite data indicated significant differences in nine of 12 loci and a significant difference between the forms across all tested loci. Molecular variation was partitioned to 84.1% within and 15.9% between forms and suggestive of either restricted interbreeding over time or different allopatric origins. Stable isotope signatures were also significantly different, with the profundal fish having higher δ13C and δ15N values than the littoral fish. Overlap and separation, respectively, in the range of form δ13C and δ15N signatures indicated that carbon was obtained from similar sources, but that forms fed at different trophic levels. Littoral fish relied on aquatic insects, predominantly chironomids. Profundal fish were largely piscivorous, including cannibalism. Predominantly empty stomachs and low per cent nitrogen muscle‐tissue composition among profundal fish further indicated that the feeding activity was limited to the winter when ice‐cover increases the density of available prey at depth. Results provide evidence of significant differences between the modal groups, with origins in both genetics and ecology.</abstract><subject lang="en"><genre>Keywords</genre><topic>Arctic charr</topic><topic>stable isotope analysis</topic><topic>mtDNA</topic><topic>polymorphism</topic><topic>sympatry</topic><topic>microsatellites</topic></subject><relatedItem type="host"><titleInfo><title>Ecology of Freshwater Fish</title></titleInfo><identifier type="ISSN">0906-6691</identifier><identifier type="eISSN">1600-0633</identifier><identifier type="DOI">10.1111/(ISSN)1600-0633</identifier><identifier type="PublisherID">EFF</identifier><part><date>2009</date><detail type="volume"><caption>vol.</caption><number>18</number></detail><detail type="issue"><caption>no.</caption><number>3</number></detail><extent unit="pages"><start>445</start><end>460</end><total>16</total></extent></part></relatedItem><identifier type="istex">453556742B7B2DAE4F35B2D75AF2C618A15570DE</identifier><identifier type="DOI">10.1111/j.1600-0633.2009.00362.x</identifier><identifier type="ArticleID">EFF362</identifier><accessCondition type="use and reproduction" contentType="copyright">© 2009 John Wiley & Sons A/S</accessCondition><recordInfo><recordOrigin>Blackwell Publishing Ltd</recordOrigin><recordContentSource>WILEY</recordContentSource></recordInfo></mods></metadata><serie></serie></istex></record>Pour manipuler ce document sous Unix (Dilib)
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|clé= ISTEX:453556742B7B2DAE4F35B2D75AF2C618A15570DE
|texte= Ecological and genetic differentiation among the Arctic charr of Lake Aigneau, Northern Québec
}}
| This area was generated with Dilib version V0.6.39. |  |