Habitat distribution influences dispersal and fine‐scale genetic population structure of eastern foxsnakes (Mintonius gloydi) across a fragmented landscape
Identifieur interne : 000E22 ( Istex/Corpus ); précédent : 000E21; suivant : 000E23Habitat distribution influences dispersal and fine‐scale genetic population structure of eastern foxsnakes (Mintonius gloydi) across a fragmented landscape
Auteurs : Jeffrey R. Row ; Gabriel Blouin-Demers ; Stephen C. LougheedSource :
- Molecular Ecology [ 0962-1083 ] ; 2010-12.
English descriptors
Abstract
Dispersal is a fundamental attribute of species in nature and shapes population dynamics, evolutionary trajectories and genetic variation across spatial and temporal scales. It is increasingly clear that landscape features have large impacts on dispersal patterns. Thus, understanding how individuals and species move through landscapes is essential for predicting impacts of landscape alterations. Information on dispersal patterns, however, is lacking for many taxa, particularly reptiles. Eastern foxsnakes (Mintoinus gloydi) are marsh and prairie specialists that avoid agricultural fields, but they have persisted across a fragmented region in southwestern Ontario and northern Ohio. Here, we combined habitat suitability modelling with population genetic analyses to infer how foxsnakes disperse through a habitat mosaic of natural and altered landscape features. Boundary regions between the eight genetic clusters, identified through assignment tests, were comprised of low suitability habitat (e.g. agricultural fields). Island populations were grouped into a single genetic cluster, and comparatively low FST values between island and mainland populations suggest open water presents less of a barrier than nonsuitable terrestrial habitat. Isolation by resistance and least‐cost path analysis produced similar results with matrices of pairwise individual genetic distance significantly more correlated to matrices of resistance values derived from habitat suitability than models with an undifferentiated landscape. Spatial autocorrelation results matched better with assignment results when incorporating resistance values rather than straight‐line distances. All analyses used in our study produced similar results suggesting that habitat degradation limits dispersal for foxsnakes, which has had a strong effect on the genetic population structure across this region.
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DOI: 10.1111/j.1365-294X.2010.04872.x
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Island populations were grouped into a single genetic cluster, and comparatively low FST values between island and mainland populations suggest open water presents less of a barrier than nonsuitable terrestrial habitat. Isolation by resistance and least‐cost path analysis produced similar results with matrices of pairwise individual genetic distance significantly more correlated to matrices of resistance values derived from habitat suitability than models with an undifferentiated landscape. Spatial autocorrelation results matched better with assignment results when incorporating resistance values rather than straight‐line distances. All analyses used in our study produced similar results suggesting that habitat degradation limits dispersal for foxsnakes, which has had a strong effect on the genetic population structure across this region.</div></front></TEI><istex><corpusName>wiley</corpusName><author><json:item><name>JEFFREY R. 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Island populations were grouped into a single genetic cluster, and comparatively low FST values between island and mainland populations suggest open water presents less of a barrier than nonsuitable terrestrial habitat. Isolation by resistance and least‐cost path analysis produced similar results with matrices of pairwise individual genetic distance significantly more correlated to matrices of resistance values derived from habitat suitability than models with an undifferentiated landscape. Spatial autocorrelation results matched better with assignment results when incorporating resistance values rather than straight‐line distances. 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Island populations were grouped into a single genetic cluster, and comparatively low FST values between island and mainland populations suggest open water presents less of a barrier than nonsuitable terrestrial habitat. Isolation by resistance and least‐cost path analysis produced similar results with matrices of pairwise individual genetic distance significantly more correlated to matrices of resistance values derived from habitat suitability than models with an undifferentiated landscape. Spatial autocorrelation results matched better with assignment results when incorporating resistance values rather than straight‐line distances. 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Lougheed, Fax: 1 613 533 6617; E‐mail:<email>lough@queensu.ca</email></correspondenceTo><linkGroup><link type="toTypesetVersion" href="file:MEC.MEC4872.pdf"></link></linkGroup></publicationMeta><contentMeta><unparsedEditorialHistory>Received 5 June 2010; revision received 23 August 2010; accepted 12 September 2010</unparsedEditorialHistory><countGroup><count type="figureTotal" number="5"></count><count type="tableTotal" number="4"></count></countGroup><titleGroup><title type="main">Habitat distribution influences dispersal and fine‐scale genetic population structure of eastern foxsnakes (<i>Mintonius gloydi</i>) across a fragmented landscape</title><title type="shortAuthors">J. R. ROW, G. BLOUIN‐DEMERS and S. C. LOUGHEED</title><title type="short">HABITAT INFLUENCES DISPERSAL OF FOXSNAKES</title></titleGroup><creators><creator creatorRole="author" xml:id="cr1" affiliationRef="#a1"><personName><givenNames>JEFFREY R.</givenNames><familyName>ROW</familyName></personName></creator><creator creatorRole="author" xml:id="cr2" affiliationRef="#a2"><personName><givenNames>GABRIEL</givenNames><familyName>BLOUIN‐DEMERS</familyName></personName></creator><creator creatorRole="author" xml:id="cr3" affiliationRef="#a1"><personName><givenNames>STEPHEN C.</givenNames><familyName>LOUGHEED</familyName></personName></creator></creators><affiliationGroup><affiliation xml:id="a1" countryCode="CA"><unparsedAffiliation>Department of Biology, Queen’s University, 116 Barrie Street, Kingston, ON K7L 3N6, Canada</unparsedAffiliation></affiliation><affiliation xml:id="a2" countryCode="CA"><unparsedAffiliation>Department of Biology, University of Ottawa, 30 Marie‐Curie, Ottawa, ON K1N 6N5, Canada</unparsedAffiliation></affiliation></affiliationGroup><keywordGroup xml:lang="en"><keyword xml:id="k1">conservation genetics</keyword><keyword xml:id="k2">habitat degradation</keyword><keyword xml:id="k3">population genetics</keyword><keyword xml:id="k4">reptiles</keyword></keywordGroup><supportingInformation><p><b>Appendix S1</b> Ecological Niche Factor Analysis methods and results for eastern foxsnakes across southwestern Ontario.</p><p><b>Appendix S2</b> Nonspatial assignment test results for eastern foxsnakes across southwestern Ontario and northwestern Ohio.</p><supportingInfoItem><mediaResource alt="supporting info item" href="urn-x:wiley:09621083:media:mec4872:MEC_4872_sm_apps1-2"></mediaResource><caption>Supporting info item</caption></supportingInfoItem></supportingInformation><abstractGroup><abstract type="main" xml:lang="en"><title type="main">Abstract</title><p>Dispersal is a fundamental attribute of species in nature and shapes population dynamics, evolutionary trajectories and genetic variation across spatial and temporal scales. It is increasingly clear that landscape features have large impacts on dispersal patterns. Thus, understanding how individuals and species move through landscapes is essential for predicting impacts of landscape alterations. Information on dispersal patterns, however, is lacking for many taxa, particularly reptiles. Eastern foxsnakes (<i>Mintoinus gloydi</i>) are marsh and prairie specialists that avoid agricultural fields, but they have persisted across a fragmented region in southwestern Ontario and northern Ohio. Here, we combined habitat suitability modelling with population genetic analyses to infer how foxsnakes disperse through a habitat mosaic of natural and altered landscape features. Boundary regions between the eight genetic clusters, identified through assignment tests, were comprised of low suitability habitat (e.g. agricultural fields). Island populations were grouped into a single genetic cluster, and comparatively low <i>F</i><sub>ST</sub> values between island and mainland populations suggest open water presents less of a barrier than nonsuitable terrestrial habitat. Isolation by resistance and least‐cost path analysis produced similar results with matrices of pairwise individual genetic distance significantly more correlated to matrices of resistance values derived from habitat suitability than models with an undifferentiated landscape. Spatial autocorrelation results matched better with assignment results when incorporating resistance values rather than straight‐line distances. All analyses used in our study produced similar results suggesting that habitat degradation limits dispersal for foxsnakes, which has had a strong effect on the genetic population structure across this region.</p></abstract></abstractGroup></contentMeta></header></component></istex:document></istex:metadataXml><mods version="3.6"><titleInfo lang="en"><title>Habitat distribution influences dispersal and fine‐scale genetic population structure of eastern foxsnakes (Mintonius gloydi) across a fragmented landscape</title></titleInfo><titleInfo type="abbreviated" lang="en"><title>HABITAT INFLUENCES DISPERSAL OF FOXSNAKES</title></titleInfo><titleInfo type="alternative" contentType="CDATA" lang="en"><title>Habitat distribution influences dispersal and fine‐scale genetic population structure of eastern foxsnakes (Mintonius gloydi) across a fragmented landscape</title></titleInfo><name type="personal"><namePart type="given">JEFFREY R.</namePart><namePart type="family">ROW</namePart><affiliation>Department of Biology, Queen’s University, 116 Barrie Street, Kingston, ON K7L 3N6, Canada</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">GABRIEL</namePart><namePart type="family">BLOUIN‐DEMERS</namePart><affiliation>Department of Biology, University of Ottawa, 30 Marie‐Curie, Ottawa, ON K1N 6N5, Canada</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">STEPHEN C.</namePart><namePart type="family">LOUGHEED</namePart><affiliation>Department of Biology, Queen’s University, 116 Barrie Street, Kingston, ON K7L 3N6, Canada</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">2010-12</dateIssued><edition>Received 5 June 2010; revision received 23 August 2010; accepted 12 September 2010</edition><copyrightDate encoding="w3cdtf">2010</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">4</extent></physicalDescription><abstract lang="en">Dispersal is a fundamental attribute of species in nature and shapes population dynamics, evolutionary trajectories and genetic variation across spatial and temporal scales. It is increasingly clear that landscape features have large impacts on dispersal patterns. Thus, understanding how individuals and species move through landscapes is essential for predicting impacts of landscape alterations. Information on dispersal patterns, however, is lacking for many taxa, particularly reptiles. Eastern foxsnakes (Mintoinus gloydi) are marsh and prairie specialists that avoid agricultural fields, but they have persisted across a fragmented region in southwestern Ontario and northern Ohio. Here, we combined habitat suitability modelling with population genetic analyses to infer how foxsnakes disperse through a habitat mosaic of natural and altered landscape features. Boundary regions between the eight genetic clusters, identified through assignment tests, were comprised of low suitability habitat (e.g. agricultural fields). Island populations were grouped into a single genetic cluster, and comparatively low FST values between island and mainland populations suggest open water presents less of a barrier than nonsuitable terrestrial habitat. Isolation by resistance and least‐cost path analysis produced similar results with matrices of pairwise individual genetic distance significantly more correlated to matrices of resistance values derived from habitat suitability than models with an undifferentiated landscape. Spatial autocorrelation results matched better with assignment results when incorporating resistance values rather than straight‐line distances. All analyses used in our study produced similar results suggesting that habitat degradation limits dispersal for foxsnakes, which has had a strong effect on the genetic population structure across this region.</abstract><subject lang="en"><genre>keywords</genre><topic>conservation genetics</topic><topic>habitat degradation</topic><topic>population genetics</topic><topic>reptiles</topic></subject><relatedItem type="host"><titleInfo><title>Molecular Ecology</title></titleInfo><genre type="journal">journal</genre><note type="content"> Appendix S1 Ecological Niche Factor Analysis methods and results for eastern foxsnakes across southwestern Ontario. Appendix S2 Nonspatial assignment test results for eastern foxsnakes across southwestern Ontario and northwestern Ohio. Appendix S1 Ecological Niche Factor Analysis methods and results for eastern foxsnakes across southwestern Ontario. Appendix S2 Nonspatial assignment test results for eastern foxsnakes across southwestern Ontario and northwestern Ohio.Supporting Info Item: Supporting info item - </note><identifier type="ISSN">0962-1083</identifier><identifier type="eISSN">1365-294X</identifier><identifier type="DOI">10.1111/(ISSN)1365-294X</identifier><identifier type="PublisherID">MEC</identifier><part><date>2010</date><detail type="volume"><caption>vol.</caption><number>19</number></detail><detail type="issue"><caption>no.</caption><number>23</number></detail><extent unit="pages"><start>5157</start><end>5171</end><total>15</total></extent></part></relatedItem><identifier type="istex">134EBDB690DB8CD36555B533EE4C7C2216482DDF</identifier><identifier type="DOI">10.1111/j.1365-294X.2010.04872.x</identifier><identifier type="ArticleID">MEC4872</identifier><accessCondition type="use and reproduction" contentType="copyright">© 2010 Blackwell Publishing Ltd</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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|type= RBID
|clé= ISTEX:134EBDB690DB8CD36555B533EE4C7C2216482DDF
|texte= Habitat distribution influences dispersal and fine‐scale genetic population structure of eastern foxsnakes (Mintonius gloydi) across a fragmented landscape
}}
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