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<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">Genetic consequences of sequential founder events by an island-colonizing bird</title><author><name sortKey="Clegg, Sonya M" sort="Clegg, Sonya M" uniqKey="Clegg S" first="Sonya M." last="Clegg">Sonya M. Clegg</name><affiliation><nlm:aff id="N0x9a4ae90.0x9d52c80">Department of Biological Sciences and Natural Environment Research Council Centre for Population Biology, Imperial College at Silwood Park, Ascot, Berkshire SL5 7PY, United Kingdom;</nlm:aff></affiliation><affiliation><nlm:aff id="N0x9a4ae90.0x9d52c80">Department of Zoology and Entomology, University of Queensland, St Lucia, Brisbane, Queensland 4072, Australia;</nlm:aff></affiliation></author><author><name sortKey="Degnan, Sandie M" sort="Degnan, Sandie M" uniqKey="Degnan S" first="Sandie M." last="Degnan">Sandie M. Degnan</name><affiliation><nlm:aff id="N0x9a4ae90.0x9d52c80">Department of Zoology and Entomology, University of Queensland, St Lucia, Brisbane, Queensland 4072, Australia;</nlm:aff></affiliation></author><author><name sortKey="Kikkawa, Jiro" sort="Kikkawa, Jiro" uniqKey="Kikkawa J" first="Jiro" last="Kikkawa">Jiro Kikkawa</name><affiliation><nlm:aff id="N0x9a4ae90.0x9d52c80">Department of Zoology and Entomology, University of Queensland, St Lucia, Brisbane, Queensland 4072, Australia;</nlm:aff></affiliation></author><author><name sortKey="Moritz, Craig" sort="Moritz, Craig" uniqKey="Moritz C" first="Craig" last="Moritz">Craig Moritz</name><affiliation><nlm:aff wicri:cut="; and" id="N0x9a4ae90.0x9d52c80">Museum of Vertebrate Zoology, University of California, Berkeley, CA 94720-3110</nlm:aff></affiliation></author><author><name sortKey="Estoup, Arnaud" sort="Estoup, Arnaud" uniqKey="Estoup A" first="Arnaud" last="Estoup">Arnaud Estoup</name><affiliation><nlm:aff id="N0x9a4ae90.0x9d52c80">Centre de Biologie et de Gestion des Populations, Campus International de Baillarguet CS 30 016 34988, Montferrier/Lez cedex, France</nlm:aff></affiliation></author><author><name sortKey="Owens, Ian P F" sort="Owens, Ian P F" uniqKey="Owens I" first="Ian P. F." last="Owens">Ian P. F. Owens</name><affiliation><nlm:aff id="N0x9a4ae90.0x9d52c80">Department of Biological Sciences and Natural Environment Research Council Centre for Population Biology, Imperial College at Silwood Park, Ascot, Berkshire SL5 7PY, United Kingdom;</nlm:aff></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">PMC</idno><idno type="pmid">12034870</idno><idno type="pmc">123032</idno><idno type="url">http://www.ncbi.nlm.nih.gov/pmc/articles/PMC123032</idno><idno type="RBID">PMC:123032</idno><idno type="doi">10.1073/pnas.102583399</idno><date when="2002">2002</date><idno type="wicri:Area/Pmc/Corpus">000A27</idno><idno type="wicri:explorRef" wicri:stream="Pmc" wicri:step="Corpus" wicri:corpus="PMC">000A27</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en" level="a" type="main">Genetic consequences of sequential founder events by an island-colonizing bird</title><author><name sortKey="Clegg, Sonya M" sort="Clegg, Sonya M" uniqKey="Clegg S" first="Sonya M." last="Clegg">Sonya M. Clegg</name><affiliation><nlm:aff id="N0x9a4ae90.0x9d52c80">Department of Biological Sciences and Natural Environment Research Council Centre for Population Biology, Imperial College at Silwood Park, Ascot, Berkshire SL5 7PY, United Kingdom;</nlm:aff></affiliation><affiliation><nlm:aff id="N0x9a4ae90.0x9d52c80">Department of Zoology and Entomology, University of Queensland, St Lucia, Brisbane, Queensland 4072, Australia;</nlm:aff></affiliation></author><author><name sortKey="Degnan, Sandie M" sort="Degnan, Sandie M" uniqKey="Degnan S" first="Sandie M." last="Degnan">Sandie M. Degnan</name><affiliation><nlm:aff id="N0x9a4ae90.0x9d52c80">Department of Zoology and Entomology, University of Queensland, St Lucia, Brisbane, Queensland 4072, Australia;</nlm:aff></affiliation></author><author><name sortKey="Kikkawa, Jiro" sort="Kikkawa, Jiro" uniqKey="Kikkawa J" first="Jiro" last="Kikkawa">Jiro Kikkawa</name><affiliation><nlm:aff id="N0x9a4ae90.0x9d52c80">Department of Zoology and Entomology, University of Queensland, St Lucia, Brisbane, Queensland 4072, Australia;</nlm:aff></affiliation></author><author><name sortKey="Moritz, Craig" sort="Moritz, Craig" uniqKey="Moritz C" first="Craig" last="Moritz">Craig Moritz</name><affiliation><nlm:aff wicri:cut="; and" id="N0x9a4ae90.0x9d52c80">Museum of Vertebrate Zoology, University of California, Berkeley, CA 94720-3110</nlm:aff></affiliation></author><author><name sortKey="Estoup, Arnaud" sort="Estoup, Arnaud" uniqKey="Estoup A" first="Arnaud" last="Estoup">Arnaud Estoup</name><affiliation><nlm:aff id="N0x9a4ae90.0x9d52c80">Centre de Biologie et de Gestion des Populations, Campus International de Baillarguet CS 30 016 34988, Montferrier/Lez cedex, France</nlm:aff></affiliation></author><author><name sortKey="Owens, Ian P F" sort="Owens, Ian P F" uniqKey="Owens I" first="Ian P. F." last="Owens">Ian P. F. Owens</name><affiliation><nlm:aff id="N0x9a4ae90.0x9d52c80">Department of Biological Sciences and Natural Environment Research Council Centre for Population Biology, Imperial College at Silwood Park, Ascot, Berkshire SL5 7PY, United Kingdom;</nlm:aff></affiliation></author></analytic><series><title level="j">Proceedings of the National Academy of Sciences of the United States of America</title><idno type="ISSN">0027-8424</idno><idno type="eISSN">1091-6490</idno><imprint><date when="2002">2002</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en"><p>The importance of founder events in promoting evolutionary changes on islands has been a subject of long-running controversy. Resolution of this debate has been hindered by a lack of empirical evidence from naturally founded island populations. Here we undertake a genetic analysis of a series of historically documented, natural colonization events by the silvereye species-complex (<italic>Zosterops lateralis</italic>), a group used to illustrate the process of island colonization in the original founder effect model. Our results indicate that single founder events do not affect levels of heterozygosity or allelic diversity, nor do they result in immediate genetic differentiation between populations. Instead, four to five successive founder events are required before indices of diversity and divergence approach that seen in evolutionarily old forms. A Bayesian analysis based on computer simulation allows inferences to be made on the number of effective founders and indicates that founder effects are weak because island populations are established from relatively large flocks. Indeed, statistical support for a founder event model was not significantly higher than for a gradual-drift model for all recently colonized islands. Taken together, these results suggest that single colonization events in this species complex are rarely accompanied by severe founder effects, and multiple founder events and/or long-term genetic drift have been of greater consequence for neutral genetic diversity.</p></div></front></TEI><pmc article-type="research-article"><pmc-comment>The publisher of this article does not allow downloading of the full text in XML form.</pmc-comment>
<front><journal-meta><journal-id journal-id-type="nlm-ta">Proc Natl Acad Sci U S A</journal-id><journal-id journal-id-type="publisher-id">PNAS</journal-id><journal-title>Proceedings of the National Academy of Sciences of the United States of America</journal-title><issn pub-type="ppub">0027-8424</issn><issn pub-type="epub">1091-6490</issn><publisher><publisher-name>The National Academy of Sciences</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="pmid">12034870</article-id><article-id pub-id-type="pmc">123032</article-id><article-id pub-id-type="publisher-id">102583399</article-id><article-id pub-id-type="publisher-id">5833</article-id><article-id pub-id-type="doi">10.1073/pnas.102583399</article-id><article-categories><subj-group subj-group-type="heading"><subject>Biological Sciences</subject><subj-group><subject>Evolution</subject></subj-group></subj-group><series-title>From the Cover</series-title></article-categories><title-group><article-title>Genetic consequences of sequential founder events by an island-colonizing bird</article-title></title-group><contrib-group><contrib contrib-type="author"><name><surname>Clegg</surname><given-names>Sonya M.</given-names></name><xref ref-type="aff" rid="N0x9a4ae90.0x9d52c80">*</xref><xref ref-type="aff" rid="N0x9a4ae90.0x9d52c80">†</xref><xref ref-type="author-notes" rid="FN152">‡</xref></contrib><contrib contrib-type="author"><name><surname>Degnan</surname><given-names>Sandie M.</given-names></name><xref ref-type="aff" rid="N0x9a4ae90.0x9d52c80">†</xref></contrib><contrib contrib-type="author"><name><surname>Kikkawa</surname><given-names>Jiro</given-names></name><xref ref-type="aff" rid="N0x9a4ae90.0x9d52c80">†</xref></contrib><contrib contrib-type="author"><name><surname>Moritz</surname><given-names>Craig</given-names></name><xref ref-type="aff" rid="N0x9a4ae90.0x9d52c80">§</xref></contrib><contrib contrib-type="author"><name><surname>Estoup</surname><given-names>Arnaud</given-names></name><xref ref-type="aff" rid="N0x9a4ae90.0x9d52c80">¶</xref></contrib><contrib contrib-type="author"><name><surname>Owens</surname><given-names>Ian P. F.</given-names></name><xref ref-type="aff" rid="N0x9a4ae90.0x9d52c80">*</xref></contrib></contrib-group><aff id="N0x9a4ae90.0x9d52c80"><label>*</label>Department of Biological Sciences and Natural Environment Research Council Centre for Population Biology, Imperial College at Silwood Park, Ascot, Berkshire SL5 7PY, United Kingdom;<label>†</label>Department of Zoology and Entomology, University of Queensland, St Lucia, Brisbane, Queensland 4072, Australia;<label>§</label>Museum of Vertebrate Zoology, University of California, Berkeley, CA 94720-3110; and<label>¶</label>Centre de Biologie et de Gestion des Populations, Campus International de Baillarguet CS 30 016 34988, Montferrier/Lez cedex, France</aff><author-notes><fn id="FN152"><label>‡</label><p>To whom reprint requests should be addressed. E-mail: <email>sonya.clegg@ic.ac.uk</email>.</p></fn><fn><p>Edited by Wyatt W. Anderson, University of Georgia, Athens, GA, and approved April 1, 2002</p></fn></author-notes><pub-date pub-type="ppub"><day>11</day><month>6</month><year>2002</year></pub-date><pub-date pub-type="epub"><day>28</day><month>5</month><year>2002</year></pub-date><volume>99</volume><issue>12</issue><fpage>8127</fpage><lpage>8132</lpage><history><date date-type="received"><day>31</day><month>10</month><year>2001</year></date></history><copyright-statement>Copyright © 2002, The National Academy of Sciences</copyright-statement><copyright-year>2002</copyright-year><abstract><p>The importance of founder events in promoting evolutionary changes on islands has been a subject of long-running controversy. Resolution of this debate has been hindered by a lack of empirical evidence from naturally founded island populations. Here we undertake a genetic analysis of a series of historically documented, natural colonization events by the silvereye species-complex (<italic>Zosterops lateralis</italic>), a group used to illustrate the process of island colonization in the original founder effect model. Our results indicate that single founder events do not affect levels of heterozygosity or allelic diversity, nor do they result in immediate genetic differentiation between populations. Instead, four to five successive founder events are required before indices of diversity and divergence approach that seen in evolutionarily old forms. A Bayesian analysis based on computer simulation allows inferences to be made on the number of effective founders and indicates that founder effects are weak because island populations are established from relatively large flocks. Indeed, statistical support for a founder event model was not significantly higher than for a gradual-drift model for all recently colonized islands. Taken together, these results suggest that single colonization events in this species complex are rarely accompanied by severe founder effects, and multiple founder events and/or long-term genetic drift have been of greater consequence for neutral genetic diversity.</p></abstract><kwd-group><kwd>islands‖silvereyes‖colonization‖microsatellites</kwd></kwd-group></article-meta></front></pmc></record>Pour manipuler ce document sous Unix (Dilib)
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