Isolation by distance and selection effects on genetic structure of sardines Sardina pilchardus Walbaum
Identifieur interne : 000C91 ( Istex/Corpus ); précédent : 000C90; suivant : 000C92Isolation by distance and selection effects on genetic structure of sardines Sardina pilchardus Walbaum
Auteurs : V. Laurent ; B. Caneco ; A. Magoulas ; S. PlanesSource :
- Journal of Fish Biology [ 0022-1112 ] ; 2007-08.
English descriptors
Abstract
Allozyme data were used to analyse the genetic structure of Sardina pilchardus populations. Fifty samples from 15 locations between the North Sea and Mauritania, including samples from the Azores, Madeira and the Mediterranean Sea, were surveyed. A weak but significant structure was found between all samples (FST= 0.057, P < 0·001). This structure results from a change in the most common allele of SOD* between the North African and the Azores populations separated by the greatest distance. This locus seemed to be under selective pressure according to the test of neutrality, and the variations in allele frequencies may be explained due to isolation by distance (IBD) of coastal populations (from Mauritania to the North Sea) (r= 0·86, P < 0·001). When SOD* was removed from the analyses, IBD was not observed in coastal populations (r= 0·236, P > 0·05) but was observed over the whole range (r= 0·321, P= 0·05). The genetic structure of S. pilchardus is driven by both IBD and selective processes.
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DOI: 10.1111/j.1095-8649.2007.01450.x
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ISTEX:310F12BAA233D4D1793BE6A632BA5BB16C28D865Le document en format XML
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Caneco</name><affiliation><mods:affiliation>* Ecole Pratique des Hautes Etudes – UMR CNRS 8046, Laboratoire d’Ichtyoécologie Tropicale et Méditerranéenne, Université de Perpignan, 52, Avenue Paul Alduy, 66860 Perpignan cedex, France , † IPIMAR, Av. Brasília, 1449‐006 Lisbon, Portugal and ‡ Hellenic Centre for Marine Research, Crete, P. O. Box 2214, Heraklion 71003, Crete, Greece</mods:affiliation></affiliation></author><author><name sortKey="Magoulas, A" sort="Magoulas, A" uniqKey="Magoulas A" first="A." last="Magoulas">A. Magoulas</name><affiliation><mods:affiliation>* Ecole Pratique des Hautes Etudes – UMR CNRS 8046, Laboratoire d’Ichtyoécologie Tropicale et Méditerranéenne, Université de Perpignan, 52, Avenue Paul Alduy, 66860 Perpignan cedex, France , † IPIMAR, Av. Brasília, 1449‐006 Lisbon, Portugal and ‡ Hellenic Centre for Marine Research, Crete, P. O. 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Laurent</name><affiliation><mods:affiliation>* Ecole Pratique des Hautes Etudes – UMR CNRS 8046, Laboratoire d’Ichtyoécologie Tropicale et Méditerranéenne, Université de Perpignan, 52, Avenue Paul Alduy, 66860 Perpignan cedex, France , † IPIMAR, Av. Brasília, 1449‐006 Lisbon, Portugal and ‡ Hellenic Centre for Marine Research, Crete, P. O. Box 2214, Heraklion 71003, Crete, Greece</mods:affiliation></affiliation></author><author><name sortKey="Caneco, B" sort="Caneco, B" uniqKey="Caneco B" first="B." last="Caneco">B. Caneco</name><affiliation><mods:affiliation>* Ecole Pratique des Hautes Etudes – UMR CNRS 8046, Laboratoire d’Ichtyoécologie Tropicale et Méditerranéenne, Université de Perpignan, 52, Avenue Paul Alduy, 66860 Perpignan cedex, France , † IPIMAR, Av. Brasília, 1449‐006 Lisbon, Portugal and ‡ Hellenic Centre for Marine Research, Crete, P. O. Box 2214, Heraklion 71003, Crete, Greece</mods:affiliation></affiliation></author><author><name sortKey="Magoulas, A" sort="Magoulas, A" uniqKey="Magoulas A" first="A." last="Magoulas">A. Magoulas</name><affiliation><mods:affiliation>* Ecole Pratique des Hautes Etudes – UMR CNRS 8046, Laboratoire d’Ichtyoécologie Tropicale et Méditerranéenne, Université de Perpignan, 52, Avenue Paul Alduy, 66860 Perpignan cedex, France , † IPIMAR, Av. Brasília, 1449‐006 Lisbon, Portugal and ‡ Hellenic Centre for Marine Research, Crete, P. O. Box 2214, Heraklion 71003, Crete, Greece</mods:affiliation></affiliation></author><author><name sortKey="Planes, S" sort="Planes, S" uniqKey="Planes S" first="S." last="Planes">S. Planes</name><affiliation><mods:affiliation>* Ecole Pratique des Hautes Etudes – UMR CNRS 8046, Laboratoire d’Ichtyoécologie Tropicale et Méditerranéenne, Université de Perpignan, 52, Avenue Paul Alduy, 66860 Perpignan cedex, France , † IPIMAR, Av. Brasília, 1449‐006 Lisbon, Portugal and ‡ Hellenic Centre for Marine Research, Crete, P. O. Box 2214, Heraklion 71003, Crete, Greece</mods:affiliation></affiliation><affiliation><mods:affiliation>E-mail: planes@univ‐perp.fr</mods:affiliation></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="2007-08">2007-08</date><biblScope unit="volume">71</biblScope><biblScope unit="supplement">sa</biblScope><biblScope unit="page" from="1">1</biblScope><biblScope unit="page" to="17">17</biblScope></imprint><idno type="ISSN">0022-1112</idno></series><idno type="istex">310F12BAA233D4D1793BE6A632BA5BB16C28D865</idno><idno type="DOI">10.1111/j.1095-8649.2007.01450.x</idno><idno type="ArticleID">JFB1450</idno></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0022-1112</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>European sardine</term><term>SOD* locus</term><term>allozyme</term><term>pelagic fishes</term><term>population genetics</term><term>whole range</term></keywords></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Allozyme data were used to analyse the genetic structure of Sardina pilchardus populations. Fifty samples from 15 locations between the North Sea and Mauritania, including samples from the Azores, Madeira and the Mediterranean Sea, were surveyed. A weak but significant structure was found between all samples (FST= 0.057, P < 0·001). This structure results from a change in the most common allele of SOD* between the North African and the Azores populations separated by the greatest distance. This locus seemed to be under selective pressure according to the test of neutrality, and the variations in allele frequencies may be explained due to isolation by distance (IBD) of coastal populations (from Mauritania to the North Sea) (r= 0·86, P < 0·001). When SOD* was removed from the analyses, IBD was not observed in coastal populations (r= 0·236, P > 0·05) but was observed over the whole range (r= 0·321, P= 0·05). The genetic structure of S. pilchardus is driven by both IBD and selective processes.</div></front></TEI><istex><corpusName>wiley</corpusName><author><json:item><name>V. Laurent</name><affiliations><json:string>* Ecole Pratique des Hautes Etudes – UMR CNRS 8046, Laboratoire d’Ichtyoécologie Tropicale et Méditerranéenne, Université de Perpignan, 52, Avenue Paul Alduy, 66860 Perpignan cedex, France , † IPIMAR, Av. Brasília, 1449‐006 Lisbon, Portugal and ‡ Hellenic Centre for Marine Research, Crete, P. O. Box 2214, Heraklion 71003, Crete, Greece</json:string></affiliations></json:item><json:item><name>B. Caneco</name><affiliations><json:string>* Ecole Pratique des Hautes Etudes – UMR CNRS 8046, Laboratoire d’Ichtyoécologie Tropicale et Méditerranéenne, Université de Perpignan, 52, Avenue Paul Alduy, 66860 Perpignan cedex, France , † IPIMAR, Av. Brasília, 1449‐006 Lisbon, Portugal and ‡ Hellenic Centre for Marine Research, Crete, P. O. Box 2214, Heraklion 71003, Crete, Greece</json:string></affiliations></json:item><json:item><name>A. Magoulas</name><affiliations><json:string>* Ecole Pratique des Hautes Etudes – UMR CNRS 8046, Laboratoire d’Ichtyoécologie Tropicale et Méditerranéenne, Université de Perpignan, 52, Avenue Paul Alduy, 66860 Perpignan cedex, France , † IPIMAR, Av. Brasília, 1449‐006 Lisbon, Portugal and ‡ Hellenic Centre for Marine Research, Crete, P. O. Box 2214, Heraklion 71003, Crete, Greece</json:string></affiliations></json:item><json:item><name>S. Planes</name><affiliations><json:string>* Ecole Pratique des Hautes Etudes – UMR CNRS 8046, Laboratoire d’Ichtyoécologie Tropicale et Méditerranéenne, Université de Perpignan, 52, Avenue Paul Alduy, 66860 Perpignan cedex, France , † IPIMAR, Av. Brasília, 1449‐006 Lisbon, Portugal and ‡ Hellenic Centre for Marine Research, Crete, P. O. Box 2214, Heraklion 71003, Crete, Greece</json:string><json:string>E-mail: planes@univ‐perp.fr</json:string></affiliations></json:item></author><subject><json:item><lang><json:string>eng</json:string></lang><value>allozyme</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>European sardine</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>pelagic fishes</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>population genetics</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>SOD* locus</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>whole range</value></json:item></subject><articleId><json:string>JFB1450</json:string></articleId><language><json:string>eng</json:string></language><originalGenre><json:string>article</json:string></originalGenre><abstract>Allozyme data were used to analyse the genetic structure of Sardina pilchardus populations. Fifty samples from 15 locations between the North Sea and Mauritania, including samples from the Azores, Madeira and the Mediterranean Sea, were surveyed. A weak but significant structure was found between all samples (FST= 0.057, P > 0·001). This structure results from a change in the most common allele of SOD* between the North African and the Azores populations separated by the greatest distance. This locus seemed to be under selective pressure according to the test of neutrality, and the variations in allele frequencies may be explained due to isolation by distance (IBD) of coastal populations (from Mauritania to the North Sea) (r= 0·86, P > 0·001). When SOD* was removed from the analyses, IBD was not observed in coastal populations (r= 0·236, P > 0·05) but was observed over the whole range (r= 0·321, P= 0·05). 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Brasília, 1449‐006 Lisbon, Portugal and ‡ Hellenic Centre for Marine Research, Crete, P. O. Box 2214, Heraklion 71003, Crete, Greece</affiliation></author><author xml:id="author-2"><persName><forename type="first">B.</forename><surname>Caneco</surname></persName><affiliation>* Ecole Pratique des Hautes Etudes – UMR CNRS 8046, Laboratoire d’Ichtyoécologie Tropicale et Méditerranéenne, Université de Perpignan, 52, Avenue Paul Alduy, 66860 Perpignan cedex, France , † IPIMAR, Av. Brasília, 1449‐006 Lisbon, Portugal and ‡ Hellenic Centre for Marine Research, Crete, P. O. Box 2214, Heraklion 71003, Crete, Greece</affiliation></author><author xml:id="author-3"><persName><forename type="first">A.</forename><surname>Magoulas</surname></persName><affiliation>* Ecole Pratique des Hautes Etudes – UMR CNRS 8046, Laboratoire d’Ichtyoécologie Tropicale et Méditerranéenne, Université de Perpignan, 52, Avenue Paul Alduy, 66860 Perpignan cedex, France , † IPIMAR, Av. Brasília, 1449‐006 Lisbon, Portugal and ‡ Hellenic Centre for Marine Research, Crete, P. O. Box 2214, Heraklion 71003, Crete, Greece</affiliation></author><author xml:id="author-4"><persName><forename type="first">S.</forename><surname>Planes</surname></persName><email>planes@univ‐perp.fr</email><affiliation>* Ecole Pratique des Hautes Etudes – UMR CNRS 8046, Laboratoire d’Ichtyoécologie Tropicale et Méditerranéenne, Université de Perpignan, 52, Avenue Paul Alduy, 66860 Perpignan cedex, France , † IPIMAR, Av. Brasília, 1449‐006 Lisbon, Portugal and ‡ Hellenic Centre for Marine Research, Crete, P. O. Box 2214, Heraklion 71003, Crete, Greece</affiliation></author></analytic><monogr><title level="j">Journal of Fish Biology</title><idno type="pISSN">0022-1112</idno><idno type="eISSN">1095-8649</idno><idno type="DOI">10.1111/(ISSN)1095-8649</idno><imprint><publisher>Blackwell Publishing Ltd</publisher><pubPlace>Oxford, UK</pubPlace><date type="published" when="2007-08"></date><biblScope unit="volume">71</biblScope><biblScope unit="supplement">sa</biblScope><biblScope unit="page" from="1">1</biblScope><biblScope unit="page" to="17">17</biblScope></imprint></monogr><idno type="istex">310F12BAA233D4D1793BE6A632BA5BB16C28D865</idno><idno type="DOI">10.1111/j.1095-8649.2007.01450.x</idno><idno type="ArticleID">JFB1450</idno></biblStruct></sourceDesc></fileDesc><profileDesc><creation><date>2007</date></creation><langUsage><language ident="en">en</language></langUsage><abstract xml:lang="en"><p>Allozyme data were used to analyse the genetic structure of Sardina pilchardus populations. Fifty samples from 15 locations between the North Sea and Mauritania, including samples from the Azores, Madeira and the Mediterranean Sea, were surveyed. A weak but significant structure was found between all samples (FST= 0.057, P < 0·001). This structure results from a change in the most common allele of SOD* between the North African and the Azores populations separated by the greatest distance. This locus seemed to be under selective pressure according to the test of neutrality, and the variations in allele frequencies may be explained due to isolation by distance (IBD) of coastal populations (from Mauritania to the North Sea) (r= 0·86, P < 0·001). When SOD* was removed from the analyses, IBD was not observed in coastal populations (r= 0·236, P > 0·05) but was observed over the whole range (r= 0·321, P= 0·05). The genetic structure of S. pilchardus is driven by both IBD and selective processes.</p></abstract><textClass xml:lang="en"><keywords scheme="keyword"><list><head>keywords</head><item><term>allozyme</term></item><item><term>European sardine</term></item><item><term>pelagic fishes</term></item><item><term>population genetics</term></item><item><term>SOD* locus</term></item><item><term>whole range</term></item></list></keywords></textClass></profileDesc><revisionDesc><change when="2007-08">Published</change></revisionDesc></teiHeader></istex:fulltextTEI><json:item><extension>txt</extension><original>false</original><mimetype>text/plain</mimetype><uri>https://api.istex.fr/document/310F12BAA233D4D1793BE6A632BA5BB16C28D865/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)1095-8649</doi><issn type="print">0022-1112</issn><issn type="electronic">1095-8649</issn><idGroup><id type="product" value="JFB"></id><id type="publisherDivision" value="ST"></id></idGroup><titleGroup><title type="main" sort="JOURNAL OF FISH BIOLOGY">Journal of Fish Biology</title></titleGroup></publicationMeta><publicationMeta level="part" position="08000"><doi origin="wiley">10.1111/jfb.2007.71.issue-sa</doi><numberingGroup><numbering type="journalVolume" number="71">71</numbering><numbering type="supplement">sa</numbering></numberingGroup><coverDate startDate="2007-08">August 2007</coverDate></publicationMeta><publicationMeta level="unit" type="article" position="1" status="forIssue"><doi origin="wiley">10.1111/j.1095-8649.2007.01450.x</doi><idGroup><id type="unit" value="JFB1450"></id></idGroup><countGroup><count type="pageTotal" number="17"></count></countGroup><titleGroup><title type="tocHeading1">REGULAR PAPERS</title></titleGroup><copyright>2007 The Fisheries Society of the British Isles</copyright><eventGroup><event type="firstOnline" date="2007-07-20"></event><event type="publishedOnlineFinalForm" date="2007-07-20"></event><event type="xmlConverted" agent="Converter:BPG_TO_WML3G version:2.3.2 mode:FullText source:HeaderRef result:HeaderRef" date="2010-02-28"></event><event type="xmlConverted" agent="Converter:WILEY_ML3G_TO_WILEY_ML3GV2 version:3.8.8" date="2014-01-30"></event><event type="xmlConverted" agent="Converter:WML3G_To_WML3G version:4.1.7 mode:FullText,remove_FC" date="2014-10-30"></event></eventGroup><numberingGroup><numbering type="pageFirst" number="1">1</numbering><numbering type="pageLast" number="17">17</numbering></numberingGroup><correspondenceTo> §Tel.: +33 4 68 66 20 55; fax: +33 4 68 50 36 86; email: <email normalForm="planes@univ-perp.fr">planes@univ‐perp.fr</email></correspondenceTo><objectNameGroup><objectName elementName="appendix">Appendix</objectName></objectNameGroup><linkGroup><link type="toTypesetVersion" href="file:JFB.JFB1450.pdf"></link></linkGroup></publicationMeta><contentMeta><unparsedEditorialHistory>(Received 14 November 2005, Accepted 10 January 2007)</unparsedEditorialHistory><countGroup><count type="figureTotal" number="4"></count><count type="tableTotal" number="2"></count><count type="formulaTotal" number="0"></count><count type="referenceTotal" number="66"></count><count type="wordTotal" number="0"></count><count type="linksPubMed" number="0"></count><count type="linksCrossRef" number="0"></count></countGroup><titleGroup><title type="main">Isolation by distance and selection effects on genetic structure of sardines <i>Sardina pilchardus</i> Walbaum</title></titleGroup><creators><creator creatorRole="author" xml:id="cr1" affiliationRef="#aff-1-1"><personName><givenNames>V.</givenNames><familyName>Laurent</familyName></personName></creator><creator creatorRole="author" xml:id="cr2" affiliationRef="#aff-1-1"><personName><givenNames>B.</givenNames><familyName>Caneco</familyName></personName></creator><creator creatorRole="author" xml:id="cr3" affiliationRef="#aff-1-1"><personName><givenNames>A.</givenNames><familyName>Magoulas</familyName></personName></creator><creator creatorRole="author" xml:id="cr4" affiliationRef="#aff-1-1" corresponding="yes"><personName><givenNames>S.</givenNames><familyName>Planes</familyName></personName></creator></creators><affiliationGroup><affiliation xml:id="aff-1-1"><unparsedAffiliation> * <i>Ecole Pratique des Hautes Etudes – UMR CNRS 8046, Laboratoire d’Ichtyoécologie Tropicale et Méditerranéenne, Université de Perpignan, 52, Avenue Paul Alduy, 66860 Perpignan cedex, France</i><i>, </i> † <i>IPIMAR, Av. Brasília, 1449‐006 Lisbon, Portugal</i><i> and </i> ‡ <i>Hellenic Centre for Marine Research, Crete, P. O. Box 2214, Heraklion 71003, Crete, Greece</i></unparsedAffiliation></affiliation></affiliationGroup><keywordGroup xml:lang="en"><keyword xml:id="k1">allozyme</keyword><keyword xml:id="k2">European sardine</keyword><keyword xml:id="k3">pelagic fishes</keyword><keyword xml:id="k4">population genetics</keyword><keyword xml:id="k5"><i>SOD*</i> locus</keyword><keyword xml:id="k6">whole range</keyword></keywordGroup><abstractGroup><abstract type="main" xml:lang="en"><p>Allozyme data were used to analyse the genetic structure of <i>Sardina pilchardus</i> populations. Fifty samples from 15 locations between the North Sea and Mauritania, including samples from the Azores, Madeira and the Mediterranean Sea, were surveyed. A weak but significant structure was found between all samples (<i>F</i><sub>ST</sub>= 0.057, <i>P</i> < 0·001). This structure results from a change in the most common allele of <i>SOD*</i> between the North African and the Azores populations separated by the greatest distance. This locus seemed to be under selective pressure according to the test of neutrality, and the variations in allele frequencies may be explained due to isolation by distance (IBD) of coastal populations (from Mauritania to the North Sea) (<i>r</i>= 0·86, <i>P</i> < 0·001). When <i>SOD*</i> was removed from the analyses, IBD was not observed in coastal populations (<i>r</i>= 0·236, <i>P</i> > 0·05) but was observed over the whole range (<i>r</i>= 0·321, <i>P</i>= 0·05). The genetic structure of <i>S. pilchardus</i> is driven by both IBD and selective processes.</p></abstract></abstractGroup></contentMeta></header></component></istex:document></istex:metadataXml><mods version="3.6"><titleInfo lang="en"><title>Isolation by distance and selection effects on genetic structure of sardines Sardina pilchardus Walbaum</title></titleInfo><titleInfo type="alternative" contentType="CDATA" lang="en"><title>Isolation by distance and selection effects on genetic structure of sardines Sardina pilchardus Walbaum</title></titleInfo><name type="personal"><namePart type="given">V.</namePart><namePart type="family">Laurent</namePart><affiliation>* Ecole Pratique des Hautes Etudes – UMR CNRS 8046, Laboratoire d’Ichtyoécologie Tropicale et Méditerranéenne, Université de Perpignan, 52, Avenue Paul Alduy, 66860 Perpignan cedex, France , † IPIMAR, Av. Brasília, 1449‐006 Lisbon, Portugal and ‡ Hellenic Centre for Marine Research, Crete, P. O. Box 2214, Heraklion 71003, Crete, Greece</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">B.</namePart><namePart type="family">Caneco</namePart><affiliation>* Ecole Pratique des Hautes Etudes – UMR CNRS 8046, Laboratoire d’Ichtyoécologie Tropicale et Méditerranéenne, Université de Perpignan, 52, Avenue Paul Alduy, 66860 Perpignan cedex, France , † IPIMAR, Av. Brasília, 1449‐006 Lisbon, Portugal and ‡ Hellenic Centre for Marine Research, Crete, P. O. Box 2214, Heraklion 71003, Crete, Greece</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">A.</namePart><namePart type="family">Magoulas</namePart><affiliation>* Ecole Pratique des Hautes Etudes – UMR CNRS 8046, Laboratoire d’Ichtyoécologie Tropicale et Méditerranéenne, Université de Perpignan, 52, Avenue Paul Alduy, 66860 Perpignan cedex, France , † IPIMAR, Av. Brasília, 1449‐006 Lisbon, Portugal and ‡ Hellenic Centre for Marine Research, Crete, P. O. Box 2214, Heraklion 71003, Crete, Greece</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">S.</namePart><namePart type="family">Planes</namePart><affiliation>* Ecole Pratique des Hautes Etudes – UMR CNRS 8046, Laboratoire d’Ichtyoécologie Tropicale et Méditerranéenne, Université de Perpignan, 52, Avenue Paul Alduy, 66860 Perpignan cedex, France , † IPIMAR, Av. Brasília, 1449‐006 Lisbon, Portugal and ‡ Hellenic Centre for Marine Research, Crete, P. O. Box 2214, Heraklion 71003, Crete, Greece</affiliation><affiliation>E-mail: planes@univ‐perp.fr</affiliation><role><roleTerm type="text">author</roleTerm></role></name><typeOfResource>text</typeOfResource><genre type="article" displayLabel="article"></genre><originInfo><publisher>Blackwell Publishing Ltd</publisher><place><placeTerm type="text">Oxford, UK</placeTerm></place><dateIssued encoding="w3cdtf">2007-08</dateIssued><edition>(Received 14 November 2005, Accepted 10 January 2007)</edition><copyrightDate encoding="w3cdtf">2007</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">4</extent><extent unit="tables">2</extent><extent unit="references">66</extent></physicalDescription><abstract lang="en">Allozyme data were used to analyse the genetic structure of Sardina pilchardus populations. Fifty samples from 15 locations between the North Sea and Mauritania, including samples from the Azores, Madeira and the Mediterranean Sea, were surveyed. A weak but significant structure was found between all samples (FST= 0.057, P < 0·001). This structure results from a change in the most common allele of SOD* between the North African and the Azores populations separated by the greatest distance. This locus seemed to be under selective pressure according to the test of neutrality, and the variations in allele frequencies may be explained due to isolation by distance (IBD) of coastal populations (from Mauritania to the North Sea) (r= 0·86, P < 0·001). When SOD* was removed from the analyses, IBD was not observed in coastal populations (r= 0·236, P > 0·05) but was observed over the whole range (r= 0·321, P= 0·05). The genetic structure of S. pilchardus is driven by both IBD and selective processes.</abstract><subject lang="en"><genre>keywords</genre><topic>allozyme</topic><topic>European sardine</topic><topic>pelagic fishes</topic><topic>population genetics</topic><topic>SOD* locus</topic><topic>whole range</topic></subject><relatedItem type="host"><titleInfo><title>Journal of Fish Biology</title></titleInfo><genre type="journal">journal</genre><identifier type="ISSN">0022-1112</identifier><identifier type="eISSN">1095-8649</identifier><identifier type="DOI">10.1111/(ISSN)1095-8649</identifier><identifier type="PublisherID">JFB</identifier><part><date>2007</date><detail type="volume"><caption>vol.</caption><number>71</number></detail><detail type="supplement"><caption>Suppl. no.</caption><number>sa</number></detail><extent unit="pages"><start>1</start><end>17</end><total>17</total></extent></part></relatedItem><identifier type="istex">310F12BAA233D4D1793BE6A632BA5BB16C28D865</identifier><identifier type="DOI">10.1111/j.1095-8649.2007.01450.x</identifier><identifier type="ArticleID">JFB1450</identifier><accessCondition type="use and reproduction" contentType="copyright">2007 The Fisheries Society of the British Isles</accessCondition><recordInfo><recordContentSource>WILEY</recordContentSource><recordOrigin>Blackwell Publishing Ltd</recordOrigin></recordInfo></mods></metadata><serie></serie></istex></record>Pour manipuler ce document sous Unix (Dilib)
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